fs/f2fs/inode.c

   1 /*
   2  * fs/f2fs/inode.c
   3  *
   4  * Copyright (c) 2012 Samsung Electronics Co., Ltd.
   5  *             http://www.samsung.com/
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  */
  11 #include <linux/fs.h>
  12 #include <linux/f2fs_fs.h>
  13 #include <linux/buffer_head.h>
  14 #include <linux/backing-dev.h>
  15 #include <linux/writeback.h>
  16
  17 #include "f2fs.h"
  18 #include "node.h"
  19 #include "segment.h"
  20
  21 #include <trace/events/f2fs.h>
  22
  23 void f2fs_mark_inode_dirty_sync(struct inode *inode, bool sync)
  24 {
  25         if (is_inode_flag_set(inode, FI_NEW_INODE))
  26                 return;
  27
  28         if (f2fs_inode_dirtied(inode, sync))
  29                 return;
  30
  31         mark_inode_dirty_sync(inode);
  32 }
  33
  34 void f2fs_set_inode_flags(struct inode *inode)
  35 {
  36         unsigned int flags = F2FS_I(inode)->i_flags;
  37         unsigned int new_fl = 0;
  38
  39         if (flags & F2FS_SYNC_FL)
  40                 new_fl |= S_SYNC;
  41         if (flags & F2FS_APPEND_FL)
  42                 new_fl |= S_APPEND;
  43         if (flags & F2FS_IMMUTABLE_FL)
  44                 new_fl |= S_IMMUTABLE;
  45         if (flags & F2FS_NOATIME_FL)
  46                 new_fl |= S_NOATIME;
  47         if (flags & F2FS_DIRSYNC_FL)
  48                 new_fl |= S_DIRSYNC;
  49         if (f2fs_encrypted_inode(inode))
  50                 new_fl |= S_ENCRYPTED;
  51         inode_set_flags(inode, new_fl,
  52                         S_SYNC|S_APPEND|S_IMMUTABLE|S_NOATIME|S_DIRSYNC|
  53                         S_ENCRYPTED);
  54 }
  55
  56 static void __get_inode_rdev(struct inode *inode, struct f2fs_inode *ri)
  57 {
  58         int extra_size = get_extra_isize(inode);
  59
  60         if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
  61                         S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
  62                 if (ri->i_addr[extra_size])
  63                         inode->i_rdev = old_decode_dev(
  64                                 le32_to_cpu(ri->i_addr[extra_size]));
  65                 else
  66                         inode->i_rdev = new_decode_dev(
  67                                 le32_to_cpu(ri->i_addr[extra_size + 1]));
  68         }
  69 }
  70
  71 static int __written_first_block(struct f2fs_sb_info *sbi,
  72                                         struct f2fs_inode *ri)
  73 {
  74         block_t addr = le32_to_cpu(ri->i_addr[offset_in_addr(ri)]);
  75
  76         if (!__is_valid_data_blkaddr(addr))
  77                 return 1;
  78         if (!f2fs_is_valid_blkaddr(sbi, addr, DATA_GENERIC))
  79                 return -EFAULT;
  80         return 0;
  81 }
  82
  83 static void __set_inode_rdev(struct inode *inode, struct f2fs_inode *ri)
  84 {
  85         int extra_size = get_extra_isize(inode);
  86
  87         if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {
  88                 if (old_valid_dev(inode->i_rdev)) {
  89                         ri->i_addr[extra_size] =
  90                                 cpu_to_le32(old_encode_dev(inode->i_rdev));
  91                         ri->i_addr[extra_size + 1] = 0;
  92                 } else {
  93                         ri->i_addr[extra_size] = 0;
  94                         ri->i_addr[extra_size + 1] =
  95                                 cpu_to_le32(new_encode_dev(inode->i_rdev));
  96                         ri->i_addr[extra_size + 2] = 0;
  97                 }
  98         }
  99 }
 100
 101 static void __recover_inline_status(struct inode *inode, struct page *ipage)
 102 {
