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         unsigned long long iblocks;
 204
 205         iblocks = le64_to_cpu(F2FS_INODE(node_page)->i_blocks);
 206         if (!iblocks) {
 207                 set_sbi_flag(sbi, SBI_NEED_FSCK);
 208                 f2fs_warn(sbi, "%s: corrupted inode i_blocks i_ino=%lx iblocks=%llu, run fsck to fix.",
 209                           __func__, inode->i_ino, iblocks);
 210                 return false;
 211         }
 212
 213         if (ino_of_node(node_page) != nid_of_node(node_page)) {
 214                 set_sbi_flag(sbi, SBI_NEED_FSCK);
 215                 f2fs_warn(sbi, "%s: corrupted inode footer i_ino=%lx, ino,nid: [%u, %u] run fsck to fix.",
 216                           __func__, inode->i_ino,
 217                           ino_of_node(node_page), nid_of_node(node_page));
 218                 return false;
 219         }
 220
 221         if (f2fs_sb_has_flexible_inline_xattr(sbi)
 222                         && !f2fs_has_extra_attr(inode)) {
 223                 set_sbi_flag(sbi, SBI_NEED_FSCK);
 224                 f2fs_warn(sbi, "%s: corrupted inode ino=%lx, run fsck to fix.",
 225                           __func__, inode->i_ino);
 226                 return false;
 227         }
 228
 229         if (f2fs_has_extra_attr(inode) &&
 230                         !f2fs_sb_has_extra_attr(sbi)) {
 231                 set_sbi_flag(sbi, SBI_NEED_FSCK);
 232                 f2fs_warn(sbi, "%s: inode (ino=%lx) is with extra_attr, but extra_attr feature is off",
 233                           __func__, inode->i_ino);
 234                 return false;
 235         }
 236
 237         if (fi->i_extra_isize > F2FS_TOTAL_EXTRA_ATTR_SIZE ||
 238                         fi->i_extra_isize % sizeof(__le32)) {
 239                 set_sbi_flag(sbi, SBI_NEED_FSCK);
 240                 f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_extra_isize: %d, max: %zu",
 241                           __func__, inode->i_ino, fi->i_extra_isize,
 242                           F2FS_TOTAL_EXTRA_ATTR_SIZE);
 243                 return false;
 244         }
 245
 246         if (f2fs_has_extra_attr(inode) &&
 247                 f2fs_sb_has_flexible_inline_xattr(sbi) &&
 248                 f2fs_has_inline_xattr(inode) &&
 249                 (!fi->i_inline_xattr_size ||
 250                 fi->i_inline_xattr_size > MAX_INLINE_XATTR_SIZE)) {
 251                 set_sbi_flag(sbi, SBI_NEED_FSCK);
 252                 f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_inline_xattr_size: %d, max: %zu",
 253                           __func__, inode->i_ino, fi->i_inline_xattr_size,
 254                           MAX_INLINE_XATTR_SIZE);
 255                 return false;
 256         }
 257
 258         if (F2FS_I(inode)->extent_tree) {
 259                 struct extent_info *ei = &F2FS_I(inode)->extent_tree->largest;
 260
 261                 if (ei->len &&
 262                         (!f2fs_is_valid_blkaddr(sbi, ei->blk,
 263                                                 DATA_GENERIC_ENHANCE) ||
 264                         !f2fs_is_valid_blkaddr(sbi, ei->blk + ei->len - 1,
 265                                                 DATA_GENERIC_ENHANCE))) {
 266                         set_sbi_flag(sbi, SBI_NEED_FSCK);
 267                         f2fs_warn(sbi, "%s: inode (ino=%lx) extent info [%u, %u, %u] is incorrect, run fsck to fix",
 268                                   __func__, inode->i_ino,
 269                                   ei->blk, ei->fofs, ei->len);
 270                         return false;
 271                 }
 272         }
 273
 274         if (f2fs_has_inline_data(inode) &&
 275                         (!S_ISREG(inode->i_mode) && !S_ISLNK(inode->i_mode))) {
 276                 set_sbi_flag(sbi, SBI_NEED_FSCK);
