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/writeback.h>
  12 #include <linux/sched/mm.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 (fi->extent_tree) {
 264                 struct extent_info *ei = &fi->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_sanity_check_inline_data(inode)) {
 280                 set_sbi_flag(sbi, SBI_NEED_FSCK);
 281                 f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_data, run fsck to fix",
 282                           __func__, inode->i_ino, inode->i_mode);
 283                 return false;
 284         }
 285
 286         if (f2fs_has_inline_dentry(inode) && !S_ISDIR(inode->i_mode)) {
 287                 set_sbi_flag(sbi, SBI_NEED_FSCK);
 288                 f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_dentry, run fsck to fix",
 289                           __func__, inode->i_ino, inode->i_mode);
 290                 return false;
 291         }
 292
 293         if ((fi->i_flags & F2FS_CASEFOLD_FL) && !f2fs_sb_has_casefold(sbi)) {
 294                 set_sbi_flag(sbi, SBI_NEED_FSCK);
 295                 f2fs_warn(sbi, "%s: inode (ino=%lx) has casefold flag, but casefold feature is off",
 296                           __func__, inode->i_ino);
 297                 return false;
 298         }
 299
 300         if (f2fs_has_extra_attr(inode) && f2fs_sb_has_compression(sbi) &&
 301                         fi->i_flags & F2FS_COMPR_FL &&
 302                         F2FS_FITS_IN_INODE(ri, fi->i_extra_isize,
 303                                                 i_log_cluster_size)) {
 304                 if (ri->i_compress_algorithm >= COMPRESS_MAX) {
 305                         set_sbi_flag(sbi, SBI_NEED_FSCK);
 306                         f2fs_warn(sbi, "%s: inode (ino=%lx) has unsupported "
 307                                 "compress algorithm: %u, run fsck to fix",
 308                                   __func__, inode->i_ino,
 309                                   ri->i_compress_algorithm);
 310                         return false;
 311                 }
 312                 if (le64_to_cpu(ri->i_compr_blocks) >
 313                                 SECTOR_TO_BLOCK(inode->i_blocks)) {
 314                         set_sbi_flag(sbi, SBI_NEED_FSCK);
 315                         f2fs_warn(sbi, "%s: inode (ino=%lx) has inconsistent "
 316                                 "i_compr_blocks:%llu, i_blocks:%llu, run fsck to fix",
 317                                   __func__, inode->i_ino,
 318                                   le64_to_cpu(ri->i_compr_blocks),
 319                                   SECTOR_TO_BLOCK(inode->i_blocks));
 320                         return false;
 321                 }
 322                 if (ri->i_log_cluster_size < MIN_COMPRESS_LOG_SIZE ||
 323                         ri->i_log_cluster_size > MAX_COMPRESS_LOG_SIZE) {
 324                         set_sbi_flag(sbi, SBI_NEED_FSCK);
 325                         f2fs_warn(sbi, "%s: inode (ino=%lx) has unsupported "
 326                                 "log cluster size: %u, run fsck to fix",
 327                                   __func__, inode->i_ino,
 328                                   ri->i_log_cluster_size);
 329                         return false;
 330                 }
 331         }
 332
 333         return true;
 334 }
 335
 336 static int do_read_inode(struct inode *inode)
 337 {
 338         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 339         struct f2fs_inode_info *fi = F2FS_I(inode);
 340         struct page *node_page;
 341         struct f2fs_inode *ri;
 342         projid_t i_projid;
 343         int err;
 344
 345         /* Check if ino is within scope */
 346         if (f2fs_check_nid_range(sbi, inode->i_ino))
 347                 return -EINVAL;
 348
 349         node_page = f2fs_get_node_page(sbi, inode->i_ino);
 350         if (IS_ERR(node_page))
 351                 return PTR_ERR(node_page);
 352
 353         ri = F2FS_INODE(node_page);
 354
 355         inode->i_mode = le16_to_cpu(ri->i_mode);
 356         i_uid_write(inode, le32_to_cpu(ri->i_uid));
 357         i_gid_write(inode, le32_to_cpu(ri->i_gid));
