fs/f2fs/inode.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * fs/f2fs/inode.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/buffer_head.h>
  11 #include <linux/backing-dev.h>
  12 #include <linux/writeback.h>
  13
  14 #include "f2fs.h"
  15 #include "node.h"
  16 #include "segment.h"
  17 #include "xattr.h"
  18
  19 #include <trace/events/f2fs.h>
  20
  21 #ifdef CONFIG_F2FS_FS_COMPRESSION
  22 extern const struct address_space_operations f2fs_compress_aops;
  23 #endif
  24
  25 void f2fs_mark_inode_dirty_sync(struct inode *inode, bool sync)
  26 {
  27         if (is_inode_flag_set(inode, FI_NEW_INODE))
  28                 return;
  29
  30         if (f2fs_inode_dirtied(inode, sync))
  31                 return;
  32
  33         mark_inode_dirty_sync(inode);
  34 }
  35
  36 void f2fs_set_inode_flags(struct inode *inode)
  37 {
  38         unsigned int flags = F2FS_I(inode)->i_flags;
  39         unsigned int new_fl = 0;
  40
  41         if (flags & F2FS_SYNC_FL)
  42                 new_fl |= S_SYNC;
  43         if (flags & F2FS_APPEND_FL)
  44                 new_fl |= S_APPEND;
  45         if (flags & F2FS_IMMUTABLE_FL)
  46                 new_fl |= S_IMMUTABLE;
  47         if (flags & F2FS_NOATIME_FL)
  48                 new_fl |= S_NOATIME;
  49         if (flags & F2FS_DIRSYNC_FL)
  50                 new_fl |= S_DIRSYNC;
  51         if (file_is_encrypt(inode))
  52                 new_fl |= S_ENCRYPTED;
  53         if (file_is_verity(inode))
  54                 new_fl |= S_VERITY;
  55         if (flags & F2FS_CASEFOLD_FL)
  56                 new_fl |= S_CASEFOLD;
  57         inode_set_flags(inode, new_fl,
  58                         S_SYNC|S_APPEND|S_IMMUTABLE|S_NOATIME|S_DIRSYNC|
  59                         S_ENCRYPTED|S_VERITY|S_CASEFOLD);
  60 }
  61
  62 static void __get_inode_rdev(struct inode *inode, struct f2fs_inode *ri)
  63 {
  64         int extra_size = get_extra_isize(inode);
  65
  66         if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
  67                         S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
  68                 if (ri->i_addr[extra_size])
  69                         inode->i_rdev = old_decode_dev(
  70                                 le32_to_cpu(ri->i_addr[extra_size]));
  71                 else
  72                         inode->i_rdev = new_decode_dev(
  73                                 le32_to_cpu(ri->i_addr[extra_size + 1]));
  74         }
  75 }
  76
  77 static int __written_first_block(struct f2fs_sb_info *sbi,
  78                                         struct f2fs_inode *ri)
  79 {
  80         block_t addr = le32_to_cpu(ri->i_addr[offset_in_addr(ri)]);
  81
  82         if (!__is_valid_data_blkaddr(addr))
  83                 return 1;
  84         if (!f2fs_is_valid_blkaddr(sbi, addr, DATA_GENERIC_ENHANCE))
  85                 return -EFSCORRUPTED;
  86         return 0;
  87 }
  88
  89 static void __set_inode_rdev(struct inode *inode, struct f2fs_inode *ri)
  90 {
  91         int extra_size = get_extra_isize(inode);
  92
  93         if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {
  94                 if (old_valid_dev(inode->i_rdev)) {
  95                         ri->i_addr[extra_size] =
  96                                 cpu_to_le32(old_encode_dev(inode->i_rdev));
  97                         ri->i_addr[extra_size + 1] = 0;
  98                 } else {
  99                         ri->i_addr[extra_size] = 0;
 100                         ri->i_addr[extra_size + 1] =
 101                                 cpu_to_le32(new_encode_dev(inode->i_rdev));
 102                         ri->i_addr[extra_size + 2] = 0;
 103                 }
 104         }
 105 }
 106
 107 static void __recover_inline_status(struct inode *inode, struct page *ipage)
 108 {
 109         void *inline_data = inline_data_addr(inode, ipage);
 110         __le32 *start = inline_data;
 111         __le32 *end = start + MAX_INLINE_DATA(inode) / sizeof(__le32);
 112
 113         while (start < end) {
 114                 if (*start++) {
 115                         f2fs_wait_on_page_writeback(ipage, NODE, true, true);
 116
 117                         set_inode_flag(inode, FI_DATA_EXIST);
 118                         set_raw_inline(inode, F2FS_INODE(ipage));
 119                         set_page_dirty(ipage);
 120                         return;
 121                 }
