fs/f2fs/file.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * fs/f2fs/file.c
   4  *
   5  * Copyright (c) 2012 Samsung Electronics Co., Ltd.
   6  *             http://www.samsung.com/
   7  */
   8 #include <linux/fs.h>
   9 #include <linux/f2fs_fs.h>
  10 #include <linux/stat.h>
  11 #include <linux/buffer_head.h>
  12 #include <linux/writeback.h>
  13 #include <linux/blkdev.h>
  14 #include <linux/falloc.h>
  15 #include <linux/types.h>
  16 #include <linux/compat.h>
  17 #include <linux/uaccess.h>
  18 #include <linux/mount.h>
  19 #include <linux/pagevec.h>
  20 #include <linux/uio.h>
  21 #include <linux/uuid.h>
  22 #include <linux/file.h>
  23 #include <linux/nls.h>
  24 #include <linux/sched/signal.h>
  25 #include <linux/fileattr.h>
  26
  27 #include "f2fs.h"
  28 #include "node.h"
  29 #include "segment.h"
  30 #include "xattr.h"
  31 #include "acl.h"
  32 #include "gc.h"
  33 #include <trace/events/f2fs.h>
  34 #include <uapi/linux/f2fs.h>
  35
  36 static vm_fault_t f2fs_filemap_fault(struct vm_fault *vmf)
  37 {
  38         struct inode *inode = file_inode(vmf->vma->vm_file);
  39         vm_fault_t ret;
  40
  41         down_read(&F2FS_I(inode)->i_mmap_sem);
  42         ret = filemap_fault(vmf);
  43         up_read(&F2FS_I(inode)->i_mmap_sem);
  44
  45         if (!ret)
  46                 f2fs_update_iostat(F2FS_I_SB(inode), APP_MAPPED_READ_IO,
  47                                                         F2FS_BLKSIZE);
  48
  49         trace_f2fs_filemap_fault(inode, vmf->pgoff, (unsigned long)ret);
  50
  51         return ret;
  52 }
  53
  54 static vm_fault_t f2fs_vm_page_mkwrite(struct vm_fault *vmf)
  55 {
  56         struct page *page = vmf->page;
  57         struct inode *inode = file_inode(vmf->vma->vm_file);
  58         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
  59         struct dnode_of_data dn;
  60         bool need_alloc = true;
  61         int err = 0;
  62
  63         if (unlikely(IS_IMMUTABLE(inode)))
  64                 return VM_FAULT_SIGBUS;
  65
  66         if (is_inode_flag_set(inode, FI_COMPRESS_RELEASED))
  67                 return VM_FAULT_SIGBUS;
  68
  69         if (unlikely(f2fs_cp_error(sbi))) {
  70                 err = -EIO;
  71                 goto err;
  72         }
  73
  74         if (!f2fs_is_checkpoint_ready(sbi)) {
  75                 err = -ENOSPC;
  76                 goto err;
  77         }
  78
  79         err = f2fs_convert_inline_inode(inode);
  80         if (err)
  81                 goto err;
  82
  83 #ifdef CONFIG_F2FS_FS_COMPRESSION
  84         if (f2fs_compressed_file(inode)) {
  85                 int ret = f2fs_is_compressed_cluster(inode, page->index);
  86
  87                 if (ret < 0) {
  88                         err = ret;
  89                         goto err;
  90                 } else if (ret) {
  91                         need_alloc = false;
  92                 }
  93         }
  94 #endif
  95         /* should do out of any locked page */
  96         if (need_alloc)
  97                 f2fs_balance_fs(sbi, true);
  98
  99         sb_start_pagefault(inode->i_sb);
 100
 101         f2fs_bug_on(sbi, f2fs_has_inline_data(inode));
 102
 103         file_update_time(vmf->vma->vm_file);
 104         down_read(&F2FS_I(inode)->i_mmap_sem);
 105         lock_page(page);
 106         if (unlikely(page->mapping != inode->i_mapping ||
 107                         page_offset(page) > i_size_read(inode) ||
 108                         !PageUptodate(page))) {
 109                 unlock_page(page);
 110                 err = -EFAULT;
 111                 goto out_sem;
 112         }
 113
 114         if (need_alloc) {
 115                 /* block allocation */
 116                 f2fs_do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, true);
 117                 set_new_dnode(&dn, inode, NULL, NULL, 0);
 118                 err = f2fs_get_block(&dn, page->index);
 119                 f2fs_do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, false);
 120         }
 121
 122 #ifdef CONFIG_F2FS_FS_COMPRESSION
 123         if (!need_alloc) {
 124                 set_new_dnode(&dn, inode, NULL, NULL, 0);
 125                 err = f2fs_get_dnode_of_data(&dn, page->index, LOOKUP_NODE);
 126                 f2fs_put_dnode(&dn);
 127         }
 128 #endif
 129         if (err) {
 130                 unlock_page(page);
 131                 goto out_sem;
 132         }
 133
 134         f2fs_wait_on_page_writeback(page, DATA, false, true);
 135
 136         /* wait for GCed page writeback via META_MAPPING */
 137         f2fs_wait_on_block_writeback(inode, dn.data_blkaddr);
 138
 139         /*
 140          * check to see if the page is mapped already (no holes)
 141          */
 142         if (PageMappedToDisk(page))
 143                 goto out_sem;
 144
 145         /* page is wholly or partially inside EOF */
 146         if (((loff_t)(page->index + 1) << PAGE_SHIFT) >
 147                                                 i_size_read(inode)) {
 148                 loff_t offset;
 149
 150                 offset = i_size_read(inode) & ~PAGE_MASK;
 151                 zero_user_segment(page, offset, PAGE_SIZE);
 152         }
 153         set_page_dirty(page);
 154         if (!PageUptodate(page))
 155                 SetPageUptodate(page);
 156
 157         f2fs_update_iostat(sbi, APP_MAPPED_IO, F2FS_BLKSIZE);
 158         f2fs_update_time(sbi, REQ_TIME);
 159
 160         trace_f2fs_vm_page_mkwrite(page, DATA);
 161 out_sem:
 162         up_read(&F2FS_I(inode)->i_mmap_sem);
 163
 164         sb_end_pagefault(inode->i_sb);
 165 err:
 166         return block_page_mkwrite_return(err);
 167 }
 168
 169 static const struct vm_operations_struct f2fs_file_vm_ops = {
 170         .fault          = f2fs_filemap_fault,
 171         .map_pages      = filemap_map_pages,
 172         .page_mkwrite   = f2fs_vm_page_mkwrite,
 173 };
 174
 175 static int get_parent_ino(struct inode *inode, nid_t *pino)
 176 {
 177         struct dentry *dentry;
 178
 179         /*
 180          * Make sure to get the non-deleted alias.  The alias associated with
 181          * the open file descriptor being fsync()'ed may be deleted already.
 182          */
 183         dentry = d_find_alias(inode);
 184         if (!dentry)
 185                 return 0;
 186
 187         *pino = parent_ino(dentry);
 188         dput(dentry);
 189         return 1;
 190 }
 191
 192 static inline enum cp_reason_type need_do_checkpoint(struct inode *inode)
 193 {
 194         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 195         enum cp_reason_type cp_reason = CP_NO_NEEDED;
 196
 197         if (!S_ISREG(inode->i_mode))
 198                 cp_reason = CP_NON_REGULAR;
 199         else if (f2fs_compressed_file(inode))
 200                 cp_reason = CP_COMPRESSED;
 201         else if (inode->i_nlink != 1)
 202                 cp_reason = CP_HARDLINK;
 203         else if (is_sbi_flag_set(sbi, SBI_NEED_CP))
 204                 cp_reason = CP_SB_NEED_CP;
 205         else if (file_wrong_pino(inode))
 206                 cp_reason = CP_WRONG_PINO;
 207         else if (!f2fs_space_for_roll_forward(sbi))
 208                 cp_reason = CP_NO_SPC_ROLL;
 209         else if (!f2fs_is_checkpointed_node(sbi, F2FS_I(inode)->i_pino))
 210                 cp_reason = CP_NODE_NEED_CP;
 211         else if (test_opt(sbi, FASTBOOT))
 212                 cp_reason = CP_FASTBOOT_MODE;
 213         else if (F2FS_OPTION(sbi).active_logs == 2)
 214                 cp_reason = CP_SPEC_LOG_NUM;
 215         else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT &&
 216                 f2fs_need_dentry_mark(sbi, inode->i_ino) &&
 217                 f2fs_exist_written_data(sbi, F2FS_I(inode)->i_pino,
 218                                                         TRANS_DIR_INO))
 219                 cp_reason = CP_RECOVER_DIR;
 220
 221         return cp_reason;
 222 }
 223
 224 static bool need_inode_page_update(struct f2fs_sb_info *sbi, nid_t ino)
 225 {
 226         struct page *i = find_get_page(NODE_MAPPING(sbi), ino);
 227         bool ret = false;
 228         /* But we need to avoid that there are some inode updates */
 229         if ((i && PageDirty(i)) || f2fs_need_inode_block_update(sbi, ino))
 230                 ret = true;
 231         f2fs_put_page(i, 0);
 232         return ret;
 233 }
 234
 235 static void try_to_fix_pino(struct inode *inode)
 236 {
 237         struct f2fs_inode_info *fi = F2FS_I(inode);
 238         nid_t pino;
 239
 240         down_write(&fi->i_sem);
 241         if (file_wrong_pino(inode) && inode->i_nlink == 1 &&
 242                         get_parent_ino(inode, &pino)) {
 243                 f2fs_i_pino_write(inode, pino);
 244                 file_got_pino(inode);
 245         }
 246         up_write(&fi->i_sem);
 247 }
 248
 249 static int f2fs_do_sync_file(struct file *file, loff_t start, loff_t end,
 250                                                 int datasync, bool atomic)
 251 {
 252         struct inode *inode = file->f_mapping->host;
 253         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 254         nid_t ino = inode->i_ino;
 255         int ret = 0;
 256         enum cp_reason_type cp_reason = 0;
 257         struct writeback_control wbc = {
 258                 .sync_mode = WB_SYNC_ALL,
 259                 .nr_to_write = LONG_MAX,
 260                 .for_reclaim = 0,
 261         };
 262         unsigned int seq_id = 0;
 263
 264         if (unlikely(f2fs_readonly(inode->i_sb) ||
 265                                 is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
 266                 return 0;
 267
 268         trace_f2fs_sync_file_enter(inode);
 269
 270         if (S_ISDIR(inode->i_mode))
 271                 goto go_write;
 272
 273         /* if fdatasync is triggered, let's do in-place-update */
 274         if (datasync || get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks)
 275                 set_inode_flag(inode, FI_NEED_IPU);
 276         ret = file_write_and_wait_range(file, start, end);
 277         clear_inode_flag(inode, FI_NEED_IPU);
 278
 279         if (ret) {
 280                 trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret);
 281                 return ret;
 282         }
 283
 284         /* if the inode is dirty, let's recover all the time */
 285         if (!f2fs_skip_inode_update(inode, datasync)) {
 286                 f2fs_write_inode(inode, NULL);
 287                 goto go_write;
 288         }
 289
 290         /*
 291          * if there is no written data, don't waste time to write recovery info.
 292          */
 293         if (!is_inode_flag_set(inode, FI_APPEND_WRITE) &&
 294                         !f2fs_exist_written_data(sbi, ino, APPEND_INO)) {
 295
 296                 /* it may call write_inode just prior to fsync */
 297                 if (need_inode_page_update(sbi, ino))
 298                         goto go_write;
 299
 300                 if (is_inode_flag_set(inode, FI_UPDATE_WRITE) ||
 301                                 f2fs_exist_written_data(sbi, ino, UPDATE_INO))
 302                         goto flush_out;
 303                 goto out;
 304         }
 305 go_write:
 306         /*
 307          * Both of fdatasync() and fsync() are able to be recovered from
 308          * sudden-power-off.
 309          */
 310         down_read(&F2FS_I(inode)->i_sem);
 311         cp_reason = need_do_checkpoint(inode);
 312         up_read(&F2FS_I(inode)->i_sem);
 313
 314         if (cp_reason) {
 315                 /* all the dirty node pages should be flushed for POR */
 316                 ret = f2fs_sync_fs(inode->i_sb, 1);
 317
 318                 /*
 319                  * We've secured consistency through sync_fs. Following pino
 320                  * will be used only for fsynced inodes after checkpoint.
 321                  */
 322                 try_to_fix_pino(inode);
 323                 clear_inode_flag(inode, FI_APPEND_WRITE);
 324                 clear_inode_flag(inode, FI_UPDATE_WRITE);
 325                 goto out;
 326         }
 327 sync_nodes:
 328         atomic_inc(&sbi->wb_sync_req[NODE]);
 329         ret = f2fs_fsync_node_pages(sbi, inode, &wbc, atomic, &seq_id);
 330         atomic_dec(&sbi->wb_sync_req[NODE]);
 331         if (ret)
 332                 goto out;
 333
 334         /* if cp_error was enabled, we should avoid infinite loop */
 335         if (unlikely(f2fs_cp_error(sbi))) {
 336                 ret = -EIO;
 337                 goto out;
 338         }
 339
 340         if (f2fs_need_inode_block_update(sbi, ino)) {
 341                 f2fs_mark_inode_dirty_sync(inode, true);
 342                 f2fs_write_inode(inode, NULL);
 343                 goto sync_nodes;
 344         }
 345
 346         /*
 347          * If it's atomic_write, it's just fine to keep write ordering. So
 348          * here we don't need to wait for node write completion, since we use
 349          * node chain which serializes node blocks. If one of node writes are
 350          * reordered, we can see simply broken chain, resulting in stopping
 351          * roll-forward recovery. It means we'll recover all or none node blocks
 352          * given fsync mark.
 353          */
 354         if (!atomic) {
 355                 ret = f2fs_wait_on_node_pages_writeback(sbi, seq_id);
 356                 if (ret)
 357                         goto out;
 358         }
 359
 360         /* once recovery info is written, don't need to tack this */
 361         f2fs_remove_ino_entry(sbi, ino, APPEND_INO);
 362         clear_inode_flag(inode, FI_APPEND_WRITE);
 363 flush_out:
 364         if (!atomic && F2FS_OPTION(sbi).fsync_mode != FSYNC_MODE_NOBARRIER)
 365                 ret = f2fs_issue_flush(sbi, inode->i_ino);
 366         if (!ret) {
 367                 f2fs_remove_ino_entry(sbi, ino, UPDATE_INO);
 368                 clear_inode_flag(inode, FI_UPDATE_WRITE);
 369                 f2fs_remove_ino_entry(sbi, ino, FLUSH_INO);
 370         }
 371         f2fs_update_time(sbi, REQ_TIME);
 372 out:
 373         trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret);
 374         return ret;
 375 }
 376
 377 int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
 378 {
 379         if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(file)))))
 380                 return -EIO;
 381         return f2fs_do_sync_file(file, start, end, datasync, false);
 382 }
 383
 384 static bool __found_offset(struct address_space *mapping, block_t blkaddr,
 385                                 pgoff_t index, int whence)
 386 {
 387         switch (whence) {
 388         case SEEK_DATA:
 389                 if (__is_valid_data_blkaddr(blkaddr))
 390                         return true;
 391                 if (blkaddr == NEW_ADDR &&
 392                     xa_get_mark(&mapping->i_pages, index, PAGECACHE_TAG_DIRTY))
 393                         return true;
 394                 break;
 395         case SEEK_HOLE:
 396                 if (blkaddr == NULL_ADDR)
 397                         return true;
 398                 break;
 399         }
 400         return false;
 401 }
 402
 403 static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence)
 404 {
 405         struct inode *inode = file->f_mapping->host;
 406         loff_t maxbytes = inode->i_sb->s_maxbytes;
 407         struct dnode_of_data dn;
 408         pgoff_t pgofs, end_offset;
 409         loff_t data_ofs = offset;
 410         loff_t isize;
 411         int err = 0;
 412
 413         inode_lock(inode);
 414
 415         isize = i_size_read(inode);
 416         if (offset >= isize)
 417                 goto fail;
 418
 419         /* handle inline data case */
 420         if (f2fs_has_inline_data(inode)) {
 421                 if (whence == SEEK_HOLE) {
 422                         data_ofs = isize;
 423                         goto found;
 424                 } else if (whence == SEEK_DATA) {
 425                         data_ofs = offset;
 426                         goto found;
 427                 }
 428         }
 429
 430         pgofs = (pgoff_t)(offset >> PAGE_SHIFT);
 431
 432         for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_SHIFT) {
 433                 set_new_dnode(&dn, inode, NULL, NULL, 0);
 434                 err = f2fs_get_dnode_of_data(&dn, pgofs, LOOKUP_NODE);
 435                 if (err && err != -ENOENT) {
 436                         goto fail;
 437                 } else if (err == -ENOENT) {
 438                         /* direct node does not exists */
 439                         if (whence == SEEK_DATA) {
 440                                 pgofs = f2fs_get_next_page_offset(&dn, pgofs);
 441                                 continue;
 442                         } else {
 443                                 goto found;
 444                         }
 445                 }
 446
 447                 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
 448
 449                 /* find data/hole in dnode block */
 450                 for (; dn.ofs_in_node < end_offset;
 451                                 dn.ofs_in_node++, pgofs++,
 452                                 data_ofs = (loff_t)pgofs << PAGE_SHIFT) {
 453                         block_t blkaddr;
 454
 455                         blkaddr = f2fs_data_blkaddr(&dn);
 456
 457                         if (__is_valid_data_blkaddr(blkaddr) &&
 458                                 !f2fs_is_valid_blkaddr(F2FS_I_SB(inode),
 459                                         blkaddr, DATA_GENERIC_ENHANCE)) {
 460                                 f2fs_put_dnode(&dn);
 461                                 goto fail;
 462                         }
 463
 464                         if (__found_offset(file->f_mapping, blkaddr,
 465                                                         pgofs, whence)) {
 466                                 f2fs_put_dnode(&dn);
 467                                 goto found;
 468                         }
 469                 }
 470                 f2fs_put_dnode(&dn);
 471         }
 472
 473         if (whence == SEEK_DATA)
 474                 goto fail;
 475 found:
 476         if (whence == SEEK_HOLE && data_ofs > isize)
 477                 data_ofs = isize;
 478         inode_unlock(inode);
 479         return vfs_setpos(file, data_ofs, maxbytes);
 480 fail:
 481         inode_unlock(inode);
 482         return -ENXIO;
 483 }
 484
 485 static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence)
 486 {
 487         struct inode *inode = file->f_mapping->host;
 488         loff_t maxbytes = inode->i_sb->s_maxbytes;
 489
 490         if (f2fs_compressed_file(inode))
 491                 maxbytes = max_file_blocks(inode) << F2FS_BLKSIZE_BITS;
 492
 493         switch (whence) {
 494         case SEEK_SET:
 495         case SEEK_CUR:
 496         case SEEK_END:
 497                 return generic_file_llseek_size(file, offset, whence,
 498                                                 maxbytes, i_size_read(inode));
 499         case SEEK_DATA:
 500         case SEEK_HOLE:
 501                 if (offset < 0)
 502                         return -ENXIO;
 503                 return f2fs_seek_block(file, offset, whence);
 504         }
 505
 506         return -EINVAL;
 507 }
 508
 509 static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma)
 510 {
 511         struct inode *inode = file_inode(file);
 512
 513         if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
 514                 return -EIO;
 515
 516         if (!f2fs_is_compress_backend_ready(inode))
 517                 return -EOPNOTSUPP;
 518
 519         file_accessed(file);
 520         vma->vm_ops = &f2fs_file_vm_ops;
 521         set_inode_flag(inode, FI_MMAP_FILE);
 522         return 0;
 523 }
 524
 525 static int f2fs_file_open(struct inode *inode, struct file *filp)
 526 {
 527         int err = fscrypt_file_open(inode, filp);
 528
 529         if (err)
 530                 return err;
 531
 532         if (!f2fs_is_compress_backend_ready(inode))
 533                 return -EOPNOTSUPP;
 534
 535         err = fsverity_file_open(inode, filp);
 536         if (err)
 537                 return err;
 538
 539         filp->f_mode |= FMODE_NOWAIT;
 540
 541         return dquot_file_open(inode, filp);
 542 }
 543
 544 void f2fs_truncate_data_blocks_range(struct dnode_of_data *dn, int count)
 545 {
 546         struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
 547         struct f2fs_node *raw_node;
 548         int nr_free = 0, ofs = dn->ofs_in_node, len = count;
 549         __le32 *addr;
 550         int base = 0;
 551         bool compressed_cluster = false;
 552         int cluster_index = 0, valid_blocks = 0;
 553         int cluster_size = F2FS_I(dn->inode)->i_cluster_size;
 554         bool released = !atomic_read(&F2FS_I(dn->inode)->i_compr_blocks);
 555
 556         if (IS_INODE(dn->node_page) && f2fs_has_extra_attr(dn->inode))
 557                 base = get_extra_isize(dn->inode);
 558
 559         raw_node = F2FS_NODE(dn->node_page);
 560         addr = blkaddr_in_node(raw_node) + base + ofs;
 561
 562         /* Assumption: truncateion starts with cluster */
 563         for (; count > 0; count--, addr++, dn->ofs_in_node++, cluster_index++) {
 564                 block_t blkaddr = le32_to_cpu(*addr);
 565
 566                 if (f2fs_compressed_file(dn->inode) &&
 567                                         !(cluster_index & (cluster_size - 1))) {
 568                         if (compressed_cluster)
 569                                 f2fs_i_compr_blocks_update(dn->inode,
 570                                                         valid_blocks, false);
 571                         compressed_cluster = (blkaddr == COMPRESS_ADDR);
 572                         valid_blocks = 0;
 573                 }
 574
 575                 if (blkaddr == NULL_ADDR)
 576                         continue;
 577
 578                 dn->data_blkaddr = NULL_ADDR;
 579                 f2fs_set_data_blkaddr(dn);
 580
 581                 if (__is_valid_data_blkaddr(blkaddr)) {
 582                         if (!f2fs_is_valid_blkaddr(sbi, blkaddr,
 583                                         DATA_GENERIC_ENHANCE))
 584                                 continue;
 585                         if (compressed_cluster)
 586                                 valid_blocks++;
 587                 }
 588
 589                 if (dn->ofs_in_node == 0 && IS_INODE(dn->node_page))
 590                         clear_inode_flag(dn->inode, FI_FIRST_BLOCK_WRITTEN);
 591
 592                 f2fs_invalidate_blocks(sbi, blkaddr);
 593
 594                 if (!released || blkaddr != COMPRESS_ADDR)
 595                         nr_free++;
 596         }
 597
 598         if (compressed_cluster)
 599                 f2fs_i_compr_blocks_update(dn->inode, valid_blocks, false);
 600
 601         if (nr_free) {
 602                 pgoff_t fofs;
 603                 /*
 604                  * once we invalidate valid blkaddr in range [ofs, ofs + count],
 605                  * we will invalidate all blkaddr in the whole range.