 358         set_nlink(inode, le32_to_cpu(ri->i_links));
 359         inode->i_size = le64_to_cpu(ri->i_size);
 360         inode->i_blocks = SECTOR_FROM_BLOCK(le64_to_cpu(ri->i_blocks) - 1);
 361
 362         inode->i_atime.tv_sec = le64_to_cpu(ri->i_atime);
 363         inode->i_ctime.tv_sec = le64_to_cpu(ri->i_ctime);
 364         inode->i_mtime.tv_sec = le64_to_cpu(ri->i_mtime);
 365         inode->i_atime.tv_nsec = le32_to_cpu(ri->i_atime_nsec);
 366         inode->i_ctime.tv_nsec = le32_to_cpu(ri->i_ctime_nsec);
 367         inode->i_mtime.tv_nsec = le32_to_cpu(ri->i_mtime_nsec);
 368         inode->i_generation = le32_to_cpu(ri->i_generation);
 369         if (S_ISDIR(inode->i_mode))
 370                 fi->i_current_depth = le32_to_cpu(ri->i_current_depth);
 371         else if (S_ISREG(inode->i_mode))
 372                 fi->i_gc_failures[GC_FAILURE_PIN] =
 373                                         le16_to_cpu(ri->i_gc_failures);
 374         fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid);
 375         fi->i_flags = le32_to_cpu(ri->i_flags);
 376         if (S_ISREG(inode->i_mode))
 377                 fi->i_flags &= ~F2FS_PROJINHERIT_FL;
 378         bitmap_zero(fi->flags, FI_MAX);
 379         fi->i_advise = ri->i_advise;
 380         fi->i_pino = le32_to_cpu(ri->i_pino);
 381         fi->i_dir_level = ri->i_dir_level;
 382
 383         f2fs_init_extent_tree(inode, node_page);
 384
 385         get_inline_info(inode, ri);
 386
 387         fi->i_extra_isize = f2fs_has_extra_attr(inode) ?
 388                                         le16_to_cpu(ri->i_extra_isize) : 0;
 389
 390         if (f2fs_sb_has_flexible_inline_xattr(sbi)) {
 391                 fi->i_inline_xattr_size = le16_to_cpu(ri->i_inline_xattr_size);
 392         } else if (f2fs_has_inline_xattr(inode) ||
 393                                 f2fs_has_inline_dentry(inode)) {
 394                 fi->i_inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
 395         } else {
 396
 397                 /*
 398                  * Previous inline data or directory always reserved 200 bytes
 399                  * in inode layout, even if inline_xattr is disabled. In order
 400                  * to keep inline_dentry's structure for backward compatibility,
 401                  * we get the space back only from inline_data.
 402                  */
 403                 fi->i_inline_xattr_size = 0;
 404         }
 405
 406         if (!sanity_check_inode(inode, node_page)) {
 407                 f2fs_put_page(node_page, 1);
 408                 return -EFSCORRUPTED;
 409         }
 410
 411         /* check data exist */
 412         if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode))
 413                 __recover_inline_status(inode, node_page);
 414
 415         /* try to recover cold bit for non-dir inode */
 416         if (!S_ISDIR(inode->i_mode) && !is_cold_node(node_page)) {
 417                 f2fs_wait_on_page_writeback(node_page, NODE, true, true);
 418                 set_cold_node(node_page, false);
 419                 set_page_dirty(node_page);
 420         }
 421
 422         /* get rdev by using inline_info */
 423         __get_inode_rdev(inode, ri);
 424
 425         if (S_ISREG(inode->i_mode)) {
 426                 err = __written_first_block(sbi, ri);
 427                 if (err < 0) {
 428                         f2fs_put_page(node_page, 1);
 429                         return err;
 430                 }
 431                 if (!err)
 432                         set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN);
 433         }
 434
 435         if (!f2fs_need_inode_block_update(sbi, inode->i_ino))
 436                 fi->last_disk_size = inode->i_size;
 437
 438         if (fi->i_flags & F2FS_PROJINHERIT_FL)
 439                 set_inode_flag(inode, FI_PROJ_INHERIT);
 440
 441         if (f2fs_has_extra_attr(inode) && f2fs_sb_has_project_quota(sbi) &&
 442                         F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_projid))
 443                 i_projid = (projid_t)le32_to_cpu(ri->i_projid);
 444         else
 445                 i_projid = F2FS_DEF_PROJID;
 446         fi->i_projid = make_kprojid(&init_user_ns, i_projid);