 103         void *inline_data = inline_data_addr(inode, ipage);
 104         __le32 *start = inline_data;
 105         __le32 *end = start + MAX_INLINE_DATA(inode) / sizeof(__le32);
 106
 107         while (start < end) {
 108                 if (*start++) {
 109                         f2fs_wait_on_page_writeback(ipage, NODE, true);
 110
 111                         set_inode_flag(inode, FI_DATA_EXIST);
 112                         set_raw_inline(inode, F2FS_INODE(ipage));
 113                         set_page_dirty(ipage);
 114                         return;
 115                 }
 116         }
 117         return;
 118 }
 119
 120 static bool f2fs_enable_inode_chksum(struct f2fs_sb_info *sbi, struct page *page)
 121 {
 122         struct f2fs_inode *ri = &F2FS_NODE(page)->i;
 123
 124         if (!f2fs_sb_has_inode_chksum(sbi->sb))
 125                 return false;
 126
 127         if (!IS_INODE(page) || !(ri->i_inline & F2FS_EXTRA_ATTR))
 128                 return false;
 129
 130         if (!F2FS_FITS_IN_INODE(ri, le16_to_cpu(ri->i_extra_isize),
 131                                 i_inode_checksum))
 132                 return false;
 133
 134         return true;
 135 }
 136
 137 static __u32 f2fs_inode_chksum(struct f2fs_sb_info *sbi, struct page *page)
 138 {
 139         struct f2fs_node *node = F2FS_NODE(page);
 140         struct f2fs_inode *ri = &node->i;
 141         __le32 ino = node->footer.ino;
 142         __le32 gen = ri->i_generation;
 143         __u32 chksum, chksum_seed;
 144         __u32 dummy_cs = 0;
 145         unsigned int offset = offsetof(struct f2fs_inode, i_inode_checksum);
 146         unsigned int cs_size = sizeof(dummy_cs);
 147
 148         chksum = f2fs_chksum(sbi, sbi->s_chksum_seed, (__u8 *)&ino,
 149                                                         sizeof(ino));
 150         chksum_seed = f2fs_chksum(sbi, chksum, (__u8 *)&gen, sizeof(gen));
 151
 152         chksum = f2fs_chksum(sbi, chksum_seed, (__u8 *)ri, offset);
 153         chksum = f2fs_chksum(sbi, chksum, (__u8 *)&dummy_cs, cs_size);
 154         offset += cs_size;
 155         chksum = f2fs_chksum(sbi, chksum, (__u8 *)ri + offset,
 156                                                 F2FS_BLKSIZE - offset);
 157         return chksum;
 158 }
 159
 160 bool f2fs_inode_chksum_verify(struct f2fs_sb_info *sbi, struct page *page)
 161 {
 162         struct f2fs_inode *ri;
 163         __u32 provided, calculated;
 164
 165         if (unlikely(is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN)))
 166                 return true;
 167
 168 #ifdef CONFIG_F2FS_CHECK_FS
 169         if (!f2fs_enable_inode_chksum(sbi, page))
 170 #else
 171         if (!f2fs_enable_inode_chksum(sbi, page) ||
 172                         PageDirty(page) || PageWriteback(page))
 173 #endif
 174                 return true;
 175
 176         ri = &F2FS_NODE(page)->i;
 177         provided = le32_to_cpu(ri->i_inode_checksum);
 178         calculated = f2fs_inode_chksum(sbi, page);
 179
 180         if (provided != calculated)
 181                 f2fs_msg(sbi->sb, KERN_WARNING,
 182                         "checksum invalid, ino = %x, %x vs. %x",
 183                         ino_of_node(page), provided, calculated);
 184
 185         return provided == calculated;
 186 }
 187
 188 void f2fs_inode_chksum_set(struct f2fs_sb_info *sbi, struct page *page)
 189 {
 190         struct f2fs_inode *ri = &F2FS_NODE(page)->i;
 191
 192         if (!f2fs_enable_inode_chksum(sbi, page))
 193                 return;
 194
 195         ri->i_inode_checksum = cpu_to_le32(f2fs_inode_chksum(sbi, page));
 196 }
 197
 198 static bool sanity_check_inode(struct inode *inode, struct page *node_page)
