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 page *node_page)
  63 {
  64         __le32 *addr = get_dnode_addr(inode, node_page);
  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 (addr[0])
  69                         inode->i_rdev = old_decode_dev(le32_to_cpu(addr[0]));
  70                 else
  71                         inode->i_rdev = new_decode_dev(le32_to_cpu(addr[1]));
  72         }
  73 }
  74
  75 static void __set_inode_rdev(struct inode *inode, struct page *node_page)
  76 {
  77         __le32 *addr = get_dnode_addr(inode, node_page);
  78
  79         if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {
  80                 if (old_valid_dev(inode->i_rdev)) {
  81                         addr[0] = cpu_to_le32(old_encode_dev(inode->i_rdev));
  82                         addr[1] = 0;
  83                 } else {
  84                         addr[0] = 0;
  85                         addr[1] = cpu_to_le32(new_encode_dev(inode->i_rdev));
  86                         addr[2] = 0;
  87                 }
  88         }
  89 }
  90
  91 static void __recover_inline_status(struct inode *inode, struct page *ipage)
  92 {
  93         void *inline_data = inline_data_addr(inode, ipage);
  94         __le32 *start = inline_data;
  95         __le32 *end = start + MAX_INLINE_DATA(inode) / sizeof(__le32);
  96
  97         while (start < end) {
  98                 if (*start++) {
  99                         f2fs_wait_on_page_writeback(ipage, NODE, true, true);
 100
 101                         set_inode_flag(inode, FI_DATA_EXIST);
 102                         set_raw_inline(inode, F2FS_INODE(ipage));
 103                         set_page_dirty(ipage);
 104                         return;
 105                 }
 106         }
 107         return;
 108 }
 109
 110 static bool f2fs_enable_inode_chksum(struct f2fs_sb_info *sbi, struct page *page)
 111 {
 112         struct f2fs_inode *ri = &F2FS_NODE(page)->i;
 113
 114         if (!f2fs_sb_has_inode_chksum(sbi))
 115                 return false;
 116
 117         if (!IS_INODE(page) || !(ri->i_inline & F2FS_EXTRA_ATTR))
 118                 return false;
 119
 120         if (!F2FS_FITS_IN_INODE(ri, le16_to_cpu(ri->i_extra_isize),
 121                                 i_inode_checksum))
 122                 return false;
 123
 124         return true;
 125 }
 126
 127 static __u32 f2fs_inode_chksum(struct f2fs_sb_info *sbi, struct page *page)
 128 {
 129         struct f2fs_node *node = F2FS_NODE(page);
 130         struct f2fs_inode *ri = &node->i;
 131         __le32 ino = node->footer.ino;
 132         __le32 gen = ri->i_generation;
 133         __u32 chksum, chksum_seed;
 134         __u32 dummy_cs = 0;
 135         unsigned int offset = offsetof(struct f2fs_inode, i_inode_checksum);
 136         unsigned int cs_size = sizeof(dummy_cs);
 137
 138         chksum = f2fs_chksum(sbi, sbi->s_chksum_seed, (__u8 *)&ino,
 139                                                         sizeof(ino));
 140         chksum_seed = f2fs_chksum(sbi, chksum, (__u8 *)&gen, sizeof(gen));
 141
 142         chksum = f2fs_chksum(sbi, chksum_seed, (__u8 *)ri, offset);
 143         chksum = f2fs_chksum(sbi, chksum, (__u8 *)&dummy_cs, cs_size);
 144         offset += cs_size;
 145         chksum = f2fs_chksum(sbi, chksum, (__u8 *)ri + offset,
 146                                                 F2FS_BLKSIZE - offset);
 147         return chksum;
 148 }
 149
 150 bool f2fs_inode_chksum_verify(struct f2fs_sb_info *sbi, struct page *page)
 151 {
 152         struct f2fs_inode *ri;
 153         __u32 provided, calculated;
 154
 155         if (unlikely(is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN)))
 156                 return true;
 157
 158 #ifdef CONFIG_F2FS_CHECK_FS
 159         if (!f2fs_enable_inode_chksum(sbi, page))
 160 #else
 161         if (!f2fs_enable_inode_chksum(sbi, page) ||
 162                         PageDirty(page) || PageWriteback(page))
 163 #endif
 164                 return true;
 165
 166         ri = &F2FS_NODE(page)->i;
 167         provided = le32_to_cpu(ri->i_inode_checksum);
 168         calculated = f2fs_inode_chksum(sbi, page);
 169
 170         if (provided != calculated)
 171                 f2fs_warn(sbi, "checksum invalid, nid = %lu, ino_of_node = %x, %x vs. %x",
 172                           page->index, ino_of_node(page), provided, calculated);
 173
 174         return provided == calculated;
 175 }
 176