 447
 448         if (f2fs_has_extra_attr(inode) && f2fs_sb_has_inode_crtime(sbi) &&
 449                         F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) {
 450                 fi->i_crtime.tv_sec = le64_to_cpu(ri->i_crtime);
 451                 fi->i_crtime.tv_nsec = le32_to_cpu(ri->i_crtime_nsec);
 452         }
 453
 454         if (f2fs_has_extra_attr(inode) && f2fs_sb_has_compression(sbi) &&
 455                                         (fi->i_flags & F2FS_COMPR_FL)) {
 456                 if (F2FS_FITS_IN_INODE(ri, fi->i_extra_isize,
 457                                         i_log_cluster_size)) {
 458                         atomic_set(&fi->i_compr_blocks,
 459                                         le64_to_cpu(ri->i_compr_blocks));
 460                         fi->i_compress_algorithm = ri->i_compress_algorithm;
 461                         fi->i_log_cluster_size = ri->i_log_cluster_size;
 462                         fi->i_compress_flag = le16_to_cpu(ri->i_compress_flag);
 463                         fi->i_cluster_size = 1 << fi->i_log_cluster_size;
 464                         set_inode_flag(inode, FI_COMPRESSED_FILE);
 465                 }
 466         }
 467
 468         fi->i_disk_time[0] = inode->i_atime;
 469         fi->i_disk_time[1] = inode->i_ctime;
 470         fi->i_disk_time[2] = inode->i_mtime;
 471         fi->i_disk_time[3] = fi->i_crtime;
 472         f2fs_put_page(node_page, 1);
 473
 474         stat_inc_inline_xattr(inode);
 475         stat_inc_inline_inode(inode);
 476         stat_inc_inline_dir(inode);
 477         stat_inc_compr_inode(inode);
 478         stat_add_compr_blocks(inode, atomic_read(&fi->i_compr_blocks));
 479
 480         return 0;
 481 }
 482
 483 struct inode *f2fs_iget(struct super_block *sb, unsigned long ino)
 484 {
 485         struct f2fs_sb_info *sbi = F2FS_SB(sb);
 486         struct inode *inode;
 487         int ret = 0;
 488
 489         inode = iget_locked(sb, ino);
 490         if (!inode)
 491                 return ERR_PTR(-ENOMEM);
 492
 493         if (!(inode->i_state & I_NEW)) {
 494                 trace_f2fs_iget(inode);
 495                 return inode;
 496         }
 497         if (ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi))
 498                 goto make_now;
 499
 500 #ifdef CONFIG_F2FS_FS_COMPRESSION
 501         if (ino == F2FS_COMPRESS_INO(sbi))
 502                 goto make_now;
 503 #endif
 504
 505         ret = do_read_inode(inode);
 506         if (ret)
 507                 goto bad_inode;
 508 make_now:
 509         if (ino == F2FS_NODE_INO(sbi)) {
 510                 inode->i_mapping->a_ops = &f2fs_node_aops;
 511                 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
 512         } else if (ino == F2FS_META_INO(sbi)) {
 513                 inode->i_mapping->a_ops = &f2fs_meta_aops;
 514                 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
 515         } else if (ino == F2FS_COMPRESS_INO(sbi)) {
 516 #ifdef CONFIG_F2FS_FS_COMPRESSION
 517                 inode->i_mapping->a_ops = &f2fs_compress_aops;
 518                 /*
 519                  * generic_error_remove_page only truncates pages of regular
 520                  * inode
 521                  */
 522                 inode->i_mode |= S_IFREG;
 523 #endif
 524                 mapping_set_gfp_mask(inode->i_mapping,
 525                         GFP_NOFS | __GFP_HIGHMEM | __GFP_MOVABLE);
 526         } else if (S_ISREG(inode->i_mode)) {
 527                 inode->i_op = &f2fs_file_inode_operations;
 528                 inode->i_fop = &f2fs_file_operations;
 529                 inode->i_mapping->a_ops = &f2fs_dblock_aops;
 530         } else if (S_ISDIR(inode->i_mode)) {
 531                 inode->i_op = &f2fs_dir_inode_operations;
 532                 inode->i_fop = &f2fs_dir_operations;
 533                 inode->i_mapping->a_ops = &f2fs_dblock_aops;
 534                 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
 535         } else if (S_ISLNK(inode->i_mode)) {
 536                 if (file_is_encrypt(inode))
 537                         inode->i_op = &f2fs_encrypted_symlink_inode_operations;