 199 {
 200         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 201         struct f2fs_inode_info *fi = F2FS_I(inode);
 202         unsigned long long iblocks;
 203
 204         iblocks = le64_to_cpu(F2FS_INODE(node_page)->i_blocks);
 205         if (!iblocks) {
 206                 set_sbi_flag(sbi, SBI_NEED_FSCK);
 207                 f2fs_msg(sbi->sb, KERN_WARNING,
 208                         "%s: corrupted inode i_blocks i_ino=%lx iblocks=%llu, "
 209                         "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_msg(sbi->sb, KERN_WARNING,
 217                         "%s: corrupted inode footer i_ino=%lx, ino,nid: "
 218                         "[%u, %u] run fsck to fix.",
 219                         __func__, inode->i_ino,
 220                         ino_of_node(node_page), nid_of_node(node_page));
 221                 return false;
 222         }
 223
 224         if (f2fs_sb_has_flexible_inline_xattr(sbi->sb)
 225                         && !f2fs_has_extra_attr(inode)) {
 226                 set_sbi_flag(sbi, SBI_NEED_FSCK);
 227                 f2fs_msg(sbi->sb, KERN_WARNING,
 228                         "%s: corrupted inode ino=%lx, run fsck to fix.",
 229                         __func__, inode->i_ino);
 230                 return false;
 231         }
 232
 233         if (f2fs_has_extra_attr(inode) &&
 234                         !f2fs_sb_has_extra_attr(sbi->sb)) {
 235                 set_sbi_flag(sbi, SBI_NEED_FSCK);
 236                 f2fs_msg(sbi->sb, KERN_WARNING,
 237                         "%s: inode (ino=%lx) is with extra_attr, "
 238                         "but extra_attr feature is off",
 239                         __func__, inode->i_ino);
 240                 return false;
 241         }
 242
 243         if (fi->i_extra_isize > F2FS_TOTAL_EXTRA_ATTR_SIZE ||
 244                         fi->i_extra_isize % sizeof(__le32)) {
 245                 set_sbi_flag(sbi, SBI_NEED_FSCK);
 246                 f2fs_msg(sbi->sb, KERN_WARNING,
 247                         "%s: inode (ino=%lx) has corrupted i_extra_isize: %d, "
 248                         "max: %zu",
 249                         __func__, inode->i_ino, fi->i_extra_isize,
 250                         F2FS_TOTAL_EXTRA_ATTR_SIZE);
 251                 return false;
 252         }
 253
 254         if (F2FS_I(inode)->extent_tree) {
 255                 struct extent_info *ei = &F2FS_I(inode)->extent_tree->largest;
 256
 257                 if (ei->len &&
 258                         (!f2fs_is_valid_blkaddr(sbi, ei->blk, DATA_GENERIC) ||
 259                         !f2fs_is_valid_blkaddr(sbi, ei->blk + ei->len - 1,
 260                                                         DATA_GENERIC))) {
 261                         set_sbi_flag(sbi, SBI_NEED_FSCK);
 262                         f2fs_msg(sbi->sb, KERN_WARNING,
 263                                 "%s: inode (ino=%lx) extent info [%u, %u, %u] "
 264                                 "is incorrect, run fsck to fix",
 265                                 __func__, inode->i_ino,
 266                                 ei->blk, ei->fofs, ei->len);
 267                         return false;
 268                 }
 269         }
 270
 271         if (f2fs_has_inline_data(inode) &&
 272                         (!S_ISREG(inode->i_mode) && !S_ISLNK(inode->i_mode))) {
 273                 set_sbi_flag(sbi, SBI_NEED_FSCK);
 274                 f2fs_msg(sbi->sb, KERN_WARNING,
 275                         "%s: inode (ino=%lx, mode=%u) should not have "
 276                         "inline_data, run fsck to fix",
 277                         __func__, inode->i_ino, inode->i_mode);