 177 void f2fs_inode_chksum_set(struct f2fs_sb_info *sbi, struct page *page)
 178 {
 179         struct f2fs_inode *ri = &F2FS_NODE(page)->i;
 180
 181         if (!f2fs_enable_inode_chksum(sbi, page))
 182                 return;
 183
 184         ri->i_inode_checksum = cpu_to_le32(f2fs_inode_chksum(sbi, page));
 185 }
 186
 187 static bool sanity_check_inode(struct inode *inode, struct page *node_page)
 188 {
 189         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 190         struct f2fs_inode_info *fi = F2FS_I(inode);
 191         struct f2fs_inode *ri = F2FS_INODE(node_page);
 192         unsigned long long iblocks;
 193
 194         iblocks = le64_to_cpu(F2FS_INODE(node_page)->i_blocks);
 195         if (!iblocks) {
 196                 set_sbi_flag(sbi, SBI_NEED_FSCK);
 197                 f2fs_warn(sbi, "%s: corrupted inode i_blocks i_ino=%lx iblocks=%llu, run fsck to fix.",
 198                           __func__, inode->i_ino, iblocks);
 199                 return false;
 200         }
 201
 202         if (ino_of_node(node_page) != nid_of_node(node_page)) {
 203                 set_sbi_flag(sbi, SBI_NEED_FSCK);
 204                 f2fs_warn(sbi, "%s: corrupted inode footer i_ino=%lx, ino,nid: [%u, %u] run fsck to fix.",
 205                           __func__, inode->i_ino,
 206                           ino_of_node(node_page), nid_of_node(node_page));
 207                 return false;
 208         }
 209
 210         if (f2fs_sb_has_flexible_inline_xattr(sbi)
 211                         && !f2fs_has_extra_attr(inode)) {
 212                 set_sbi_flag(sbi, SBI_NEED_FSCK);
 213                 f2fs_warn(sbi, "%s: corrupted inode ino=%lx, run fsck to fix.",
 214                           __func__, inode->i_ino);
 215                 return false;
 216         }
 217
 218         if (f2fs_has_extra_attr(inode) &&
 219                         !f2fs_sb_has_extra_attr(sbi)) {
 220                 set_sbi_flag(sbi, SBI_NEED_FSCK);
 221                 f2fs_warn(sbi, "%s: inode (ino=%lx) is with extra_attr, but extra_attr feature is off",
 222                           __func__, inode->i_ino);
 223                 return false;
 224         }
 225
 226         if (fi->i_extra_isize > F2FS_TOTAL_EXTRA_ATTR_SIZE ||
 227                         fi->i_extra_isize % sizeof(__le32)) {
 228                 set_sbi_flag(sbi, SBI_NEED_FSCK);
 229                 f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_extra_isize: %d, max: %zu",
 230                           __func__, inode->i_ino, fi->i_extra_isize,
 231                           F2FS_TOTAL_EXTRA_ATTR_SIZE);
 232                 return false;
 233         }
 234
 235         if (f2fs_has_extra_attr(inode) &&
 236                 f2fs_sb_has_flexible_inline_xattr(sbi) &&
 237                 f2fs_has_inline_xattr(inode) &&
 238                 (!fi->i_inline_xattr_size ||
 239                 fi->i_inline_xattr_size > MAX_INLINE_XATTR_SIZE)) {
 240                 set_sbi_flag(sbi, SBI_NEED_FSCK);
 241                 f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_inline_xattr_size: %d, max: %zu",
 242                           __func__, inode->i_ino, fi->i_inline_xattr_size,
 243                           MAX_INLINE_XATTR_SIZE);
 244                 return false;
 245         }
 246
 247         if (f2fs_sanity_check_inline_data(inode)) {
 248                 set_sbi_flag(sbi, SBI_NEED_FSCK);
 249                 f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_data, run fsck to fix",
 250                           __func__, inode->i_ino, inode->i_mode);
 251                 return false;
 252         }
 253
 254         if (f2fs_has_inline_dentry(inode) && !S_ISDIR(inode->i_mode)) {
 255                 set_sbi_flag(sbi, SBI_NEED_FSCK);
 256                 f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_dentry, run fsck to fix",
 257                           __func__, inode->i_ino, inode->i_mode);
 258                 return false;
 259         }
 260
 261         if ((fi->i_flags & F2FS_CASEFOLD_FL) && !f2fs_sb_has_casefold(sbi)) {
 262                 set_sbi_flag(sbi, SBI_NEED_FSCK);
 263                 f2fs_warn(sbi, "%s: inode (ino=%lx) has casefold flag, but casefold feature is off",
 264                           __func__, inode->i_ino);
 265                 return false;
 266         }
 267
 268         if (f2fs_has_extra_attr(inode) && f2fs_sb_has_compression(sbi) &&
 269                         fi->i_flags & F2FS_COMPR_FL &&