 606                  */
 607                 fofs = f2fs_start_bidx_of_node(ofs_of_node(dn->node_page),
 608                                                         dn->inode) + ofs;
 609                 f2fs_update_extent_cache_range(dn, fofs, 0, len);
 610                 dec_valid_block_count(sbi, dn->inode, nr_free);
 611         }
 612         dn->ofs_in_node = ofs;
 613
 614         f2fs_update_time(sbi, REQ_TIME);
 615         trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid,
 616                                          dn->ofs_in_node, nr_free);
 617 }
 618
 619 void f2fs_truncate_data_blocks(struct dnode_of_data *dn)
 620 {
 621         f2fs_truncate_data_blocks_range(dn, ADDRS_PER_BLOCK(dn->inode));
 622 }
 623
 624 static int truncate_partial_data_page(struct inode *inode, u64 from,
 625                                                                 bool cache_only)
 626 {
 627         loff_t offset = from & (PAGE_SIZE - 1);
 628         pgoff_t index = from >> PAGE_SHIFT;
 629         struct address_space *mapping = inode->i_mapping;
 630         struct page *page;
 631
 632         if (!offset && !cache_only)
 633                 return 0;
 634
 635         if (cache_only) {
 636                 page = find_lock_page(mapping, index);
 637                 if (page && PageUptodate(page))
 638                         goto truncate_out;
 639                 f2fs_put_page(page, 1);
 640                 return 0;
 641         }
 642
 643         page = f2fs_get_lock_data_page(inode, index, true);
 644         if (IS_ERR(page))
 645                 return PTR_ERR(page) == -ENOENT ? 0 : PTR_ERR(page);
 646 truncate_out:
 647         f2fs_wait_on_page_writeback(page, DATA, true, true);
 648         zero_user(page, offset, PAGE_SIZE - offset);
 649
 650         /* An encrypted inode should have a key and truncate the last page. */
 651         f2fs_bug_on(F2FS_I_SB(inode), cache_only && IS_ENCRYPTED(inode));
 652         if (!cache_only)
 653                 set_page_dirty(page);
 654         f2fs_put_page(page, 1);
 655         return 0;
 656 }
 657
 658 int f2fs_do_truncate_blocks(struct inode *inode, u64 from, bool lock)
 659 {
 660         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 661         struct dnode_of_data dn;
 662         pgoff_t free_from;
 663         int count = 0, err = 0;
 664         struct page *ipage;
 665         bool truncate_page = false;
 666
 667         trace_f2fs_truncate_blocks_enter(inode, from);
 668
 669         free_from = (pgoff_t)F2FS_BLK_ALIGN(from);
 670
 671         if (free_from >= max_file_blocks(inode))
 672                 goto free_partial;
 673
 674         if (lock)
 675                 f2fs_lock_op(sbi);
 676
 677         ipage = f2fs_get_node_page(sbi, inode->i_ino);
 678         if (IS_ERR(ipage)) {
 679                 err = PTR_ERR(ipage);
 680                 goto out;
 681         }
 682
 683         if (f2fs_has_inline_data(inode)) {
 684                 f2fs_truncate_inline_inode(inode, ipage, from);
 685                 f2fs_put_page(ipage, 1);
 686                 truncate_page = true;
 687                 goto out;
 688         }
 689
 690         set_new_dnode(&dn, inode, ipage, NULL, 0);
 691         err = f2fs_get_dnode_of_data(&dn, free_from, LOOKUP_NODE_RA);
 692         if (err) {
 693                 if (err == -ENOENT)
 694                         goto free_next;
 695                 goto out;
 696         }
 697
 698         count = ADDRS_PER_PAGE(dn.node_page, inode);
 699
 700         count -= dn.ofs_in_node;
 701         f2fs_bug_on(sbi, count < 0);
 702
 703         if (dn.ofs_in_node || IS_INODE(dn.node_page)) {
 704                 f2fs_truncate_data_blocks_range(&dn, count);
 705                 free_from += count;
 706         }
 707
 708         f2fs_put_dnode(&dn);
 709 free_next:
 710         err = f2fs_truncate_inode_blocks(inode, free_from);
 711 out:
 712         if (lock)
 713                 f2fs_unlock_op(sbi);
 714 free_partial:
 715         /* lastly zero out the first data page */
 716         if (!err)
 717                 err = truncate_partial_data_page(inode, from, truncate_page);
 718
 719         trace_f2fs_truncate_blocks_exit(inode, err);
 720         return err;
 721 }
 722
 723 int f2fs_truncate_blocks(struct inode *inode, u64 from, bool lock)
 724 {
 725         u64 free_from = from;
 726         int err;
 727
 728 #ifdef CONFIG_F2FS_FS_COMPRESSION
 729         /*
 730          * for compressed file, only support cluster size
 731          * aligned truncation.
 732          */
 733         if (f2fs_compressed_file(inode))
 734                 free_from = round_up(from,
 735                                 F2FS_I(inode)->i_cluster_size << PAGE_SHIFT);
 736 #endif
 737
 738         err = f2fs_do_truncate_blocks(inode, free_from, lock);
 739         if (err)
 740                 return err;
 741
 742 #ifdef CONFIG_F2FS_FS_COMPRESSION
 743         if (from != free_from) {
 744                 err = f2fs_truncate_partial_cluster(inode, from, lock);
 745                 if (err)
 746                         return err;
 747         }
 748 #endif
 749
 750         return 0;
 751 }
 752
 753 int f2fs_truncate(struct inode *inode)
 754 {
 755         int err;
 756
 757         if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
 758                 return -EIO;
 759
 760         if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
 761                                 S_ISLNK(inode->i_mode)))
 762                 return 0;
 763
 764         trace_f2fs_truncate(inode);
 765
 766         if (time_to_inject(F2FS_I_SB(inode), FAULT_TRUNCATE)) {
 767                 f2fs_show_injection_info(F2FS_I_SB(inode), FAULT_TRUNCATE);
 768                 return -EIO;
 769         }
 770
 771         err = dquot_initialize(inode);
 772         if (err)
 773                 return err;
 774
 775         /* we should check inline_data size */
 776         if (!f2fs_may_inline_data(inode)) {
 777                 err = f2fs_convert_inline_inode(inode);
 778                 if (err)
 779                         return err;
 780         }
 781
 782         err = f2fs_truncate_blocks(inode, i_size_read(inode), true);
 783         if (err)
 784                 return err;
 785
 786         inode->i_mtime = inode->i_ctime = current_time(inode);
 787         f2fs_mark_inode_dirty_sync(inode, false);
 788         return 0;
 789 }
 790
 791 int f2fs_getattr(struct user_namespace *mnt_userns, const struct path *path,
 792                  struct kstat *stat, u32 request_mask, unsigned int query_flags)
 793 {
 794         struct inode *inode = d_inode(path->dentry);
 795         struct f2fs_inode_info *fi = F2FS_I(inode);
 796         struct f2fs_inode *ri;
 797         unsigned int flags;
 798
 799         if (f2fs_has_extra_attr(inode) &&
 800                         f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)) &&
 801                         F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) {
 802                 stat->result_mask |= STATX_BTIME;
 803                 stat->btime.tv_sec = fi->i_crtime.tv_sec;
 804                 stat->btime.tv_nsec = fi->i_crtime.tv_nsec;
 805         }
 806
 807         flags = fi->i_flags;
 808         if (flags & F2FS_COMPR_FL)
 809                 stat->attributes |= STATX_ATTR_COMPRESSED;
 810         if (flags & F2FS_APPEND_FL)
 811                 stat->attributes |= STATX_ATTR_APPEND;
 812         if (IS_ENCRYPTED(inode))
 813                 stat->attributes |= STATX_ATTR_ENCRYPTED;
 814         if (flags & F2FS_IMMUTABLE_FL)
 815                 stat->attributes |= STATX_ATTR_IMMUTABLE;
 816         if (flags & F2FS_NODUMP_FL)
 817                 stat->attributes |= STATX_ATTR_NODUMP;
 818         if (IS_VERITY(inode))
 819                 stat->attributes |= STATX_ATTR_VERITY;
 820
 821         stat->attributes_mask |= (STATX_ATTR_COMPRESSED |
 822                                   STATX_ATTR_APPEND |
 823                                   STATX_ATTR_ENCRYPTED |
 824                                   STATX_ATTR_IMMUTABLE |
 825                                   STATX_ATTR_NODUMP |
 826                                   STATX_ATTR_VERITY);
 827
 828         generic_fillattr(&init_user_ns, inode, stat);
 829
 830         /* we need to show initial sectors used for inline_data/dentries */
 831         if ((S_ISREG(inode->i_mode) && f2fs_has_inline_data(inode)) ||
 832                                         f2fs_has_inline_dentry(inode))
 833                 stat->blocks += (stat->size + 511) >> 9;
 834
 835         return 0;
 836 }
 837
 838 #ifdef CONFIG_F2FS_FS_POSIX_ACL
 839 static void __setattr_copy(struct user_namespace *mnt_userns,
 840                            struct inode *inode, const struct iattr *attr)
 841 {
 842         unsigned int ia_valid = attr->ia_valid;
 843
 844         if (ia_valid & ATTR_UID)
 845                 inode->i_uid = attr->ia_uid;
 846         if (ia_valid & ATTR_GID)
 847                 inode->i_gid = attr->ia_gid;
 848         if (ia_valid & ATTR_ATIME)
 849                 inode->i_atime = attr->ia_atime;
 850         if (ia_valid & ATTR_MTIME)
 851                 inode->i_mtime = attr->ia_mtime;
 852         if (ia_valid & ATTR_CTIME)
 853                 inode->i_ctime = attr->ia_ctime;
 854         if (ia_valid & ATTR_MODE) {
 855                 umode_t mode = attr->ia_mode;
 856                 kgid_t kgid = i_gid_into_mnt(mnt_userns, inode);
 857
 858                 if (!in_group_p(kgid) && !capable_wrt_inode_uidgid(mnt_userns, inode, CAP_FSETID))
 859                         mode &= ~S_ISGID;
 860                 set_acl_inode(inode, mode);
 861         }
 862 }
 863 #else
 864 #define __setattr_copy setattr_copy
 865 #endif
 866
 867 int f2fs_setattr(struct user_namespace *mnt_userns, struct dentry *dentry,
 868                  struct iattr *attr)
 869 {
 870         struct inode *inode = d_inode(dentry);
 871         int err;
 872
 873         if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
 874                 return -EIO;
 875
 876         if (unlikely(IS_IMMUTABLE(inode)))
 877                 return -EPERM;
 878
 879         if (unlikely(IS_APPEND(inode) &&
 880                         (attr->ia_valid & (ATTR_MODE | ATTR_UID |
 881                                   ATTR_GID | ATTR_TIMES_SET))))
 882                 return -EPERM;
 883
 884         if ((attr->ia_valid & ATTR_SIZE) &&
 885                 !f2fs_is_compress_backend_ready(inode))
 886                 return -EOPNOTSUPP;
 887
 888         err = setattr_prepare(&init_user_ns, dentry, attr);
 889         if (err)
 890                 return err;
 891
 892         err = fscrypt_prepare_setattr(dentry, attr);
 893         if (err)
 894                 return err;
 895
 896         err = fsverity_prepare_setattr(dentry, attr);
 897         if (err)
 898                 return err;
 899
 900         if (is_quota_modification(inode, attr)) {
 901                 err = dquot_initialize(inode);
 902                 if (err)
 903                         return err;
 904         }
 905         if ((attr->ia_valid & ATTR_UID &&
 906                 !uid_eq(attr->ia_uid, inode->i_uid)) ||
 907                 (attr->ia_valid & ATTR_GID &&
 908                 !gid_eq(attr->ia_gid, inode->i_gid))) {
 909                 f2fs_lock_op(F2FS_I_SB(inode));
 910                 err = dquot_transfer(inode, attr);
 911                 if (err) {
 912                         set_sbi_flag(F2FS_I_SB(inode),
 913                                         SBI_QUOTA_NEED_REPAIR);
 914                         f2fs_unlock_op(F2FS_I_SB(inode));
 915                         return err;
 916                 }
 917                 /*
 918                  * update uid/gid under lock_op(), so that dquot and inode can
 919                  * be updated atomically.
 920                  */
 921                 if (attr->ia_valid & ATTR_UID)
 922                         inode->i_uid = attr->ia_uid;
 923                 if (attr->ia_valid & ATTR_GID)
 924                         inode->i_gid = attr->ia_gid;
 925                 f2fs_mark_inode_dirty_sync(inode, true);
 926                 f2fs_unlock_op(F2FS_I_SB(inode));
 927         }
 928
 929         if (attr->ia_valid & ATTR_SIZE) {
 930                 loff_t old_size = i_size_read(inode);
 931
 932                 if (attr->ia_size > MAX_INLINE_DATA(inode)) {
 933                         /*
 934                          * should convert inline inode before i_size_write to
 935                          * keep smaller than inline_data size with inline flag.
 936                          */
 937                         err = f2fs_convert_inline_inode(inode);
 938                         if (err)
 939                                 return err;
 940                 }
 941
 942                 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
 943                 down_write(&F2FS_I(inode)->i_mmap_sem);
 944
 945                 truncate_setsize(inode, attr->ia_size);
 946
 947                 if (attr->ia_size <= old_size)
 948                         err = f2fs_truncate(inode);
 949                 /*
 950                  * do not trim all blocks after i_size if target size is
 951                  * larger than i_size.