 278                 return false;
 279         }
 280
 281         if (f2fs_has_inline_dentry(inode) && !S_ISDIR(inode->i_mode)) {
 282                 set_sbi_flag(sbi, SBI_NEED_FSCK);
 283                 f2fs_msg(sbi->sb, KERN_WARNING,
 284                         "%s: inode (ino=%lx, mode=%u) should not have "
 285                         "inline_dentry, run fsck to fix",
 286                         __func__, inode->i_ino, inode->i_mode);
 287                 return false;
 288         }
 289
 290         return true;
 291 }
 292
 293 static int do_read_inode(struct inode *inode)
 294 {
 295         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 296         struct f2fs_inode_info *fi = F2FS_I(inode);
 297         struct page *node_page;
 298         struct f2fs_inode *ri;
 299         projid_t i_projid;
 300         int err;
 301
 302         /* Check if ino is within scope */
 303         if (f2fs_check_nid_range(sbi, inode->i_ino))
 304                 return -EINVAL;
 305
 306         node_page = f2fs_get_node_page(sbi, inode->i_ino);
 307         if (IS_ERR(node_page))
 308                 return PTR_ERR(node_page);
 309
 310         ri = F2FS_INODE(node_page);
 311
 312         inode->i_mode = le16_to_cpu(ri->i_mode);
 313         i_uid_write(inode, le32_to_cpu(ri->i_uid));
 314         i_gid_write(inode, le32_to_cpu(ri->i_gid));
 315         set_nlink(inode, le32_to_cpu(ri->i_links));
 316         inode->i_size = le64_to_cpu(ri->i_size);
 317         inode->i_blocks = SECTOR_FROM_BLOCK(le64_to_cpu(ri->i_blocks) - 1);
 318
 319         inode->i_atime.tv_sec = le64_to_cpu(ri->i_atime);
 320         inode->i_ctime.tv_sec = le64_to_cpu(ri->i_ctime);
 321         inode->i_mtime.tv_sec = le64_to_cpu(ri->i_mtime);
 322         inode->i_atime.tv_nsec = le32_to_cpu(ri->i_atime_nsec);
 323         inode->i_ctime.tv_nsec = le32_to_cpu(ri->i_ctime_nsec);
 324         inode->i_mtime.tv_nsec = le32_to_cpu(ri->i_mtime_nsec);
 325         inode->i_generation = le32_to_cpu(ri->i_generation);
 326         if (S_ISDIR(inode->i_mode))
 327                 fi->i_current_depth = le32_to_cpu(ri->i_current_depth);
 328         else if (S_ISREG(inode->i_mode))
 329                 fi->i_gc_failures[GC_FAILURE_PIN] =
 330                                         le16_to_cpu(ri->i_gc_failures);
 331         fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid);
 332         fi->i_flags = le32_to_cpu(ri->i_flags);
 333         fi->flags = 0;
 334         fi->i_advise = ri->i_advise;
 335         fi->i_pino = le32_to_cpu(ri->i_pino);
 336         fi->i_dir_level = ri->i_dir_level;
 337
 338         if (f2fs_init_extent_tree(inode, &ri->i_ext))
 339                 set_page_dirty(node_page);
 340
 341         get_inline_info(inode, ri);
 342
 343         fi->i_extra_isize = f2fs_has_extra_attr(inode) ?
 344                                         le16_to_cpu(ri->i_extra_isize) : 0;
 345
 346         if (f2fs_sb_has_flexible_inline_xattr(sbi->sb)) {
 347                 fi->i_inline_xattr_size = le16_to_cpu(ri->i_inline_xattr_size);
 348         } else if (f2fs_has_inline_xattr(inode) ||
 349                                 f2fs_has_inline_dentry(inode)) {
 350                 fi->i_inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
 351         } else {
 352
 353                 /*
 354                  * Previous inline data or directory always reserved 200 bytes
 355                  * in inode layout, even if inline_xattr is disabled. In order
 356                  * to keep inline_dentry's structure for backward compatibility,
 357                  * we get the space back only from inline_data.