 538                 else
 539                         inode->i_op = &f2fs_symlink_inode_operations;
 540                 inode_nohighmem(inode);
 541                 inode->i_mapping->a_ops = &f2fs_dblock_aops;
 542         } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
 543                         S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
 544                 inode->i_op = &f2fs_special_inode_operations;
 545                 init_special_inode(inode, inode->i_mode, inode->i_rdev);
 546         } else {
 547                 ret = -EIO;
 548                 goto bad_inode;
 549         }
 550         f2fs_set_inode_flags(inode);
 551
 552         if (file_should_truncate(inode) &&
 553                         !is_sbi_flag_set(sbi, SBI_POR_DOING)) {
 554                 ret = f2fs_truncate(inode);
 555                 if (ret)
 556                         goto bad_inode;
 557                 file_dont_truncate(inode);
 558         }
 559
 560         unlock_new_inode(inode);
 561         trace_f2fs_iget(inode);
 562         return inode;
 563
 564 bad_inode:
 565         f2fs_inode_synced(inode);
 566         iget_failed(inode);
 567         trace_f2fs_iget_exit(inode, ret);
 568         return ERR_PTR(ret);
 569 }
 570
 571 struct inode *f2fs_iget_retry(struct super_block *sb, unsigned long ino)
 572 {
 573         struct inode *inode;
 574 retry:
 575         inode = f2fs_iget(sb, ino);
 576         if (IS_ERR(inode)) {
 577                 if (PTR_ERR(inode) == -ENOMEM) {
 578                         memalloc_retry_wait(GFP_NOFS);
 579                         goto retry;
 580                 }
 581         }
 582         return inode;
 583 }
 584
 585 void f2fs_update_inode(struct inode *inode, struct page *node_page)
 586 {
 587         struct f2fs_inode *ri;
 588         struct extent_tree *et = F2FS_I(inode)->extent_tree;
 589
 590         f2fs_wait_on_page_writeback(node_page, NODE, true, true);
 591         set_page_dirty(node_page);
 592
 593         f2fs_inode_synced(inode);
 594
 595         ri = F2FS_INODE(node_page);
 596
 597         ri->i_mode = cpu_to_le16(inode->i_mode);
 598         ri->i_advise = F2FS_I(inode)->i_advise;
 599         ri->i_uid = cpu_to_le32(i_uid_read(inode));
 600         ri->i_gid = cpu_to_le32(i_gid_read(inode));
 601         ri->i_links = cpu_to_le32(inode->i_nlink);
 602         ri->i_size = cpu_to_le64(i_size_read(inode));
 603         ri->i_blocks = cpu_to_le64(SECTOR_TO_BLOCK(inode->i_blocks) + 1);
 604
 605         if (et) {
 606                 read_lock(&et->lock);
 607                 set_raw_extent(&et->largest, &ri->i_ext);
 608                 read_unlock(&et->lock);
 609         } else {
 610                 memset(&ri->i_ext, 0, sizeof(ri->i_ext));
 611         }
 612         set_raw_inline(inode, ri);
 613
 614         ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec);
 615         ri->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
 616         ri->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec);
 617         ri->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec);
 618         ri->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
 619         ri->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec);
 620         if (S_ISDIR(inode->i_mode))
 621                 ri->i_current_depth =
 622                         cpu_to_le32(F2FS_I(inode)->i_current_depth);
 623         else if (S_ISREG(inode->i_mode))
 624                 ri->i_gc_failures =
 625                         cpu_to_le16(F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN]);
 626         ri->i_xattr_nid = cpu_to_le32(F2FS_I(inode)->i_xattr_nid);
 627         ri->i_flags = cpu_to_le32(F2FS_I(inode)->i_flags);
 628         ri->i_pino = cpu_to_le32(F2FS_I(inode)->i_pino);
 629         ri->i_generation = cpu_to_le32(inode->i_generation);
 630         ri->i_dir_level = F2FS_I(inode)->i_dir_level;
 631
 632         if (f2fs_has_extra_attr(inode)) {
 633                 ri->i_extra_isize = cpu_to_le16(F2FS_I(inode)->i_extra_isize);
 634
 635                 if (f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(inode)))
 636                         ri->i_inline_xattr_size =