 952                  */
 953                 up_write(&F2FS_I(inode)->i_mmap_sem);
 954                 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
 955                 if (err)
 956                         return err;
 957
 958                 spin_lock(&F2FS_I(inode)->i_size_lock);
 959                 inode->i_mtime = inode->i_ctime = current_time(inode);
 960                 F2FS_I(inode)->last_disk_size = i_size_read(inode);
 961                 spin_unlock(&F2FS_I(inode)->i_size_lock);
 962         }
 963
 964         __setattr_copy(&init_user_ns, inode, attr);
 965
 966         if (attr->ia_valid & ATTR_MODE) {
 967                 err = posix_acl_chmod(&init_user_ns, inode, f2fs_get_inode_mode(inode));
 968
 969                 if (is_inode_flag_set(inode, FI_ACL_MODE)) {
 970                         if (!err)
 971                                 inode->i_mode = F2FS_I(inode)->i_acl_mode;
 972                         clear_inode_flag(inode, FI_ACL_MODE);
 973                 }
 974         }
 975
 976         /* file size may changed here */
 977         f2fs_mark_inode_dirty_sync(inode, true);
 978
 979         /* inode change will produce dirty node pages flushed by checkpoint */
 980         f2fs_balance_fs(F2FS_I_SB(inode), true);
 981
 982         return err;
 983 }
 984
 985 const struct inode_operations f2fs_file_inode_operations = {
 986         .getattr        = f2fs_getattr,
 987         .setattr        = f2fs_setattr,
 988         .get_acl        = f2fs_get_acl,
 989         .set_acl        = f2fs_set_acl,
 990         .listxattr      = f2fs_listxattr,
 991         .fiemap         = f2fs_fiemap,
 992         .fileattr_get   = f2fs_fileattr_get,
 993         .fileattr_set   = f2fs_fileattr_set,
 994 };
 995
 996 static int fill_zero(struct inode *inode, pgoff_t index,
 997                                         loff_t start, loff_t len)
 998 {
 999         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1000         struct page *page;
1001
1002         if (!len)
1003                 return 0;
1004
1005         f2fs_balance_fs(sbi, true);
1006
1007         f2fs_lock_op(sbi);
1008         page = f2fs_get_new_data_page(inode, NULL, index, false);
1009         f2fs_unlock_op(sbi);
1010
1011         if (IS_ERR(page))
1012                 return PTR_ERR(page);
1013
1014         f2fs_wait_on_page_writeback(page, DATA, true, true);
1015         zero_user(page, start, len);
1016         set_page_dirty(page);
1017         f2fs_put_page(page, 1);
1018         return 0;
1019 }
1020
1021 int f2fs_truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end)
1022 {
1023         int err;
1024
1025         while (pg_start < pg_end) {
1026                 struct dnode_of_data dn;
1027                 pgoff_t end_offset, count;
1028
1029                 set_new_dnode(&dn, inode, NULL, NULL, 0);
1030                 err = f2fs_get_dnode_of_data(&dn, pg_start, LOOKUP_NODE);
1031                 if (err) {
1032                         if (err == -ENOENT) {
1033                                 pg_start = f2fs_get_next_page_offset(&dn,
1034                                                                 pg_start);
1035                                 continue;
1036                         }
1037                         return err;
1038                 }
1039
1040                 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
1041                 count = min(end_offset - dn.ofs_in_node, pg_end - pg_start);
1042
1043                 f2fs_bug_on(F2FS_I_SB(inode), count == 0 || count > end_offset);
1044
1045                 f2fs_truncate_data_blocks_range(&dn, count);
1046                 f2fs_put_dnode(&dn);
1047
1048                 pg_start += count;
1049         }
1050         return 0;
1051 }
1052
1053 static int punch_hole(struct inode *inode, loff_t offset, loff_t len)
1054 {
1055         pgoff_t pg_start, pg_end;
1056         loff_t off_start, off_end;
1057         int ret;
1058
1059         ret = f2fs_convert_inline_inode(inode);
1060         if (ret)
1061                 return ret;
1062
1063         pg_start = ((unsigned long long) offset) >> PAGE_SHIFT;
1064         pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT;
1065
1066         off_start = offset & (PAGE_SIZE - 1);
1067         off_end = (offset + len) & (PAGE_SIZE - 1);
1068
1069         if (pg_start == pg_end) {
1070                 ret = fill_zero(inode, pg_start, off_start,
1071                                                 off_end - off_start);
1072                 if (ret)
1073                         return ret;
1074         } else {
1075                 if (off_start) {
1076                         ret = fill_zero(inode, pg_start++, off_start,
1077                                                 PAGE_SIZE - off_start);
1078                         if (ret)
1079                                 return ret;
1080                 }
1081                 if (off_end) {
1082                         ret = fill_zero(inode, pg_end, 0, off_end);
1083                         if (ret)
1084                                 return ret;
1085                 }
1086
1087                 if (pg_start < pg_end) {
1088                         struct address_space *mapping = inode->i_mapping;
1089                         loff_t blk_start, blk_end;
1090                         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1091
1092                         f2fs_balance_fs(sbi, true);
1093
1094                         blk_start = (loff_t)pg_start << PAGE_SHIFT;
1095                         blk_end = (loff_t)pg_end << PAGE_SHIFT;
1096
1097                         down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1098                         down_write(&F2FS_I(inode)->i_mmap_sem);
1099
1100                         truncate_inode_pages_range(mapping, blk_start,
1101                                         blk_end - 1);
1102
1103                         f2fs_lock_op(sbi);
1104                         ret = f2fs_truncate_hole(inode, pg_start, pg_end);
1105                         f2fs_unlock_op(sbi);
1106
1107                         up_write(&F2FS_I(inode)->i_mmap_sem);
1108                         up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1109                 }
1110         }
1111
1112         return ret;
1113 }
1114
1115 static int __read_out_blkaddrs(struct inode *inode, block_t *blkaddr,
1116                                 int *do_replace, pgoff_t off, pgoff_t len)
1117 {
1118         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1119         struct dnode_of_data dn;
1120         int ret, done, i;
1121
1122 next_dnode:
1123         set_new_dnode(&dn, inode, NULL, NULL, 0);
1124         ret = f2fs_get_dnode_of_data(&dn, off, LOOKUP_NODE_RA);
1125         if (ret && ret != -ENOENT) {
1126                 return ret;
1127         } else if (ret == -ENOENT) {
1128                 if (dn.max_level == 0)
1129                         return -ENOENT;
1130                 done = min((pgoff_t)ADDRS_PER_BLOCK(inode) -
1131                                                 dn.ofs_in_node, len);
1132                 blkaddr += done;
1133                 do_replace += done;
1134                 goto next;
1135         }
1136
1137         done = min((pgoff_t)ADDRS_PER_PAGE(dn.node_page, inode) -
1138                                                         dn.ofs_in_node, len);
1139         for (i = 0; i < done; i++, blkaddr++, do_replace++, dn.ofs_in_node++) {
1140                 *blkaddr = f2fs_data_blkaddr(&dn);
1141
1142                 if (__is_valid_data_blkaddr(*blkaddr) &&
1143                         !f2fs_is_valid_blkaddr(sbi, *blkaddr,
1144                                         DATA_GENERIC_ENHANCE)) {
1145                         f2fs_put_dnode(&dn);
1146                         return -EFSCORRUPTED;
1147                 }
1148
1149                 if (!f2fs_is_checkpointed_data(sbi, *blkaddr)) {
1150
1151                         if (f2fs_lfs_mode(sbi)) {
1152                                 f2fs_put_dnode(&dn);
1153                                 return -EOPNOTSUPP;
1154                         }
1155
1156                         /* do not invalidate this block address */
1157                         f2fs_update_data_blkaddr(&dn, NULL_ADDR);
1158                         *do_replace = 1;
1159                 }
1160         }
1161         f2fs_put_dnode(&dn);
1162 next:
1163         len -= done;
1164         off += done;
1165         if (len)
1166                 goto next_dnode;
1167         return 0;
1168 }
1169
1170 static int __roll_back_blkaddrs(struct inode *inode, block_t *blkaddr,
1171                                 int *do_replace, pgoff_t off, int len)
1172 {
1173         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1174         struct dnode_of_data dn;
1175         int ret, i;
1176
1177         for (i = 0; i < len; i++, do_replace++, blkaddr++) {
1178                 if (*do_replace == 0)
1179                         continue;
1180
1181                 set_new_dnode(&dn, inode, NULL, NULL, 0);
1182                 ret = f2fs_get_dnode_of_data(&dn, off + i, LOOKUP_NODE_RA);
1183                 if (ret) {
1184                         dec_valid_block_count(sbi, inode, 1);
1185                         f2fs_invalidate_blocks(sbi, *blkaddr);
1186                 } else {
1187                         f2fs_update_data_blkaddr(&dn, *blkaddr);
1188                 }
1189                 f2fs_put_dnode(&dn);
1190         }
1191         return 0;
1192 }
1193
1194 static int __clone_blkaddrs(struct inode *src_inode, struct inode *dst_inode,
1195                         block_t *blkaddr, int *do_replace,
1196                         pgoff_t src, pgoff_t dst, pgoff_t len, bool full)
1197 {
1198         struct f2fs_sb_info *sbi = F2FS_I_SB(src_inode);
1199         pgoff_t i = 0;
1200         int ret;
1201
1202         while (i < len) {
1203                 if (blkaddr[i] == NULL_ADDR && !full) {
1204                         i++;
1205                         continue;
1206                 }
1207
1208                 if (do_replace[i] || blkaddr[i] == NULL_ADDR) {
1209                         struct dnode_of_data dn;
1210                         struct node_info ni;
1211                         size_t new_size;
1212                         pgoff_t ilen;
1213
1214                         set_new_dnode(&dn, dst_inode, NULL, NULL, 0);
1215                         ret = f2fs_get_dnode_of_data(&dn, dst + i, ALLOC_NODE);
1216                         if (ret)
1217                                 return ret;
1218
1219                         ret = f2fs_get_node_info(sbi, dn.nid, &ni);
1220                         if (ret) {
1221                                 f2fs_put_dnode(&dn);
1222                                 return ret;
1223                         }
1224
1225                         ilen = min((pgoff_t)
1226                                 ADDRS_PER_PAGE(dn.node_page, dst_inode) -
1227                                                 dn.ofs_in_node, len - i);
1228                         do {
1229                                 dn.data_blkaddr = f2fs_data_blkaddr(&dn);
1230                                 f2fs_truncate_data_blocks_range(&dn, 1);
1231
1232                                 if (do_replace[i]) {
1233                                         f2fs_i_blocks_write(src_inode,
1234                                                         1, false, false);
1235                                         f2fs_i_blocks_write(dst_inode,
1236                                                         1, true, false);
1237                                         f2fs_replace_block(sbi, &dn, dn.data_blkaddr,
1238                                         blkaddr[i], ni.version, true, false);
1239
1240                                         do_replace[i] = 0;
1241                                 }
1242                                 dn.ofs_in_node++;
1243                                 i++;
1244                                 new_size = (loff_t)(dst + i) << PAGE_SHIFT;
1245                                 if (dst_inode->i_size < new_size)
1246                                         f2fs_i_size_write(dst_inode, new_size);
1247                         } while (--ilen && (do_replace[i] || blkaddr[i] == NULL_ADDR));
1248
1249                         f2fs_put_dnode(&dn);
1250                 } else {
1251                         struct page *psrc, *pdst;
1252
1253                         psrc = f2fs_get_lock_data_page(src_inode,
1254                                                         src + i, true);
1255                         if (IS_ERR(psrc))
1256                                 return PTR_ERR(psrc);
1257                         pdst = f2fs_get_new_data_page(dst_inode, NULL, dst + i,
1258                                                                 true);
1259                         if (IS_ERR(pdst)) {
1260                                 f2fs_put_page(psrc, 1);
1261                                 return PTR_ERR(pdst);
1262                         }
1263                         f2fs_copy_page(psrc, pdst);
1264                         set_page_dirty(pdst);
1265                         f2fs_put_page(pdst, 1);
1266                         f2fs_put_page(psrc, 1);
1267
1268                         ret = f2fs_truncate_hole(src_inode,
1269                                                 src + i, src + i + 1);
1270                         if (ret)
1271                                 return ret;
1272                         i++;
1273                 }
1274         }
1275         return 0;
1276 }
1277
1278 static int __exchange_data_block(struct inode *src_inode,
1279                         struct inode *dst_inode, pgoff_t src, pgoff_t dst,
1280                         pgoff_t len, bool full)
1281 {
1282         block_t *src_blkaddr;
1283         int *do_replace;
1284         pgoff_t olen;
1285         int ret;
1286
1287         while (len) {
1288                 olen = min((pgoff_t)4 * ADDRS_PER_BLOCK(src_inode), len);
1289
1290                 src_blkaddr = f2fs_kvzalloc(F2FS_I_SB(src_inode),
1291                                         array_size(olen, sizeof(block_t)),
1292                                         GFP_NOFS);
1293                 if (!src_blkaddr)
1294                         return -ENOMEM;
1295
1296                 do_replace = f2fs_kvzalloc(F2FS_I_SB(src_inode),
1297                                         array_size(olen, sizeof(int)),
1298                                         GFP_NOFS);
1299                 if (!do_replace) {
1300                         kvfree(src_blkaddr);
1301                         return -ENOMEM;
1302                 }
1303
1304                 ret = __read_out_blkaddrs(src_inode, src_blkaddr,
1305                                         do_replace, src, olen);
1306                 if (ret)
1307                         goto roll_back;
1308
1309                 ret = __clone_blkaddrs(src_inode, dst_inode, src_blkaddr,
1310                                         do_replace, src, dst, olen, full);
1311                 if (ret)
1312                         goto roll_back;
1313
1314                 src += olen;
1315                 dst += olen;
1316                 len -= olen;
1317
1318                 kvfree(src_blkaddr);
1319                 kvfree(do_replace);
1320         }
1321         return 0;
1322
1323 roll_back:
1324         __roll_back_blkaddrs(src_inode, src_blkaddr, do_replace, src, olen);
1325         kvfree(src_blkaddr);
1326         kvfree(do_replace);
1327         return ret;
1328 }
1329
1330 static int f2fs_do_collapse(struct inode *inode, loff_t offset, loff_t len)
1331 {
1332         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1333         pgoff_t nrpages = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
1334         pgoff_t start = offset >> PAGE_SHIFT;
1335         pgoff_t end = (offset + len) >> PAGE_SHIFT;
1336         int ret;
1337
1338         f2fs_balance_fs(sbi, true);
1339
1340         /* avoid gc operation during block exchange */
1341         down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1342         down_write(&F2FS_I(inode)->i_mmap_sem);
1343
1344         f2fs_lock_op(sbi);
1345         f2fs_drop_extent_tree(inode);
1346         truncate_pagecache(inode, offset);
1347         ret = __exchange_data_block(inode, inode, end, start, nrpages - end, true);
1348         f2fs_unlock_op(sbi);
1349
1350         up_write(&F2FS_I(inode)->i_mmap_sem);
1351         up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1352         return ret;
1353 }
1354
1355 static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len)
1356 {
1357         loff_t new_size;
1358         int ret;
1359
1360         if (offset + len >= i_size_read(inode))
1361                 return -EINVAL;
1362
1363         /* collapse range should be aligned to block size of f2fs. */
1364         if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1))
1365                 return -EINVAL;
1366
1367         ret = f2fs_convert_inline_inode(inode);
1368         if (ret)
1369                 return ret;
1370
1371         /* write out all dirty pages from offset */
1372         ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1373         if (ret)
1374                 return ret;
1375
1376         ret = f2fs_do_collapse(inode, offset, len);
1377         if (ret)
1378                 return ret;
1379
1380         /* write out all moved pages, if possible */
1381         down_write(&F2FS_I(inode)->i_mmap_sem);
1382         filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1383         truncate_pagecache(inode, offset);
1384
1385         new_size = i_size_read(inode) - len;
1386         ret = f2fs_truncate_blocks(inode, new_size, true);
1387         up_write(&F2FS_I(inode)->i_mmap_sem);
1388         if (!ret)
1389                 f2fs_i_size_write(inode, new_size);
1390         return ret;
1391 }
1392
1393 static int f2fs_do_zero_range(struct dnode_of_data *dn, pgoff_t start,
1394                                                                 pgoff_t end)
1395 {
1396         struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
1397         pgoff_t index = start;
1398         unsigned int ofs_in_node = dn->ofs_in_node;
1399         blkcnt_t count = 0;
1400         int ret;
1401
1402         for (; index < end; index++, dn->ofs_in_node++) {
1403                 if (f2fs_data_blkaddr(dn) == NULL_ADDR)
1404                         count++;
1405         }
1406
1407         dn->ofs_in_node = ofs_in_node;
1408         ret = f2fs_reserve_new_blocks(dn, count);
1409         if (ret)
1410                 return ret;
1411
1412         dn->ofs_in_node = ofs_in_node;
1413         for (index = start; index < end; index++, dn->ofs_in_node++) {
1414                 dn->data_blkaddr = f2fs_data_blkaddr(dn);
1415                 /*
1416                  * f2fs_reserve_new_blocks will not guarantee entire block
1417                  * allocation.
1418                  */
1419                 if (dn->data_blkaddr == NULL_ADDR) {
1420                         ret = -ENOSPC;
1421                         break;
1422                 }
1423                 if (dn->data_blkaddr != NEW_ADDR) {
1424                         f2fs_invalidate_blocks(sbi, dn->data_blkaddr);
1425                         dn->data_blkaddr = NEW_ADDR;
1426                         f2fs_set_data_blkaddr(dn);
1427                 }
1428         }
1429
1430         f2fs_update_extent_cache_range(dn, start, 0, index - start);
1431
1432         return ret;
1433 }
1434
1435 static int f2fs_zero_range(struct inode *inode, loff_t offset, loff_t len,
1436                                                                 int mode)
1437 {
1438         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1439         struct address_space *mapping = inode->i_mapping;
1440         pgoff_t index, pg_start, pg_end;
1441         loff_t new_size = i_size_read(inode);
1442         loff_t off_start, off_end;
1443         int ret = 0;
1444
1445         ret = inode_newsize_ok(inode, (len + offset));
1446         if (ret)
1447                 return ret;
1448
1449         ret = f2fs_convert_inline_inode(inode);
1450         if (ret)
1451                 return ret;
1452
1453         ret = filemap_write_and_wait_range(mapping, offset, offset + len - 1);
1454         if (ret)
1455                 return ret;
1456
1457         pg_start = ((unsigned long long) offset) >> PAGE_SHIFT;
1458         pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT;
1459
1460         off_start = offset & (PAGE_SIZE - 1);
1461         off_end = (offset + len) & (PAGE_SIZE - 1);
1462
1463         if (pg_start == pg_end) {
1464                 ret = fill_zero(inode, pg_start, off_start,
1465                                                 off_end - off_start);
1466                 if (ret)
1467                         return ret;
1468
1469                 new_size = max_t(loff_t, new_size, offset + len);
1470         } else {
1471                 if (off_start) {
1472                         ret = fill_zero(inode, pg_start++, off_start,
1473                                                 PAGE_SIZE - off_start);
1474                         if (ret)
1475                                 return ret;
1476
1477                         new_size = max_t(loff_t, new_size,
1478                                         (loff_t)pg_start << PAGE_SHIFT);
1479                 }
1480
1481                 for (index = pg_start; index < pg_end;) {
1482                         struct dnode_of_data dn;
1483                         unsigned int end_offset;
1484                         pgoff_t end;
1485
1486                         down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1487                         down_write(&F2FS_I(inode)->i_mmap_sem);
1488
1489                         truncate_pagecache_range(inode,
1490                                 (loff_t)index << PAGE_SHIFT,
1491                                 ((loff_t)pg_end << PAGE_SHIFT) - 1);
1492
1493                         f2fs_lock_op(sbi);
1494
1495                         set_new_dnode(&dn, inode, NULL, NULL, 0);
1496                         ret = f2fs_get_dnode_of_data(&dn, index, ALLOC_NODE);
1497                         if (ret) {
1498                                 f2fs_unlock_op(sbi);
1499                                 up_write(&F2FS_I(inode)->i_mmap_sem);
1500                                 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1501                                 goto out;
1502                         }
1503
1504                         end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
1505                         end = min(pg_end, end_offset - dn.ofs_in_node + index);
1506
1507                         ret = f2fs_do_zero_range(&dn, index, end);
1508                         f2fs_put_dnode(&dn);
1509
1510                         f2fs_unlock_op(sbi);
1511                         up_write(&F2FS_I(inode)->i_mmap_sem);
1512                         up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1513
1514                         f2fs_balance_fs(sbi, dn.node_changed);
1515
1516                         if (ret)
1517                                 goto out;
1518
1519                         index = end;
1520                         new_size = max_t(loff_t, new_size,
1521                                         (loff_t)index << PAGE_SHIFT);
1522                 }
1523
1524                 if (off_end) {
1525                         ret = fill_zero(inode, pg_end, 0, off_end);
1526                         if (ret)
1527                                 goto out;
1528
1529                         new_size = max_t(loff_t, new_size, offset + len);
1530                 }
1531         }
1532
1533 out:
1534         if (new_size > i_size_read(inode)) {
1535                 if (mode & FALLOC_FL_KEEP_SIZE)
1536                         file_set_keep_isize(inode);
1537                 else
1538                         f2fs_i_size_write(inode, new_size);
1539         }
1540         return ret;
1541 }
1542
1543 static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len)
1544 {
1545         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1546         pgoff_t nr, pg_start, pg_end, delta, idx;
1547         loff_t new_size;
1548         int ret = 0;
1549
1550         new_size = i_size_read(inode) + len;
1551         ret = inode_newsize_ok(inode, new_size);
1552         if (ret)
1553                 return ret;
1554
1555         if (offset >= i_size_read(inode))
1556                 return -EINVAL;
1557
1558         /* insert range should be aligned to block size of f2fs. */
1559         if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1))
1560                 return -EINVAL;
1561
1562         ret = f2fs_convert_inline_inode(inode);
1563         if (ret)
1564                 return ret;
1565
1566         f2fs_balance_fs(sbi, true);
1567
1568         down_write(&F2FS_I(inode)->i_mmap_sem);
1569         ret = f2fs_truncate_blocks(inode, i_size_read(inode), true);
1570         up_write(&F2FS_I(inode)->i_mmap_sem);
1571         if (ret)
1572                 return ret;
1573
1574         /* write out all dirty pages from offset */
1575         ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1576         if (ret)
1577                 return ret;
1578
1579         pg_start = offset >> PAGE_SHIFT;
1580         pg_end = (offset + len) >> PAGE_SHIFT;
1581         delta = pg_end - pg_start;
1582         idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
1583
1584         /* avoid gc operation during block exchange */
1585         down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1586         down_write(&F2FS_I(inode)->i_mmap_sem);
1587         truncate_pagecache(inode, offset);
1588
1589         while (!ret && idx > pg_start) {
1590                 nr = idx - pg_start;
1591                 if (nr > delta)
1592                         nr = delta;
1593                 idx -= nr;
1594
1595                 f2fs_lock_op(sbi);
1596                 f2fs_drop_extent_tree(inode);
1597
1598                 ret = __exchange_data_block(inode, inode, idx,
1599                                         idx + delta, nr, false);
1600                 f2fs_unlock_op(sbi);
1601         }
1602         up_write(&F2FS_I(inode)->i_mmap_sem);
1603         up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1604
1605         /* write out all moved pages, if possible */
1606         down_write(&F2FS_I(inode)->i_mmap_sem);
1607         filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1608         truncate_pagecache(inode, offset);
1609         up_write(&F2FS_I(inode)->i_mmap_sem);
1610
1611         if (!ret)
1612                 f2fs_i_size_write(inode, new_size);
1613         return ret;
1614 }
1615
1616 static int expand_inode_data(struct inode *inode, loff_t offset,
1617                                         loff_t len, int mode)
1618 {
1619         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1620         struct f2fs_map_blocks map = { .m_next_pgofs = NULL,
1621                         .m_next_extent = NULL, .m_seg_type = NO_CHECK_TYPE,
1622                         .m_may_create = true };
1623         pgoff_t pg_start, pg_end;
1624         loff_t new_size = i_size_read(inode);
1625         loff_t off_end;
1626         block_t expanded = 0;
1627         int err;
1628
1629         err = inode_newsize_ok(inode, (len + offset));
1630         if (err)
1631                 return err;
1632
1633         err = f2fs_convert_inline_inode(inode);
1634         if (err)
1635                 return err;
1636
1637         f2fs_balance_fs(sbi, true);
1638
1639         pg_start = ((unsigned long long)offset) >> PAGE_SHIFT;
1640         pg_end = ((unsigned long long)offset + len) >> PAGE_SHIFT;
1641         off_end = (offset + len) & (PAGE_SIZE - 1);
1642
1643         map.m_lblk = pg_start;
1644         map.m_len = pg_end - pg_start;
1645         if (off_end)
1646                 map.m_len++;
1647
1648         if (!map.m_len)
1649                 return 0;
1650
1651         if (f2fs_is_pinned_file(inode)) {
1652                 block_t sec_blks = BLKS_PER_SEC(sbi);
1653                 block_t sec_len = roundup(map.m_len, sec_blks);
1654
1655                 map.m_len = sec_blks;
1656 next_alloc:
1657                 if (has_not_enough_free_secs(sbi, 0,
1658                         GET_SEC_FROM_SEG(sbi, overprovision_segments(sbi)))) {
1659                         down_write(&sbi->gc_lock);
1660                         err = f2fs_gc(sbi, true, false, false, NULL_SEGNO);
1661                         if (err && err != -ENODATA && err != -EAGAIN)
1662                                 goto out_err;
1663                 }
1664
1665                 down_write(&sbi->pin_sem);
1666
1667                 f2fs_lock_op(sbi);
1668                 f2fs_allocate_new_section(sbi, CURSEG_COLD_DATA_PINNED, false);
1669                 f2fs_unlock_op(sbi);
1670
1671                 map.m_seg_type = CURSEG_COLD_DATA_PINNED;
1672                 err = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_DIO);
1673
1674                 up_write(&sbi->pin_sem);
1675
1676                 expanded += map.m_len;
1677                 sec_len -= map.m_len;
1678                 map.m_lblk += map.m_len;
1679                 if (!err && sec_len)
1680                         goto next_alloc;
1681
1682                 map.m_len = expanded;
1683         } else {
1684                 err = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_AIO);
1685                 expanded = map.m_len;
1686         }
1687 out_err:
1688         if (err) {
1689                 pgoff_t last_off;
1690
1691                 if (!expanded)
1692                         return err;
1693
1694                 last_off = pg_start + expanded - 1;
1695
1696                 /* update new size to the failed position */
1697                 new_size = (last_off == pg_end) ? offset + len :
1698                                         (loff_t)(last_off + 1) << PAGE_SHIFT;
1699         } else {
1700                 new_size = ((loff_t)pg_end << PAGE_SHIFT) + off_end;
1701         }
1702
1703         if (new_size > i_size_read(inode)) {
1704                 if (mode & FALLOC_FL_KEEP_SIZE)
1705                         file_set_keep_isize(inode);
1706                 else
1707                         f2fs_i_size_write(inode, new_size);
1708         }
1709
1710         return err;
1711 }
1712
1713 static long f2fs_fallocate(struct file *file, int mode,
1714                                 loff_t offset, loff_t len)
1715 {
1716         struct inode *inode = file_inode(file);
1717         long ret = 0;
1718
1719         if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
1720                 return -EIO;
1721         if (!f2fs_is_checkpoint_ready(F2FS_I_SB(inode)))
1722                 return -ENOSPC;
1723         if (!f2fs_is_compress_backend_ready(inode))
1724                 return -EOPNOTSUPP;
1725
1726         /* f2fs only support ->fallocate for regular file */
1727         if (!S_ISREG(inode->i_mode))
1728                 return -EINVAL;
1729
1730         if (IS_ENCRYPTED(inode) &&
1731                 (mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE)))
1732                 return -EOPNOTSUPP;
1733
1734         if (f2fs_compressed_file(inode) &&
1735                 (mode & (FALLOC_FL_PUNCH_HOLE | FALLOC_FL_COLLAPSE_RANGE |
1736                         FALLOC_FL_ZERO_RANGE | FALLOC_FL_INSERT_RANGE)))
1737                 return -EOPNOTSUPP;
1738
1739         if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE |
1740                         FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE |
1741                         FALLOC_FL_INSERT_RANGE))
1742                 return -EOPNOTSUPP;
1743
1744         inode_lock(inode);
1745
1746         if (mode & FALLOC_FL_PUNCH_HOLE) {
1747                 if (offset >= inode->i_size)
1748                         goto out;
1749
1750                 ret = punch_hole(inode, offset, len);
1751         } else if (mode & FALLOC_FL_COLLAPSE_RANGE) {
1752                 ret = f2fs_collapse_range(inode, offset, len);
1753         } else if (mode & FALLOC_FL_ZERO_RANGE) {
1754                 ret = f2fs_zero_range(inode, offset, len, mode);
1755         } else if (mode & FALLOC_FL_INSERT_RANGE) {
1756                 ret = f2fs_insert_range(inode, offset, len);
1757         } else {
1758                 ret = expand_inode_data(inode, offset, len, mode);
1759         }
1760
1761         if (!ret) {
1762                 inode->i_mtime = inode->i_ctime = current_time(inode);
1763                 f2fs_mark_inode_dirty_sync(inode, false);
1764                 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
1765         }
1766
1767 out:
1768         inode_unlock(inode);
1769
1770         trace_f2fs_fallocate(inode, mode, offset, len, ret);
1771         return ret;
1772 }
1773
1774 static int f2fs_release_file(struct inode *inode, struct file *filp)
1775 {
1776         /*
1777          * f2fs_relase_file is called at every close calls. So we should
1778          * not drop any inmemory pages by close called by other process.
