1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * fs/f2fs/recovery.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 "f2fs.h" 11 #include "node.h" 12 #include "segment.h" 13 14 /* 15 * Roll forward recovery scenarios. 16 * 17 * [Term] F: fsync_mark, D: dentry_mark 18 * 19 * 1. inode(x) | CP | inode(x) | dnode(F) 20 * -> Update the latest inode(x). 21 * 22 * 2. inode(x) | CP | inode(F) | dnode(F) 23 * -> No problem. 24 * 25 * 3. inode(x) | CP | dnode(F) | inode(x) 26 * -> Recover to the latest dnode(F), and drop the last inode(x) 27 * 28 * 4. inode(x) | CP | dnode(F) | inode(F) 29 * -> No problem. 30 * 31 * 5. CP | inode(x) | dnode(F) 32 * -> The inode(DF) was missing. Should drop this dnode(F). 33 * 34 * 6. CP | inode(DF) | dnode(F) 35 * -> No problem. 36 * 37 * 7. CP | dnode(F) | inode(DF) 38 * -> If f2fs_iget fails, then goto next to find inode(DF). 39 * 40 * 8. CP | dnode(F) | inode(x) 41 * -> If f2fs_iget fails, then goto next to find inode(DF). 42 * But it will fail due to no inode(DF). 43 */ 44 45 static struct kmem_cache *fsync_entry_slab; 46 47 bool f2fs_space_for_roll_forward(struct f2fs_sb_info *sbi) 48 { 49 s64 nalloc = percpu_counter_sum_positive(&sbi->alloc_valid_block_count); 50 51 if (sbi->last_valid_block_count + nalloc > sbi->user_block_count) 52 return false; 53 return true; 54 } 55 56 static struct fsync_inode_entry *get_fsync_inode(struct list_head *head, 57 nid_t ino) 58 { 59 struct fsync_inode_entry *entry; 60 61 list_for_each_entry(entry, head, list) 62 if (entry->inode->i_ino == ino) 63 return entry; 64 65 return NULL; 66 } 67 68 static struct fsync_inode_entry *add_fsync_inode(struct f2fs_sb_info *sbi, 69 struct list_head *head, nid_t ino, bool quota_inode) 70 { 71 struct inode *inode; 72 struct fsync_inode_entry *entry; 73 int err; 74 75 inode = f2fs_iget_retry(sbi->sb, ino); 76 if (IS_ERR(inode)) 77 return ERR_CAST(inode); 78 79 err = dquot_initialize(inode); 80 if (err) 81 goto err_out; 82 83 if (quota_inode) { 84 err = dquot_alloc_inode(inode); 85 if (err) 86 goto err_out; 87 } 88 89 entry = f2fs_kmem_cache_alloc(fsync_entry_slab, GFP_F2FS_ZERO); 90 entry->inode = inode; 91 list_add_tail(&entry->list, head); 92 93 return entry; 94 err_out: 95 iput(inode); 96 return ERR_PTR(err); 97 } 98 99 static void del_fsync_inode(struct fsync_inode_entry *entry) 100 { 101 iput(entry->inode); 102 list_del(&entry->list); 103 kmem_cache_free(fsync_entry_slab, entry); 104 } 105 106 static int recover_dentry(struct inode *inode, struct page *ipage, 107 struct list_head *dir_list) 108 { 109 struct f2fs_inode *raw_inode = F2FS_INODE(ipage); 110 nid_t pino = le32_to_cpu(raw_inode->i_pino); 111 struct f2fs_dir_entry *de; 112 struct fscrypt_name fname; 113 struct page *page; 114 struct inode *dir, *einode; 115 struct fsync_inode_entry *entry; 116 int err = 0; 117 char *name; 118 119 entry = get_fsync_inode(dir_list, pino); 120 if (!entry) { 121 entry = add_fsync_inode(F2FS_I_SB(inode), dir_list, 122 