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