 270                         F2FS_FITS_IN_INODE(ri, fi->i_extra_isize,
 271                                                 i_log_cluster_size)) {
 272                 if (ri->i_compress_algorithm >= COMPRESS_MAX) {
 273                         set_sbi_flag(sbi, SBI_NEED_FSCK);
 274                         f2fs_warn(sbi, "%s: inode (ino=%lx) has unsupported "
 275                                 "compress algorithm: %u, run fsck to fix",
 276                                   __func__, inode->i_ino,
 277                                   ri->i_compress_algorithm);
 278                         return false;
 279                 }
 280                 if (le64_to_cpu(ri->i_compr_blocks) >
 281                                 SECTOR_TO_BLOCK(inode->i_blocks)) {
 282                         set_sbi_flag(sbi, SBI_NEED_FSCK);
 283                         f2fs_warn(sbi, "%s: inode (ino=%lx) has inconsistent "
 284                                 "i_compr_blocks:%llu, i_blocks:%llu, run fsck to fix",
 285                                   __func__, inode->i_ino,
 286                                   le64_to_cpu(ri->i_compr_blocks),
 287                                   SECTOR_TO_BLOCK(inode->i_blocks));
 288                         return false;
 289                 }
 290                 if (ri->i_log_cluster_size < MIN_COMPRESS_LOG_SIZE ||
 291                         ri->i_log_cluster_size > MAX_COMPRESS_LOG_SIZE) {
 292                         set_sbi_flag(sbi, SBI_NEED_FSCK);
 293                         f2fs_warn(sbi, "%s: inode (ino=%lx) has unsupported "
 294                                 "log cluster size: %u, run fsck to fix",
 295                                   __func__, inode->i_ino,
 296                                   ri->i_log_cluster_size);
 297                         return false;
 298                 }
 299         }
 300
 301         return true;
 302 }
 303
 304 static void init_idisk_time(struct inode *inode)
 305 {
 306         struct f2fs_inode_info *fi = F2FS_I(inode);
 307
 308         fi->i_disk_time[0] = inode->i_atime;
 309         fi->i_disk_time[1] = inode->i_ctime;
 310         fi->i_disk_time[2] = inode->i_mtime;
 311         fi->i_disk_time[3] = fi->i_crtime;
 312 }
 313
 314 static int do_read_inode(struct inode *inode)
 315 {
 316         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 317         struct f2fs_inode_info *fi = F2FS_I(inode);
 318         struct page *node_page;
 319         struct f2fs_inode *ri;
 320         projid_t i_projid;
 321
 322         /* Check if ino is within scope */
 323         if (f2fs_check_nid_range(sbi, inode->i_ino))
 324                 return -EINVAL;
 325
 326         node_page = f2fs_get_node_page(sbi, inode->i_ino);
 327         if (IS_ERR(node_page))
 328                 return PTR_ERR(node_page);
 329
 330         ri = F2FS_INODE(node_page);
 331
 332         inode->i_mode = le16_to_cpu(ri->i_mode);
 333         i_uid_write(inode, le32_to_cpu(ri->i_uid));
 334         i_gid_write(inode, le32_to_cpu(ri->i_gid));
 335         set_nlink(inode, le32_to_cpu(ri->i_links));
 336         inode->i_size = le64_to_cpu(ri->i_size);
 337         inode->i_blocks = SECTOR_FROM_BLOCK(le64_to_cpu(ri->i_blocks) - 1);
 338
 339         inode->i_atime.tv_sec = le64_to_cpu(ri->i_atime);
 340         inode->i_ctime.tv_sec = le64_to_cpu(ri->i_ctime);
 341         inode->i_mtime.tv_sec = le64_to_cpu(ri->i_mtime);
 342         inode->i_atime.tv_nsec = le32_to_cpu(ri->i_atime_nsec);
 343         inode->i_ctime.tv_nsec = le32_to_cpu(ri->i_ctime_nsec);
 344         inode->i_mtime.tv_nsec = le32_to_cpu(ri->i_mtime_nsec);
 345         inode->i_generation = le32_to_cpu(ri->i_generation);
 346         if (S_ISDIR(inode->i_mode))
 347                 fi->i_current_depth = le32_to_cpu(ri->i_current_depth);
 348         else if (S_ISREG(inode->i_mode))
 349                 fi->i_gc_failures[GC_FAILURE_PIN] =
 350                                         le16_to_cpu(ri->i_gc_failures);
 351         fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid);
 352         fi->i_flags = le32_to_cpu(ri->i_flags);
 353         if (S_ISREG(inode->i_mode))
 354                 fi->i_flags &= ~F2FS_PROJINHERIT_FL;
 355         bitmap_zero(fi->flags, FI_MAX);
 356         fi->i_advise = ri->i_advise;
 357         fi->i_pino = le32_to_cpu(ri->i_pino);
 358         fi->i_dir_level = ri->i_dir_level;
 359
 360         get_inline_info(inode, ri);
 361
 362         fi->i_extra_isize = f2fs_has_extra_attr(inode) ?