 277                 f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_data, run fsck to fix",
 278                           __func__, inode->i_ino, inode->i_mode);
 279                 return false;
 280         }
 281
 282         if (f2fs_has_inline_dentry(inode) && !S_ISDIR(inode->i_mode)) {
 283                 set_sbi_flag(sbi, SBI_NEED_FSCK);
 284                 f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_dentry, run fsck to fix",
 285                           __func__, inode->i_ino, inode->i_mode);
 286                 return false;
 287         }
 288
 289         return true;
 290 }
 291
 292 static int do_read_inode(struct inode *inode)
 293 {
 294         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 295         struct f2fs_inode_info *fi = F2FS_I(inode);
 296         struct page *node_page;
 297         struct f2fs_inode *ri;
 298         projid_t i_projid;
 299         int err;
 300
 301         /* Check if ino is within scope */
 302         if (f2fs_check_nid_range(sbi, inode->i_ino))
 303                 return -EINVAL;
 304
 305         node_page = f2fs_get_node_page(sbi, inode->i_ino);
 306         if (IS_ERR(node_page))
 307                 return PTR_ERR(node_page);
 308
 309         ri = F2FS_INODE(node_page);
 310
 311         inode->i_mode = le16_to_cpu(ri->i_mode);
 312         i_uid_write(inode, le32_to_cpu(ri->i_uid));
 313         i_gid_write(inode, le32_to_cpu(ri->i_gid));
 314         set_nlink(inode, le32_to_cpu(ri->i_links));
 315         inode->i_size = le64_to_cpu(ri->i_size);
 316         inode->i_blocks = SECTOR_FROM_BLOCK(le64_to_cpu(ri->i_blocks) - 1);
 317
 318         inode->i_atime.tv_sec = le64_to_cpu(ri->i_atime);
 319         inode->i_ctime.tv_sec = le64_to_cpu(ri->i_ctime);
 320         inode->i_mtime.tv_sec = le64_to_cpu(ri->i_mtime);
 321         inode->i_atime.tv_nsec = le32_to_cpu(ri->i_atime_nsec);
 322         inode->i_ctime.tv_nsec = le32_to_cpu(ri->i_ctime_nsec);
 323         inode->i_mtime.tv_nsec = le32_to_cpu(ri->i_mtime_nsec);
 324         inode->i_generation = le32_to_cpu(ri->i_generation);
 325         if (S_ISDIR(inode->i_mode))
 326                 fi->i_current_depth = le32_to_cpu(ri->i_current_depth);
 327         else if (S_ISREG(inode->i_mode))
 328                 fi->i_gc_failures[GC_FAILURE_PIN] =
 329                                         le16_to_cpu(ri->i_gc_failures);
 330         fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid);
 331         fi->i_flags = le32_to_cpu(ri->i_flags);
 332         if (S_ISREG(inode->i_mode))
 333                 fi->i_flags &= ~F2FS_PROJINHERIT_FL;
 334         fi->flags = 0;
 335         fi->i_advise = ri->i_advise;
 336         fi->i_pino = le32_to_cpu(ri->i_pino);
 337         fi->i_dir_level = ri->i_dir_level;
 338
 339         if (f2fs_init_extent_tree(inode, &ri->i_ext))
 340                 set_page_dirty(node_page);
 341
 342         get_inline_info(inode, ri);
 343
 344         fi->i_extra_isize = f2fs_has_extra_attr(inode) ?
 345                                         le16_to_cpu(ri->i_extra_isize) : 0;
 346
 347         if (f2fs_sb_has_flexible_inline_xattr(sbi)) {
 348                 fi->i_inline_xattr_size = le16_to_cpu(ri->i_inline_xattr_size);
 349         } else if (f2fs_has_inline_xattr(inode) ||
 350                                 f2fs_has_inline_dentry(inode)) {
 351                 fi->i_inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
 352         } else {
 353
 354                 /*
 355                  * Previous inline data or directory always reserved 200 bytes
 356                  * in inode layout, even if inline_xattr is disabled. In order
 357                  * to keep inline_dentry's structure for backward compatibility,
 358                  * we get the space back only from inline_data.