pino, false); 123 if (IS_ERR(entry)) { 124 dir = ERR_CAST(entry); 125 err = PTR_ERR(entry); 126 goto out; 127 } 128 } 129 130 dir = entry->inode; 131 132 memset(&fname, 0, sizeof(struct fscrypt_name)); 133 fname.disk_name.len = le32_to_cpu(raw_inode->i_namelen); 134 fname.disk_name.name = raw_inode->i_name; 135 136 if (unlikely(fname.disk_name.len > F2FS_NAME_LEN)) { 137 WARN_ON(1); 138 err = -ENAMETOOLONG; 139 goto out; 140 } 141 retry: 142 de = __f2fs_find_entry(dir, &fname, &page); 143 if (de && inode->i_ino == le32_to_cpu(de->ino)) 144 goto out_put; 145 146 if (de) { 147 einode = f2fs_iget_retry(inode->i_sb, le32_to_cpu(de->ino)); 148 if (IS_ERR(einode)) { 149 WARN_ON(1); 150 err = PTR_ERR(einode); 151 if (err == -ENOENT) 152 err = -EEXIST; 153 goto out_put; 154 } 155 156 err = dquot_initialize(einode); 157 if (err) { 158 iput(einode); 159 goto out_put; 160 } 161 162 err = f2fs_acquire_orphan_inode(F2FS_I_SB(inode)); 163 if (err) { 164 iput(einode); 165 goto out_put; 166 } 167 f2fs_delete_entry(de, page, dir, einode); 168 iput(einode); 169 goto retry; 170 } else if (IS_ERR(page)) { 171 err = PTR_ERR(page); 172 } else { 173 err = f2fs_add_dentry(dir, &fname, inode, 174 inode->i_ino, inode->i_mode); 175 } 176 if (err == -ENOMEM) 177 goto retry; 178 goto out; 179 180 out_put: 181 f2fs_put_page(page, 0); 182 out: 183 if (file_enc_name(inode)) 184 name = "<encrypted>"; 185 else 186 name = raw_inode->i_name; 187 f2fs_msg(inode->i_sb, KERN_NOTICE, 188 "%s: ino = %x, name = %s, dir = %lx, err = %d", 189 __func__, ino_of_node(ipage), name, 190 IS_ERR(dir) ? 0 : dir->i_ino, err); 191 return err; 192 } 193 194 static void recover_inline_flags(struct inode *inode, struct f2fs_inode *ri) 195 { 196 if (ri->i_inline & F2FS_PIN_FILE) 197 set_inode_flag(inode, FI_PIN_FILE); 198 else 199 clear_inode_flag(inode, FI_PIN_FILE); 200 if (ri->i_inline & F2FS_DATA_EXIST) 201 set_inode_flag(inode, FI_DATA_EXIST); 202 else 203 clear_inode_flag(inode, FI_DATA_EXIST); 204 } 205 206 static void recover_inode(struct inode *inode, struct page *page) 207 { 208 struct f2fs_inode *raw = F2FS_INODE(page); 209 char *name; 210 211 inode->i_mode = le16_to_cpu(raw->i_mode); 212 i_uid_write(inode, le32_to_cpu(raw->i_uid)); 213 i_gid_write(inode, le32_to_cpu(raw->i_gid)); 214 215 if (raw->i_inline & F2FS_EXTRA_ATTR) { 216 if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)->sb) && 217 F2FS_FITS_IN_INODE(raw, le16_to_cpu(raw->i_extra_isize), 218 i_projid)) { 219 projid_t i_projid; 220 221 i_projid = (projid_t)le32_to_cpu(raw->i_projid); 222 F2FS_I(inode)->i_projid = 223 make_kprojid(&init_user_ns, i_projid); 224 } 225 } 226 227 f2fs_i_size_write(inode, le64_to_cpu(raw->i_size)); 228 inode->i_atime.tv_sec = le64_to_cpu(raw->i_atime); 229 inode->i_ctime.tv_sec = le64_to_cpu(raw->i_ctime); 230 inode->i_mtime.tv_sec = le64_to_cpu(raw->i_mtime); 231 inode->i_atime.tv_nsec = le32_to_cpu(raw->i_atime_nsec); 232 inode->i_ctime.tv_nsec = le32_to_cpu(raw->i_ctime_nsec); 