 363                                         le16_to_cpu(ri->i_extra_isize) : 0;
 364
 365         if (f2fs_sb_has_flexible_inline_xattr(sbi)) {
 366                 fi->i_inline_xattr_size = le16_to_cpu(ri->i_inline_xattr_size);
 367         } else if (f2fs_has_inline_xattr(inode) ||
 368                                 f2fs_has_inline_dentry(inode)) {
 369                 fi->i_inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
 370         } else {
 371
 372                 /*
 373                  * Previous inline data or directory always reserved 200 bytes
 374                  * in inode layout, even if inline_xattr is disabled. In order
 375                  * to keep inline_dentry's structure for backward compatibility,
 376                  * we get the space back only from inline_data.
 377                  */
 378                 fi->i_inline_xattr_size = 0;
 379         }
 380
 381         if (!sanity_check_inode(inode, node_page)) {
 382                 f2fs_put_page(node_page, 1);
 383                 f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE);
 384                 return -EFSCORRUPTED;
 385         }
 386
 387         /* check data exist */
 388         if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode))
 389                 __recover_inline_status(inode, node_page);
 390
 391         /* try to recover cold bit for non-dir inode */
 392         if (!S_ISDIR(inode->i_mode) && !is_cold_node(node_page)) {
 393                 f2fs_wait_on_page_writeback(node_page, NODE, true, true);
 394                 set_cold_node(node_page, false);
 395                 set_page_dirty(node_page);
 396         }
 397
 398         /* get rdev by using inline_info */
 399         __get_inode_rdev(inode, node_page);
 400
 401         if (!f2fs_need_inode_block_update(sbi, inode->i_ino))
 402                 fi->last_disk_size = inode->i_size;
 403
 404         if (fi->i_flags & F2FS_PROJINHERIT_FL)
 405                 set_inode_flag(inode, FI_PROJ_INHERIT);
 406
 407         if (f2fs_has_extra_attr(inode) && f2fs_sb_has_project_quota(sbi) &&
 408                         F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_projid))
 409                 i_projid = (projid_t)le32_to_cpu(ri->i_projid);
 410         else
 411                 i_projid = F2FS_DEF_PROJID;
 412         fi->i_projid = make_kprojid(&init_user_ns, i_projid);
 413
 414         if (f2fs_has_extra_attr(inode) && f2fs_sb_has_inode_crtime(sbi) &&
 415                         F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) {
 416                 fi->i_crtime.tv_sec = le64_to_cpu(ri->i_crtime);
 417                 fi->i_crtime.tv_nsec = le32_to_cpu(ri->i_crtime_nsec);
 418         }
 419
 420         if (f2fs_has_extra_attr(inode) && f2fs_sb_has_compression(sbi) &&
 421                                         (fi->i_flags & F2FS_COMPR_FL)) {
 422                 if (F2FS_FITS_IN_INODE(ri, fi->i_extra_isize,
 423                                         i_log_cluster_size)) {
 424                         unsigned short compress_flag;
 425
 426                         atomic_set(&fi->i_compr_blocks,
 427                                         le64_to_cpu(ri->i_compr_blocks));
 428                         fi->i_compress_algorithm = ri->i_compress_algorithm;
 429                         fi->i_log_cluster_size = ri->i_log_cluster_size;
 430                         compress_flag = le16_to_cpu(ri->i_compress_flag);
 431                         fi->i_compress_level = compress_flag >>
 432                                                 COMPRESS_LEVEL_OFFSET;
 433                         fi->i_compress_flag = compress_flag &
 434                                         GENMASK(COMPRESS_LEVEL_OFFSET - 1, 0);
 435                         fi->i_cluster_size = BIT(fi->i_log_cluster_size);
 436                         set_inode_flag(inode, FI_COMPRESSED_FILE);
 437                 }
 438         }
 439
 440         init_idisk_time(inode);
 441
 442         /* Need all the flag bits */
 443         f2fs_init_read_extent_tree(inode, node_page);
 444
 445         if (!sanity_check_extent_cache(inode)) {
 446                 f2fs_put_page(node_page, 1);
 447                 f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE);
 448                 return -EFSCORRUPTED;
 449         }
 450
 451         f2fs_put_page(node_page, 1);
 452
 453         stat_inc_inline_xattr(inode);
 454         stat_inc_inline_inode(inode);
 455         stat_inc_inline_dir(inode);
 456         stat_inc_compr_inode(inode);
 457         stat_add_compr_blocks(inode, atomic_read(&fi->i_compr_blocks));
 458
 459         return 0;
 460 }
 461
 462 static bool is_meta_ino(struct f2fs_sb_info *sbi, unsigned int ino)
 463 {
 464         return ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi) ||
 465                 ino == F2FS_COMPRESS_INO(sbi);
 466 }
 467
 468 struct inode *f2fs_iget(struct super_block *sb, unsigned long ino)
 469 {
 470         struct f2fs_sb_info *sbi = F2FS_SB(sb);
 471         struct inode *inode;
 472         int ret = 0;
 473
 474         inode = iget_locked(sb, ino);
 475         if (!inode)
 476                 return ERR_PTR(-ENOMEM);
 477
 478         if (!(inode->i_state & I_NEW)) {
 479                 if (is_meta_ino(sbi, ino)) {
 480                         f2fs_err(sbi, "inaccessible inode: %lu, run fsck to repair", ino);
 481                         set_sbi_flag(sbi, SBI_NEED_FSCK);