 358                  */
 359                 fi->i_inline_xattr_size = 0;
 360         }
 361
 362         if (!sanity_check_inode(inode, node_page)) {
 363                 f2fs_put_page(node_page, 1);
 364                 return -EINVAL;
 365         }
 366
 367         /* check data exist */
 368         if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode))
 369                 __recover_inline_status(inode, node_page);
 370
 371         /* get rdev by using inline_info */
 372         __get_inode_rdev(inode, ri);
 373
 374         if (S_ISREG(inode->i_mode)) {
 375                 err = __written_first_block(sbi, ri);
 376                 if (err < 0) {
 377                         f2fs_put_page(node_page, 1);
 378                         return err;
 379                 }
 380                 if (!err)
 381                         set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN);
 382         }
 383
 384         if (!f2fs_need_inode_block_update(sbi, inode->i_ino))
 385                 fi->last_disk_size = inode->i_size;
 386
 387         if (fi->i_flags & F2FS_PROJINHERIT_FL)
 388                 set_inode_flag(inode, FI_PROJ_INHERIT);
 389
 390         if (f2fs_has_extra_attr(inode) && f2fs_sb_has_project_quota(sbi->sb) &&
 391                         F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_projid))
 392                 i_projid = (projid_t)le32_to_cpu(ri->i_projid);
 393         else
 394                 i_projid = F2FS_DEF_PROJID;
 395         fi->i_projid = make_kprojid(&init_user_ns, i_projid);
 396
 397         if (f2fs_has_extra_attr(inode) && f2fs_sb_has_inode_crtime(sbi->sb) &&
 398                         F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) {
 399                 fi->i_crtime.tv_sec = le64_to_cpu(ri->i_crtime);
 400                 fi->i_crtime.tv_nsec = le32_to_cpu(ri->i_crtime_nsec);
 401         }
 402
 403         F2FS_I(inode)->i_disk_time[0] = inode->i_atime;
 404         F2FS_I(inode)->i_disk_time[1] = inode->i_ctime;
 405         F2FS_I(inode)->i_disk_time[2] = inode->i_mtime;
 406         F2FS_I(inode)->i_disk_time[3] = F2FS_I(inode)->i_crtime;
 407         f2fs_put_page(node_page, 1);
 408
 409         stat_inc_inline_xattr(inode);
 410         stat_inc_inline_inode(inode);
 411         stat_inc_inline_dir(inode);
 412
 413         return 0;
 414 }
 415
 416 struct inode *f2fs_iget(struct super_block *sb, unsigned long ino)
 417 {
 418         struct f2fs_sb_info *sbi = F2FS_SB(sb);
 419         struct inode *inode;
 420         int ret = 0;
 421
 422         inode = iget_locked(sb, ino);
 423         if (!inode)
 424                 return ERR_PTR(-ENOMEM);
 425
 426         if (!(inode->i_state & I_NEW)) {
 427                 trace_f2fs_iget(inode);
 428                 return inode;
 429         }
 430         if (ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi))
 431                 goto make_now;
 432
 433         ret = do_read_inode(inode);
 434         if (ret)
 435                 goto bad_inode;
 436 make_now:
 437         if (ino == F2FS_NODE_INO(sbi)) {
 438                 inode->i_mapping->a_ops = &f2fs_node_aops;
 439                 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
 440         } else if (ino == F2FS_META_INO(sbi)) {
 441                 inode->i_mapping->a_ops = &f2fs_meta_aops;
 442                 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
 443         } else if (S_ISREG(inode->i_mode)) {
 444                 inode->i_op = &f2fs_file_inode_operations;
 445                 inode->i_fop = &f2fs_file_operations;
 446                 inode->i_mapping->a_ops = &f2fs_dblock_aops;
 447         } else if (S_ISDIR(inode->i_mode)) {
 448                 inode->i_op = &f2fs_dir_inode_operations;
 449                 inode->i_fop = &f2fs_dir_operations;
 450                 inode->i_mapping->a_ops = &f2fs_dblock_aops;
 451                 inode_nohighmem(inode);
 452         } else if (S_ISLNK(inode->i_mode)) {
 453                 if (f2fs_encrypted_inode(inode))
 454                         inode->i_op = &f2fs_encrypted_symlink_inode_operations;
 455                 else
 456                         inode->i_op = &f2fs_symlink_inode_operations;
 457                 inode_nohighmem(inode);
 458                 inode->i_mapping->a_ops = &f2fs_dblock_aops;