 637                                 cpu_to_le16(F2FS_I(inode)->i_inline_xattr_size);
 638
 639                 if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)) &&
 640                         F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
 641                                                                 i_projid)) {
 642                         projid_t i_projid;
 643
 644                         i_projid = from_kprojid(&init_user_ns,
 645                                                 F2FS_I(inode)->i_projid);
 646                         ri->i_projid = cpu_to_le32(i_projid);
 647                 }
 648
 649                 if (f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)) &&
 650                         F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
 651                                                                 i_crtime)) {
 652                         ri->i_crtime =
 653                                 cpu_to_le64(F2FS_I(inode)->i_crtime.tv_sec);
 654                         ri->i_crtime_nsec =
 655                                 cpu_to_le32(F2FS_I(inode)->i_crtime.tv_nsec);
 656                 }
 657
 658                 if (f2fs_sb_has_compression(F2FS_I_SB(inode)) &&
 659                         F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
 660                                                         i_log_cluster_size)) {
 661                         ri->i_compr_blocks =
 662                                 cpu_to_le64(atomic_read(
 663                                         &F2FS_I(inode)->i_compr_blocks));
 664                         ri->i_compress_algorithm =
 665                                 F2FS_I(inode)->i_compress_algorithm;
 666                         ri->i_compress_flag =
 667                                 cpu_to_le16(F2FS_I(inode)->i_compress_flag);
 668                         ri->i_log_cluster_size =
 669                                 F2FS_I(inode)->i_log_cluster_size;
 670                 }
 671         }
 672
 673         __set_inode_rdev(inode, ri);
 674
 675         /* deleted inode */
 676         if (inode->i_nlink == 0)
 677                 clear_page_private_inline(node_page);
 678
 679         F2FS_I(inode)->i_disk_time[0] = inode->i_atime;
 680         F2FS_I(inode)->i_disk_time[1] = inode->i_ctime;
 681         F2FS_I(inode)->i_disk_time[2] = inode->i_mtime;
 682         F2FS_I(inode)->i_disk_time[3] = F2FS_I(inode)->i_crtime;
 683
 684 #ifdef CONFIG_F2FS_CHECK_FS
 685         f2fs_inode_chksum_set(F2FS_I_SB(inode), node_page);
 686 #endif
 687 }
 688
 689 void f2fs_update_inode_page(struct inode *inode)
 690 {
 691         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 692         struct page *node_page;
 693 retry:
 694         node_page = f2fs_get_node_page(sbi, inode->i_ino);
 695         if (IS_ERR(node_page)) {
 696                 int err = PTR_ERR(node_page);
 697
 698                 if (err == -ENOMEM) {
 699                         cond_resched();
 700                         goto retry;
 701                 } else if (err != -ENOENT) {
 702                         f2fs_stop_checkpoint(sbi, false);
 703                 }
 704                 return;
 705         }
 706         f2fs_update_inode(inode, node_page);
 707         f2fs_put_page(node_page, 1);
 708 }
 709
 710 int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc)
 711 {
 712         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 713
 714         if (inode->i_ino == F2FS_NODE_INO(sbi) ||
 715                         inode->i_ino == F2FS_META_INO(sbi))
 716                 return 0;
 717
 718         /*
 719          * atime could be updated without dirtying f2fs inode in lazytime mode
 720          */
 721         if (f2fs_is_time_consistent(inode) &&
 722                 !is_inode_flag_set(inode, FI_DIRTY_INODE))
 723                 return 0;
 724
 725         if (!f2fs_is_checkpoint_ready(sbi))
 726                 return -ENOSPC;
 727
 728         /*
 729          * We need to balance fs here to prevent from producing dirty node pages
 730          * during the urgent cleaning time when running out of free sections.