 482                         ret = -EFSCORRUPTED;
 483                         trace_f2fs_iget_exit(inode, ret);
 484                         iput(inode);
 485                         f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE);
 486                         return ERR_PTR(ret);
 487                 }
 488
 489                 trace_f2fs_iget(inode);
 490                 return inode;
 491         }
 492
 493         if (is_meta_ino(sbi, ino))
 494                 goto make_now;
 495
 496         ret = do_read_inode(inode);
 497         if (ret)
 498                 goto bad_inode;
 499 make_now:
 500         if (ino == F2FS_NODE_INO(sbi)) {
 501                 inode->i_mapping->a_ops = &f2fs_node_aops;
 502                 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
 503         } else if (ino == F2FS_META_INO(sbi)) {
 504                 inode->i_mapping->a_ops = &f2fs_meta_aops;
 505                 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
 506         } else if (ino == F2FS_COMPRESS_INO(sbi)) {
 507 #ifdef CONFIG_F2FS_FS_COMPRESSION
 508                 inode->i_mapping->a_ops = &f2fs_compress_aops;
 509                 /*
 510                  * generic_error_remove_page only truncates pages of regular
 511                  * inode
 512                  */
 513                 inode->i_mode |= S_IFREG;
 514 #endif
 515                 mapping_set_gfp_mask(inode->i_mapping,
 516                         GFP_NOFS | __GFP_HIGHMEM | __GFP_MOVABLE);
 517         } else if (S_ISREG(inode->i_mode)) {
 518                 inode->i_op = &f2fs_file_inode_operations;
 519                 inode->i_fop = &f2fs_file_operations;
 520                 inode->i_mapping->a_ops = &f2fs_dblock_aops;
 521         } else if (S_ISDIR(inode->i_mode)) {
 522                 inode->i_op = &f2fs_dir_inode_operations;
 523                 inode->i_fop = &f2fs_dir_operations;
 524                 inode->i_mapping->a_ops = &f2fs_dblock_aops;
 525                 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
 526         } else if (S_ISLNK(inode->i_mode)) {
 527                 if (file_is_encrypt(inode))
 528                         inode->i_op = &f2fs_encrypted_symlink_inode_operations;
 529                 else
 530                         inode->i_op = &f2fs_symlink_inode_operations;
 531                 inode_nohighmem(inode);
 532                 inode->i_mapping->a_ops = &f2fs_dblock_aops;
 533         } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
 534                         S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
 535                 inode->i_op = &f2fs_special_inode_operations;
 536                 init_special_inode(inode, inode->i_mode, inode->i_rdev);
 537         } else {
 538                 ret = -EIO;
 539                 goto bad_inode;
 540         }
 541         f2fs_set_inode_flags(inode);
 542
 543         if (file_should_truncate(inode) &&
 544                         !is_sbi_flag_set(sbi, SBI_POR_DOING)) {
 545                 ret = f2fs_truncate(inode);
 546                 if (ret)
 547                         goto bad_inode;
 548                 file_dont_truncate(inode);
 549         }
 550
 551         unlock_new_inode(inode);
 552         trace_f2fs_iget(inode);
 553         return inode;
 554
 555 bad_inode:
 556         f2fs_inode_synced(inode);
 557         iget_failed(inode);
 558         trace_f2fs_iget_exit(inode, ret);
 559         return ERR_PTR(ret);
 560 }
 561
 562 struct inode *f2fs_iget_retry(struct super_block *sb, unsigned long ino)
 563 {
 564         struct inode *inode;
 565 retry:
 566         inode = f2fs_iget(sb, ino);
 567         if (IS_ERR(inode)) {
 568                 if (PTR_ERR(inode) == -ENOMEM) {
 569                         memalloc_retry_wait(GFP_NOFS);
 570                         goto retry;
 571                 }
 572         }
 573         return inode;
 574 }
 575
 576 void f2fs_update_inode(struct inode *inode, struct page *node_page)
 577 {
 578         struct f2fs_inode *ri;
 579         struct extent_tree *et = F2FS_I(inode)->extent_tree[EX_READ];
 580
 581         f2fs_wait_on_page_writeback(node_page, NODE, true, true);
 582         set_page_dirty(node_page);
 583
 584         f2fs_inode_synced(inode);
 585
 586         ri = F2FS_INODE(node_page);
 587
 588         ri->i_mode = cpu_to_le16(inode->i_mode);
 589         ri->i_advise = F2FS_I(inode)->i_advise;
 590         ri->i_uid = cpu_to_le32(i_uid_read(inode));
 591         ri->i_gid = cpu_to_le32(i_gid_read(inode));
 592         ri->i_links = cpu_to_le32(inode->i_nlink);
 593         ri->i_blocks = cpu_to_le64(SECTOR_TO_BLOCK(inode->i_blocks) + 1);
 594
 595         if (!f2fs_is_atomic_file(inode) ||
 596                         is_inode_flag_set(inode, FI_ATOMIC_COMMITTED))
 597                 ri->i_size = cpu_to_le64(i_size_read(inode));
 598
 599         if (et) {
 600                 read_lock(&et->lock);
 601                 set_raw_read_extent(&et->largest, &ri->i_ext);
 602                 read_unlock(&et->lock);
 603         } else {
 604                 memset(&ri->i_ext, 0, sizeof(ri->i_ext));
 605         }
 606         set_raw_inline(inode, ri);
 607
 608         ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec);
 609         ri->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
 610         ri->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec);