 122         }
 123         return;
 124 }
 125
 126 static bool f2fs_enable_inode_chksum(struct f2fs_sb_info *sbi, struct page *page)
 127 {
 128         struct f2fs_inode *ri = &F2FS_NODE(page)->i;
 129
 130         if (!f2fs_sb_has_inode_chksum(sbi))
 131                 return false;
 132
 133         if (!IS_INODE(page) || !(ri->i_inline & F2FS_EXTRA_ATTR))
 134                 return false;
 135
 136         if (!F2FS_FITS_IN_INODE(ri, le16_to_cpu(ri->i_extra_isize),
 137                                 i_inode_checksum))
 138                 return false;
 139
 140         return true;
 141 }
 142
 143 static __u32 f2fs_inode_chksum(struct f2fs_sb_info *sbi, struct page *page)
 144 {
 145         struct f2fs_node *node = F2FS_NODE(page);
 146         struct f2fs_inode *ri = &node->i;
 147         __le32 ino = node->footer.ino;
 148         __le32 gen = ri->i_generation;
 149         __u32 chksum, chksum_seed;
 150         __u32 dummy_cs = 0;
 151         unsigned int offset = offsetof(struct f2fs_inode, i_inode_checksum);
 152         unsigned int cs_size = sizeof(dummy_cs);
 153
 154         chksum = f2fs_chksum(sbi, sbi->s_chksum_seed, (__u8 *)&ino,
 155                                                         sizeof(ino));
 156         chksum_seed = f2fs_chksum(sbi, chksum, (__u8 *)&gen, sizeof(gen));
 157
 158         chksum = f2fs_chksum(sbi, chksum_seed, (__u8 *)ri, offset);
 159         chksum = f2fs_chksum(sbi, chksum, (__u8 *)&dummy_cs, cs_size);
 160         offset += cs_size;
 161         chksum = f2fs_chksum(sbi, chksum, (__u8 *)ri + offset,
 162                                                 F2FS_BLKSIZE - offset);
 163         return chksum;
 164 }
 165
 166 bool f2fs_inode_chksum_verify(struct f2fs_sb_info *sbi, struct page *page)
 167 {
 168         struct f2fs_inode *ri;
 169         __u32 provided, calculated;
 170
 171         if (unlikely(is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN)))
 172                 return true;
 173
 174 #ifdef CONFIG_F2FS_CHECK_FS
 175         if (!f2fs_enable_inode_chksum(sbi, page))
 176 #else
 177         if (!f2fs_enable_inode_chksum(sbi, page) ||
 178                         PageDirty(page) || PageWriteback(page))
 179 #endif
 180                 return true;
 181
 182         ri = &F2FS_NODE(page)->i;
 183         provided = le32_to_cpu(ri->i_inode_checksum);
 184         calculated = f2fs_inode_chksum(sbi, page);
 185
 186         if (provided != calculated)
 187                 f2fs_warn(sbi, "checksum invalid, nid = %lu, ino_of_node = %x, %x vs. %x",
 188                           page->index, ino_of_node(page), provided, calculated);
 189
 190         return provided == calculated;
 191 }
 192
 193 void f2fs_inode_chksum_set(struct f2fs_sb_info *sbi, struct page *page)
 194 {
 195         struct f2fs_inode *ri = &F2FS_NODE(page)->i;
 196
 197         if (!f2fs_enable_inode_chksum(sbi, page))
 198                 return;
 199
 200         ri->i_inode_checksum = cpu_to_le32(f2fs_inode_chksum(sbi, page));
 201 }
 202
 203 static bool sanity_check_inode(struct inode *inode, struct page *node_page)
 204 {
 205         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 206         struct f2fs_inode_info *fi = F2FS_I(inode);
 207         struct f2fs_inode *ri = F2FS_INODE(node_page);
 208         unsigned long long iblocks;
 209
 210         iblocks = le64_to_cpu(F2FS_INODE(node_page)->i_blocks);
 211         if (!iblocks) {
 212                 set_sbi_flag(sbi, SBI_NEED_FSCK);
 213                 f2fs_warn(sbi, "%s: corrupted inode i_blocks i_ino=%lx iblocks=%llu, run fsck to fix.",
 214                           __func__, inode->i_ino, iblocks);
 215                 return false;
 216         }
 217
 218         if (ino_of_node(node_page) != nid_of_node(node_page)) {
 219                 set_sbi_flag(sbi, SBI_NEED_FSCK);
 220                 f2fs_warn(sbi, "%s: corrupted inode footer i_ino=%lx, ino,nid: [%u, %u] run fsck to fix.",
 221                           __func__, inode->i_ino,
 222                           ino_of_node(node_page), nid_of_node(node_page));
 223                 return false;
 224         }
 225
 226         if (f2fs_sb_has_flexible_inline_xattr(sbi)
 227                         && !f2fs_has_extra_attr(inode)) {
 228                 set_sbi_flag(sbi, SBI_NEED_FSCK);
 229                 f2fs_warn(sbi, "%s: corrupted inode ino=%lx, run fsck to fix.",