 731          */
 732         f2fs_update_inode_page(inode);
 733         if (wbc && wbc->nr_to_write)
 734                 f2fs_balance_fs(sbi, true);
 735         return 0;
 736 }
 737
 738 /*
 739  * Called at the last iput() if i_nlink is zero
 740  */
 741 void f2fs_evict_inode(struct inode *inode)
 742 {
 743         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 744         nid_t xnid = F2FS_I(inode)->i_xattr_nid;
 745         int err = 0;
 746
 747         if (f2fs_is_atomic_file(inode))
 748                 f2fs_abort_atomic_write(inode, true);
 749
 750         trace_f2fs_evict_inode(inode);
 751         truncate_inode_pages_final(&inode->i_data);
 752
 753         if ((inode->i_nlink || is_bad_inode(inode)) &&
 754                 test_opt(sbi, COMPRESS_CACHE) && f2fs_compressed_file(inode))
 755                 f2fs_invalidate_compress_pages(sbi, inode->i_ino);
 756
 757         if (inode->i_ino == F2FS_NODE_INO(sbi) ||
 758                         inode->i_ino == F2FS_META_INO(sbi) ||
 759                         inode->i_ino == F2FS_COMPRESS_INO(sbi))
 760                 goto out_clear;
 761
 762         f2fs_bug_on(sbi, get_dirty_pages(inode));
 763         f2fs_remove_dirty_inode(inode);
 764
 765         f2fs_destroy_extent_tree(inode);
 766
 767         if (inode->i_nlink || is_bad_inode(inode))
 768                 goto no_delete;
 769
 770         err = f2fs_dquot_initialize(inode);
 771         if (err) {
 772                 err = 0;
 773                 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
 774         }
 775
 776         f2fs_remove_ino_entry(sbi, inode->i_ino, APPEND_INO);
 777         f2fs_remove_ino_entry(sbi, inode->i_ino, UPDATE_INO);
 778         f2fs_remove_ino_entry(sbi, inode->i_ino, FLUSH_INO);
 779
 780         if (!is_sbi_flag_set(sbi, SBI_IS_FREEZING))
 781                 sb_start_intwrite(inode->i_sb);
 782         set_inode_flag(inode, FI_NO_ALLOC);
 783         i_size_write(inode, 0);
 784 retry:
 785         if (F2FS_HAS_BLOCKS(inode))
 786                 err = f2fs_truncate(inode);
 787
 788         if (time_to_inject(sbi, FAULT_EVICT_INODE)) {
 789                 f2fs_show_injection_info(sbi, FAULT_EVICT_INODE);
 790                 err = -EIO;
 791         }
 792
 793         if (!err) {
 794                 f2fs_lock_op(sbi);
 795                 err = f2fs_remove_inode_page(inode);
 796                 f2fs_unlock_op(sbi);
 797                 if (err == -ENOENT) {
 798                         err = 0;
 799
 800                         /*
 801                          * in fuzzed image, another node may has the same
 802                          * block address as inode's, if it was truncated
 803                          * previously, truncation of inode node will fail.