 611         ri->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec);
 612         ri->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
 613         ri->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec);
 614         if (S_ISDIR(inode->i_mode))
 615                 ri->i_current_depth =
 616                         cpu_to_le32(F2FS_I(inode)->i_current_depth);
 617         else if (S_ISREG(inode->i_mode))
 618                 ri->i_gc_failures =
 619                         cpu_to_le16(F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN]);
 620         ri->i_xattr_nid = cpu_to_le32(F2FS_I(inode)->i_xattr_nid);
 621         ri->i_flags = cpu_to_le32(F2FS_I(inode)->i_flags);
 622         ri->i_pino = cpu_to_le32(F2FS_I(inode)->i_pino);
 623         ri->i_generation = cpu_to_le32(inode->i_generation);
 624         ri->i_dir_level = F2FS_I(inode)->i_dir_level;
 625
 626         if (f2fs_has_extra_attr(inode)) {
 627                 ri->i_extra_isize = cpu_to_le16(F2FS_I(inode)->i_extra_isize);
 628
 629                 if (f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(inode)))
 630                         ri->i_inline_xattr_size =
 631                                 cpu_to_le16(F2FS_I(inode)->i_inline_xattr_size);
 632
 633                 if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)) &&
 634                         F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
 635                                                                 i_projid)) {
 636                         projid_t i_projid;
 637
 638                         i_projid = from_kprojid(&init_user_ns,
 639                                                 F2FS_I(inode)->i_projid);
 640                         ri->i_projid = cpu_to_le32(i_projid);
 641                 }
 642
 643                 if (f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)) &&
 644                         F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
 645                                                                 i_crtime)) {
 646                         ri->i_crtime =
 647                                 cpu_to_le64(F2FS_I(inode)->i_crtime.tv_sec);
 648                         ri->i_crtime_nsec =
 649                                 cpu_to_le32(F2FS_I(inode)->i_crtime.tv_nsec);
 650                 }
 651
 652                 if (f2fs_sb_has_compression(F2FS_I_SB(inode)) &&
 653                         F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
 654                                                         i_log_cluster_size)) {
 655                         unsigned short compress_flag;
 656
 657                         ri->i_compr_blocks =
 658                                 cpu_to_le64(atomic_read(
 659                                         &F2FS_I(inode)->i_compr_blocks));
 660                         ri->i_compress_algorithm =
 661                                 F2FS_I(inode)->i_compress_algorithm;
 662                         compress_flag = F2FS_I(inode)->i_compress_flag |
 663                                 F2FS_I(inode)->i_compress_level <<
 664                                                 COMPRESS_LEVEL_OFFSET;
 665                         ri->i_compress_flag = cpu_to_le16(compress_flag);
 666                         ri->i_log_cluster_size =
 667                                 F2FS_I(inode)->i_log_cluster_size;
 668                 }
 669         }
 670
 671         __set_inode_rdev(inode, node_page);
 672
 673         /* deleted inode */
 674         if (inode->i_nlink == 0)
 675                 clear_page_private_inline(node_page);
 676
 677         init_idisk_time(inode);
 678 #ifdef CONFIG_F2FS_CHECK_FS
 679         f2fs_inode_chksum_set(F2FS_I_SB(inode), node_page);
 680 #endif
 681 }
 682
 683 void f2fs_update_inode_page(struct inode *inode)
 684 {
 685         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 686         struct page *node_page;
 687         int count = 0;
 688 retry:
 689         node_page = f2fs_get_node_page(sbi, inode->i_ino);
 690         if (IS_ERR(node_page)) {
 691                 int err = PTR_ERR(node_page);
 692
 693                 /* The node block was truncated. */
 694                 if (err == -ENOENT)
 695                         return;
 696
 697                 if (err == -ENOMEM || ++count <= DEFAULT_RETRY_IO_COUNT)
 698                         goto retry;
 699                 f2fs_stop_checkpoint(sbi, false, STOP_CP_REASON_UPDATE_INODE);
 700                 return;
 701         }
 702         f2fs_update_inode(inode, node_page);
 703         f2fs_put_page(node_page, 1);
 704 }
 705
 706 int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc)
 707 {
 708         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 709
 710         if (inode->i_ino == F2FS_NODE_INO(sbi) ||
 711                         inode->i_ino == F2FS_META_INO(sbi))
 712                 return 0;
 713
 714         /*
 715          * atime could be updated without dirtying f2fs inode in lazytime mode
 716          */
 717         if (f2fs_is_time_consistent(inode) &&
 718                 !is_inode_flag_set(inode, FI_DIRTY_INODE))
 719                 return 0;
 720
 721         if (!f2fs_is_checkpoint_ready(sbi))
 722                 return -ENOSPC;
 723
 724         /*
 725          * We need to balance fs here to prevent from producing dirty node pages
 726          * during the urgent cleaning time when running out of free sections.