1779          */
1780         if (!(filp->f_mode & FMODE_WRITE) ||
1781                         atomic_read(&inode->i_writecount) != 1)
1782                 return 0;
1783
1784         /* some remained atomic pages should discarded */
1785         if (f2fs_is_atomic_file(inode))
1786                 f2fs_drop_inmem_pages(inode);
1787         if (f2fs_is_volatile_file(inode)) {
1788                 set_inode_flag(inode, FI_DROP_CACHE);
1789                 filemap_fdatawrite(inode->i_mapping);
1790                 clear_inode_flag(inode, FI_DROP_CACHE);
1791                 clear_inode_flag(inode, FI_VOLATILE_FILE);
1792                 stat_dec_volatile_write(inode);
1793         }
1794         return 0;
1795 }
1796
1797 static int f2fs_file_flush(struct file *file, fl_owner_t id)
1798 {
1799         struct inode *inode = file_inode(file);
1800
1801         /*
1802          * If the process doing a transaction is crashed, we should do
1803          * roll-back. Otherwise, other reader/write can see corrupted database
1804          * until all the writers close its file. Since this should be done
1805          * before dropping file lock, it needs to do in ->flush.
1806          */
1807         if (f2fs_is_atomic_file(inode) &&
1808                         F2FS_I(inode)->inmem_task == current)
1809                 f2fs_drop_inmem_pages(inode);
1810         return 0;
1811 }
1812
1813 static int f2fs_setflags_common(struct inode *inode, u32 iflags, u32 mask)
1814 {
1815         struct f2fs_inode_info *fi = F2FS_I(inode);
1816         u32 masked_flags = fi->i_flags & mask;
1817
1818         /* mask can be shrunk by flags_valid selector */
1819         iflags &= mask;
1820
1821         /* Is it quota file? Do not allow user to mess with it */
1822         if (IS_NOQUOTA(inode))
1823                 return -EPERM;
1824
1825         if ((iflags ^ masked_flags) & F2FS_CASEFOLD_FL) {
1826                 if (!f2fs_sb_has_casefold(F2FS_I_SB(inode)))
1827                         return -EOPNOTSUPP;
1828                 if (!f2fs_empty_dir(inode))
1829                         return -ENOTEMPTY;
1830         }
1831
1832         if (iflags & (F2FS_COMPR_FL | F2FS_NOCOMP_FL)) {
1833                 if (!f2fs_sb_has_compression(F2FS_I_SB(inode)))
1834                         return -EOPNOTSUPP;
1835                 if ((iflags & F2FS_COMPR_FL) && (iflags & F2FS_NOCOMP_FL))
1836                         return -EINVAL;
1837         }
1838
1839         if ((iflags ^ masked_flags) & F2FS_COMPR_FL) {
1840                 if (masked_flags & F2FS_COMPR_FL) {
1841                         if (!f2fs_disable_compressed_file(inode))
1842                                 return -EINVAL;
1843                 }
1844                 if (iflags & F2FS_NOCOMP_FL)
1845                         return -EINVAL;
1846                 if (iflags & F2FS_COMPR_FL) {
1847                         if (!f2fs_may_compress(inode))
1848                                 return -EINVAL;
1849                         if (S_ISREG(inode->i_mode) && inode->i_size)
1850                                 return -EINVAL;
1851
1852                         set_compress_context(inode);
1853                 }
1854         }
1855         if ((iflags ^ masked_flags) & F2FS_NOCOMP_FL) {
1856                 if (masked_flags & F2FS_COMPR_FL)
1857                         return -EINVAL;
1858         }
1859
1860         fi->i_flags = iflags | (fi->i_flags & ~mask);
1861         f2fs_bug_on(F2FS_I_SB(inode), (fi->i_flags & F2FS_COMPR_FL) &&
1862                                         (fi->i_flags & F2FS_NOCOMP_FL));
1863
1864         if (fi->i_flags & F2FS_PROJINHERIT_FL)
1865                 set_inode_flag(inode, FI_PROJ_INHERIT);
1866         else
1867                 clear_inode_flag(inode, FI_PROJ_INHERIT);
1868
1869         inode->i_ctime = current_time(inode);
1870         f2fs_set_inode_flags(inode);
1871         f2fs_mark_inode_dirty_sync(inode, true);
1872         return 0;
1873 }
1874
1875 /* FS_IOC_[GS]ETFLAGS and FS_IOC_FS[GS]ETXATTR support */
1876
1877 /*
1878  * To make a new on-disk f2fs i_flag gettable via FS_IOC_GETFLAGS, add an entry
1879  * for it to f2fs_fsflags_map[], and add its FS_*_FL equivalent to
1880  * F2FS_GETTABLE_FS_FL.  To also make it settable via FS_IOC_SETFLAGS, also add
1881  * its FS_*_FL equivalent to F2FS_SETTABLE_FS_FL.
1882  *
1883  * Translating flags to fsx_flags value used by FS_IOC_FSGETXATTR and
1884  * FS_IOC_FSSETXATTR is done by the VFS.
1885  */
1886
1887 static const struct {
1888         u32 iflag;
1889         u32 fsflag;
1890 } f2fs_fsflags_map[] = {
1891         { F2FS_COMPR_FL,        FS_COMPR_FL },
1892         { F2FS_SYNC_FL,         FS_SYNC_FL },
1893         { F2FS_IMMUTABLE_FL,    FS_IMMUTABLE_FL },
1894         { F2FS_APPEND_FL,       FS_APPEND_FL },
1895         { F2FS_NODUMP_FL,       FS_NODUMP_FL },
1896         { F2FS_NOATIME_FL,      FS_NOATIME_FL },
1897         { F2FS_NOCOMP_FL,       FS_NOCOMP_FL },
1898         { F2FS_INDEX_FL,        FS_INDEX_FL },
1899         { F2FS_DIRSYNC_FL,      FS_DIRSYNC_FL },
1900         { F2FS_PROJINHERIT_FL,  FS_PROJINHERIT_FL },
1901         { F2FS_CASEFOLD_FL,     FS_CASEFOLD_FL },
1902 };
1903
1904 #define F2FS_GETTABLE_FS_FL (           \
1905                 FS_COMPR_FL |           \
1906                 FS_SYNC_FL |            \
1907                 FS_IMMUTABLE_FL |       \
1908                 FS_APPEND_FL |          \
1909                 FS_NODUMP_FL |          \
1910                 FS_NOATIME_FL |         \
1911                 FS_NOCOMP_FL |          \
1912                 FS_INDEX_FL |           \
1913                 FS_DIRSYNC_FL |         \
1914                 FS_PROJINHERIT_FL |     \
1915                 FS_ENCRYPT_FL |         \
1916                 FS_INLINE_DATA_FL |     \
1917                 FS_NOCOW_FL |           \
1918                 FS_VERITY_FL |          \
1919                 FS_CASEFOLD_FL)
1920
1921 #define F2FS_SETTABLE_FS_FL (           \
1922                 FS_COMPR_FL |           \
1923                 FS_SYNC_FL |            \
1924                 FS_IMMUTABLE_FL |       \
1925                 FS_APPEND_FL |          \
1926                 FS_NODUMP_FL |          \
1927                 FS_NOATIME_FL |         \
1928                 FS_NOCOMP_FL |          \
1929                 FS_DIRSYNC_FL |         \
1930                 FS_PROJINHERIT_FL |     \
1931                 FS_CASEFOLD_FL)
1932
1933 /* Convert f2fs on-disk i_flags to FS_IOC_{GET,SET}FLAGS flags */
1934 static inline u32 f2fs_iflags_to_fsflags(u32 iflags)
1935 {
1936         u32 fsflags = 0;
1937         int i;
1938
1939         for (i = 0; i < ARRAY_SIZE(f2fs_fsflags_map); i++)
1940                 if (iflags & f2fs_fsflags_map[i].iflag)
1941                         fsflags |= f2fs_fsflags_map[i].fsflag;
1942
1943         return fsflags;
1944 }
1945
1946 /* Convert FS_IOC_{GET,SET}FLAGS flags to f2fs on-disk i_flags */
1947 static inline u32 f2fs_fsflags_to_iflags(u32 fsflags)
1948 {
1949         u32 iflags = 0;
1950         int i;
1951
1952         for (i = 0; i < ARRAY_SIZE(f2fs_fsflags_map); i++)
1953                 if (fsflags & f2fs_fsflags_map[i].fsflag)
1954                         iflags |= f2fs_fsflags_map[i].iflag;
1955
1956         return iflags;
1957 }
1958
1959 static int f2fs_ioc_getversion(struct file *filp, unsigned long arg)
1960 {
1961         struct inode *inode = file_inode(filp);
1962
1963         return put_user(inode->i_generation, (int __user *)arg);
1964 }
1965
1966 static int f2fs_ioc_start_atomic_write(struct file *filp)
1967 {
1968         struct inode *inode = file_inode(filp);
1969         struct f2fs_inode_info *fi = F2FS_I(inode);
1970         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1971         int ret;
1972
1973         if (!inode_owner_or_capable(&init_user_ns, inode))
1974                 return -EACCES;
1975
1976         if (!S_ISREG(inode->i_mode))
1977                 return -EINVAL;
1978
1979         if (filp->f_flags & O_DIRECT)
1980                 return -EINVAL;
1981
1982         ret = mnt_want_write_file(filp);
1983         if (ret)
1984                 return ret;
1985
1986         inode_lock(inode);
1987
1988         f2fs_disable_compressed_file(inode);
1989
1990         if (f2fs_is_atomic_file(inode)) {
1991                 if (is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST))
1992                         ret = -EINVAL;
1993                 goto out;
1994         }
1995
1996         ret = f2fs_convert_inline_inode(inode);
1997         if (ret)
1998                 goto out;
1999
2000         down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
2001
2002         /*
2003          * Should wait end_io to count F2FS_WB_CP_DATA correctly by
2004          * f2fs_is_atomic_file.
2005          */
2006         if (get_dirty_pages(inode))
2007                 f2fs_warn(F2FS_I_SB(inode), "Unexpected flush for atomic writes: ino=%lu, npages=%u",
2008                           inode->i_ino, get_dirty_pages(inode));
2009         ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
2010         if (ret) {
2011                 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
2012                 goto out;
2013         }
2014
2015         spin_lock(&sbi->inode_lock[ATOMIC_FILE]);
2016         if (list_empty(&fi->inmem_ilist))
2017                 list_add_tail(&fi->inmem_ilist, &sbi->inode_list[ATOMIC_FILE]);
2018         sbi->atomic_files++;
2019         spin_unlock(&sbi->inode_lock[ATOMIC_FILE]);
2020
2021         /* add inode in inmem_list first and set atomic_file */
2022         set_inode_flag(inode, FI_ATOMIC_FILE);
2023         clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST);
2024         up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
2025
2026         f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
2027         F2FS_I(inode)->inmem_task = current;
2028         stat_update_max_atomic_write(inode);
2029 out:
2030         inode_unlock(inode);
2031         mnt_drop_write_file(filp);
2032         return ret;
2033 }
2034
2035 static int f2fs_ioc_commit_atomic_write(struct file *filp)
2036 {
2037         struct inode *inode = file_inode(filp);
2038         int ret;
2039
2040         if (!inode_owner_or_capable(&init_user_ns, inode))
2041                 return -EACCES;
2042
2043         ret = mnt_want_write_file(filp);
2044         if (ret)
2045                 return ret;
2046
2047         f2fs_balance_fs(F2FS_I_SB(inode), true);
2048
2049         inode_lock(inode);
2050
2051         if (f2fs_is_volatile_file(inode)) {
2052                 ret = -EINVAL;
2053                 goto err_out;
2054         }
2055
2056         if (f2fs_is_atomic_file(inode)) {
2057                 ret = f2fs_commit_inmem_pages(inode);
2058                 if (ret)
2059                         goto err_out;
2060
2061                 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true);
2062                 if (!ret)
2063                         f2fs_drop_inmem_pages(inode);
2064         } else {
2065                 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 1, false);
2066         }
2067 err_out:
2068         if (is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST)) {
2069                 clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST);
2070                 ret = -EINVAL;
2071         }
2072         inode_unlock(inode);
2073         mnt_drop_write_file(filp);
2074         return ret;
2075 }
2076
2077 static int f2fs_ioc_start_volatile_write(struct file *filp)
2078 {
2079         struct inode *inode = file_inode(filp);
2080         int ret;
2081
2082         if (!inode_owner_or_capable(&init_user_ns, inode))
2083                 return -EACCES;
2084
2085         if (!S_ISREG(inode->i_mode))
2086                 return -EINVAL;
2087
2088         ret = mnt_want_write_file(filp);
2089         if (ret)
2090                 return ret;
2091
2092         inode_lock(inode);
2093
2094         if (f2fs_is_volatile_file(inode))
2095                 goto out;
2096
2097         ret = f2fs_convert_inline_inode(inode);
2098         if (ret)
2099                 goto out;
2100
2101         stat_inc_volatile_write(inode);
2102         stat_update_max_volatile_write(inode);
2103
2104         set_inode_flag(inode, FI_VOLATILE_FILE);
2105         f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
2106 out:
2107         inode_unlock(inode);
2108         mnt_drop_write_file(filp);
2109         return ret;
2110 }
2111
2112 static int f2fs_ioc_release_volatile_write(struct file *filp)
2113 {
2114         struct inode *inode = file_inode(filp);
2115         int ret;
2116
2117         if (!inode_owner_or_capable(&init_user_ns, inode))
2118                 return -EACCES;
2119
2120         ret = mnt_want_write_file(filp);
2121         if (ret)
2122                 return ret;
2123
2124         inode_lock(inode);
2125
2126         if (!f2fs_is_volatile_file(inode))
2127                 goto out;
2128
2129         if (!f2fs_is_first_block_written(inode)) {
2130                 ret = truncate_partial_data_page(inode, 0, true);
2131                 goto out;
2132         }
2133
2134         ret = punch_hole(inode, 0, F2FS_BLKSIZE);
2135 out:
2136         inode_unlock(inode);
2137         mnt_drop_write_file(filp);
2138         return ret;
2139 }
2140
2141 static int f2fs_ioc_abort_volatile_write(struct file *filp)
2142 {
2143         struct inode *inode = file_inode(filp);
2144         int ret;
2145
2146         if (!inode_owner_or_capable(&init_user_ns, inode))
2147                 return -EACCES;
2148
2149         ret = mnt_want_write_file(filp);
2150         if (ret)
2151                 return ret;
2152
2153         inode_lock(inode);
2154
2155         if (f2fs_is_atomic_file(inode))
2156                 f2fs_drop_inmem_pages(inode);
2157         if (f2fs_is_volatile_file(inode)) {
2158                 clear_inode_flag(inode, FI_VOLATILE_FILE);
2159                 stat_dec_volatile_write(inode);
2160                 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true);
2161         }
2162
2163         clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST);
2164
2165         inode_unlock(inode);
2166
2167         mnt_drop_write_file(filp);
2168         f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
2169         return ret;
2170 }
2171
2172 static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg)
2173 {
2174         struct inode *inode = file_inode(filp);
2175         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2176         struct super_block *sb = sbi->sb;
2177         __u32 in;
2178         int ret = 0;
2179
2180         if (!capable(CAP_SYS_ADMIN))
2181                 return -EPERM;
2182
2183         if (get_user(in, (__u32 __user *)arg))
2184                 return -EFAULT;
2185
2186         if (in != F2FS_GOING_DOWN_FULLSYNC) {
2187                 ret = mnt_want_write_file(filp);
2188                 if (ret) {
2189                         if (ret == -EROFS) {
2190                                 ret = 0;
2191                                 f2fs_stop_checkpoint(sbi, false);
2192                                 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
2193                                 trace_f2fs_shutdown(sbi, in, ret);
2194                         }
2195                         return ret;
2196                 }
2197         }
2198
2199         switch (in) {
2200         case F2FS_GOING_DOWN_FULLSYNC:
2201                 ret = freeze_bdev(sb->s_bdev);
2202                 if (ret)
2203                         goto out;
2204                 f2fs_stop_checkpoint(sbi, false);
2205                 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
2206                 thaw_bdev(sb->s_bdev);
2207                 break;
2208         case F2FS_GOING_DOWN_METASYNC:
2209                 /* do checkpoint only */
2210                 ret = f2fs_sync_fs(sb, 1);
2211                 if (ret)
2212                         goto out;
2213                 f2fs_stop_checkpoint(sbi, false);
2214                 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
2215                 break;
2216         case F2FS_GOING_DOWN_NOSYNC:
2217                 f2fs_stop_checkpoint(sbi, false);
2218                 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
2219                 break;
2220         case F2FS_GOING_DOWN_METAFLUSH:
2221                 f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_META_IO);
2222                 f2fs_stop_checkpoint(sbi, false);
2223                 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
2224                 break;
2225         case F2FS_GOING_DOWN_NEED_FSCK:
2226                 set_sbi_flag(sbi, SBI_NEED_FSCK);
2227                 set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
2228                 set_sbi_flag(sbi, SBI_IS_DIRTY);
2229                 /* do checkpoint only */
2230                 ret = f2fs_sync_fs(sb, 1);
2231                 goto out;
2232         default:
2233                 ret = -EINVAL;
2234                 goto out;
2235         }
2236
2237         f2fs_stop_gc_thread(sbi);
2238         f2fs_stop_discard_thread(sbi);
2239
2240         f2fs_drop_discard_cmd(sbi);
2241         clear_opt(sbi, DISCARD);
2242
2243         f2fs_update_time(sbi, REQ_TIME);
2244 out:
2245         if (in != F2FS_GOING_DOWN_FULLSYNC)
2246                 mnt_drop_write_file(filp);
2247
2248         trace_f2fs_shutdown(sbi, in, ret);
2249
2250         return ret;
2251 }
2252
2253 static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg)
2254 {
2255         struct inode *inode = file_inode(filp);
2256         struct super_block *sb = inode->i_sb;
2257         struct request_queue *q = bdev_get_queue(sb->s_bdev);
2258         struct fstrim_range range;
2259         int ret;
2260
2261         if (!capable(CAP_SYS_ADMIN))
2262                 return -EPERM;
2263
2264         if (!f2fs_hw_support_discard(F2FS_SB(sb)))
2265                 return -EOPNOTSUPP;
2266
2267         if (copy_from_user(&range, (struct fstrim_range __user *)arg,
2268                                 sizeof(range)))
2269                 return -EFAULT;
2270
2271         ret = mnt_want_write_file(filp);
2272         if (ret)
2273                 return ret;
2274
2275         range.minlen = max((unsigned int)range.minlen,
2276                                 q->limits.discard_granularity);
2277         ret = f2fs_trim_fs(F2FS_SB(sb), &range);
2278         mnt_drop_write_file(filp);
2279         if (ret < 0)
2280                 return ret;
2281
2282         if (copy_to_user((struct fstrim_range __user *)arg, &range,
2283                                 sizeof(range)))
2284                 return -EFAULT;
2285         f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
2286         return 0;
2287 }
2288
2289 static bool uuid_is_nonzero(__u8 u[16])
2290 {
2291         int i;
2292
2293         for (i = 0; i < 16; i++)
2294                 if (u[i])
2295                         return true;
2296         return false;
2297 }
2298
2299 static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg)
2300 {
2301         struct inode *inode = file_inode(filp);
2302
2303         if (!f2fs_sb_has_encrypt(F2FS_I_SB(inode)))
2304                 return -EOPNOTSUPP;
2305
2306         f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
2307
2308         return fscrypt_ioctl_set_policy(filp, (const void __user *)arg);
2309 }
2310
2311 static int f2fs_ioc_get_encryption_policy(struct file *filp, unsigned long arg)
2312 {
2313         if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2314                 return -EOPNOTSUPP;
2315         return fscrypt_ioctl_get_policy(filp, (void __user *)arg);
2316 }
2317
2318 static int f2fs_ioc_get_encryption_pwsalt(struct file *filp, unsigned long arg)
2319 {
2320         struct inode *inode = file_inode(filp);
2321         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2322         int err;
2323
2324         if (!f2fs_sb_has_encrypt(sbi))
2325                 return -EOPNOTSUPP;