 804                          */
 805                         if (is_inode_flag_set(inode, FI_DIRTY_INODE)) {
 806                                 f2fs_warn(F2FS_I_SB(inode),
 807                                         "f2fs_evict_inode: inconsistent node id, ino:%lu",
 808                                         inode->i_ino);
 809                                 f2fs_inode_synced(inode);
 810                                 set_sbi_flag(sbi, SBI_NEED_FSCK);
 811                         }
 812                 }
 813         }
 814
 815         /* give more chances, if ENOMEM case */
 816         if (err == -ENOMEM) {
 817                 err = 0;
 818                 goto retry;
 819         }
 820
 821         if (err) {
 822                 f2fs_update_inode_page(inode);
 823                 if (dquot_initialize_needed(inode))
 824                         set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
 825         }
 826         if (!is_sbi_flag_set(sbi, SBI_IS_FREEZING))
 827                 sb_end_intwrite(inode->i_sb);
 828 no_delete:
 829         dquot_drop(inode);
 830
 831         stat_dec_inline_xattr(inode);
 832         stat_dec_inline_dir(inode);
 833         stat_dec_inline_inode(inode);
 834         stat_dec_compr_inode(inode);
 835         stat_sub_compr_blocks(inode,
 836                         atomic_read(&F2FS_I(inode)->i_compr_blocks));
 837
 838         if (likely(!f2fs_cp_error(sbi) &&
 839                                 !is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
 840                 f2fs_bug_on(sbi, is_inode_flag_set(inode, FI_DIRTY_INODE));
 841         else
 842                 f2fs_inode_synced(inode);
 843
 844         /* for the case f2fs_new_inode() was failed, .i_ino is zero, skip it */
 845         if (inode->i_ino)
 846                 invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino,
 847                                                         inode->i_ino);
 848         if (xnid)
 849                 invalidate_mapping_pages(NODE_MAPPING(sbi), xnid, xnid);
 850         if (inode->i_nlink) {
 851                 if (is_inode_flag_set(inode, FI_APPEND_WRITE))
 852                         f2fs_add_ino_entry(sbi, inode->i_ino, APPEND_INO);
 853                 if (is_inode_flag_set(inode, FI_UPDATE_WRITE))
 854                         f2fs_add_ino_entry(sbi, inode->i_ino, UPDATE_INO);
 855         }
 856         if (is_inode_flag_set(inode, FI_FREE_NID)) {
 857                 f2fs_alloc_nid_failed(sbi, inode->i_ino);
 858                 clear_inode_flag(inode, FI_FREE_NID);
 859         } else {
 860                 /*
 861                  * If xattr nid is corrupted, we can reach out error condition,
 862                  * err & !f2fs_exist_written_data(sbi, inode->i_ino, ORPHAN_INO)).
 863                  * In that case, f2fs_check_nid_range() is enough to give a clue.
 864                  */
 865         }
 866 out_clear:
 867         fscrypt_put_encryption_info(inode);
 868         fsverity_cleanup_inode(inode);
 869         clear_inode(inode);
 870 }
 871
 872 /* caller should call f2fs_lock_op() */
 873 void f2fs_handle_failed_inode(struct inode *inode)
 874 {
 875         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 876         struct node_info ni;
 877         int err;
 878
 879         /*
 880          * clear nlink of inode in order to release resource of inode
 881          * immediately.
 882          */
 883         clear_nlink(inode);
 884
 885         /*
 886          * we must call this to avoid inode being remained as dirty, resulting
 887          * in a panic when flushing dirty inodes in gdirty_list.
 888          */
 889         f2fs_update_inode_page(inode);
 890         f2fs_inode_synced(inode);
 891
 892         /* don't make bad inode, since it becomes a regular file. */
 893         unlock_new_inode(inode);
 894
 895         /*
 896          * Note: we should add inode to orphan list before f2fs_unlock_op()
 897          * so we can prevent losing this orphan when encoutering checkpoint
 898          * and following suddenly power-off.
 899          */
 900         err = f2fs_get_node_info(sbi, inode->i_ino, &ni, false);
 901         if (err) {
 902                 set_sbi_flag(sbi, SBI_NEED_FSCK);
 903                 set_inode_flag(inode, FI_FREE_NID);
 904                 f2fs_warn(sbi, "May loss orphan inode, run fsck to fix.");
 905                 goto out;
 906         }
 907
 908         if (ni.blk_addr != NULL_ADDR) {
 909                 err = f2fs_acquire_orphan_inode(sbi);
 910                 if (err) {
 911                         set_sbi_flag(sbi, SBI_NEED_FSCK);
 912                         f2fs_warn(sbi, "Too many orphan inodes, run fsck to fix.");
 913                 } else {
 914                         f2fs_add_orphan_inode(inode);
 915                 }
 916                 f2fs_alloc_nid_done(sbi, inode->i_ino);
 917         } else {
 918                 set_inode_flag(inode, FI_FREE_NID);
 919         }
 920
 921 out:
 922         f2fs_unlock_op(sbi);
 923
 924         /* iput will drop the inode object */
 925         iput(inode);
 926 }