 727          */
 728         f2fs_update_inode_page(inode);
 729         if (wbc && wbc->nr_to_write)
 730                 f2fs_balance_fs(sbi, true);
 731         return 0;
 732 }
 733
 734 /*
 735  * Called at the last iput() if i_nlink is zero
 736  */
 737 void f2fs_evict_inode(struct inode *inode)
 738 {
 739         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 740         struct f2fs_inode_info *fi = F2FS_I(inode);
 741         nid_t xnid = fi->i_xattr_nid;
 742         int err = 0;
 743
 744         f2fs_abort_atomic_write(inode, true);
 745
 746         if (fi->cow_inode) {
 747                 clear_inode_flag(fi->cow_inode, FI_COW_FILE);
 748                 iput(fi->cow_inode);
 749                 fi->cow_inode = NULL;
 750         }
 751
 752         trace_f2fs_evict_inode(inode);
 753         truncate_inode_pages_final(&inode->i_data);
 754
 755         if ((inode->i_nlink || is_bad_inode(inode)) &&
 756                 test_opt(sbi, COMPRESS_CACHE) && f2fs_compressed_file(inode))
 757                 f2fs_invalidate_compress_pages(sbi, inode->i_ino);
 758
 759         if (inode->i_ino == F2FS_NODE_INO(sbi) ||
 760                         inode->i_ino == F2FS_META_INO(sbi) ||
 761                         inode->i_ino == F2FS_COMPRESS_INO(sbi))
 762                 goto out_clear;
 763
 764         f2fs_bug_on(sbi, get_dirty_pages(inode));
 765         f2fs_remove_dirty_inode(inode);
 766
 767         f2fs_destroy_extent_tree(inode);
 768
 769         if (inode->i_nlink || is_bad_inode(inode))
 770                 goto no_delete;
 771
 772         err = f2fs_dquot_initialize(inode);
 773         if (err) {
 774                 err = 0;
 775                 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
 776         }
 777
 778         f2fs_remove_ino_entry(sbi, inode->i_ino, APPEND_INO);
 779         f2fs_remove_ino_entry(sbi, inode->i_ino, UPDATE_INO);
 780         f2fs_remove_ino_entry(sbi, inode->i_ino, FLUSH_INO);
 781
 782         if (!is_sbi_flag_set(sbi, SBI_IS_FREEZING))
 783                 sb_start_intwrite(inode->i_sb);
 784         set_inode_flag(inode, FI_NO_ALLOC);
 785         i_size_write(inode, 0);
 786 retry:
 787         if (F2FS_HAS_BLOCKS(inode))
 788                 err = f2fs_truncate(inode);
 789
 790         if (time_to_inject(sbi, FAULT_EVICT_INODE)) {
 791                 f2fs_show_injection_info(sbi, FAULT_EVICT_INODE);
 792                 err = -EIO;
 793         }
 794
 795         if (!err) {
 796                 f2fs_lock_op(sbi);
 797                 err = f2fs_remove_inode_page(inode);
 798                 f2fs_unlock_op(sbi);
 799                 if (err == -ENOENT) {
 800                         err = 0;
 801
 802                         /*
 803                          * in fuzzed image, another node may has the same
 804                          * block address as inode's, if it was truncated
 805                          * previously, truncation of inode node will fail.