 359                  */
 360                 fi->i_inline_xattr_size = 0;
 361         }
 362
 363         if (!sanity_check_inode(inode, node_page)) {
 364                 f2fs_put_page(node_page, 1);
 365                 return -EFSCORRUPTED;
 366         }
 367
 368         /* check data exist */
 369         if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode))
 370                 __recover_inline_status(inode, node_page);
 371
 372         /* try to recover cold bit for non-dir inode */
 373         if (!S_ISDIR(inode->i_mode) && !is_cold_node(node_page)) {
 374                 set_cold_node(node_page, false);
 375                 set_page_dirty(node_page);
 376         }
 377
 378         /* get rdev by using inline_info */
 379         __get_inode_rdev(inode, ri);
 380
 381         if (S_ISREG(inode->i_mode)) {
 382                 err = __written_first_block(sbi, ri);
 383                 if (err < 0) {
 384                         f2fs_put_page(node_page, 1);
 385                         return err;
 386                 }
 387                 if (!err)
 388                         set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN);
 389         }
 390
 391         if (!f2fs_need_inode_block_update(sbi, inode->i_ino))
 392                 fi->last_disk_size = inode->i_size;
 393
 394         if (fi->i_flags & F2FS_PROJINHERIT_FL)
 395                 set_inode_flag(inode, FI_PROJ_INHERIT);
 396
 397         if (f2fs_has_extra_attr(inode) && f2fs_sb_has_project_quota(sbi) &&
 398                         F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_projid))
 399                 i_projid = (projid_t)le32_to_cpu(ri->i_projid);
 400         else
 401                 i_projid = F2FS_DEF_PROJID;
 402         fi->i_projid = make_kprojid(&init_user_ns, i_projid);
 403
 404         if (f2fs_has_extra_attr(inode) && f2fs_sb_has_inode_crtime(sbi) &&
 405                         F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) {
 406                 fi->i_crtime.tv_sec = le64_to_cpu(ri->i_crtime);
 407                 fi->i_crtime.tv_nsec = le32_to_cpu(ri->i_crtime_nsec);
 408         }
 409
 410         F2FS_I(inode)->i_disk_time[0] = inode->i_atime;
 411         F2FS_I(inode)->i_disk_time[1] = inode->i_ctime;
 412         F2FS_I(inode)->i_disk_time[2] = inode->i_mtime;
 413         F2FS_I(inode)->i_disk_time[3] = F2FS_I(inode)->i_crtime;
 414         f2fs_put_page(node_page, 1);
 415
 416         stat_inc_inline_xattr(inode);
 417         stat_inc_inline_inode(inode);
 418         stat_inc_inline_dir(inode);
 419
 420         return 0;
 421 }
 422
 423 struct inode *f2fs_iget(struct super_block *sb, unsigned long ino)
 424 {
 425         struct f2fs_sb_info *sbi = F2FS_SB(sb);
 426         struct inode *inode;
 427         int ret = 0;
 428
 429         inode = iget_locked(sb, ino);
 430         if (!inode)
 431                 return ERR_PTR(-ENOMEM);
 432
 433         if (!(inode->i_state & I_NEW)) {
 434                 trace_f2fs_iget(inode);
 435                 return inode;
 436         }
 437         if (ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi))
 438                 goto make_now;
 439
 440         ret = do_read_inode(inode);
 441         if (ret)
 442                 goto bad_inode;
 443 make_now:
 444         if (ino == F2FS_NODE_INO(sbi)) {
 445                 inode->i_mapping->a_ops = &f2fs_node_aops;
 446                 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
 447         } else if (ino == F2FS_META_INO(sbi)) {
 448                 inode->i_mapping->a_ops = &f2fs_meta_aops;
 449                 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
 450         } else if (S_ISREG(inode->i_mode)) {
 451                 inode->i_op = &f2fs_file_inode_operations;
 452                 inode->i_fop = &f2fs_file_operations;
 453                 inode->i_mapping->a_ops = &f2fs_dblock_aops;
 454         } else if (S_ISDIR(inode->i_mode)) {
 455                 inode->i_op = &f2fs_dir_inode_operations;
 456                 inode->i_fop = &f2fs_dir_operations;
 457                 inode->i_mapping->a_ops = &f2fs_dblock_aops;
 458                 inode_nohighmem(inode);
 459         } else if (S_ISLNK(inode->i_mode)) {
 460                 if (file_is_encrypt(inode))
 461                         inode->i_op = &f2fs_encrypted_symlink_inode_operations;
 462                 else
 463                         inode->i_op = &f2fs_symlink_inode_operations;
 464                 inode_nohighmem(inode);