233 inode->i_mtime.tv_nsec = le32_to_cpu(raw->i_mtime_nsec); 234 235 F2FS_I(inode)->i_advise = raw->i_advise; 236 F2FS_I(inode)->i_flags = le32_to_cpu(raw->i_flags); 237 f2fs_set_inode_flags(inode); 238 F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN] = 239 le16_to_cpu(raw->i_gc_failures); 240 241 recover_inline_flags(inode, raw); 242 243 f2fs_mark_inode_dirty_sync(inode, true); 244 245 if (file_enc_name(inode)) 246 name = "<encrypted>"; 247 else 248 name = F2FS_INODE(page)->i_name; 249 250 f2fs_msg(inode->i_sb, KERN_NOTICE, 251 "recover_inode: ino = %x, name = %s, inline = %x", 252 ino_of_node(page), name, raw->i_inline); 253 } 254 255 static int find_fsync_dnodes(struct f2fs_sb_info *sbi, struct list_head *head, 256 bool check_only) 257 { 258 struct curseg_info *curseg; 259 struct page *page = NULL; 260 block_t blkaddr; 261 unsigned int loop_cnt = 0; 262 unsigned int free_blocks = MAIN_SEGS(sbi) * sbi->blocks_per_seg - 263 valid_user_blocks(sbi); 264 int err = 0; 265 266 /* get node pages in the current segment */ 267 curseg = CURSEG_I(sbi, CURSEG_WARM_NODE); 268 blkaddr = NEXT_FREE_BLKADDR(sbi, curseg); 269 270 while (1) { 271 struct fsync_inode_entry *entry; 272 273 if (!f2fs_is_valid_blkaddr(sbi, blkaddr, META_POR)) 274 return 0; 275 276 page = f2fs_get_tmp_page(sbi, blkaddr); 277 if (IS_ERR(page)) { 278 err = PTR_ERR(page); 279 break; 280 } 281 282 if (!is_recoverable_dnode(page)) 283 break; 284 285 if (!is_fsync_dnode(page)) 286 goto next; 287 288 entry = get_fsync_inode(head, ino_of_node(page)); 289 if (!entry) { 290 bool quota_inode = false; 291 292 if (!check_only && 293 IS_INODE(page) && is_dent_dnode(page)) { 294 err = f2fs_recover_inode_page(sbi, page); 295 if (err) 296 break; 297 quota_inode = true; 298 } 299 300 /* 301 * CP | dnode(F) | inode(DF) 302 * For this case, we should not give up now. 303 */ 304 entry = add_fsync_inode(sbi, head, ino_of_node(page), 305 quota_inode); 306 if (IS_ERR(entry)) { 307 err = PTR_ERR(entry); 308 if (err == -ENOENT) { 309 err = 0; 310 goto next; 311 } 312 break; 313 } 314 } 315 entry->blkaddr = blkaddr; 316 317 if (IS_INODE(page) && is_dent_dnode(page)) 318 entry->last_dentry = blkaddr; 319 next: 320 /* sanity check in order to detect looped node chain */ 321 if (++loop_cnt >= free_blocks || 322 blkaddr == next_blkaddr_of_node(page)) { 323 f2fs_msg(sbi->sb, KERN_NOTICE, 324 "%s: detect looped node chain, " 325 "blkaddr:%u, next:%u", 326 __func__, blkaddr, next_blkaddr_of_node(page)); 327 err = -EINVAL; 328 break; 329 } 330 331 /* check next segment */ 332 blkaddr = next_blkaddr_of_node(page); 333 f2fs_put_page(page, 1); 334 335 f2fs_ra_meta_pages_cond(sbi, blkaddr); 336 } 337 f2fs_put_page(page, 1); 338 return err; 339 } 340 341 static void destroy_fsync_dnodes(struct list_head *head) 342 { 343 struct fsync_inode_entry *entry, *tmp; 344 345 list_for_each_entry_safe(entry, tmp, head, list) 346 del_fsync_inode(entry); 347 } 348 349 static int