 806                          */
 807                         if (is_inode_flag_set(inode, FI_DIRTY_INODE)) {
 808                                 f2fs_warn(F2FS_I_SB(inode),
 809                                         "f2fs_evict_inode: inconsistent node id, ino:%lu",
 810                                         inode->i_ino);
 811                                 f2fs_inode_synced(inode);
 812                                 set_sbi_flag(sbi, SBI_NEED_FSCK);
 813                         }
 814                 }
 815         }
 816
 817         /* give more chances, if ENOMEM case */
 818         if (err == -ENOMEM) {
 819                 err = 0;
 820                 goto retry;
 821         }
 822
 823         if (err) {
 824                 f2fs_update_inode_page(inode);
 825                 if (dquot_initialize_needed(inode))
 826                         set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
 827         }
 828         if (!is_sbi_flag_set(sbi, SBI_IS_FREEZING))
 829                 sb_end_intwrite(inode->i_sb);
 830 no_delete:
 831         dquot_drop(inode);
 832
 833         stat_dec_inline_xattr(inode);
 834         stat_dec_inline_dir(inode);
 835         stat_dec_inline_inode(inode);
 836         stat_dec_compr_inode(inode);
 837         stat_sub_compr_blocks(inode,
 838                         atomic_read(&fi->i_compr_blocks));
 839
 840         if (likely(!f2fs_cp_error(sbi) &&
 841                                 !is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
 842                 f2fs_bug_on(sbi, is_inode_flag_set(inode, FI_DIRTY_INODE));
 843         else
 844                 f2fs_inode_synced(inode);
 845
 846         /* for the case f2fs_new_inode() was failed, .i_ino is zero, skip it */
 847         if (inode->i_ino)
 848                 invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino,
 849                                                         inode->i_ino);
 850         if (xnid)
 851                 invalidate_mapping_pages(NODE_MAPPING(sbi), xnid, xnid);
 852         if (inode->i_nlink) {
 853                 if (is_inode_flag_set(inode, FI_APPEND_WRITE))
 854                         f2fs_add_ino_entry(sbi, inode->i_ino, APPEND_INO);
 855                 if (is_inode_flag_set(inode, FI_UPDATE_WRITE))
 856                         f2fs_add_ino_entry(sbi, inode->i_ino, UPDATE_INO);
 857         }
 858         if (is_inode_flag_set(inode, FI_FREE_NID)) {
 859                 f2fs_alloc_nid_failed(sbi, inode->i_ino);
 860                 clear_inode_flag(inode, FI_FREE_NID);
 861         } else {
 862                 /*
 863                  * If xattr nid is corrupted, we can reach out error condition,
 864                  * err & !f2fs_exist_written_data(sbi, inode->i_ino, ORPHAN_INO)).
 865                  * In that case, f2fs_check_nid_range() is enough to give a clue.
 866                  */
 867         }
 868 out_clear:
 869         fscrypt_put_encryption_info(inode);
 870         fsverity_cleanup_inode(inode);
 871         clear_inode(inode);
 872 }
 873
 874 /* caller should call f2fs_lock_op() */
 875 void f2fs_handle_failed_inode(struct inode *inode)
 876 {
 877         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 878         struct node_info ni;
 879         int err;
 880
 881         /*
 882          * clear nlink of inode in order to release resource of inode
 883          * immediately.
 884          */
 885         clear_nlink(inode);
 886
 887         /*
 888          * we must call this to avoid inode being remained as dirty, resulting
 889          * in a panic when flushing dirty inodes in gdirty_list.
 890          */
 891         f2fs_update_inode_page(inode);
 892         f2fs_inode_synced(inode);
 893
 894         /* don't make bad inode, since it becomes a regular file. */
 895         unlock_new_inode(inode);
 896
 897         /*
 898          * Note: we should add inode to orphan list before f2fs_unlock_op()
 899          * so we can prevent losing this orphan when encoutering checkpoint
 900          * and following suddenly power-off.
 901          */
 902         err = f2fs_get_node_info(sbi, inode->i_ino, &ni, false);
 903         if (err) {
 904                 set_sbi_flag(sbi, SBI_NEED_FSCK);
 905                 set_inode_flag(inode, FI_FREE_NID);
 906                 f2fs_warn(sbi, "May loss orphan inode, run fsck to fix.");
 907                 goto out;
 908         }
 909
 910         if (ni.blk_addr != NULL_ADDR) {
 911                 err = f2fs_acquire_orphan_inode(sbi);
 912                 if (err) {
 913                         set_sbi_flag(sbi, SBI_NEED_FSCK);
 914                         f2fs_warn(sbi, "Too many orphan inodes, run fsck to fix.");
 915                 } else {
 916                         f2fs_add_orphan_inode(inode);
 917                 }
 918                 f2fs_alloc_nid_done(sbi, inode->i_ino);
 919         } else {
 920                 set_inode_flag(inode, FI_FREE_NID);
 921         }
 922
 923 out:
 924         f2fs_unlock_op(sbi);
 925
 926         /* iput will drop the inode object */
 927         iput(inode);
 928 }