 459         } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
 460                         S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
 461                 inode->i_op = &f2fs_special_inode_operations;
 462                 init_special_inode(inode, inode->i_mode, inode->i_rdev);
 463         } else {
 464                 ret = -EIO;
 465                 goto bad_inode;
 466         }
 467         f2fs_set_inode_flags(inode);
 468         unlock_new_inode(inode);
 469         trace_f2fs_iget(inode);
 470         return inode;
 471
 472 bad_inode:
 473         iget_failed(inode);
 474         trace_f2fs_iget_exit(inode, ret);
 475         return ERR_PTR(ret);
 476 }
 477
 478 struct inode *f2fs_iget_retry(struct super_block *sb, unsigned long ino)
 479 {
 480         struct inode *inode;
 481 retry:
 482         inode = f2fs_iget(sb, ino);
 483         if (IS_ERR(inode)) {
 484                 if (PTR_ERR(inode) == -ENOMEM) {
 485                         congestion_wait(BLK_RW_ASYNC, HZ/50);
 486                         goto retry;
 487                 }
 488         }
 489         return inode;
 490 }
 491
 492 void f2fs_update_inode(struct inode *inode, struct page *node_page)
 493 {
 494         struct f2fs_inode *ri;
 495         struct extent_tree *et = F2FS_I(inode)->extent_tree;
 496
 497         f2fs_wait_on_page_writeback(node_page, NODE, true);
 498         set_page_dirty(node_page);
 499
 500         f2fs_inode_synced(inode);
 501
 502         ri = F2FS_INODE(node_page);
 503
 504         ri->i_mode = cpu_to_le16(inode->i_mode);
 505         ri->i_advise = F2FS_I(inode)->i_advise;
 506         ri->i_uid = cpu_to_le32(i_uid_read(inode));
 507         ri->i_gid = cpu_to_le32(i_gid_read(inode));
 508         ri->i_links = cpu_to_le32(inode->i_nlink);
 509         ri->i_size = cpu_to_le64(i_size_read(inode));
 510         ri->i_blocks = cpu_to_le64(SECTOR_TO_BLOCK(inode->i_blocks) + 1);
 511
 512         if (et) {
 513                 read_lock(&et->lock);
 514                 set_raw_extent(&et->largest, &ri->i_ext);
 515                 read_unlock(&et->lock);
 516         } else {
 517                 memset(&ri->i_ext, 0, sizeof(ri->i_ext));
 518         }
 519         set_raw_inline(inode, ri);
 520
 521         ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec);
 522         ri->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
 523         ri->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec);
 524         ri->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec);
 525         ri->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
 526         ri->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec);
 527         if (S_ISDIR(inode->i_mode))
 528                 ri->i_current_depth =
 529                         cpu_to_le32(F2FS_I(inode)->i_current_depth);
 530         else if (S_ISREG(inode->i_mode))
 531                 ri->i_gc_failures =
 532                         cpu_to_le16(F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN]);
 533         ri->i_xattr_nid = cpu_to_le32(F2FS_I(inode)->i_xattr_nid);
 534         ri->i_flags = cpu_to_le32(F2FS_I(inode)->i_flags);
 535         ri->i_pino = cpu_to_le32(F2FS_I(inode)->i_pino);
 536         ri->i_generation = cpu_to_le32(inode->i_generation);
 537         ri->i_dir_level = F2FS_I(inode)->i_dir_level;
 538
 539         if (f2fs_has_extra_attr(inode)) {
 540                 ri->i_extra_isize = cpu_to_le16(F2FS_I(inode)->i_extra_isize);
 541
 542                 if (f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(inode)->sb))
 543                         ri->i_inline_xattr_size =
 544                                 cpu_to_le16(F2FS_I(inode)->i_inline_xattr_size);
 545
 546                 if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)->sb) &&
 547                         F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
 548                                                                 i_projid)) {
 549                         projid_t i_projid;
 550
 551                         i_projid = from_kprojid(&init_user_ns,
 552                                                 F2FS_I(inode)->i_projid);
 553                         ri->i_projid = cpu_to_le32(i_projid);
 554                 }
 555