 465                 inode->i_mapping->a_ops = &f2fs_dblock_aops;
 466         } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
 467                         S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
 468                 inode->i_op = &f2fs_special_inode_operations;
 469                 init_special_inode(inode, inode->i_mode, inode->i_rdev);
 470         } else {
 471                 ret = -EIO;
 472                 goto bad_inode;
 473         }
 474         f2fs_set_inode_flags(inode);
 475         unlock_new_inode(inode);
 476         trace_f2fs_iget(inode);
 477         return inode;
 478
 479 bad_inode:
 480         f2fs_inode_synced(inode);
 481         iget_failed(inode);
 482         trace_f2fs_iget_exit(inode, ret);
 483         return ERR_PTR(ret);
 484 }
 485
 486 struct inode *f2fs_iget_retry(struct super_block *sb, unsigned long ino)
 487 {
 488         struct inode *inode;
 489 retry:
 490         inode = f2fs_iget(sb, ino);
 491         if (IS_ERR(inode)) {
 492                 if (PTR_ERR(inode) == -ENOMEM) {
 493                         congestion_wait(BLK_RW_ASYNC, HZ/50);
 494                         goto retry;
 495                 }
 496         }
 497         return inode;
 498 }
 499
 500 void f2fs_update_inode(struct inode *inode, struct page *node_page)
 501 {
 502         struct f2fs_inode *ri;
 503         struct extent_tree *et = F2FS_I(inode)->extent_tree;
 504
 505         f2fs_wait_on_page_writeback(node_page, NODE, true, true);
 506         set_page_dirty(node_page);
 507
 508         f2fs_inode_synced(inode);
 509
 510         ri = F2FS_INODE(node_page);
 511
 512         ri->i_mode = cpu_to_le16(inode->i_mode);
 513         ri->i_advise = F2FS_I(inode)->i_advise;
 514         ri->i_uid = cpu_to_le32(i_uid_read(inode));
 515         ri->i_gid = cpu_to_le32(i_gid_read(inode));
 516         ri->i_links = cpu_to_le32(inode->i_nlink);
 517         ri->i_size = cpu_to_le64(i_size_read(inode));
 518         ri->i_blocks = cpu_to_le64(SECTOR_TO_BLOCK(inode->i_blocks) + 1);
 519
 520         if (et) {
 521                 read_lock(&et->lock);
 522                 set_raw_extent(&et->largest, &ri->i_ext);
 523                 read_unlock(&et->lock);
 524         } else {
 525                 memset(&ri->i_ext, 0, sizeof(ri->i_ext));
 526         }
 527         set_raw_inline(inode, ri);
 528
 529         ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec);
 530         ri->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
 531         ri->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec);
 532         ri->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec);
 533         ri->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
 534         ri->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec);
 535         if (S_ISDIR(inode->i_mode))
 536                 ri->i_current_depth =
 537                         cpu_to_le32(F2FS_I(inode)->i_current_depth);
 538         else if (S_ISREG(inode->i_mode))
 539                 ri->i_gc_failures =
 540                         cpu_to_le16(F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN]);
 541         ri->i_xattr_nid = cpu_to_le32(F2FS_I(inode)->i_xattr_nid);
 542         ri->i_flags = cpu_to_le32(F2FS_I(inode)->i_flags);
 543         ri->i_pino = cpu_to_le32(F2FS_I(inode)->i_pino);
 544         ri->i_generation = cpu_to_le32(inode->i_generation);
 545         ri->i_dir_level = F2FS_I(inode)->i_dir_level;
 546
 547         if (f2fs_has_extra_attr(inode)) {
 548                 ri->i_extra_isize = cpu_to_le16(F2FS_I(inode)->i_extra_isize);
 549
 550                 if (f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(inode)))
 551                         ri->i_inline_xattr_size =
 552                                 cpu_to_le16(F2FS_I(inode)->i_inline_xattr_size);
 553
 554                 if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)) &&
 555                         F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
 556                                                                 i_projid)) {
 557                         projid_t i_projid;
 558
 559                         i_projid = from_kprojid(&init_user_ns,
 560                                                 F2FS_I(inode)->i_projid);
 561                         ri->i_projid = cpu_to_le32(i_projid);
 562                 }
 563
 564                 if (f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)) &&
 565                         F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
