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