 230                           __func__, inode->i_ino);
 231                 return false;
 232         }
 233
 234         if (f2fs_has_extra_attr(inode) &&
 235                         !f2fs_sb_has_extra_attr(sbi)) {
 236                 set_sbi_flag(sbi, SBI_NEED_FSCK);
 237                 f2fs_warn(sbi, "%s: inode (ino=%lx) is with extra_attr, but extra_attr feature is off",
 238                           __func__, inode->i_ino);
 239                 return false;
 240         }
 241
 242         if (fi->i_extra_isize > F2FS_TOTAL_EXTRA_ATTR_SIZE ||
 243                         fi->i_extra_isize % sizeof(__le32)) {
 244                 set_sbi_flag(sbi, SBI_NEED_FSCK);
 245                 f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_extra_isize: %d, max: %zu",
 246                           __func__, inode->i_ino, fi->i_extra_isize,
 247                           F2FS_TOTAL_EXTRA_ATTR_SIZE);
 248                 return false;
 249         }
 250
 251         if (f2fs_has_extra_attr(inode) &&
 252                 f2fs_sb_has_flexible_inline_xattr(sbi) &&
 253                 f2fs_has_inline_xattr(inode) &&
 254                 (!fi->i_inline_xattr_size ||
 255                 fi->i_inline_xattr_size > MAX_INLINE_XATTR_SIZE)) {
 256                 set_sbi_flag(sbi, SBI_NEED_FSCK);
 257                 f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_inline_xattr_size: %d, max: %zu",
 258                           __func__, inode->i_ino, fi->i_inline_xattr_size,
 259                           MAX_INLINE_XATTR_SIZE);
 260                 return false;
 261         }
 262
 263         if (F2FS_I(inode)->extent_tree) {
 264                 struct extent_info *ei = &F2FS_I(inode)->extent_tree->largest;
 265
 266                 if (ei->len &&
 267                         (!f2fs_is_valid_blkaddr(sbi, ei->blk,
 268                                                 DATA_GENERIC_ENHANCE) ||
 269                         !f2fs_is_valid_blkaddr(sbi, ei->blk + ei->len - 1,
 270                                                 DATA_GENERIC_ENHANCE))) {
 271                         set_sbi_flag(sbi, SBI_NEED_FSCK);
 272                         f2fs_warn(sbi, "%s: inode (ino=%lx) extent info [%u, %u, %u] is incorrect, run fsck to fix",
 273                                   __func__, inode->i_ino,
 274                                   ei->blk, ei->fofs, ei->len);
 275                         return false;
 276                 }
 277         }
 278
 279         if (f2fs_has_inline_data(inode) &&
 280                         (!S_ISREG(inode->i_mode) && !S_ISLNK(inode->i_mode))) {
 281                 set_sbi_flag(sbi, SBI_NEED_FSCK);
 282                 f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_data, run fsck to fix",
 283                           __func__, inode->i_ino, inode->i_mode);
 284                 return false;
 285         }
 286
 287         if (f2fs_has_inline_dentry(inode) && !S_ISDIR(inode->i_mode)) {
 288                 set_sbi_flag(sbi, SBI_NEED_FSCK);
 289                 f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_dentry, run fsck to fix",
 290                           __func__, inode->i_ino, inode->i_mode);
 291                 return false;
 292         }
 293
 294         if ((fi->i_flags & F2FS_CASEFOLD_FL) && !f2fs_sb_has_casefold(sbi)) {
 295                 set_sbi_flag(sbi, SBI_NEED_FSCK);
 296                 f2fs_warn(sbi, "%s: inode (ino=%lx) has casefold flag, but casefold feature is off",
 297                           __func__, inode->i_ino);
 298                 return false;
 299         }
 300
 301         if (f2fs_has_extra_attr(inode) && f2fs_sb_has_compression(sbi) &&
 302                         fi->i_flags & F2FS_COMPR_FL &&
 303                         F2FS_FITS_IN_INODE(ri, fi->i_extra_isize,
 304                                                 i_log_cluster_size)) {
 305                 if (ri->i_compress_algorithm >= COMPRESS_MAX) {
 306                         set_sbi_flag(sbi, SBI_NEED_FSCK);
 307                         f2fs_warn(sbi, "%s: inode (ino=%lx) has unsupported "
 308                                 "compress algorithm: %u, run fsck to fix",
 309                                   __func__, inode->i_ino,
 310                                   ri->i_compress_algorithm);
 311                         return false;
 312                 }