 556                 if (f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)->sb) &&
 557                         F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
 558                                                                 i_crtime)) {
 559                         ri->i_crtime =
 560                                 cpu_to_le64(F2FS_I(inode)->i_crtime.tv_sec);
 561                         ri->i_crtime_nsec =
 562                                 cpu_to_le32(F2FS_I(inode)->i_crtime.tv_nsec);
 563                 }
 564         }
 565
 566         __set_inode_rdev(inode, ri);
 567
 568         /* deleted inode */
 569         if (inode->i_nlink == 0)
 570                 clear_inline_node(node_page);
 571
 572         F2FS_I(inode)->i_disk_time[0] = inode->i_atime;
 573         F2FS_I(inode)->i_disk_time[1] = inode->i_ctime;
 574         F2FS_I(inode)->i_disk_time[2] = inode->i_mtime;
 575         F2FS_I(inode)->i_disk_time[3] = F2FS_I(inode)->i_crtime;
 576
 577 #ifdef CONFIG_F2FS_CHECK_FS
 578         f2fs_inode_chksum_set(F2FS_I_SB(inode), node_page);
 579 #endif
 580 }
 581
 582 void f2fs_update_inode_page(struct inode *inode)
 583 {
 584         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 585         struct page *node_page;
 586 retry:
 587         node_page = f2fs_get_node_page(sbi, inode->i_ino);
 588         if (IS_ERR(node_page)) {
 589                 int err = PTR_ERR(node_page);
 590                 if (err == -ENOMEM) {
 591                         cond_resched();
 592                         goto retry;
 593                 } else if (err != -ENOENT) {
 594                         f2fs_stop_checkpoint(sbi, false);
 595                 }
 596                 return;
 597         }
 598         f2fs_update_inode(inode, node_page);
 599         f2fs_put_page(node_page, 1);
 600 }
 601
 602 int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc)
 603 {
 604         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 605
 606         if (inode->i_ino == F2FS_NODE_INO(sbi) ||
 607                         inode->i_ino == F2FS_META_INO(sbi))
 608                 return 0;
 609
 610         if (!is_inode_flag_set(inode, FI_DIRTY_INODE))
 611                 return 0;
 612
 613         /*
 614          * We need to balance fs here to prevent from producing dirty node pages
 615          * during the urgent cleaning time when runing out of free sections.
 616          */
 617         f2fs_update_inode_page(inode);
 618         if (wbc && wbc->nr_to_write)
 619                 f2fs_balance_fs(sbi, true);
 620         return 0;
 621 }
 622
 623 /*
 624  * Called at the last iput() if i_nlink is zero
 625  */
 626 void f2fs_evict_inode(struct inode *inode)
 627 {
 628         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 629         nid_t xnid = F2FS_I(inode)->i_xattr_nid;
 630         int err = 0;
 631
 632         /* some remained atomic pages should discarded */
 633         if (f2fs_is_atomic_file(inode))
 634                 f2fs_drop_inmem_pages(inode);
 635
 636         trace_f2fs_evict_inode(inode);
 637         truncate_inode_pages_final(&inode->i_data);
 638
 639         if (inode->i_ino == F2FS_NODE_INO(sbi) ||
 640                         inode->i_ino == F2FS_META_INO(sbi))
 641                 goto out_clear;
 642
 643         f2fs_bug_on(sbi, get_dirty_pages(inode));
 644         f2fs_remove_dirty_inode(inode);
 645
 646         f2fs_destroy_extent_tree(inode);
 647
 648         if (inode->i_nlink || is_bad_inode(inode))
 649                 goto no_delete;
 650
 651         dquot_initialize(inode);
 652
 653         f2fs_remove_ino_entry(sbi, inode->i_ino, APPEND_INO);
 654         f2fs_remove_ino_entry(sbi, inode->i_ino, UPDATE_INO);
 655         f2fs_remove_ino_entry(sbi, inode->i_ino, FLUSH_INO);
 656
 657         sb_start_intwrite(inode->i_sb);
 658         set_inode_flag(inode, FI_NO_ALLOC);
 659         i_size_write(inode, 0);
 660 retry:
 661         if (F2FS_HAS_BLOCKS(inode))
 662                 err = f2fs_truncate(inode);
 663
 664         if (time_to_inject(sbi, FAULT_EVICT_INODE)) {
 665                 f2fs_show_injection_info(FAULT_EVICT_INODE);
 666                 err = -EIO;
 667         }
 668
 669         if (!err) {
 670                 f2fs_lock_op(sbi);
 671                 err = f2fs_remove_inode_page(inode);