check_index_in_prev_nodes(struct f2fs_sb_info *sbi, 350 block_t blkaddr, struct dnode_of_data *dn) 351 { 352 struct seg_entry *sentry; 353 unsigned int segno = GET_SEGNO(sbi, blkaddr); 354 unsigned short blkoff = GET_BLKOFF_FROM_SEG0(sbi, blkaddr); 355 struct f2fs_summary_block *sum_node; 356 struct f2fs_summary sum; 357 struct page *sum_page, *node_page; 358 struct dnode_of_data tdn = *dn; 359 nid_t ino, nid; 360 struct inode *inode; 361 unsigned int offset; 362 block_t bidx; 363 int i; 364 365 sentry = get_seg_entry(sbi, segno); 366 if (!f2fs_test_bit(blkoff, sentry->cur_valid_map)) 367 return 0; 368 369 /* Get the previous summary */ 370 for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) { 371 struct curseg_info *curseg = CURSEG_I(sbi, i); 372 if (curseg->segno == segno) { 373 sum = curseg->sum_blk->entries[blkoff]; 374 goto got_it; 375 } 376 } 377 378 sum_page = f2fs_get_sum_page(sbi, segno); 379 if (IS_ERR(sum_page)) 380 return PTR_ERR(sum_page); 381 sum_node = (struct f2fs_summary_block *)page_address(sum_page); 382 sum = sum_node->entries[blkoff]; 383 f2fs_put_page(sum_page, 1); 384 got_it: 385 /* Use the locked dnode page and inode */ 386 nid = le32_to_cpu(sum.nid); 387 if (dn->inode->i_ino == nid) { 388 tdn.nid = nid; 389 if (!dn->inode_page_locked) 390 lock_page(dn->inode_page); 391 tdn.node_page = dn->inode_page; 392 tdn.ofs_in_node = le16_to_cpu(sum.ofs_in_node); 393 goto truncate_out; 394 } else if (dn->nid == nid) { 395 tdn.ofs_in_node = le16_to_cpu(sum.ofs_in_node); 396 goto truncate_out; 397 } 398 399 /* Get the node page */ 400 node_page = f2fs_get_node_page(sbi, nid); 401 if (IS_ERR(node_page)) 402 return PTR_ERR(node_page); 403 404 offset = ofs_of_node(node_page); 405 ino = ino_of_node(node_page); 406 f2fs_put_page(node_page, 1); 407 408 if (ino != dn->inode->i_ino) { 409 int ret; 410 411 /* Deallocate previous index in the node page */ 412 inode = f2fs_iget_retry(sbi->sb, ino); 413 if (IS_ERR(inode)) 414 return PTR_ERR(inode); 415 416 ret = dquot_initialize(inode); 417 if (ret) { 418 iput(inode); 419 return ret; 420 } 421 } else { 422 inode = dn->inode; 423 } 424 425 bidx = f2fs_start_bidx_of_node(offset, inode) + 426 le16_to_cpu(sum.ofs_in_node); 427 428 /* 429 * if inode page is locked, unlock temporarily, but its reference 430 * count keeps alive. 431 */ 432 if (ino == dn->inode->i_ino && dn->inode_page_locked) 433 unlock_page(dn->inode_page); 434 435 set_new_dnode(&tdn, inode, NULL, NULL, 0); 436 if (f2fs_get_dnode_of_data(&tdn, bidx, LOOKUP_NODE)) 437 goto out; 438 439 if (tdn.data_blkaddr == blkaddr) 440 f2fs_truncate_data_blocks_range(&tdn, 1); 441 442 f2fs_put_dnode(&tdn); 443 out: 444 if (ino != dn->inode->i_ino) 445 iput(inode); 446 else if (dn->inode_page_locked) 447 lock_page(dn->inode_page); 448 return 0; 449 450 truncate_out: 451 if (datablock_addr(tdn.inode, tdn.node_page, 452 tdn.ofs_in_node) == blkaddr) 453 f2fs_truncate_data_blocks_range(&tdn, 1); 454 if (dn->inode->i_ino == nid && !dn->inode_page_locked) 455 unlock_page(dn->inode_page); 456 return 0; 457 } 458 459 static int do_recover_data(struct f2fs_sb_info *sbi, struct inode *inode, 460 struct page *page) 461 { 462 struct dnode_of_data dn; 463 struct node_info ni; 464 unsigned int start, end; 465 int err = 0, recovered = 0; 466 467 /* step 1: recover xattr */ 468 if (IS_INODE(page)) { 469 f2fs_recover_inline_xattr(inode, page); 470 } else if (f2fs_has_xattr_block(ofs_of_node(page))) { 471 err = f2fs_recover_xattr_data(inode, page); 472 if (!err) 473 recovered++; 474 goto out; 475 } 476 477 /* step 2: recover inline data */ 478 if (f2fs_recover_inline_data(inode, page)) 479 goto out; 480 481 /* step 3: recover data indices */ 482 start = f2fs_start_bidx_of_node(ofs_of_node(page), inode); 483 end = start + ADDRS_PER_PAGE(page, inode); 484 485 set_new_dnode(&dn, inode, NULL, NULL, 0); 486 retry_dn: 487 err = f2fs_get_dnode_of_data(&dn, start, ALLOC_NODE); 488 if (err) { 489 if (err == -ENOMEM) { 490 congestion_wait(BLK_RW_ASYNC, HZ/50); 491 goto retry_dn; 492 } 493 goto out; 494 } 495 496 f2fs_wait_on_page_writeback(dn.node_page, NODE, true); 497 498 err = f2fs_get_node_info(sbi, dn.nid, &ni); 499 if (err) 500 goto err; 501 502 f2fs_bug_on(sbi, ni.ino != ino_of_node(page)); 503 f2fs_bug_on(sbi, ofs_of_node(dn.node_page) != ofs_of_node(page)); 504 505 for (; start < end; start++, dn.ofs_in_node++) { 506 block_t src, dest; 507 508 src = datablock_addr(dn.inode, dn.node_page, dn.ofs_in_node); 509 dest = datablock_addr(dn.inode, page, dn.ofs_in_node); 510 511 /* skip recovering if dest is the same as src */ 512 if (src == dest) 513 continue; 514 515 /* dest is invalid, just invalidate src block */ 516 if (dest == NULL_ADDR) { 517 f2fs_truncate_data_blocks_range(&dn, 1); 518 continue; 519 } 520 521 if (!file_keep_isize(inode) && 522 (i_size_read(inode) <= ((loff_t)start << PAGE_SHIFT))) 523 f2fs_i_size_write(inode, 524 (loff_t)(start + 1) << PAGE_SHIFT); 525 526 /* 527 * dest is reserved block, invalidate src block 528 * and then reserve one new block in dnode page. 529 */ 530 if (dest == NEW_ADDR) { 531 f2fs_truncate_data_blocks_range(&dn, 1); 532 f2fs_reserve_new_block(&dn); 533 continue; 534 } 535 536 /* dest is valid block, try to recover from src to dest */ 537 if (f2fs_is_valid_blkaddr(sbi, dest, META_POR)) { 538 539 if (src == NULL_ADDR) { 540 err = f2fs_reserve_new_block(&dn); 541 while (err && 542 IS_ENABLED(CONFIG_F2FS_FAULT_INJECTION)) 543 err = f2fs_reserve_new_block(&dn); 544 /* We should not get -ENOSPC */ 545 f2fs_bug_on(sbi, err); 546 if (err) 547 goto err; 548 } 549 retry_prev: 550 /* Check the previous node page having this index */ 551 err = check_index_in_prev_nodes(sbi, dest, &dn); 552 if (err) { 553 if (err == -ENOMEM) { 554 congestion_wait(BLK_RW_ASYNC, HZ/50); 555 goto retry_prev; 556 } 557 goto err; 558 } 559 560 /* write dummy data page */ 561 f2fs_replace_block(sbi, &dn, src, dest, 562 ni.version, false, false); 563 