 313                 if (le64_to_cpu(ri->i_compr_blocks) >
 314                                 SECTOR_TO_BLOCK(inode->i_blocks)) {
 315                         set_sbi_flag(sbi, SBI_NEED_FSCK);
 316                         f2fs_warn(sbi, "%s: inode (ino=%lx) has inconsistent "
 317                                 "i_compr_blocks:%llu, i_blocks:%llu, run fsck to fix",
 318                                   __func__, inode->i_ino,
 319                                   le64_to_cpu(ri->i_compr_blocks),
 320                                   SECTOR_TO_BLOCK(inode->i_blocks));
 321                         return false;
 322                 }
 323                 if (ri->i_log_cluster_size < MIN_COMPRESS_LOG_SIZE ||
 324                         ri->i_log_cluster_size > MAX_COMPRESS_LOG_SIZE) {
 325                         set_sbi_flag(sbi, SBI_NEED_FSCK);
 326                         f2fs_warn(sbi, "%s: inode (ino=%lx) has unsupported "
 327                                 "log cluster size: %u, run fsck to fix",
 328                                   __func__, inode->i_ino,
 329                                   ri->i_log_cluster_size);
 330                         return false;
 331                 }
 332         }
 333
 334         return true;
 335 }
 336
 337 static int do_read_inode(struct inode *inode)
 338 {
 339         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 340         struct f2fs_inode_info *fi = F2FS_I(inode);
 341         struct page *node_page;
 342         struct f2fs_inode *ri;
 343         projid_t i_projid;
 344         int err;
 345
 346         /* Check if ino is within scope */
 347         if (f2fs_check_nid_range(sbi, inode->i_ino))
 348                 return -EINVAL;
 349
 350         node_page = f2fs_get_node_page(sbi, inode->i_ino);
 351         if (IS_ERR(node_page))
 352                 return PTR_ERR(node_page);
 353
 354         ri = F2FS_INODE(node_page);
 355
 356         inode->i_mode = le16_to_cpu(ri->i_mode);
 357         i_uid_write(inode, le32_to_cpu(ri->i_uid));
 358         i_gid_write(inode, le32_to_cpu(ri->i_gid));
 359         set_nlink(inode, le32_to_cpu(ri->i_links));
 360         inode->i_size = le64_to_cpu(ri->i_size);
 361         inode->i_blocks = SECTOR_FROM_BLOCK(le64_to_cpu(ri->i_blocks) - 1);
 362
 363         inode->i_atime.tv_sec = le64_to_cpu(ri->i_atime);
 364         inode->i_ctime.tv_sec = le64_to_cpu(ri->i_ctime);
 365         inode->i_mtime.tv_sec = le64_to_cpu(ri->i_mtime);
 366         inode->i_atime.tv_nsec = le32_to_cpu(ri->i_atime_nsec);
 367         inode->i_ctime.tv_nsec = le32_to_cpu(ri->i_ctime_nsec);
 368         inode->i_mtime.tv_nsec = le32_to_cpu(ri->i_mtime_nsec);
 369         inode->i_generation = le32_to_cpu(ri->i_generation);
 370         if (S_ISDIR(inode->i_mode))
 371                 fi->i_current_depth = le32_to_cpu(ri->i_current_depth);
 372         else if (S_ISREG(inode->i_mode))
 373                 fi->i_gc_failures[GC_FAILURE_PIN] =
 374                                         le16_to_cpu(ri->i_gc_failures);
 375         fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid);
 376         fi->i_flags = le32_to_cpu(ri->i_flags);
 377         if (S_ISREG(inode->i_mode))
 378                 fi->i_flags &= ~F2FS_PROJINHERIT_FL;
 379         bitmap_zero(fi->flags, FI_MAX);
 380         fi->i_advise = ri->i_advise;
 381         fi->i_pino = le32_to_cpu(ri->i_pino);
 382         fi->i_dir_level = ri->i_dir_level;
 383
 384         f2fs_init_extent_tree(inode, node_page);
 385
 386         get_inline_info(inode, ri);
 387
 388         fi->i_extra_isize = f2fs_has_extra_attr(inode) ?
 389                                         le16_to_cpu(ri->i_extra_isize) : 0;
 390
 391         if (f2fs_sb_has_flexible_inline_xattr(sbi)) {
 392                 fi->i_inline_xattr_size = le16_to_cpu(ri->i_inline_xattr_size);
 393         } else if (f2fs_has_inline_xattr(inode) ||
 394                                 f2fs_has_inline_dentry(inode)) {
 395                 fi->i_inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
 396         } else {
 397
 398                 /*
 399                  * Previous inline data or directory always reserved 200 bytes
 400                  * in inode layout, even if inline_xattr is disabled. In order
 401                  * to keep inline_dentry's structure for backward compatibility,
 402                  * we get the space back only from inline_data.