2326
2327         err = mnt_want_write_file(filp);
2328         if (err)
2329                 return err;
2330
2331         down_write(&sbi->sb_lock);
2332
2333         if (uuid_is_nonzero(sbi->raw_super->encrypt_pw_salt))
2334                 goto got_it;
2335
2336         /* update superblock with uuid */
2337         generate_random_uuid(sbi->raw_super->encrypt_pw_salt);
2338
2339         err = f2fs_commit_super(sbi, false);
2340         if (err) {
2341                 /* undo new data */
2342                 memset(sbi->raw_super->encrypt_pw_salt, 0, 16);
2343                 goto out_err;
2344         }
2345 got_it:
2346         if (copy_to_user((__u8 __user *)arg, sbi->raw_super->encrypt_pw_salt,
2347                                                                         16))
2348                 err = -EFAULT;
2349 out_err:
2350         up_write(&sbi->sb_lock);
2351         mnt_drop_write_file(filp);
2352         return err;
2353 }
2354
2355 static int f2fs_ioc_get_encryption_policy_ex(struct file *filp,
2356                                              unsigned long arg)
2357 {
2358         if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2359                 return -EOPNOTSUPP;
2360
2361         return fscrypt_ioctl_get_policy_ex(filp, (void __user *)arg);
2362 }
2363
2364 static int f2fs_ioc_add_encryption_key(struct file *filp, unsigned long arg)
2365 {
2366         if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2367                 return -EOPNOTSUPP;
2368
2369         return fscrypt_ioctl_add_key(filp, (void __user *)arg);
2370 }
2371
2372 static int f2fs_ioc_remove_encryption_key(struct file *filp, unsigned long arg)
2373 {
2374         if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2375                 return -EOPNOTSUPP;
2376
2377         return fscrypt_ioctl_remove_key(filp, (void __user *)arg);
2378 }
2379
2380 static int f2fs_ioc_remove_encryption_key_all_users(struct file *filp,
2381                                                     unsigned long arg)
2382 {
2383         if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2384                 return -EOPNOTSUPP;
2385
2386         return fscrypt_ioctl_remove_key_all_users(filp, (void __user *)arg);
2387 }
2388
2389 static int f2fs_ioc_get_encryption_key_status(struct file *filp,
2390                                               unsigned long arg)
2391 {
2392         if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2393                 return -EOPNOTSUPP;
2394
2395         return fscrypt_ioctl_get_key_status(filp, (void __user *)arg);
2396 }
2397
2398 static int f2fs_ioc_get_encryption_nonce(struct file *filp, unsigned long arg)
2399 {
2400         if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2401                 return -EOPNOTSUPP;
2402
2403         return fscrypt_ioctl_get_nonce(filp, (void __user *)arg);
2404 }
2405
2406 static int f2fs_ioc_gc(struct file *filp, unsigned long arg)
2407 {
2408         struct inode *inode = file_inode(filp);
2409         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2410         __u32 sync;
2411         int ret;
2412
2413         if (!capable(CAP_SYS_ADMIN))
2414                 return -EPERM;
2415
2416         if (get_user(sync, (__u32 __user *)arg))
2417                 return -EFAULT;
2418
2419         if (f2fs_readonly(sbi->sb))
2420                 return -EROFS;
2421
2422         ret = mnt_want_write_file(filp);
2423         if (ret)
2424                 return ret;
2425
2426         if (!sync) {
2427                 if (!down_write_trylock(&sbi->gc_lock)) {
2428                         ret = -EBUSY;
2429                         goto out;
2430                 }
2431         } else {
2432                 down_write(&sbi->gc_lock);
2433         }
2434
2435         ret = f2fs_gc(sbi, sync, true, false, NULL_SEGNO);
2436 out:
2437         mnt_drop_write_file(filp);
2438         return ret;
2439 }
2440
2441 static int __f2fs_ioc_gc_range(struct file *filp, struct f2fs_gc_range *range)
2442 {
2443         struct f2fs_sb_info *sbi = F2FS_I_SB(file_inode(filp));
2444         u64 end;
2445         int ret;
2446
2447         if (!capable(CAP_SYS_ADMIN))
2448                 return -EPERM;
2449         if (f2fs_readonly(sbi->sb))
2450                 return -EROFS;
2451
2452         end = range->start + range->len;
2453         if (end < range->start || range->start < MAIN_BLKADDR(sbi) ||
2454                                         end >= MAX_BLKADDR(sbi))
2455                 return -EINVAL;
2456
2457         ret = mnt_want_write_file(filp);
2458         if (ret)
2459                 return ret;
2460
2461 do_more:
2462         if (!range->sync) {
2463                 if (!down_write_trylock(&sbi->gc_lock)) {
2464                         ret = -EBUSY;
2465                         goto out;
2466                 }
2467         } else {
2468                 down_write(&sbi->gc_lock);
2469         }
2470
2471         ret = f2fs_gc(sbi, range->sync, true, false,
2472                                 GET_SEGNO(sbi, range->start));
2473         if (ret) {
2474                 if (ret == -EBUSY)
2475                         ret = -EAGAIN;
2476                 goto out;
2477         }
2478         range->start += BLKS_PER_SEC(sbi);
2479         if (range->start <= end)
2480                 goto do_more;
2481 out:
2482         mnt_drop_write_file(filp);
2483         return ret;
2484 }
2485
2486 static int f2fs_ioc_gc_range(struct file *filp, unsigned long arg)
2487 {
2488         struct f2fs_gc_range range;
2489
2490         if (copy_from_user(&range, (struct f2fs_gc_range __user *)arg,
2491                                                         sizeof(range)))
2492                 return -EFAULT;
2493         return __f2fs_ioc_gc_range(filp, &range);
2494 }
2495
2496 static int f2fs_ioc_write_checkpoint(struct file *filp, unsigned long arg)
2497 {
2498         struct inode *inode = file_inode(filp);
2499         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2500         int ret;
2501
2502         if (!capable(CAP_SYS_ADMIN))
2503                 return -EPERM;
2504
2505         if (f2fs_readonly(sbi->sb))
2506                 return -EROFS;
2507
2508         if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
2509                 f2fs_info(sbi, "Skipping Checkpoint. Checkpoints currently disabled.");
2510                 return -EINVAL;
2511         }
2512
2513         ret = mnt_want_write_file(filp);
2514         if (ret)
2515                 return ret;
2516
2517         ret = f2fs_sync_fs(sbi->sb, 1);
2518
2519         mnt_drop_write_file(filp);
2520         return ret;
2521 }
2522
2523 static int f2fs_defragment_range(struct f2fs_sb_info *sbi,
2524                                         struct file *filp,
2525                                         struct f2fs_defragment *range)
2526 {
2527         struct inode *inode = file_inode(filp);
2528         struct f2fs_map_blocks map = { .m_next_extent = NULL,
2529                                         .m_seg_type = NO_CHECK_TYPE,
2530                                         .m_may_create = false };
2531         struct extent_info ei = {0, 0, 0};
2532         pgoff_t pg_start, pg_end, next_pgofs;
2533         unsigned int blk_per_seg = sbi->blocks_per_seg;
2534         unsigned int total = 0, sec_num;
2535         block_t blk_end = 0;
2536         bool fragmented = false;
2537         int err;
2538
2539         /* if in-place-update policy is enabled, don't waste time here */
2540         if (f2fs_should_update_inplace(inode, NULL))
2541                 return -EINVAL;
2542
2543         pg_start = range->start >> PAGE_SHIFT;
2544         pg_end = (range->start + range->len) >> PAGE_SHIFT;
2545
2546         f2fs_balance_fs(sbi, true);
2547
2548         inode_lock(inode);
2549
2550         /* writeback all dirty pages in the range */
2551         err = filemap_write_and_wait_range(inode->i_mapping, range->start,
2552                                                 range->start + range->len - 1);
2553         if (err)
2554                 goto out;
2555
2556         /*
2557          * lookup mapping info in extent cache, skip defragmenting if physical
2558          * block addresses are continuous.
2559          */
2560         if (f2fs_lookup_extent_cache(inode, pg_start, &ei)) {
2561                 if (ei.fofs + ei.len >= pg_end)
2562                         goto out;
2563         }
2564
2565         map.m_lblk = pg_start;
2566         map.m_next_pgofs = &next_pgofs;
2567
2568         /*
2569          * lookup mapping info in dnode page cache, skip defragmenting if all
2570          * physical block addresses are continuous even if there are hole(s)
2571          * in logical blocks.
2572          */
2573         while (map.m_lblk < pg_end) {
2574                 map.m_len = pg_end - map.m_lblk;
2575                 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT);
2576                 if (err)
2577                         goto out;
2578
2579                 if (!(map.m_flags & F2FS_MAP_FLAGS)) {
2580                         map.m_lblk = next_pgofs;
2581                         continue;
2582                 }
2583
2584                 if (blk_end && blk_end != map.m_pblk)
2585                         fragmented = true;
2586
2587                 /* record total count of block that we're going to move */
2588                 total += map.m_len;
2589
2590                 blk_end = map.m_pblk + map.m_len;
2591
2592                 map.m_lblk += map.m_len;
2593         }
2594
2595         if (!fragmented) {
2596                 total = 0;
2597                 goto out;
2598         }
2599
2600         sec_num = DIV_ROUND_UP(total, BLKS_PER_SEC(sbi));
2601
2602         /*
2603          * make sure there are enough free section for LFS allocation, this can
2604          * avoid defragment running in SSR mode when free section are allocated
2605          * intensively
2606          */
2607         if (has_not_enough_free_secs(sbi, 0, sec_num)) {
2608                 err = -EAGAIN;
2609                 goto out;
2610         }
2611
2612         map.m_lblk = pg_start;
2613         map.m_len = pg_end - pg_start;
2614         total = 0;
2615
2616         while (map.m_lblk < pg_end) {
2617                 pgoff_t idx;
2618                 int cnt = 0;
2619
2620 do_map:
2621                 map.m_len = pg_end - map.m_lblk;
2622                 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT);
2623                 if (err)
2624                         goto clear_out;
2625
2626                 if (!(map.m_flags & F2FS_MAP_FLAGS)) {
2627                         map.m_lblk = next_pgofs;
2628                         goto check;
2629                 }
2630
2631                 set_inode_flag(inode, FI_DO_DEFRAG);
2632
2633                 idx = map.m_lblk;
2634                 while (idx < map.m_lblk + map.m_len && cnt < blk_per_seg) {
2635                         struct page *page;
2636
2637                         page = f2fs_get_lock_data_page(inode, idx, true);
2638                         if (IS_ERR(page)) {
2639                                 err = PTR_ERR(page);
2640                                 goto clear_out;
2641                         }
2642
2643                         set_page_dirty(page);
2644                         f2fs_put_page(page, 1);
2645
2646                         idx++;
2647                         cnt++;
2648                         total++;
2649                 }
2650
2651                 map.m_lblk = idx;
2652 check:
2653                 if (map.m_lblk < pg_end && cnt < blk_per_seg)
2654                         goto do_map;
2655
2656                 clear_inode_flag(inode, FI_DO_DEFRAG);
2657
2658                 err = filemap_fdatawrite(inode->i_mapping);
2659                 if (err)
2660                         goto out;
2661         }
2662 clear_out:
2663         clear_inode_flag(inode, FI_DO_DEFRAG);
2664 out:
2665         inode_unlock(inode);
2666         if (!err)
2667                 range->len = (u64)total << PAGE_SHIFT;
2668         return err;
2669 }
2670
2671 static int f2fs_ioc_defragment(struct file *filp, unsigned long arg)
2672 {
2673         struct inode *inode = file_inode(filp);
2674         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2675         struct f2fs_defragment range;
2676         int err;
2677
2678         if (!capable(CAP_SYS_ADMIN))
2679                 return -EPERM;
2680
2681         if (!S_ISREG(inode->i_mode) || f2fs_is_atomic_file(inode))
2682                 return -EINVAL;
2683
2684         if (f2fs_readonly(sbi->sb))
2685                 return -EROFS;
2686
2687         if (copy_from_user(&range, (struct f2fs_defragment __user *)arg,
2688                                                         sizeof(range)))
2689                 return -EFAULT;
2690
2691         /* verify alignment of offset & size */
2692         if (range.start & (F2FS_BLKSIZE - 1) || range.len & (F2FS_BLKSIZE - 1))
2693                 return -EINVAL;
2694
2695         if (unlikely((range.start + range.len) >> PAGE_SHIFT >
2696                                         max_file_blocks(inode)))
2697                 return -EINVAL;
2698
2699         err = mnt_want_write_file(filp);
2700         if (err)
2701                 return err;
2702
2703         err = f2fs_defragment_range(sbi, filp, &range);
2704         mnt_drop_write_file(filp);
2705
2706         f2fs_update_time(sbi, REQ_TIME);
2707         if (err < 0)
2708                 return err;
2709
2710         if (copy_to_user((struct f2fs_defragment __user *)arg, &range,
2711                                                         sizeof(range)))
2712                 return -EFAULT;
2713
2714         return 0;
2715 }
2716
2717 static int f2fs_move_file_range(struct file *file_in, loff_t pos_in,
2718                         struct file *file_out, loff_t pos_out, size_t len)
2719 {
2720         struct inode *src = file_inode(file_in);
2721         struct inode *dst = file_inode(file_out);
2722         struct f2fs_sb_info *sbi = F2FS_I_SB(src);
2723         size_t olen = len, dst_max_i_size = 0;
2724         size_t dst_osize;
2725         int ret;
2726
2727         if (file_in->f_path.mnt != file_out->f_path.mnt ||
2728                                 src->i_sb != dst->i_sb)
2729                 return -EXDEV;
2730
2731         if (unlikely(f2fs_readonly(src->i_sb)))
2732                 return -EROFS;
2733
2734         if (!S_ISREG(src->i_mode) || !S_ISREG(dst->i_mode))
2735                 return -EINVAL;
2736
2737         if (IS_ENCRYPTED(src) || IS_ENCRYPTED(dst))
2738                 return -EOPNOTSUPP;
2739
2740         if (pos_out < 0 || pos_in < 0)
2741                 return -EINVAL;
2742
2743         if (src == dst) {
2744                 if (pos_in == pos_out)
2745                         return 0;
2746                 if (pos_out > pos_in && pos_out < pos_in + len)
2747                         return -EINVAL;
2748         }
2749
2750         inode_lock(src);
2751         if (src != dst) {
2752                 ret = -EBUSY;
2753                 if (!inode_trylock(dst))
2754                         goto out;
2755         }
2756
2757         ret = -EINVAL;
2758         if (pos_in + len > src->i_size || pos_in + len < pos_in)
2759                 goto out_unlock;
2760         if (len == 0)
2761                 olen = len = src->i_size - pos_in;
2762         if (pos_in + len == src->i_size)
2763                 len = ALIGN(src->i_size, F2FS_BLKSIZE) - pos_in;
2764         if (len == 0) {
2765                 ret = 0;
2766                 goto out_unlock;
2767         }
2768
2769         dst_osize = dst->i_size;
2770         if (pos_out + olen > dst->i_size)
2771                 dst_max_i_size = pos_out + olen;
2772
2773         /* verify the end result is block aligned */
2774         if (!IS_ALIGNED(pos_in, F2FS_BLKSIZE) ||
2775                         !IS_ALIGNED(pos_in + len, F2FS_BLKSIZE) ||
2776                         !IS_ALIGNED(pos_out, F2FS_BLKSIZE))
2777                 goto out_unlock;
2778
2779         ret = f2fs_convert_inline_inode(src);
2780         if (ret)
2781                 goto out_unlock;
2782
2783         ret = f2fs_convert_inline_inode(dst);
2784         if (ret)
2785                 goto out_unlock;
2786
2787         /* write out all dirty pages from offset */
2788         ret = filemap_write_and_wait_range(src->i_mapping,
2789                                         pos_in, pos_in + len);
2790         if (ret)
2791                 goto out_unlock;
2792
2793         ret = filemap_write_and_wait_range(dst->i_mapping,
2794                                         pos_out, pos_out + len);
2795         if (ret)
2796                 goto out_unlock;
2797
2798         f2fs_balance_fs(sbi, true);
2799
2800         down_write(&F2FS_I(src)->i_gc_rwsem[WRITE]);
2801         if (src != dst) {
2802                 ret = -EBUSY;
2803                 if (!down_write_trylock(&F2FS_I(dst)->i_gc_rwsem[WRITE]))
2804                         goto out_src;
2805         }
2806
2807         f2fs_lock_op(sbi);
2808         ret = __exchange_data_block(src, dst, pos_in >> F2FS_BLKSIZE_BITS,
2809                                 pos_out >> F2FS_BLKSIZE_BITS,
2810                                 len >> F2FS_BLKSIZE_BITS, false);
2811
2812         if (!ret) {
2813                 if (dst_max_i_size)
2814                         f2fs_i_size_write(dst, dst_max_i_size);
2815                 else if (dst_osize != dst->i_size)
2816                         f2fs_i_size_write(dst, dst_osize);
2817         }
2818         f2fs_unlock_op(sbi);
2819
2820         if (src != dst)
2821                 up_write(&F2FS_I(dst)->i_gc_rwsem[WRITE]);
2822 out_src:
2823         up_write(&F2FS_I(src)->i_gc_rwsem[WRITE]);
2824 out_unlock:
2825         if (src != dst)
2826                 inode_unlock(dst);
2827 out:
2828         inode_unlock(src);
2829         return ret;
2830 }
2831
2832 static int __f2fs_ioc_move_range(struct file *filp,
2833                                 struct f2fs_move_range *range)
2834 {
2835         struct fd dst;
2836         int err;
2837
2838         if (!(filp->f_mode & FMODE_READ) ||
2839                         !(filp->f_mode & FMODE_WRITE))
2840                 return -EBADF;
2841
2842         dst = fdget(range->dst_fd);
2843         if (!dst.file)
2844                 return -EBADF;
2845
2846         if (!(dst.file->f_mode & FMODE_WRITE)) {
2847                 err = -EBADF;
2848                 goto err_out;
2849         }
2850
2851         err = mnt_want_write_file(filp);
2852         if (err)
2853                 goto err_out;
2854
2855         err = f2fs_move_file_range(filp, range->pos_in, dst.file,
2856                                         range->pos_out, range->len);
2857
2858         mnt_drop_write_file(filp);
2859 err_out:
2860         fdput(dst);
2861         return err;
2862 }
2863
2864 static int f2fs_ioc_move_range(struct file *filp, unsigned long arg)
2865 {
2866         struct f2fs_move_range range;
2867
2868         if (copy_from_user(&range, (struct f2fs_move_range __user *)arg,
2869                                                         sizeof(range)))
2870                 return -EFAULT;
2871         return __f2fs_ioc_move_range(filp, &range);
2872 }
2873
2874 static int f2fs_ioc_flush_device(struct file *filp, unsigned long arg)
2875 {
2876         struct inode *inode = file_inode(filp);
2877         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2878         struct sit_info *sm = SIT_I(sbi);
2879         unsigned int start_segno = 0, end_segno = 0;
2880         unsigned int dev_start_segno = 0, dev_end_segno = 0;
2881         struct f2fs_flush_device range;
2882         int ret;
2883
2884         if (!capable(CAP_SYS_ADMIN))
2885                 return -EPERM;
2886
2887         if (f2fs_readonly(sbi->sb))
2888                 return -EROFS;
2889
2890         if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
2891                 return -EINVAL;
2892
2893         if (copy_from_user(&range, (struct f2fs_flush_device __user *)arg,