 566                                                                 i_crtime)) {
 567                         ri->i_crtime =
 568                                 cpu_to_le64(F2FS_I(inode)->i_crtime.tv_sec);
 569                         ri->i_crtime_nsec =
 570                                 cpu_to_le32(F2FS_I(inode)->i_crtime.tv_nsec);
 571                 }
 572         }
 573
 574         __set_inode_rdev(inode, ri);
 575
 576         /* deleted inode */
 577         if (inode->i_nlink == 0)
 578                 clear_inline_node(node_page);
 579
 580         F2FS_I(inode)->i_disk_time[0] = inode->i_atime;
 581         F2FS_I(inode)->i_disk_time[1] = inode->i_ctime;
 582         F2FS_I(inode)->i_disk_time[2] = inode->i_mtime;
 583         F2FS_I(inode)->i_disk_time[3] = F2FS_I(inode)->i_crtime;
 584
 585 #ifdef CONFIG_F2FS_CHECK_FS
 586         f2fs_inode_chksum_set(F2FS_I_SB(inode), node_page);
 587 #endif
 588 }
 589
 590 void f2fs_update_inode_page(struct inode *inode)
 591 {
 592         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 593         struct page *node_page;
 594 retry:
 595         node_page = f2fs_get_node_page(sbi, inode->i_ino);
 596         if (IS_ERR(node_page)) {
 597                 int err = PTR_ERR(node_page);
 598                 if (err == -ENOMEM) {
 599                         cond_resched();
 600                         goto retry;
 601                 } else if (err != -ENOENT) {
 602                         f2fs_stop_checkpoint(sbi, false);
 603                 }
 604                 return;
 605         }
 606         f2fs_update_inode(inode, node_page);
 607         f2fs_put_page(node_page, 1);
 608 }
 609
 610 int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc)
 611 {
 612         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 613
 614         if (inode->i_ino == F2FS_NODE_INO(sbi) ||
 615                         inode->i_ino == F2FS_META_INO(sbi))
 616                 return 0;
 617
 618         /*
 619          * atime could be updated without dirtying f2fs inode in lazytime mode
 620          */
 621         if (f2fs_is_time_consistent(inode) &&
 622                 !is_inode_flag_set(inode, FI_DIRTY_INODE))
 623                 return 0;
 624
 625         if (!f2fs_is_checkpoint_ready(sbi))
 626                 return -ENOSPC;
 627
 628         /*
 629          * We need to balance fs here to prevent from producing dirty node pages
 630          * during the urgent cleaning time when runing out of free sections.
 631          */
 632         f2fs_update_inode_page(inode);
 633         if (wbc && wbc->nr_to_write)
 634                 f2fs_balance_fs(sbi, true);
 635         return 0;
 636 }
 637
 638 /*
 639  * Called at the last iput() if i_nlink is zero
 640  */
 641 void f2fs_evict_inode(struct inode *inode)
 642 {
 643         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 644         nid_t xnid = F2FS_I(inode)->i_xattr_nid;
 645         int err = 0;
 646
 647         /* some remained atomic pages should discarded */
 648         if (f2fs_is_atomic_file(inode))
 649                 f2fs_drop_inmem_pages(inode);
 650
 651         trace_f2fs_evict_inode(inode);
 652         truncate_inode_pages_final(&inode->i_data);
 653
 654         if (inode->i_ino == F2FS_NODE_INO(sbi) ||
 655                         inode->i_ino == F2FS_META_INO(sbi))
 656                 goto out_clear;
 657
 658         f2fs_bug_on(sbi, get_dirty_pages(inode));
 659         f2fs_remove_dirty_inode(inode);
 660
 661         f2fs_destroy_extent_tree(inode);
 662
 663         if (inode->i_nlink || is_bad_inode(inode))
 664                 goto no_delete;
 665
 666         err = dquot_initialize(inode);
 667         if (err) {
 668                 err = 0;
 669                 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
 670         }
 671
 672         f2fs_remove_ino_entry(sbi, inode->i_ino, APPEND_INO);
 673         f2fs_remove_ino_entry(sbi, inode->i_ino, UPDATE_INO);
 674         f2fs_remove_ino_entry(sbi, inode->i_ino, FLUSH_INO);
 675
 676         sb_start_intwrite(inode->i_sb);
 677         set_inode_flag(inode, FI_NO_ALLOC);
 678         i_size_write(inode, 0);
 679 retry:
 680         if (F2FS_HAS_BLOCKS(inode))
 681                 err = f2fs_truncate(inode);
 682
 683         if (time_to_inject(sbi, FAULT_EVICT_INODE)) {
 684                 f2fs_show_injection_info(sbi, FAULT_EVICT_INODE);
 685                 err = -EIO;
 686         }
 687
 688         if (!err) {