 403                  */
 404                 fi->i_inline_xattr_size = 0;
 405         }
 406
 407         if (!sanity_check_inode(inode, node_page)) {
 408                 f2fs_put_page(node_page, 1);
 409                 return -EFSCORRUPTED;
 410         }
 411
 412         /* check data exist */
 413         if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode))
 414                 __recover_inline_status(inode, node_page);
 415
 416         /* try to recover cold bit for non-dir inode */
 417         if (!S_ISDIR(inode->i_mode) && !is_cold_node(node_page)) {
 418                 f2fs_wait_on_page_writeback(node_page, NODE, true, true);
 419                 set_cold_node(node_page, false);
 420                 set_page_dirty(node_page);
 421         }
 422
 423         /* get rdev by using inline_info */
 424         __get_inode_rdev(inode, ri);
 425
 426         if (S_ISREG(inode->i_mode)) {
 427                 err = __written_first_block(sbi, ri);
 428                 if (err < 0) {
 429                         f2fs_put_page(node_page, 1);
 430                         return err;
 431                 }
 432                 if (!err)
 433                         set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN);
 434         }
 435
 436         if (!f2fs_need_inode_block_update(sbi, inode->i_ino))
 437                 fi->last_disk_size = inode->i_size;
 438
 439         if (fi->i_flags & F2FS_PROJINHERIT_FL)
 440                 set_inode_flag(inode, FI_PROJ_INHERIT);
 441
 442         if (f2fs_has_extra_attr(inode) && f2fs_sb_has_project_quota(sbi) &&
 443                         F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_projid))
 444                 i_projid = (projid_t)le32_to_cpu(ri->i_projid);
 445         else
 446                 i_projid = F2FS_DEF_PROJID;
 447         fi->i_projid = make_kprojid(&init_user_ns, i_projid);
 448
 449         if (f2fs_has_extra_attr(inode) && f2fs_sb_has_inode_crtime(sbi) &&
 450                         F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) {
 451                 fi->i_crtime.tv_sec = le64_to_cpu(ri->i_crtime);
 452                 fi->i_crtime.tv_nsec = le32_to_cpu(ri->i_crtime_nsec);
 453         }
 454
 455         if (f2fs_has_extra_attr(inode) && f2fs_sb_has_compression(sbi) &&
 456                                         (fi->i_flags & F2FS_COMPR_FL)) {
 457                 if (F2FS_FITS_IN_INODE(ri, fi->i_extra_isize,
 458                                         i_log_cluster_size)) {
 459                         atomic_set(&fi->i_compr_blocks,
 460                                         le64_to_cpu(ri->i_compr_blocks));
 461                         fi->i_compress_algorithm = ri->i_compress_algorithm;
 462                         fi->i_log_cluster_size = ri->i_log_cluster_size;
 463                         fi->i_compress_flag = le16_to_cpu(ri->i_compress_flag);
 464                         fi->i_cluster_size = 1 << fi->i_log_cluster_size;
 465                         set_inode_flag(inode, FI_COMPRESSED_FILE);
 466                 }
 467         }
 468
 469         F2FS_I(inode)->i_disk_time[0] = inode->i_atime;
 470         F2FS_I(inode)->i_disk_time[1] = inode->i_ctime;
 471         F2FS_I(inode)->i_disk_time[2] = inode->i_mtime;
 472         F2FS_I(inode)->i_disk_time[3] = F2FS_I(inode)->i_crtime;
 473         f2fs_put_page(node_page, 1);
 474
 475         stat_inc_inline_xattr(inode);
 476         stat_inc_inline_inode(inode);
 477         stat_inc_inline_dir(inode);
 478         stat_inc_compr_inode(inode);
 479         stat_add_compr_blocks(inode, atomic_read(&fi->i_compr_blocks));
 480
 481         return 0;
 482 }
 483
 484 struct inode *f2fs_iget(struct super_block *sb, unsigned long ino)
 485 {
 486         struct f2fs_sb_info *sbi = F2FS_SB(sb);
 487         struct inode *inode;
 488         int ret = 0;
 489
 490         inode = iget_locked(sb, ino);
 491         if (!inode)
 492                 return ERR_PTR(-ENOMEM);
 493
 494         if (!(inode->i_state & I_NEW)) {
 495                 trace_f2fs_iget(inode);
 496                 return inode;
 497         }
 498         if (ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi))
 499                 goto make_now;
 500
 501 #ifdef CONFIG_F2FS_FS_COMPRESSION
 502         if (ino == F2FS_COMPRESS_INO(sbi))
 503                 goto make_now;
 504 #endif
 505
 506         ret = do_read_inode(inode);
 507         if (ret)
 508                 goto bad_inode;
 509 make_now:
 510         if (ino == F2FS_NODE_INO(sbi)) {
 511                 inode->i_mapping->a_ops = &f2fs_node_aops;
 512                 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
 513         } else if (ino == F2FS_META_INO(sbi)) {
 514                 inode->i_mapping->a_ops = &f2fs_meta_aops;
 515                 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
 516         } else if (ino == F2FS_COMPRESS_INO(sbi)) {
 517 #ifdef CONFIG_F2FS_FS_COMPRESSION
 518                 inode->i_mapping->a_ops = &f2fs_compress_aops;
 519 #endif
 520                 mapping_set_gfp_mask(inode->i_mapping,
 521                         GFP_NOFS | __GFP_HIGHMEM | __GFP_MOVABLE);
 522         } else if (S_ISREG(inode->i_mode)) {