 672                 f2fs_unlock_op(sbi);
 673                 if (err == -ENOENT)
 674                         err = 0;
 675         }
 676
 677         /* give more chances, if ENOMEM case */
 678         if (err == -ENOMEM) {
 679                 err = 0;
 680                 goto retry;
 681         }
 682
 683         if (err)
 684                 f2fs_update_inode_page(inode);
 685         dquot_free_inode(inode);
 686         sb_end_intwrite(inode->i_sb);
 687 no_delete:
 688         dquot_drop(inode);
 689
 690         stat_dec_inline_xattr(inode);
 691         stat_dec_inline_dir(inode);
 692         stat_dec_inline_inode(inode);
 693
 694         if (likely(!is_set_ckpt_flags(sbi, CP_ERROR_FLAG)))
 695                 f2fs_bug_on(sbi, is_inode_flag_set(inode, FI_DIRTY_INODE));
 696         else
 697                 f2fs_inode_synced(inode);
 698
 699         /* ino == 0, if f2fs_new_inode() was failed t*/
 700         if (inode->i_ino)
 701                 invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino,
 702                                                         inode->i_ino);
 703         if (xnid)
 704                 invalidate_mapping_pages(NODE_MAPPING(sbi), xnid, xnid);
 705         if (inode->i_nlink) {
 706                 if (is_inode_flag_set(inode, FI_APPEND_WRITE))
 707                         f2fs_add_ino_entry(sbi, inode->i_ino, APPEND_INO);
 708                 if (is_inode_flag_set(inode, FI_UPDATE_WRITE))
 709                         f2fs_add_ino_entry(sbi, inode->i_ino, UPDATE_INO);
 710         }
 711         if (is_inode_flag_set(inode, FI_FREE_NID)) {
 712                 f2fs_alloc_nid_failed(sbi, inode->i_ino);
 713                 clear_inode_flag(inode, FI_FREE_NID);
 714         } else {
 715                 /*
 716                  * If xattr nid is corrupted, we can reach out error condition,
 717                  * err & !f2fs_exist_written_data(sbi, inode->i_ino, ORPHAN_INO)).
 718                  * In that case, f2fs_check_nid_range() is enough to give a clue.
 719                  */
 720         }
 721 out_clear:
 722         fscrypt_put_encryption_info(inode);
 723         clear_inode(inode);
 724 }
 725
 726 /* caller should call f2fs_lock_op() */
 727 void f2fs_handle_failed_inode(struct inode *inode)
 728 {
 729         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 730         struct node_info ni;
 731         int err;
 732
 733         /*
 734          * clear nlink of inode in order to release resource of inode
 735          * immediately.
 736          */
 737         clear_nlink(inode);
 738
 739         /*
 740          * we must call this to avoid inode being remained as dirty, resulting
 741          * in a panic when flushing dirty inodes in gdirty_list.
 742          */
 743         f2fs_update_inode_page(inode);
 744         f2fs_inode_synced(inode);
 745
 746         /* don't make bad inode, since it becomes a regular file. */
 747         unlock_new_inode(inode);
 748
 749         /*
 750          * Note: we should add inode to orphan list before f2fs_unlock_op()
 751          * so we can prevent losing this orphan when encoutering checkpoint
 752          * and following suddenly power-off.
 753          */
 754         err = f2fs_get_node_info(sbi, inode->i_ino, &ni);
 755         if (err) {
 756                 set_sbi_flag(sbi, SBI_NEED_FSCK);
 757                 f2fs_msg(sbi->sb, KERN_WARNING,
 758                         "May loss orphan inode, run fsck to fix.");
 759                 goto out;
 760         }
 761
 762         if (ni.blk_addr != NULL_ADDR) {
 763                 err = f2fs_acquire_orphan_inode(sbi);
 764                 if (err) {
 765                         set_sbi_flag(sbi, SBI_NEED_FSCK);
 766                         f2fs_msg(sbi->sb, KERN_WARNING,
 767                                 "Too many orphan inodes, run fsck to fix.");
 768                 } else {
 769                         f2fs_add_orphan_inode(inode);
 770                 }
 771                 f2fs_alloc_nid_done(sbi, inode->i_ino);
 772         } else {
 773                 set_inode_flag(inode, FI_FREE_NID);
 774         }
 775
 776 out:
 777         f2fs_unlock_op(sbi);
 778
 779         /* iput will drop the inode object */
 780         iput(inode);
 781 }