2894                                                         sizeof(range)))
2895                 return -EFAULT;
2896
2897         if (!f2fs_is_multi_device(sbi) || sbi->s_ndevs - 1 <= range.dev_num ||
2898                         __is_large_section(sbi)) {
2899                 f2fs_warn(sbi, "Can't flush %u in %d for segs_per_sec %u != 1",
2900                           range.dev_num, sbi->s_ndevs, sbi->segs_per_sec);
2901                 return -EINVAL;
2902         }
2903
2904         ret = mnt_want_write_file(filp);
2905         if (ret)
2906                 return ret;
2907
2908         if (range.dev_num != 0)
2909                 dev_start_segno = GET_SEGNO(sbi, FDEV(range.dev_num).start_blk);
2910         dev_end_segno = GET_SEGNO(sbi, FDEV(range.dev_num).end_blk);
2911
2912         start_segno = sm->last_victim[FLUSH_DEVICE];
2913         if (start_segno < dev_start_segno || start_segno >= dev_end_segno)
2914                 start_segno = dev_start_segno;
2915         end_segno = min(start_segno + range.segments, dev_end_segno);
2916
2917         while (start_segno < end_segno) {
2918                 if (!down_write_trylock(&sbi->gc_lock)) {
2919                         ret = -EBUSY;
2920                         goto out;
2921                 }
2922                 sm->last_victim[GC_CB] = end_segno + 1;
2923                 sm->last_victim[GC_GREEDY] = end_segno + 1;
2924                 sm->last_victim[ALLOC_NEXT] = end_segno + 1;
2925                 ret = f2fs_gc(sbi, true, true, true, start_segno);
2926                 if (ret == -EAGAIN)
2927                         ret = 0;
2928                 else if (ret < 0)
2929                         break;
2930                 start_segno++;
2931         }
2932 out:
2933         mnt_drop_write_file(filp);
2934         return ret;
2935 }
2936
2937 static int f2fs_ioc_get_features(struct file *filp, unsigned long arg)
2938 {
2939         struct inode *inode = file_inode(filp);
2940         u32 sb_feature = le32_to_cpu(F2FS_I_SB(inode)->raw_super->feature);
2941
2942         /* Must validate to set it with SQLite behavior in Android. */
2943         sb_feature |= F2FS_FEATURE_ATOMIC_WRITE;
2944
2945         return put_user(sb_feature, (u32 __user *)arg);
2946 }
2947
2948 #ifdef CONFIG_QUOTA
2949 int f2fs_transfer_project_quota(struct inode *inode, kprojid_t kprojid)
2950 {
2951         struct dquot *transfer_to[MAXQUOTAS] = {};
2952         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2953         struct super_block *sb = sbi->sb;
2954         int err = 0;
2955
2956         transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid));
2957         if (!IS_ERR(transfer_to[PRJQUOTA])) {
2958                 err = __dquot_transfer(inode, transfer_to);
2959                 if (err)
2960                         set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2961                 dqput(transfer_to[PRJQUOTA]);
2962         }
2963         return err;
2964 }
2965
2966 static int f2fs_ioc_setproject(struct inode *inode, __u32 projid)
2967 {
2968         struct f2fs_inode_info *fi = F2FS_I(inode);
2969         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2970         struct page *ipage;
2971         kprojid_t kprojid;
2972         int err;
2973
2974         if (!f2fs_sb_has_project_quota(sbi)) {
2975                 if (projid != F2FS_DEF_PROJID)
2976                         return -EOPNOTSUPP;
2977                 else
2978                         return 0;
2979         }
2980
2981         if (!f2fs_has_extra_attr(inode))
2982                 return -EOPNOTSUPP;
2983
2984         kprojid = make_kprojid(&init_user_ns, (projid_t)projid);
2985
2986         if (projid_eq(kprojid, F2FS_I(inode)->i_projid))
2987                 return 0;
2988
2989         err = -EPERM;
2990         /* Is it quota file? Do not allow user to mess with it */
2991         if (IS_NOQUOTA(inode))
2992                 return err;
2993
2994         ipage = f2fs_get_node_page(sbi, inode->i_ino);
2995         if (IS_ERR(ipage))
2996                 return PTR_ERR(ipage);
2997
2998         if (!F2FS_FITS_IN_INODE(F2FS_INODE(ipage), fi->i_extra_isize,
2999                                                                 i_projid)) {
3000                 err = -EOVERFLOW;
3001                 f2fs_put_page(ipage, 1);
3002                 return err;
3003         }
3004         f2fs_put_page(ipage, 1);
3005
3006         err = dquot_initialize(inode);
3007         if (err)
3008                 return err;
3009
3010         f2fs_lock_op(sbi);
3011         err = f2fs_transfer_project_quota(inode, kprojid);
3012         if (err)
3013                 goto out_unlock;
3014
3015         F2FS_I(inode)->i_projid = kprojid;
3016         inode->i_ctime = current_time(inode);
3017         f2fs_mark_inode_dirty_sync(inode, true);
3018 out_unlock:
3019         f2fs_unlock_op(sbi);
3020         return err;
3021 }
3022 #else
3023 int f2fs_transfer_project_quota(struct inode *inode, kprojid_t kprojid)
3024 {
3025         return 0;
3026 }
3027
3028 static int f2fs_ioc_setproject(struct inode *inode, __u32 projid)
3029 {
3030         if (projid != F2FS_DEF_PROJID)
3031                 return -EOPNOTSUPP;
3032         return 0;
3033 }
3034 #endif
3035
3036 int f2fs_fileattr_get(struct dentry *dentry, struct fileattr *fa)
3037 {
3038         struct inode *inode = d_inode(dentry);
3039         struct f2fs_inode_info *fi = F2FS_I(inode);
3040         u32 fsflags = f2fs_iflags_to_fsflags(fi->i_flags);
3041
3042         if (IS_ENCRYPTED(inode))
3043                 fsflags |= FS_ENCRYPT_FL;
3044         if (IS_VERITY(inode))
3045                 fsflags |= FS_VERITY_FL;
3046         if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode))
3047                 fsflags |= FS_INLINE_DATA_FL;
3048         if (is_inode_flag_set(inode, FI_PIN_FILE))
3049                 fsflags |= FS_NOCOW_FL;
3050
3051         fileattr_fill_flags(fa, fsflags & F2FS_GETTABLE_FS_FL);
3052
3053         if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)))
3054                 fa->fsx_projid = from_kprojid(&init_user_ns, fi->i_projid);
3055
3056         return 0;
3057 }
3058
3059 int f2fs_fileattr_set(struct user_namespace *mnt_userns,
3060                       struct dentry *dentry, struct fileattr *fa)
3061 {
3062         struct inode *inode = d_inode(dentry);
3063         u32 fsflags = fa->flags, mask = F2FS_SETTABLE_FS_FL;
3064         u32 iflags;
3065         int err;
3066
3067         if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
3068                 return -EIO;
3069         if (!f2fs_is_checkpoint_ready(F2FS_I_SB(inode)))
3070                 return -ENOSPC;
3071         if (fsflags & ~F2FS_GETTABLE_FS_FL)
3072                 return -EOPNOTSUPP;
3073         fsflags &= F2FS_SETTABLE_FS_FL;
3074         if (!fa->flags_valid)
3075                 mask &= FS_COMMON_FL;
3076
3077         iflags = f2fs_fsflags_to_iflags(fsflags);
3078         if (f2fs_mask_flags(inode->i_mode, iflags) != iflags)
3079                 return -EOPNOTSUPP;
3080
3081         err = f2fs_setflags_common(inode, iflags, f2fs_fsflags_to_iflags(mask));
3082         if (!err)
3083                 err = f2fs_ioc_setproject(inode, fa->fsx_projid);
3084
3085         return err;
3086 }
3087
3088 int f2fs_pin_file_control(struct inode *inode, bool inc)
3089 {
3090         struct f2fs_inode_info *fi = F2FS_I(inode);
3091         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3092
3093         /* Use i_gc_failures for normal file as a risk signal. */
3094         if (inc)
3095                 f2fs_i_gc_failures_write(inode,
3096                                 fi->i_gc_failures[GC_FAILURE_PIN] + 1);
3097
3098         if (fi->i_gc_failures[GC_FAILURE_PIN] > sbi->gc_pin_file_threshold) {
3099                 f2fs_warn(sbi, "%s: Enable GC = ino %lx after %x GC trials",
3100                           __func__, inode->i_ino,
3101                           fi->i_gc_failures[GC_FAILURE_PIN]);
3102                 clear_inode_flag(inode, FI_PIN_FILE);
3103                 return -EAGAIN;
3104         }
3105         return 0;
3106 }
3107
3108 static int f2fs_ioc_set_pin_file(struct file *filp, unsigned long arg)
3109 {
3110         struct inode *inode = file_inode(filp);
3111         __u32 pin;
3112         int ret = 0;
3113
3114         if (get_user(pin, (__u32 __user *)arg))
3115                 return -EFAULT;
3116
3117         if (!S_ISREG(inode->i_mode))
3118                 return -EINVAL;
3119
3120         if (f2fs_readonly(F2FS_I_SB(inode)->sb))
3121                 return -EROFS;
3122
3123         ret = mnt_want_write_file(filp);
3124         if (ret)
3125                 return ret;
3126
3127         inode_lock(inode);
3128
3129         if (f2fs_should_update_outplace(inode, NULL)) {
3130                 ret = -EINVAL;
3131                 goto out;
3132         }
3133
3134         if (!pin) {
3135                 clear_inode_flag(inode, FI_PIN_FILE);
3136                 f2fs_i_gc_failures_write(inode, 0);
3137                 goto done;
3138         }
3139
3140         if (f2fs_pin_file_control(inode, false)) {
3141                 ret = -EAGAIN;
3142                 goto out;
3143         }
3144
3145         ret = f2fs_convert_inline_inode(inode);
3146         if (ret)
3147                 goto out;
3148
3149         if (!f2fs_disable_compressed_file(inode)) {
3150                 ret = -EOPNOTSUPP;
3151                 goto out;
3152         }
3153
3154         set_inode_flag(inode, FI_PIN_FILE);
3155         ret = F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN];
3156 done:
3157         f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
3158 out:
3159         inode_unlock(inode);
3160         mnt_drop_write_file(filp);
3161         return ret;
3162 }
3163
3164 static int f2fs_ioc_get_pin_file(struct file *filp, unsigned long arg)
3165 {
3166         struct inode *inode = file_inode(filp);
3167         __u32 pin = 0;
3168
3169         if (is_inode_flag_set(inode, FI_PIN_FILE))
3170                 pin = F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN];
3171         return put_user(pin, (u32 __user *)arg);
3172 }
3173
3174 int f2fs_precache_extents(struct inode *inode)
3175 {
3176         struct f2fs_inode_info *fi = F2FS_I(inode);
3177         struct f2fs_map_blocks map;
3178         pgoff_t m_next_extent;
3179         loff_t end;
3180         int err;
3181
3182         if (is_inode_flag_set(inode, FI_NO_EXTENT))
3183                 return -EOPNOTSUPP;
3184
3185         map.m_lblk = 0;
3186         map.m_next_pgofs = NULL;
3187         map.m_next_extent = &m_next_extent;
3188         map.m_seg_type = NO_CHECK_TYPE;
3189         map.m_may_create = false;
3190         end = max_file_blocks(inode);
3191
3192         while (map.m_lblk < end) {
3193                 map.m_len = end - map.m_lblk;
3194
3195                 down_write(&fi->i_gc_rwsem[WRITE]);
3196                 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_PRECACHE);
3197                 up_write(&fi->i_gc_rwsem[WRITE]);
3198                 if (err)
3199                         return err;
3200
3201                 map.m_lblk = m_next_extent;
3202         }
3203
3204         return 0;
3205 }
3206
3207 static int f2fs_ioc_precache_extents(struct file *filp, unsigned long arg)
3208 {
3209         return f2fs_precache_extents(file_inode(filp));
3210 }
3211
3212 static int f2fs_ioc_resize_fs(struct file *filp, unsigned long arg)
3213 {
3214         struct f2fs_sb_info *sbi = F2FS_I_SB(file_inode(filp));
3215         __u64 block_count;
3216
3217         if (!capable(CAP_SYS_ADMIN))
3218                 return -EPERM;
3219
3220         if (f2fs_readonly(sbi->sb))
3221                 return -EROFS;
3222
3223         if (copy_from_user(&block_count, (void __user *)arg,
3224                            sizeof(block_count)))
3225                 return -EFAULT;
3226
3227         return f2fs_resize_fs(sbi, block_count);
3228 }
3229
3230 static int f2fs_ioc_enable_verity(struct file *filp, unsigned long arg)
3231 {
3232         struct inode *inode = file_inode(filp);
3233
3234         f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
3235
3236         if (!f2fs_sb_has_verity(F2FS_I_SB(inode))) {
3237                 f2fs_warn(F2FS_I_SB(inode),
3238                           "Can't enable fs-verity on inode %lu: the verity feature is not enabled on this filesystem",
3239                           inode->i_ino);
3240                 return -EOPNOTSUPP;
3241         }
3242
3243         return fsverity_ioctl_enable(filp, (const void __user *)arg);
3244 }
3245
3246 static int f2fs_ioc_measure_verity(struct file *filp, unsigned long arg)
3247 {
3248         if (!f2fs_sb_has_verity(F2FS_I_SB(file_inode(filp))))
3249                 return -EOPNOTSUPP;
3250
3251         return fsverity_ioctl_measure(filp, (void __user *)arg);
3252 }
3253
3254 static int f2fs_ioc_read_verity_metadata(struct file *filp, unsigned long arg)
3255 {
3256         if (!f2fs_sb_has_verity(F2FS_I_SB(file_inode(filp))))
3257                 return -EOPNOTSUPP;
3258
3259         return fsverity_ioctl_read_metadata(filp, (const void __user *)arg);
3260 }
3261
3262 static int f2fs_ioc_getfslabel(struct file *filp, unsigned long arg)
3263 {
3264         struct inode *inode = file_inode(filp);
3265         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3266         char *vbuf;
3267         int count;
3268         int err = 0;
3269
3270         vbuf = f2fs_kzalloc(sbi, MAX_VOLUME_NAME, GFP_KERNEL);
3271         if (!vbuf)
3272                 return -ENOMEM;
3273
3274         down_read(&sbi->sb_lock);
3275         count = utf16s_to_utf8s(sbi->raw_super->volume_name,
3276                         ARRAY_SIZE(sbi->raw_super->volume_name),
3277                         UTF16_LITTLE_ENDIAN, vbuf, MAX_VOLUME_NAME);
3278         up_read(&sbi->sb_lock);
3279
3280         if (copy_to_user((char __user *)arg, vbuf,
3281                                 min(FSLABEL_MAX, count)))
3282                 err = -EFAULT;
3283
3284         kfree(vbuf);
3285         return err;
3286 }
3287
3288 static int f2fs_ioc_setfslabel(struct file *filp, unsigned long arg)
3289 {
3290         struct inode *inode = file_inode(filp);
3291         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3292         char *vbuf;
3293         int err = 0;
3294
3295         if (!capable(CAP_SYS_ADMIN))
3296                 return -EPERM;
3297
3298         vbuf = strndup_user((const char __user *)arg, FSLABEL_MAX);
3299         if (IS_ERR(vbuf))
3300                 return PTR_ERR(vbuf);
3301
3302         err = mnt_want_write_file(filp);
3303         if (err)
3304                 goto out;
3305
3306         down_write(&sbi->sb_lock);
3307
3308         memset(sbi->raw_super->volume_name, 0,
3309                         sizeof(sbi->raw_super->volume_name));
3310         utf8s_to_utf16s(vbuf, strlen(vbuf), UTF16_LITTLE_ENDIAN,
3311                         sbi->raw_super->volume_name,
3312                         ARRAY_SIZE(sbi->raw_super->volume_name));
3313
3314         err = f2fs_commit_super(sbi, false);
3315
3316         up_write(&sbi->sb_lock);
3317
3318         mnt_drop_write_file(filp);
3319 out:
3320         kfree(vbuf);
3321         return err;
3322 }
3323
3324 static int f2fs_get_compress_blocks(struct file *filp, unsigned long arg)
3325 {
3326         struct inode *inode = file_inode(filp);
3327         __u64 blocks;
3328
3329         if (!f2fs_sb_has_compression(F2FS_I_SB(inode)))
3330                 return -EOPNOTSUPP;
3331
3332         if (!f2fs_compressed_file(inode))
3333                 return -EINVAL;
3334
3335         blocks = atomic_read(&F2FS_I(inode)->i_compr_blocks);
3336         return put_user(blocks, (u64 __user *)arg);
3337 }
3338
3339 static int release_compress_blocks(struct dnode_of_data *dn, pgoff_t count)
3340 {
3341         struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
3342         unsigned int released_blocks = 0;
3343         int cluster_size = F2FS_I(dn->inode)->i_cluster_size;
3344         block_t blkaddr;
3345         int i;
3346
3347         for (i = 0; i < count; i++) {
3348                 blkaddr = data_blkaddr(dn->inode, dn->node_page,
3349                                                 dn->ofs_in_node + i);
3350
3351                 if (!__is_valid_data_blkaddr(blkaddr))
3352                         continue;
3353                 if (unlikely(!f2fs_is_valid_blkaddr(sbi, blkaddr,
3354                                         DATA_GENERIC_ENHANCE)))
3355                         return -EFSCORRUPTED;
3356         }
3357
3358         while (count) {
3359                 int compr_blocks = 0;
3360
3361                 for (i = 0; i < cluster_size; i++, dn->ofs_in_node++) {
3362                         blkaddr = f2fs_data_blkaddr(dn);
3363
3364                         if (i == 0) {
3365                                 if (blkaddr == COMPRESS_ADDR)
3366                                         continue;
3367                                 dn->ofs_in_node += cluster_size;
3368                                 goto next;
3369                         }
3370
3371                         if (__is_valid_data_blkaddr(blkaddr))
3372                                 compr_blocks++;
3373
3374                         if (blkaddr != NEW_ADDR)
3375                                 continue;
3376
3377                         dn->data_blkaddr = NULL_ADDR;
3378                         f2fs_set_data_blkaddr(dn);
3379                 }
3380
3381                 f2fs_i_compr_blocks_update(dn->inode, compr_blocks, false);
3382                 dec_valid_block_count(sbi, dn->inode,
3383                                         cluster_size - compr_blocks);
3384
3385                 released_blocks += cluster_size - compr_blocks;
3386 next:
3387                 count -= cluster_size;
3388         }
3389
3390         return released_blocks;
3391 }
3392
3393 static int f2fs_release_compress_blocks(struct file *filp, unsigned long arg)
3394 {
3395         struct inode *inode = file_inode(filp);
3396         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3397         pgoff_t page_idx = 0, last_idx;
3398         unsigned int released_blocks = 0;
3399         int ret;
3400         int writecount;
3401
3402         if (!f2fs_sb_has_compression(F2FS_I_SB(inode)))
3403                 return -EOPNOTSUPP;
3404
3405         if (!f2fs_compressed_file(inode))
3406                 return -EINVAL;
3407
3408         if (f2fs_readonly(sbi->sb))
3409                 return -EROFS;
3410
3411         ret = mnt_want_write_file(filp);
3412         if (ret)
3413                 return ret;
3414
3415         f2fs_balance_fs(F2FS_I_SB(inode), true);
3416
3417         inode_lock(inode);
3418
3419         writecount = atomic_read(&inode->i_writecount);
3420         if ((filp->f_mode & FMODE_WRITE && writecount != 1) ||
3421                         (!(filp->f_mode & FMODE_WRITE) && writecount)) {
3422                 ret = -EBUSY;
3423                 goto out;
3424         }
3425
3426         if (is_inode_flag_set(inode, FI_COMPRESS_RELEASED)) {
3427                 ret = -EINVAL;
3428                 goto out;
3429         }
3430
3431         ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
3432         if (ret)
3433                 goto out;
3434
3435         set_inode_flag(inode, FI_COMPRESS_RELEASED);
3436         inode->i_ctime = current_time(inode);
3437         f2fs_mark_inode_dirty_sync(inode, true);
3438
3439         if (!atomic_read(&F2FS_I(inode)->i_compr_blocks))
3440                 goto out;
3441
3442         down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
3443         down_write(&F2FS_I(inode)->i_mmap_sem);
3444
3445         last_idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
3446
3447         while (page_idx < last_idx) {
3448                 struct dnode_of_data dn;
3449                 pgoff_t end_offset, count;
3450
3451                 set_new_dnode(&dn, inode, NULL, NULL, 0);
3452                 ret = f2fs_get_dnode_of_data(&dn, page_idx, LOOKUP_NODE);
3453                 if (ret) {