 523                 inode->i_op = &f2fs_file_inode_operations;
 524                 inode->i_fop = &f2fs_file_operations;
 525                 inode->i_mapping->a_ops = &f2fs_dblock_aops;
 526         } else if (S_ISDIR(inode->i_mode)) {
 527                 inode->i_op = &f2fs_dir_inode_operations;
 528                 inode->i_fop = &f2fs_dir_operations;
 529                 inode->i_mapping->a_ops = &f2fs_dblock_aops;
 530                 inode_nohighmem(inode);
 531         } else if (S_ISLNK(inode->i_mode)) {
 532                 if (file_is_encrypt(inode))
 533                         inode->i_op = &f2fs_encrypted_symlink_inode_operations;
 534                 else
 535                         inode->i_op = &f2fs_symlink_inode_operations;
 536                 inode_nohighmem(inode);
 537                 inode->i_mapping->a_ops = &f2fs_dblock_aops;
 538         } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
 539                         S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
 540                 inode->i_op = &f2fs_special_inode_operations;
 541                 init_special_inode(inode, inode->i_mode, inode->i_rdev);
 542         } else {
 543                 ret = -EIO;
 544                 goto bad_inode;
 545         }
 546         f2fs_set_inode_flags(inode);
 547         unlock_new_inode(inode);
 548         trace_f2fs_iget(inode);
 549         return inode;
 550
 551 bad_inode:
 552         f2fs_inode_synced(inode);
 553         iget_failed(inode);
 554         trace_f2fs_iget_exit(inode, ret);
 555         return ERR_PTR(ret);
 556 }
 557
 558 struct inode *f2fs_iget_retry(struct super_block *sb, unsigned long ino)
 559 {
 560         struct inode *inode;
 561 retry:
 562         inode = f2fs_iget(sb, ino);
 563         if (IS_ERR(inode)) {
 564                 if (PTR_ERR(inode) == -ENOMEM) {
 565                         congestion_wait(BLK_RW_ASYNC, DEFAULT_IO_TIMEOUT);
 566                         goto retry;
 567                 }
 568         }
 569         return inode;
 570 }
 571
 572 void f2fs_update_inode(struct inode *inode, struct page *node_page)
 573 {
 574         struct f2fs_inode *ri;
 575         struct extent_tree *et = F2FS_I(inode)->extent_tree;
 576
 577         f2fs_wait_on_page_writeback(node_page, NODE, true, true);
 578         set_page_dirty(node_page);
 579
 580         f2fs_inode_synced(inode);
 581
 582         ri = F2FS_INODE(node_page);
 583
 584         ri->i_mode = cpu_to_le16(inode->i_mode);
 585         ri->i_advise = F2FS_I(inode)->i_advise;
 586         ri->i_uid = cpu_to_le32(i_uid_read(inode));
 587         ri->i_gid = cpu_to_le32(i_gid_read(inode));
 588         ri->i_links = cpu_to_le32(inode->i_nlink);
 589         ri->i_size = cpu_to_le64(i_size_read(inode));
 590         ri->i_blocks = cpu_to_le64(SECTOR_TO_BLOCK(inode->i_blocks) + 1);
 591
 592         if (et) {
 593                 read_lock(&et->lock);
 594                 set_raw_extent(&et->largest, &ri->i_ext);
 595                 read_unlock(&et->lock);
 596         } else {
 597                 memset(&ri->i_ext, 0, sizeof(ri->i_ext));
 598         }
 599         set_raw_inline(inode, ri);
 600
 601         ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec);
 602         ri->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
 603         ri->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec);
 604         ri->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec);
 605         ri->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
 606         ri->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec);
 607         if (S_ISDIR(inode->i_mode))
 608                 ri->i_current_depth =
 609                         cpu_to_le32(F2FS_I(inode)->i_current_depth);
 610         else if (S_ISREG(inode->i_mode))
 611                 ri->i_gc_failures =
 612                         cpu_to_le16(F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN]);
 613         ri->i_xattr_nid = cpu_to_le32(F2FS_I(inode)->i_xattr_nid);
 614         ri->i_flags = cpu_to_le32(F2FS_I(inode)->i_flags);
 615         ri->i_pino = cpu_to_le32(F2FS_I(inode)->i_pino);
 616         ri->i_generation = cpu_to_le32(inode->i_generation);
 617         ri->i_dir_level = F2FS_I(inode)->i_dir_level;
 618
 619         if (f2fs_has_extra_attr(inode)) {
 620                 ri->i_extra_isize = cpu_to_le16(F2FS_I(inode)->i_extra_isize);
 621
 622                 if (f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(inode)))
 623                         ri->i_inline_xattr_size =
 624                                 cpu_to_le16(F2FS_I(inode)->i_inline_xattr_size);
 625
 626                 if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)) &&
 627                         F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
 628                                                                 i_projid)) {
 629                         projid_t i_projid;
 630
 631                         i_projid = from_kprojid(&init_user_ns,
 632                                                 F2FS_I(inode)->i_projid);
 633                         ri->i_projid = cpu_to_le32(i_projid);
 634                 }
 635