 689                 f2fs_lock_op(sbi);
 690                 err = f2fs_remove_inode_page(inode);
 691                 f2fs_unlock_op(sbi);
 692                 if (err == -ENOENT)
 693                         err = 0;
 694         }
 695
 696         /* give more chances, if ENOMEM case */
 697         if (err == -ENOMEM) {
 698                 err = 0;
 699                 goto retry;
 700         }
 701
 702         if (err) {
 703                 f2fs_update_inode_page(inode);
 704                 if (dquot_initialize_needed(inode))
 705                         set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
 706         }
 707         sb_end_intwrite(inode->i_sb);
 708 no_delete:
 709         dquot_drop(inode);
 710
 711         stat_dec_inline_xattr(inode);
 712         stat_dec_inline_dir(inode);
 713         stat_dec_inline_inode(inode);
 714
 715         if (likely(!f2fs_cp_error(sbi) &&
 716                                 !is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
 717                 f2fs_bug_on(sbi, is_inode_flag_set(inode, FI_DIRTY_INODE));
 718         else
 719                 f2fs_inode_synced(inode);
 720
 721         /* ino == 0, if f2fs_new_inode() was failed t*/
 722         if (inode->i_ino)
 723                 invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino,
 724                                                         inode->i_ino);
 725         if (xnid)
 726                 invalidate_mapping_pages(NODE_MAPPING(sbi), xnid, xnid);
 727         if (inode->i_nlink) {
 728                 if (is_inode_flag_set(inode, FI_APPEND_WRITE))
 729                         f2fs_add_ino_entry(sbi, inode->i_ino, APPEND_INO);
 730                 if (is_inode_flag_set(inode, FI_UPDATE_WRITE))
 731                         f2fs_add_ino_entry(sbi, inode->i_ino, UPDATE_INO);
 732         }
 733         if (is_inode_flag_set(inode, FI_FREE_NID)) {
 734                 f2fs_alloc_nid_failed(sbi, inode->i_ino);
 735                 clear_inode_flag(inode, FI_FREE_NID);
 736         } else {
 737                 /*
 738                  * If xattr nid is corrupted, we can reach out error condition,
 739                  * err & !f2fs_exist_written_data(sbi, inode->i_ino, ORPHAN_INO)).
 740                  * In that case, f2fs_check_nid_range() is enough to give a clue.
 741                  */
 742         }
 743 out_clear:
 744         fscrypt_put_encryption_info(inode);
 745         fsverity_cleanup_inode(inode);
 746         clear_inode(inode);
 747 }
 748
 749 /* caller should call f2fs_lock_op() */
 750 void f2fs_handle_failed_inode(struct inode *inode)
 751 {
 752         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 753         struct node_info ni;
 754         int err;
 755
 756         /*
 757          * clear nlink of inode in order to release resource of inode
 758          * immediately.
 759          */
 760         clear_nlink(inode);
 761
 762         /*
 763          * we must call this to avoid inode being remained as dirty, resulting
 764          * in a panic when flushing dirty inodes in gdirty_list.
 765          */
 766         f2fs_update_inode_page(inode);
 767         f2fs_inode_synced(inode);
 768
 769         /* don't make bad inode, since it becomes a regular file. */
 770         unlock_new_inode(inode);
 771
 772         /*
 773          * Note: we should add inode to orphan list before f2fs_unlock_op()
 774          * so we can prevent losing this orphan when encoutering checkpoint
 775          * and following suddenly power-off.
 776          */
 777         err = f2fs_get_node_info(sbi, inode->i_ino, &ni);
 778         if (err) {
 779                 set_sbi_flag(sbi, SBI_NEED_FSCK);
 780                 f2fs_warn(sbi, "May loss orphan inode, run fsck to fix.");
 781                 goto out;
 782         }
 783
 784         if (ni.blk_addr != NULL_ADDR) {
 785                 err = f2fs_acquire_orphan_inode(sbi);
 786                 if (err) {
 787                         set_sbi_flag(sbi, SBI_NEED_FSCK);
 788                         f2fs_warn(sbi, "Too many orphan inodes, run fsck to fix.");
 789                 } else {
 790                         f2fs_add_orphan_inode(inode);
 791                 }
 792                 f2fs_alloc_nid_done(sbi, inode->i_ino);
 793         } else {
 794                 set_inode_flag(inode, FI_FREE_NID);
 795         }
 796
 797 out:
 798         f2fs_unlock_op(sbi);
 799
 800         /* iput will drop the inode object */
 801         iput(inode);
 802 }