3454                         if (ret == -ENOENT) {
3455                                 page_idx = f2fs_get_next_page_offset(&dn,
3456                                                                 page_idx);
3457                                 ret = 0;
3458                                 continue;
3459                         }
3460                         break;
3461                 }
3462
3463                 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
3464                 count = min(end_offset - dn.ofs_in_node, last_idx - page_idx);
3465                 count = round_up(count, F2FS_I(inode)->i_cluster_size);
3466
3467                 ret = release_compress_blocks(&dn, count);
3468
3469                 f2fs_put_dnode(&dn);
3470
3471                 if (ret < 0)
3472                         break;
3473
3474                 page_idx += count;
3475                 released_blocks += ret;
3476         }
3477
3478         up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
3479         up_write(&F2FS_I(inode)->i_mmap_sem);
3480 out:
3481         inode_unlock(inode);
3482
3483         mnt_drop_write_file(filp);
3484
3485         if (ret >= 0) {
3486                 ret = put_user(released_blocks, (u64 __user *)arg);
3487         } else if (released_blocks &&
3488                         atomic_read(&F2FS_I(inode)->i_compr_blocks)) {
3489                 set_sbi_flag(sbi, SBI_NEED_FSCK);
3490                 f2fs_warn(sbi, "%s: partial blocks were released i_ino=%lx "
3491                         "iblocks=%llu, released=%u, compr_blocks=%u, "
3492                         "run fsck to fix.",
3493                         __func__, inode->i_ino, inode->i_blocks,
3494                         released_blocks,
3495                         atomic_read(&F2FS_I(inode)->i_compr_blocks));
3496         }
3497
3498         return ret;
3499 }
3500
3501 static int reserve_compress_blocks(struct dnode_of_data *dn, pgoff_t count)
3502 {
3503         struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
3504         unsigned int reserved_blocks = 0;
3505         int cluster_size = F2FS_I(dn->inode)->i_cluster_size;
3506         block_t blkaddr;
3507         int i;
3508
3509         for (i = 0; i < count; i++) {
3510                 blkaddr = data_blkaddr(dn->inode, dn->node_page,
3511                                                 dn->ofs_in_node + i);
3512
3513                 if (!__is_valid_data_blkaddr(blkaddr))
3514                         continue;
3515                 if (unlikely(!f2fs_is_valid_blkaddr(sbi, blkaddr,
3516                                         DATA_GENERIC_ENHANCE)))
3517                         return -EFSCORRUPTED;
3518         }
3519
3520         while (count) {
3521                 int compr_blocks = 0;
3522                 blkcnt_t reserved;
3523                 int ret;
3524
3525                 for (i = 0; i < cluster_size; i++, dn->ofs_in_node++) {
3526                         blkaddr = f2fs_data_blkaddr(dn);
3527
3528                         if (i == 0) {
3529                                 if (blkaddr == COMPRESS_ADDR)
3530                                         continue;
3531                                 dn->ofs_in_node += cluster_size;
3532                                 goto next;
3533                         }
3534
3535                         if (__is_valid_data_blkaddr(blkaddr)) {
3536                                 compr_blocks++;
3537                                 continue;
3538                         }
3539
3540                         dn->data_blkaddr = NEW_ADDR;
3541                         f2fs_set_data_blkaddr(dn);
3542                 }
3543
3544                 reserved = cluster_size - compr_blocks;
3545                 ret = inc_valid_block_count(sbi, dn->inode, &reserved);
3546                 if (ret)
3547                         return ret;
3548
3549                 if (reserved != cluster_size - compr_blocks)
3550                         return -ENOSPC;
3551
3552                 f2fs_i_compr_blocks_update(dn->inode, compr_blocks, true);
3553
3554                 reserved_blocks += reserved;
3555 next:
3556                 count -= cluster_size;
3557         }
3558
3559         return reserved_blocks;
3560 }
3561
3562 static int f2fs_reserve_compress_blocks(struct file *filp, unsigned long arg)
3563 {
3564         struct inode *inode = file_inode(filp);
3565         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3566         pgoff_t page_idx = 0, last_idx;
3567         unsigned int reserved_blocks = 0;
3568         int ret;
3569
3570         if (!f2fs_sb_has_compression(F2FS_I_SB(inode)))
3571                 return -EOPNOTSUPP;
3572
3573         if (!f2fs_compressed_file(inode))
3574                 return -EINVAL;
3575
3576         if (f2fs_readonly(sbi->sb))
3577                 return -EROFS;
3578
3579         ret = mnt_want_write_file(filp);
3580         if (ret)
3581                 return ret;
3582
3583         if (atomic_read(&F2FS_I(inode)->i_compr_blocks))
3584                 goto out;
3585
3586         f2fs_balance_fs(F2FS_I_SB(inode), true);
3587
3588         inode_lock(inode);
3589
3590         if (!is_inode_flag_set(inode, FI_COMPRESS_RELEASED)) {
3591                 ret = -EINVAL;
3592                 goto unlock_inode;
3593         }
3594
3595         down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
3596         down_write(&F2FS_I(inode)->i_mmap_sem);
3597
3598         last_idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
3599
3600         while (page_idx < last_idx) {
3601                 struct dnode_of_data dn;
3602                 pgoff_t end_offset, count;
3603
3604                 set_new_dnode(&dn, inode, NULL, NULL, 0);
3605                 ret = f2fs_get_dnode_of_data(&dn, page_idx, LOOKUP_NODE);
3606                 if (ret) {
3607                         if (ret == -ENOENT) {
3608                                 page_idx = f2fs_get_next_page_offset(&dn,
3609                                                                 page_idx);
3610                                 ret = 0;
3611                                 continue;
3612                         }
3613                         break;
3614                 }
3615
3616                 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
3617                 count = min(end_offset - dn.ofs_in_node, last_idx - page_idx);
3618                 count = round_up(count, F2FS_I(inode)->i_cluster_size);
3619
3620                 ret = reserve_compress_blocks(&dn, count);
3621
3622                 f2fs_put_dnode(&dn);
3623
3624                 if (ret < 0)
3625                         break;
3626
3627                 page_idx += count;
3628                 reserved_blocks += ret;
3629         }
3630
3631         up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
3632         up_write(&F2FS_I(inode)->i_mmap_sem);
3633
3634         if (ret >= 0) {
3635                 clear_inode_flag(inode, FI_COMPRESS_RELEASED);
3636                 inode->i_ctime = current_time(inode);
3637                 f2fs_mark_inode_dirty_sync(inode, true);
3638         }
3639 unlock_inode:
3640         inode_unlock(inode);
3641 out:
3642         mnt_drop_write_file(filp);
3643
3644         if (ret >= 0) {
3645                 ret = put_user(reserved_blocks, (u64 __user *)arg);
3646         } else if (reserved_blocks &&
3647                         atomic_read(&F2FS_I(inode)->i_compr_blocks)) {
3648                 set_sbi_flag(sbi, SBI_NEED_FSCK);
3649                 f2fs_warn(sbi, "%s: partial blocks were released i_ino=%lx "
3650                         "iblocks=%llu, reserved=%u, compr_blocks=%u, "
3651                         "run fsck to fix.",
3652                         __func__, inode->i_ino, inode->i_blocks,
3653                         reserved_blocks,
3654                         atomic_read(&F2FS_I(inode)->i_compr_blocks));
3655         }
3656
3657         return ret;
3658 }
3659
3660 static int f2fs_secure_erase(struct block_device *bdev, struct inode *inode,
3661                 pgoff_t off, block_t block, block_t len, u32 flags)
3662 {
3663         struct request_queue *q = bdev_get_queue(bdev);
3664         sector_t sector = SECTOR_FROM_BLOCK(block);
3665         sector_t nr_sects = SECTOR_FROM_BLOCK(len);
3666         int ret = 0;
3667
3668         if (!q)
3669                 return -ENXIO;
3670
3671         if (flags & F2FS_TRIM_FILE_DISCARD)
3672                 ret = blkdev_issue_discard(bdev, sector, nr_sects, GFP_NOFS,
3673                                                 blk_queue_secure_erase(q) ?
3674                                                 BLKDEV_DISCARD_SECURE : 0);
3675
3676         if (!ret && (flags & F2FS_TRIM_FILE_ZEROOUT)) {
3677                 if (IS_ENCRYPTED(inode))
3678                         ret = fscrypt_zeroout_range(inode, off, block, len);
3679                 else
3680                         ret = blkdev_issue_zeroout(bdev, sector, nr_sects,
3681                                         GFP_NOFS, 0);
3682         }
3683
3684         return ret;
3685 }
3686
3687 static int f2fs_sec_trim_file(struct file *filp, unsigned long arg)
3688 {
3689         struct inode *inode = file_inode(filp);
3690         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3691         struct address_space *mapping = inode->i_mapping;
3692         struct block_device *prev_bdev = NULL;
3693         struct f2fs_sectrim_range range;
3694         pgoff_t index, pg_end, prev_index = 0;
3695         block_t prev_block = 0, len = 0;
3696         loff_t end_addr;
3697         bool to_end = false;
3698         int ret = 0;
3699
3700         if (!(filp->f_mode & FMODE_WRITE))
3701                 return -EBADF;
3702
3703         if (copy_from_user(&range, (struct f2fs_sectrim_range __user *)arg,
3704                                 sizeof(range)))
3705                 return -EFAULT;
3706
3707         if (range.flags == 0 || (range.flags & ~F2FS_TRIM_FILE_MASK) ||
3708                         !S_ISREG(inode->i_mode))
3709                 return -EINVAL;
3710
3711         if (((range.flags & F2FS_TRIM_FILE_DISCARD) &&
3712                         !f2fs_hw_support_discard(sbi)) ||
3713                         ((range.flags & F2FS_TRIM_FILE_ZEROOUT) &&
3714                          IS_ENCRYPTED(inode) && f2fs_is_multi_device(sbi)))
3715                 return -EOPNOTSUPP;
3716
3717         file_start_write(filp);
3718         inode_lock(inode);
3719
3720         if (f2fs_is_atomic_file(inode) || f2fs_compressed_file(inode) ||
3721                         range.start >= inode->i_size) {
3722                 ret = -EINVAL;
3723                 goto err;
3724         }
3725
3726         if (range.len == 0)
3727                 goto err;
3728
3729         if (inode->i_size - range.start > range.len) {
3730                 end_addr = range.start + range.len;
3731         } else {
3732                 end_addr = range.len == (u64)-1 ?
3733                         sbi->sb->s_maxbytes : inode->i_size;
3734                 to_end = true;
3735         }
3736
3737         if (!IS_ALIGNED(range.start, F2FS_BLKSIZE) ||
3738                         (!to_end && !IS_ALIGNED(end_addr, F2FS_BLKSIZE))) {
3739                 ret = -EINVAL;
3740                 goto err;
3741         }
3742
3743         index = F2FS_BYTES_TO_BLK(range.start);
3744         pg_end = DIV_ROUND_UP(end_addr, F2FS_BLKSIZE);
3745
3746         ret = f2fs_convert_inline_inode(inode);
3747         if (ret)
3748                 goto err;
3749
3750         down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
3751         down_write(&F2FS_I(inode)->i_mmap_sem);
3752
3753         ret = filemap_write_and_wait_range(mapping, range.start,
3754                         to_end ? LLONG_MAX : end_addr - 1);
3755         if (ret)
3756                 goto out;
3757
3758         truncate_inode_pages_range(mapping, range.start,
3759                         to_end ? -1 : end_addr - 1);
3760
3761         while (index < pg_end) {
3762                 struct dnode_of_data dn;
3763                 pgoff_t end_offset, count;
3764                 int i;
3765
3766                 set_new_dnode(&dn, inode, NULL, NULL, 0);
3767                 ret = f2fs_get_dnode_of_data(&dn, index, LOOKUP_NODE);
3768                 if (ret) {
3769                         if (ret == -ENOENT) {
3770                                 index = f2fs_get_next_page_offset(&dn, index);
3771                                 continue;
3772                         }
3773                         goto out;
3774                 }
3775
3776                 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
3777                 count = min(end_offset - dn.ofs_in_node, pg_end - index);
3778                 for (i = 0; i < count; i++, index++, dn.ofs_in_node++) {
3779                         struct block_device *cur_bdev;
3780                         block_t blkaddr = f2fs_data_blkaddr(&dn);
3781
3782                         if (!__is_valid_data_blkaddr(blkaddr))
3783                                 continue;
3784
3785                         if (!f2fs_is_valid_blkaddr(sbi, blkaddr,
3786                                                 DATA_GENERIC_ENHANCE)) {
3787                                 ret = -EFSCORRUPTED;
3788                                 f2fs_put_dnode(&dn);
3789                                 goto out;
3790                         }
3791
3792                         cur_bdev = f2fs_target_device(sbi, blkaddr, NULL);
3793                         if (f2fs_is_multi_device(sbi)) {
3794                                 int di = f2fs_target_device_index(sbi, blkaddr);
3795
3796                                 blkaddr -= FDEV(di).start_blk;
3797                         }
3798
3799                         if (len) {
3800                                 if (prev_bdev == cur_bdev &&
3801                                                 index == prev_index + len &&
3802                                                 blkaddr == prev_block + len) {
3803                                         len++;
3804                                 } else {
3805                                         ret = f2fs_secure_erase(prev_bdev,
3806                                                 inode, prev_index, prev_block,
3807                                                 len, range.flags);
3808                                         if (ret) {
3809                                                 f2fs_put_dnode(&dn);
3810                                                 goto out;
3811                                         }
3812
3813                                         len = 0;
3814                                 }
3815                         }
3816
3817                         if (!len) {
3818                                 prev_bdev = cur_bdev;
3819                                 prev_index = index;
3820                                 prev_block = blkaddr;
3821                                 len = 1;
3822                         }
3823                 }
3824
3825                 f2fs_put_dnode(&dn);
3826
3827                 if (fatal_signal_pending(current)) {
3828                         ret = -EINTR;
3829                         goto out;
3830                 }
3831                 cond_resched();
3832         }
3833
3834         if (len)
3835                 ret = f2fs_secure_erase(prev_bdev, inode, prev_index,
3836                                 prev_block, len, range.flags);
3837 out:
3838         up_write(&F2FS_I(inode)->i_mmap_sem);
3839         up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
3840 err:
3841         inode_unlock(inode);
3842         file_end_write(filp);
3843
3844         return ret;
3845 }
3846
3847 static int f2fs_ioc_get_compress_option(struct file *filp, unsigned long arg)
3848 {
3849         struct inode *inode = file_inode(filp);
3850         struct f2fs_comp_option option;
3851
3852         if (!f2fs_sb_has_compression(F2FS_I_SB(inode)))
3853                 return -EOPNOTSUPP;
3854
3855         inode_lock_shared(inode);
3856
3857         if (!f2fs_compressed_file(inode)) {
3858                 inode_unlock_shared(inode);
3859                 return -ENODATA;
3860         }
3861
3862         option.algorithm = F2FS_I(inode)->i_compress_algorithm;
3863         option.log_cluster_size = F2FS_I(inode)->i_log_cluster_size;
3864
3865         inode_unlock_shared(inode);
3866
3867         if (copy_to_user((struct f2fs_comp_option __user *)arg, &option,
3868                                 sizeof(option)))
3869                 return -EFAULT;
3870
3871         return 0;
3872 }
3873
3874 static int f2fs_ioc_set_compress_option(struct file *filp, unsigned long arg)
3875 {
3876         struct inode *inode = file_inode(filp);
3877         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3878         struct f2fs_comp_option option;
3879         int ret = 0;
3880
3881         if (!f2fs_sb_has_compression(sbi))
3882                 return -EOPNOTSUPP;
3883
3884         if (!(filp->f_mode & FMODE_WRITE))
3885                 return -EBADF;
3886
3887         if (copy_from_user(&option, (struct f2fs_comp_option __user *)arg,
3888                                 sizeof(option)))
3889                 return -EFAULT;
3890
3891         if (!f2fs_compressed_file(inode) ||
3892                         option.log_cluster_size < MIN_COMPRESS_LOG_SIZE ||
3893                         option.log_cluster_size > MAX_COMPRESS_LOG_SIZE ||
3894                         option.algorithm >= COMPRESS_MAX)
3895                 return -EINVAL;
3896
3897         file_start_write(filp);
3898         inode_lock(inode);
3899
3900         if (f2fs_is_mmap_file(inode) || get_dirty_pages(inode)) {
3901                 ret = -EBUSY;
3902                 goto out;
3903         }
3904
3905         if (inode->i_size != 0) {
3906                 ret = -EFBIG;
3907                 goto out;
3908         }
3909
3910         F2FS_I(inode)->i_compress_algorithm = option.algorithm;
3911         F2FS_I(inode)->i_log_cluster_size = option.log_cluster_size;
3912         F2FS_I(inode)->i_cluster_size = 1 << option.log_cluster_size;
3913         f2fs_mark_inode_dirty_sync(inode, true);
3914
3915         if (!f2fs_is_compress_backend_ready(inode))
3916                 f2fs_warn(sbi, "compression algorithm is successfully set, "
3917                         "but current kernel doesn't support this algorithm.");
3918 out:
3919         inode_unlock(inode);
3920         file_end_write(filp);
3921
3922         return ret;
3923 }
3924
3925 static int redirty_blocks(struct inode *inode, pgoff_t page_idx, int len)
3926 {
3927         DEFINE_READAHEAD(ractl, NULL, NULL, inode->i_mapping, page_idx);
3928         struct address_space *mapping = inode->i_mapping;
3929         struct page *page;
3930         pgoff_t redirty_idx = page_idx;
3931         int i, page_len = 0, ret = 0;
3932
3933         page_cache_ra_unbounded(&ractl, len, 0);
3934
3935         for (i = 0; i < len; i++, page_idx++) {
3936                 page = read_cache_page(mapping, page_idx, NULL, NULL);
3937                 if (IS_ERR(page)) {
3938                         ret = PTR_ERR(page);
3939                         break;
3940                 }
3941                 page_len++;
3942         }
3943
3944         for (i = 0; i < page_len; i++, redirty_idx++) {
3945                 page = find_lock_page(mapping, redirty_idx);
3946                 if (!page) {
3947                         ret = -ENOMEM;
3948                         break;
3949                 }
3950                 set_page_dirty(page);
3951                 f2fs_put_page(page, 1);
3952                 f2fs_put_page(page, 0);
3953         }
3954
3955         return ret;
3956 }
3957
3958 static int f2fs_ioc_decompress_file(struct file *filp, unsigned long arg)
3959 {
3960         struct inode *inode = file_inode(filp);
3961         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3962         struct f2fs_inode_info *fi = F2FS_I(inode);
3963         pgoff_t page_idx = 0, last_idx;
3964         unsigned int blk_per_seg = sbi->blocks_per_seg;