 636                 if (f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)) &&
 637                         F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
 638                                                                 i_crtime)) {
 639                         ri->i_crtime =
 640                                 cpu_to_le64(F2FS_I(inode)->i_crtime.tv_sec);
 641                         ri->i_crtime_nsec =
 642                                 cpu_to_le32(F2FS_I(inode)->i_crtime.tv_nsec);
 643                 }
 644
 645                 if (f2fs_sb_has_compression(F2FS_I_SB(inode)) &&
 646                         F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
 647                                                         i_log_cluster_size)) {
 648                         ri->i_compr_blocks =
 649                                 cpu_to_le64(atomic_read(
 650                                         &F2FS_I(inode)->i_compr_blocks));
 651                         ri->i_compress_algorithm =
 652                                 F2FS_I(inode)->i_compress_algorithm;
 653                         ri->i_compress_flag =
 654                                 cpu_to_le16(F2FS_I(inode)->i_compress_flag);
 655                         ri->i_log_cluster_size =
 656                                 F2FS_I(inode)->i_log_cluster_size;
 657                 }
 658         }
 659
 660         __set_inode_rdev(inode, ri);
 661
 662         /* deleted inode */
 663         if (inode->i_nlink == 0)
 664                 clear_page_private_inline(node_page);
 665
 666         F2FS_I(inode)->i_disk_time[0] = inode->i_atime;
 667         F2FS_I(inode)->i_disk_time[1] = inode->i_ctime;
 668         F2FS_I(inode)->i_disk_time[2] = inode->i_mtime;
 669         F2FS_I(inode)->i_disk_time[3] = F2FS_I(inode)->i_crtime;
 670
 671 #ifdef CONFIG_F2FS_CHECK_FS
 672         f2fs_inode_chksum_set(F2FS_I_SB(inode), node_page);
 673 #endif
 674 }
 675
 676 void f2fs_update_inode_page(struct inode *inode)
 677 {
 678         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 679         struct page *node_page;
 680 retry:
 681         node_page = f2fs_get_node_page(sbi, inode->i_ino);
 682         if (IS_ERR(node_page)) {
 683                 int err = PTR_ERR(node_page);
 684
 685                 if (err == -ENOMEM) {
 686                         cond_resched();
 687                         goto retry;
 688                 } else if (err != -ENOENT) {
 689                         f2fs_stop_checkpoint(sbi, false);
 690                 }
 691                 return;
 692         }
 693         f2fs_update_inode(inode, node_page);
 694         f2fs_put_page(node_page, 1);
 695 }
 696
 697 int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc)
 698 {
 699         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 700
 701         if (inode->i_ino == F2FS_NODE_INO(sbi) ||
 702                         inode->i_ino == F2FS_META_INO(sbi))
 703                 return 0;
 704
 705         /*
 706          * atime could be updated without dirtying f2fs inode in lazytime mode
 707          */
 708         if (f2fs_is_time_consistent(inode) &&
 709                 !is_inode_flag_set(inode, FI_DIRTY_INODE))
 710                 return 0;
 711
 712         if (!f2fs_is_checkpoint_ready(sbi))
 713                 return -ENOSPC;
 714
 715         /*
 716          * We need to balance fs here to prevent from producing dirty node pages
 717          * during the urgent cleaning time when running out of free sections.
 718          */
 719         f2fs_update_inode_page(inode);
 720         if (wbc && wbc->nr_to_write)
 721                 f2fs_balance_fs(sbi, true);
 722         return 0;
 723 }
 724
 725 /*
 726  * Called at the last iput() if i_nlink is zero
 727  */
 728 void f2fs_evict_inode(struct inode *inode)
 729 {
 730         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 731         nid_t xnid = F2FS_I(inode)->i_xattr_nid;
 732         int err = 0;
 733
 734         /* some remained atomic pages should discarded */
 735         if (f2fs_is_atomic_file(inode))
 736                 f2fs_drop_inmem_pages(inode);
 737
 738         trace_f2fs_evict_inode(inode);
 739         truncate_inode_pages_final(&inode->i_data);
 740
 741         if (test_opt(sbi, COMPRESS_CACHE) && f2fs_compressed_file(inode))
 742                 f2fs_invalidate_compress_pages(sbi, inode->i_ino);
 743
 744         if (inode->i_ino == F2FS_NODE_INO(sbi) ||
 745                         inode->i_ino == F2FS_META_INO(sbi) ||
 746                         inode->i_ino == F2FS_COMPRESS_INO(sbi))
 747                 goto out_clear;
 748
 749         f2fs_bug_on(sbi, get_dirty_pages(inode));
 750         f2fs_remove_dirty_inode(inode);
 751
 752         f2fs_destroy_extent_tree(inode);
 753
 754         if (inode->i_nlink || is_bad_inode(inode))
 755                 goto no_delete;
 756
 757         err = dquot_initialize(inode);
 758         if (err) {
 759                 err = 0;
 760                 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
 761         }
 762
 763         f2fs_remove_ino_entry(sbi, inode->i_ino, APPEND_INO);
 764         f2fs_remove_ino_entry(sbi, inode->i_ino, UPDATE_INO);
 765         f2fs_remove_ino_entry(sbi, inode->i_ino, FLUSH_INO);
 766
 767         sb_start_intwrite(inode->i_sb);
 768         set_inode_flag(inode, FI_NO_ALLOC);
 769         i_size_write(inode, 0);
 770 retry:
 771         if (F2FS_HAS_BLOCKS(inode))
 772                 err = f2fs_truncate(inode);
 773
 774         if (time_to_inject(sbi, FAULT_EVICT_INODE)) {
 775                 f2fs_show_injection_info(sbi, FAULT_EVICT_INODE);
 776                 err = -EIO;
 777         }
 778
 779         if (!err) {
 780                 f2fs_lock_op(sbi);
 781                 err = f2fs_remove_inode_page(inode);
 782                 f2fs_unlock_op(sbi);
 783                 if (err == -ENOENT)
 784                         err = 0;
 785         }
 786
 787         /* give more chances, if ENOMEM case */
 788         if (err == -ENOMEM) {
 789                 err = 0;
 790                 goto retry;
 791         }
 792
 793         if (err) {
 794                 f2fs_update_inode_page(inode);
 795                 if (dquot_initialize_needed(inode))
 796                         set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
 797         }
 798         sb_end_intwrite(inode->i_sb);
 799 no_delete:
 800         dquot_drop(inode);
 801
 802         stat_dec_inline_xattr(inode);
 803         stat_dec_inline_dir(inode);
 804         stat_dec_inline_inode(inode);
 805         stat_dec_compr_inode(inode);
 806         stat_sub_compr_blocks(inode,
 807                         atomic_read(&F2FS_I(inode)->i_compr_blocks));
 808
 809         if (likely(!f2fs_cp_error(sbi) &&
 810                                 !is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
 811                 f2fs_bug_on(sbi, is_inode_flag_set(inode, FI_DIRTY_INODE));
 812         else
 813                 f2fs_inode_synced(inode);
 814
 815         /* for the case f2fs_new_inode() was failed, .i_ino is zero, skip it */
 816         if (inode->i_ino)
 817                 invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino,
 818                                                         inode->i_ino);
 819         if (xnid)
 820                 invalidate_mapping_pages(NODE_MAPPING(sbi), xnid, xnid);
 821         if (inode->i_nlink) {
 822                 if (is_inode_flag_set(inode, FI_APPEND_WRITE))
 823                         f2fs_add_ino_entry(sbi, inode->i_ino, APPEND_INO);
 824                 if (is_inode_flag_set(inode, FI_UPDATE_WRITE))
 825                         f2fs_add_ino_entry(sbi, inode->i_ino, UPDATE_INO);
 826         }
 827         if (is_inode_flag_set(inode, FI_FREE_NID)) {
 828                 f2fs_alloc_nid_failed(sbi, inode->i_ino);
 829                 clear_inode_flag(inode, FI_FREE_NID);
 830         } else {
 831                 /*
 832                  * If xattr nid is corrupted, we can reach out error condition,
 833                  * err & !f2fs_exist_written_data(sbi, inode->i_ino, ORPHAN_INO)).
 834                  * In that case, f2fs_check_nid_range() is enough to give a clue.
 835                  */
 836         }
 837 out_clear:
 838         fscrypt_put_encryption_info(inode);
 839         fsverity_cleanup_inode(inode);
 840         clear_inode(inode);
 841 }
 842
 843 /* caller should call f2fs_lock_op() */
 844 void f2fs_handle_failed_inode(struct inode *inode)
 845 {
 846         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 847         struct node_info ni;
 848         int err;
 849
 850         /*
 851          * clear nlink of inode in order to release resource of inode
 852          * immediately.
 853          */
 854         clear_nlink(inode);
 855
 856         /*
 857          * we must call this to avoid inode being remained as dirty, resulting
 858          * in a panic when flushing dirty inodes in gdirty_list.
 859          */
 860         f2fs_update_inode_page(inode);
 861         f2fs_inode_synced(inode);
 862
 863         /* don't make bad inode, since it becomes a regular file. */
 864         unlock_new_inode(inode);
 865
 866         /*
 867          * Note: we should add inode to orphan list before f2fs_unlock_op()
 868          * so we can prevent losing this orphan when encoutering checkpoint
 869          * and following suddenly power-off.
 870          */
 871         err = f2fs_get_node_info(sbi, inode->i_ino, &ni);
 872         if (err) {
 873                 set_sbi_flag(sbi, SBI_NEED_FSCK);
 874                 f2fs_warn(sbi, "May loss orphan inode, run fsck to fix.");
 875                 goto out;
 876         }
 877
 878         if (ni.blk_addr != NULL_ADDR) {
 879                 err = f2fs_acquire_orphan_inode(sbi);
 880                 if (err) {
 881                         set_sbi_flag(sbi, SBI_NEED_FSCK);
 882                         f2fs_warn(sbi, "Too many orphan inodes, run fsck to fix.");
 883                 } else {
 884                         f2fs_add_orphan_inode(inode);
 885                 }
 886                 f2fs_alloc_nid_done(sbi, inode->i_ino);
 887         } else {
 888                 set_inode_flag(inode, FI_FREE_NID);
 889         }
 890
 891 out:
 892         f2fs_unlock_op(sbi);
 893
 894         /* iput will drop the inode object */
 895         iput(inode);
 896 }