3965         int cluster_size = F2FS_I(inode)->i_cluster_size;
3966         int count, ret;
3967
3968         if (!f2fs_sb_has_compression(sbi) ||
3969                         F2FS_OPTION(sbi).compress_mode != COMPR_MODE_USER)
3970                 return -EOPNOTSUPP;
3971
3972         if (!(filp->f_mode & FMODE_WRITE))
3973                 return -EBADF;
3974
3975         if (!f2fs_compressed_file(inode))
3976                 return -EINVAL;
3977
3978         f2fs_balance_fs(F2FS_I_SB(inode), true);
3979
3980         file_start_write(filp);
3981         inode_lock(inode);
3982
3983         if (!f2fs_is_compress_backend_ready(inode)) {
3984                 ret = -EOPNOTSUPP;
3985                 goto out;
3986         }
3987
3988         if (f2fs_is_mmap_file(inode)) {
3989                 ret = -EBUSY;
3990                 goto out;
3991         }
3992
3993         ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
3994         if (ret)
3995                 goto out;
3996
3997         if (!atomic_read(&fi->i_compr_blocks))
3998                 goto out;
3999
4000         last_idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
4001
4002         count = last_idx - page_idx;
4003         while (count) {
4004                 int len = min(cluster_size, count);
4005
4006                 ret = redirty_blocks(inode, page_idx, len);
4007                 if (ret < 0)
4008                         break;
4009
4010                 if (get_dirty_pages(inode) >= blk_per_seg)
4011                         filemap_fdatawrite(inode->i_mapping);
4012
4013                 count -= len;
4014                 page_idx += len;
4015         }
4016
4017         if (!ret)
4018                 ret = filemap_write_and_wait_range(inode->i_mapping, 0,
4019                                                         LLONG_MAX);
4020
4021         if (ret)
4022                 f2fs_warn(sbi, "%s: The file might be partially decompressed (errno=%d). Please delete the file.",
4023                           __func__, ret);
4024 out:
4025         inode_unlock(inode);
4026         file_end_write(filp);
4027
4028         return ret;
4029 }
4030
4031 static int f2fs_ioc_compress_file(struct file *filp, unsigned long arg)
4032 {
4033         struct inode *inode = file_inode(filp);
4034         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
4035         pgoff_t page_idx = 0, last_idx;
4036         unsigned int blk_per_seg = sbi->blocks_per_seg;
4037         int cluster_size = F2FS_I(inode)->i_cluster_size;
4038         int count, ret;
4039
4040         if (!f2fs_sb_has_compression(sbi) ||
4041                         F2FS_OPTION(sbi).compress_mode != COMPR_MODE_USER)
4042                 return -EOPNOTSUPP;
4043
4044         if (!(filp->f_mode & FMODE_WRITE))
4045                 return -EBADF;
4046
4047         if (!f2fs_compressed_file(inode))
4048                 return -EINVAL;
4049
4050         f2fs_balance_fs(F2FS_I_SB(inode), true);
4051
4052         file_start_write(filp);
4053         inode_lock(inode);
4054
4055         if (!f2fs_is_compress_backend_ready(inode)) {
4056                 ret = -EOPNOTSUPP;
4057                 goto out;
4058         }
4059
4060         if (f2fs_is_mmap_file(inode)) {
4061                 ret = -EBUSY;
4062                 goto out;
4063         }
4064
4065         ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
4066         if (ret)
4067                 goto out;
4068
4069         set_inode_flag(inode, FI_ENABLE_COMPRESS);
4070
4071         last_idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
4072
4073         count = last_idx - page_idx;
4074         while (count) {
4075                 int len = min(cluster_size, count);
4076
4077                 ret = redirty_blocks(inode, page_idx, len);
4078                 if (ret < 0)
4079                         break;
4080
4081                 if (get_dirty_pages(inode) >= blk_per_seg)
4082                         filemap_fdatawrite(inode->i_mapping);
4083
4084                 count -= len;
4085                 page_idx += len;
4086         }
4087
4088         if (!ret)
4089                 ret = filemap_write_and_wait_range(inode->i_mapping, 0,
4090                                                         LLONG_MAX);
4091
4092         clear_inode_flag(inode, FI_ENABLE_COMPRESS);
4093
4094         if (ret)
4095                 f2fs_warn(sbi, "%s: The file might be partially compressed (errno=%d). Please delete the file.",
4096                           __func__, ret);
4097 out:
4098         inode_unlock(inode);
4099         file_end_write(filp);
4100
4101         return ret;
4102 }
4103
4104 static long __f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
4105 {
4106         switch (cmd) {
4107         case FS_IOC_GETVERSION:
4108                 return f2fs_ioc_getversion(filp, arg);
4109         case F2FS_IOC_START_ATOMIC_WRITE:
4110                 return f2fs_ioc_start_atomic_write(filp);
4111         case F2FS_IOC_COMMIT_ATOMIC_WRITE:
4112                 return f2fs_ioc_commit_atomic_write(filp);
4113         case F2FS_IOC_START_VOLATILE_WRITE:
4114                 return f2fs_ioc_start_volatile_write(filp);
4115         case F2FS_IOC_RELEASE_VOLATILE_WRITE:
4116                 return f2fs_ioc_release_volatile_write(filp);
4117         case F2FS_IOC_ABORT_VOLATILE_WRITE:
4118                 return f2fs_ioc_abort_volatile_write(filp);
4119         case F2FS_IOC_SHUTDOWN:
4120                 return f2fs_ioc_shutdown(filp, arg);
4121         case FITRIM:
4122                 return f2fs_ioc_fitrim(filp, arg);
4123         case FS_IOC_SET_ENCRYPTION_POLICY:
4124                 return f2fs_ioc_set_encryption_policy(filp, arg);
4125         case FS_IOC_GET_ENCRYPTION_POLICY:
4126                 return f2fs_ioc_get_encryption_policy(filp, arg);
4127         case FS_IOC_GET_ENCRYPTION_PWSALT:
4128                 return f2fs_ioc_get_encryption_pwsalt(filp, arg);
4129         case FS_IOC_GET_ENCRYPTION_POLICY_EX:
4130                 return f2fs_ioc_get_encryption_policy_ex(filp, arg);
4131         case FS_IOC_ADD_ENCRYPTION_KEY:
4132                 return f2fs_ioc_add_encryption_key(filp, arg);
4133         case FS_IOC_REMOVE_ENCRYPTION_KEY:
4134                 return f2fs_ioc_remove_encryption_key(filp, arg);
4135         case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS:
4136                 return f2fs_ioc_remove_encryption_key_all_users(filp, arg);
4137         case FS_IOC_GET_ENCRYPTION_KEY_STATUS:
4138                 return f2fs_ioc_get_encryption_key_status(filp, arg);
4139         case FS_IOC_GET_ENCRYPTION_NONCE:
4140                 return f2fs_ioc_get_encryption_nonce(filp, arg);
4141         case F2FS_IOC_GARBAGE_COLLECT:
4142                 return f2fs_ioc_gc(filp, arg);
4143         case F2FS_IOC_GARBAGE_COLLECT_RANGE:
4144                 return f2fs_ioc_gc_range(filp, arg);
4145         case F2FS_IOC_WRITE_CHECKPOINT:
4146                 return f2fs_ioc_write_checkpoint(filp, arg);
4147         case F2FS_IOC_DEFRAGMENT:
4148                 return f2fs_ioc_defragment(filp, arg);
4149         case F2FS_IOC_MOVE_RANGE:
4150                 return f2fs_ioc_move_range(filp, arg);
4151         case F2FS_IOC_FLUSH_DEVICE:
4152                 return f2fs_ioc_flush_device(filp, arg);
4153         case F2FS_IOC_GET_FEATURES:
4154                 return f2fs_ioc_get_features(filp, arg);
4155         case F2FS_IOC_GET_PIN_FILE:
4156                 return f2fs_ioc_get_pin_file(filp, arg);
4157         case F2FS_IOC_SET_PIN_FILE:
4158                 return f2fs_ioc_set_pin_file(filp, arg);
4159         case F2FS_IOC_PRECACHE_EXTENTS:
4160                 return f2fs_ioc_precache_extents(filp, arg);
4161         case F2FS_IOC_RESIZE_FS:
4162                 return f2fs_ioc_resize_fs(filp, arg);
4163         case FS_IOC_ENABLE_VERITY:
4164                 return f2fs_ioc_enable_verity(filp, arg);
4165         case FS_IOC_MEASURE_VERITY:
4166                 return f2fs_ioc_measure_verity(filp, arg);
4167         case FS_IOC_READ_VERITY_METADATA:
4168                 return f2fs_ioc_read_verity_metadata(filp, arg);
4169         case FS_IOC_GETFSLABEL:
4170                 return f2fs_ioc_getfslabel(filp, arg);
4171         case FS_IOC_SETFSLABEL:
4172                 return f2fs_ioc_setfslabel(filp, arg);
4173         case F2FS_IOC_GET_COMPRESS_BLOCKS:
4174                 return f2fs_get_compress_blocks(filp, arg);
4175         case F2FS_IOC_RELEASE_COMPRESS_BLOCKS:
4176                 return f2fs_release_compress_blocks(filp, arg);
4177         case F2FS_IOC_RESERVE_COMPRESS_BLOCKS:
4178                 return f2fs_reserve_compress_blocks(filp, arg);
4179         case F2FS_IOC_SEC_TRIM_FILE:
4180                 return f2fs_sec_trim_file(filp, arg);
4181         case F2FS_IOC_GET_COMPRESS_OPTION:
4182                 return f2fs_ioc_get_compress_option(filp, arg);
4183         case F2FS_IOC_SET_COMPRESS_OPTION:
4184                 return f2fs_ioc_set_compress_option(filp, arg);
4185         case F2FS_IOC_DECOMPRESS_FILE:
4186                 return f2fs_ioc_decompress_file(filp, arg);
4187         case F2FS_IOC_COMPRESS_FILE:
4188                 return f2fs_ioc_compress_file(filp, arg);
4189         default:
4190                 return -ENOTTY;
4191         }
4192 }
4193
4194 long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
4195 {
4196         if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(filp)))))
4197                 return -EIO;
4198         if (!f2fs_is_checkpoint_ready(F2FS_I_SB(file_inode(filp))))
4199                 return -ENOSPC;
4200
4201         return __f2fs_ioctl(filp, cmd, arg);
4202 }
4203
4204 static ssize_t f2fs_file_read_iter(struct kiocb *iocb, struct iov_iter *iter)
4205 {
4206         struct file *file = iocb->ki_filp;
4207         struct inode *inode = file_inode(file);
4208         int ret;
4209
4210         if (!f2fs_is_compress_backend_ready(inode))
4211                 return -EOPNOTSUPP;
4212
4213         ret = generic_file_read_iter(iocb, iter);
4214
4215         if (ret > 0)
4216                 f2fs_update_iostat(F2FS_I_SB(inode), APP_READ_IO, ret);
4217
4218         return ret;
4219 }
4220
4221 static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
4222 {
4223         struct file *file = iocb->ki_filp;
4224         struct inode *inode = file_inode(file);
4225         ssize_t ret;
4226
4227         if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) {
4228                 ret = -EIO;
4229                 goto out;
4230         }
4231
4232         if (!f2fs_is_compress_backend_ready(inode)) {
4233                 ret = -EOPNOTSUPP;
4234                 goto out;
4235         }
4236
4237         if (iocb->ki_flags & IOCB_NOWAIT) {
4238                 if (!inode_trylock(inode)) {
4239                         ret = -EAGAIN;
4240                         goto out;
4241                 }
4242         } else {
4243                 inode_lock(inode);
4244         }
4245
4246         if (unlikely(IS_IMMUTABLE(inode))) {
4247                 ret = -EPERM;
4248                 goto unlock;
4249         }
4250
4251         if (is_inode_flag_set(inode, FI_COMPRESS_RELEASED)) {
4252                 ret = -EPERM;
4253                 goto unlock;
4254         }
4255
4256         ret = generic_write_checks(iocb, from);
4257         if (ret > 0) {
4258                 bool preallocated = false;
4259                 size_t target_size = 0;
4260                 int err;
4261
4262                 if (iov_iter_fault_in_readable(from, iov_iter_count(from)))
4263                         set_inode_flag(inode, FI_NO_PREALLOC);
4264
4265                 if ((iocb->ki_flags & IOCB_NOWAIT)) {
4266                         if (!f2fs_overwrite_io(inode, iocb->ki_pos,
4267                                                 iov_iter_count(from)) ||
4268                                 f2fs_has_inline_data(inode) ||
4269                                 f2fs_force_buffered_io(inode, iocb, from)) {
4270                                 clear_inode_flag(inode, FI_NO_PREALLOC);
4271                                 inode_unlock(inode);
4272                                 ret = -EAGAIN;
4273                                 goto out;
4274                         }
4275                         goto write;
4276                 }
4277
4278                 if (is_inode_flag_set(inode, FI_NO_PREALLOC))
4279                         goto write;
4280
4281                 if (iocb->ki_flags & IOCB_DIRECT) {
4282                         /*
4283                          * Convert inline data for Direct I/O before entering
4284                          * f2fs_direct_IO().
4285                          */
4286                         err = f2fs_convert_inline_inode(inode);
4287                         if (err)
4288                                 goto out_err;
4289                         /*
4290                          * If force_buffere_io() is true, we have to allocate
4291                          * blocks all the time, since f2fs_direct_IO will fall
4292                          * back to buffered IO.
4293                          */
4294                         if (!f2fs_force_buffered_io(inode, iocb, from) &&
4295                                         allow_outplace_dio(inode, iocb, from))
4296                                 goto write;
4297                 }
4298                 preallocated = true;
4299                 target_size = iocb->ki_pos + iov_iter_count(from);
4300
4301                 err = f2fs_preallocate_blocks(iocb, from);
4302                 if (err) {
4303 out_err:
4304                         clear_inode_flag(inode, FI_NO_PREALLOC);
4305                         inode_unlock(inode);
4306                         ret = err;
4307                         goto out;
4308                 }
4309 write:
4310                 ret = __generic_file_write_iter(iocb, from);
4311                 clear_inode_flag(inode, FI_NO_PREALLOC);
4312
4313                 /* if we couldn't write data, we should deallocate blocks. */
4314                 if (preallocated && i_size_read(inode) < target_size) {
4315                         down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
4316                         down_write(&F2FS_I(inode)->i_mmap_sem);
4317                         f2fs_truncate(inode);
4318                         up_write(&F2FS_I(inode)->i_mmap_sem);
4319                         up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
4320                 }
4321
4322                 if (ret > 0)
4323                         f2fs_update_iostat(F2FS_I_SB(inode), APP_WRITE_IO, ret);
4324         }
4325 unlock:
4326         inode_unlock(inode);
4327 out:
4328         trace_f2fs_file_write_iter(inode, iocb->ki_pos,
4329                                         iov_iter_count(from), ret);
4330         if (ret > 0)
4331                 ret = generic_write_sync(iocb, ret);
4332         return ret;
4333 }
4334
4335 #ifdef CONFIG_COMPAT
4336 struct compat_f2fs_gc_range {
4337         u32 sync;
4338         compat_u64 start;
4339         compat_u64 len;
4340 };
4341 #define F2FS_IOC32_GARBAGE_COLLECT_RANGE        _IOW(F2FS_IOCTL_MAGIC, 11,\
4342                                                 struct compat_f2fs_gc_range)
4343
4344 static int f2fs_compat_ioc_gc_range(struct file *file, unsigned long arg)
4345 {
4346         struct compat_f2fs_gc_range __user *urange;
4347         struct f2fs_gc_range range;
4348         int err;
4349
4350         urange = compat_ptr(arg);
4351         err = get_user(range.sync, &urange->sync);
4352         err |= get_user(range.start, &urange->start);
4353         err |= get_user(range.len, &urange->len);
4354         if (err)
4355                 return -EFAULT;
4356
4357         return __f2fs_ioc_gc_range(file, &range);
4358 }
4359
4360 struct compat_f2fs_move_range {
4361         u32 dst_fd;
4362         compat_u64 pos_in;
4363         compat_u64 pos_out;
4364         compat_u64 len;
4365 };
4366 #define F2FS_IOC32_MOVE_RANGE           _IOWR(F2FS_IOCTL_MAGIC, 9,      \
4367                                         struct compat_f2fs_move_range)
4368
4369 static int f2fs_compat_ioc_move_range(struct file *file, unsigned long arg)
4370 {
4371         struct compat_f2fs_move_range __user *urange;
4372         struct f2fs_move_range range;
4373         int err;
4374
4375         urange = compat_ptr(arg);
4376         err = get_user(range.dst_fd, &urange->dst_fd);
4377         err |= get_user(range.pos_in, &urange->pos_in);
4378         err |= get_user(range.pos_out, &urange->pos_out);
4379         err |= get_user(range.len, &urange->len);
4380         if (err)
4381                 return -EFAULT;
4382
4383         return __f2fs_ioc_move_range(file, &range);
4384 }
4385
4386 long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
4387 {
4388         if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(file)))))
4389                 return -EIO;
4390         if (!f2fs_is_checkpoint_ready(F2FS_I_SB(file_inode(file))))
4391                 return -ENOSPC;
4392
4393         switch (cmd) {
4394         case FS_IOC32_GETVERSION:
4395                 cmd = FS_IOC_GETVERSION;
4396                 break;
4397         case F2FS_IOC32_GARBAGE_COLLECT_RANGE:
4398                 return f2fs_compat_ioc_gc_range(file, arg);
4399         case F2FS_IOC32_MOVE_RANGE:
4400                 return f2fs_compat_ioc_move_range(file, arg);
4401         case F2FS_IOC_START_ATOMIC_WRITE:
4402         case F2FS_IOC_COMMIT_ATOMIC_WRITE:
4403         case F2FS_IOC_START_VOLATILE_WRITE:
4404         case F2FS_IOC_RELEASE_VOLATILE_WRITE:
4405         case F2FS_IOC_ABORT_VOLATILE_WRITE:
4406         case F2FS_IOC_SHUTDOWN:
4407         case FITRIM:
4408         case FS_IOC_SET_ENCRYPTION_POLICY:
4409         case FS_IOC_GET_ENCRYPTION_PWSALT:
4410         case FS_IOC_GET_ENCRYPTION_POLICY:
4411         case FS_IOC_GET_ENCRYPTION_POLICY_EX:
4412         case FS_IOC_ADD_ENCRYPTION_KEY:
4413         case FS_IOC_REMOVE_ENCRYPTION_KEY:
4414         case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS:
4415         case FS_IOC_GET_ENCRYPTION_KEY_STATUS:
4416         case FS_IOC_GET_ENCRYPTION_NONCE:
4417         case F2FS_IOC_GARBAGE_COLLECT:
4418         case F2FS_IOC_WRITE_CHECKPOINT:
4419         case F2FS_IOC_DEFRAGMENT:
4420         case F2FS_IOC_FLUSH_DEVICE:
4421         case F2FS_IOC_GET_FEATURES:
4422         case F2FS_IOC_GET_PIN_FILE:
4423         case F2FS_IOC_SET_PIN_FILE:
4424         case F2FS_IOC_PRECACHE_EXTENTS:
4425         case F2FS_IOC_RESIZE_FS:
4426         case FS_IOC_ENABLE_VERITY:
4427         case FS_IOC_MEASURE_VERITY:
4428         case FS_IOC_READ_VERITY_METADATA:
4429         case FS_IOC_GETFSLABEL:
4430         case FS_IOC_SETFSLABEL:
4431         case F2FS_IOC_GET_COMPRESS_BLOCKS:
4432         case F2FS_IOC_RELEASE_COMPRESS_BLOCKS:
4433         case F2FS_IOC_RESERVE_COMPRESS_BLOCKS:
4434         case F2FS_IOC_SEC_TRIM_FILE:
4435         case F2FS_IOC_GET_COMPRESS_OPTION:
4436         case F2FS_IOC_SET_COMPRESS_OPTION:
4437         case F2FS_IOC_DECOMPRESS_FILE:
4438         case F2FS_IOC_COMPRESS_FILE:
4439                 break;
4440         default:
4441                 return -ENOIOCTLCMD;
4442         }
4443         return __f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg));
4444 }
4445 #endif
4446
4447 const struct file_operations f2fs_file_operations = {
4448         .llseek         = f2fs_llseek,
4449         .read_iter      = f2fs_file_read_iter,
4450         .write_iter     = f2fs_file_write_iter,
4451         .open           = f2fs_file_open,
4452         .release        = f2fs_release_file,
4453         .mmap           = f2fs_file_mmap,
4454         .flush          = f2fs_file_flush,
4455         .fsync          = f2fs_sync_file,
4456         .fallocate      = f2fs_fallocate,
4457         .unlocked_ioctl = f2fs_ioctl,
4458 #ifdef CONFIG_COMPAT
4459         .compat_ioctl   = f2fs_compat_ioctl,
4460 #endif
4461         .splice_read    = generic_file_splice_read,
4462         .splice_write   = iter_file_splice_write,
4463 };