recovered++; 564 } 565 } 566 567 copy_node_footer(dn.node_page, page); 568 fill_node_footer(dn.node_page, dn.nid, ni.ino, 569 ofs_of_node(page), false); 570 set_page_dirty(dn.node_page); 571 err: 572 f2fs_put_dnode(&dn); 573 out: 574 f2fs_msg(sbi->sb, KERN_NOTICE, 575 "recover_data: ino = %lx (i_size: %s) recovered = %d, err = %d", 576 inode->i_ino, 577 file_keep_isize(inode) ? "keep" : "recover", 578 recovered, err); 579 return err; 580 } 581 582 static int recover_data(struct f2fs_sb_info *sbi, struct list_head *inode_list, 583 struct list_head *dir_list) 584 { 585 struct curseg_info *curseg; 586 struct page *page = NULL; 587 int err = 0; 588 block_t blkaddr; 589 590 /* get node pages in the current segment */ 591 curseg = CURSEG_I(sbi, CURSEG_WARM_NODE); 592 blkaddr = NEXT_FREE_BLKADDR(sbi, curseg); 593 594 while (1) { 595 struct fsync_inode_entry *entry; 596 597 if (!f2fs_is_valid_blkaddr(sbi, blkaddr, META_POR)) 598 break; 599 600 f2fs_ra_meta_pages_cond(sbi, blkaddr); 601 602 page = f2fs_get_tmp_page(sbi, blkaddr); 603 if (IS_ERR(page)) { 604 err = PTR_ERR(page); 605 break; 606 } 607 608 if (!is_recoverable_dnode(page)) { 609 f2fs_put_page(page, 1); 610 break; 611 } 612 613 entry = get_fsync_inode(inode_list, ino_of_node(page)); 614 if (!entry) 615 goto next; 616 /* 617 * inode(x) | CP | inode(x) | dnode(F) 618 * In this case, we can lose the latest inode(x). 619 * So, call recover_inode for the inode update. 620 */ 621 if (IS_INODE(page)) 622 recover_inode(entry->inode, page); 623 if (entry->last_dentry == blkaddr) { 624 err = recover_dentry(entry->inode, page, dir_list); 625 if (err) { 626 f2fs_put_page(page, 1); 627 break; 628 } 629 } 630 err = do_recover_data(sbi, entry->inode, page); 631 if (err) { 632 f2fs_put_page(page, 1); 633 break; 634 } 635 636 if (entry->blkaddr == blkaddr) 637 del_fsync_inode(entry); 638 next: 639 /* check next segment */ 640 blkaddr = next_blkaddr_of_node(page); 641 f2fs_put_page(page, 1); 642 } 643 if (!err) 644 f2fs_allocate_new_segments(sbi); 645 return err; 646 } 647 648 int f2fs_recover_fsync_data(struct f2fs_sb_info *sbi, bool check_only) 649 { 650 struct list_head inode_list; 651 struct list_head dir_list; 652 int err; 653 int ret = 0; 654 unsigned long s_flags = sbi->sb->s_flags; 655 bool need_writecp = false; 656 #ifdef CONFIG_QUOTA 657 int quota_enabled; 658 #endif 659 660 if (s_flags & SB_RDONLY) { 661 f2fs_msg(sbi->sb, KERN_INFO, 662 "recover fsync data on readonly fs"); 663 sbi->sb->s_flags &= ~SB_RDONLY; 664 } 665 666 #ifdef CONFIG_QUOTA 667 /* Needed for iput() to work correctly and not trash data */ 668 sbi->sb->s_flags |= SB_ACTIVE; 669 /* Turn on quotas so that they are updated correctly */ 670 quota_enabled = f2fs_enable_quota_files(sbi, s_flags & SB_RDONLY); 671 #endif 672 673 fsync_entry_slab = f2fs_kmem_cache_create("f2fs_fsync_inode_entry", 674 sizeof(struct fsync_inode_entry)); 675 if (!fsync_entry_slab) { 676 err = -ENOMEM; 677 goto out; 678 } 679 680 INIT_LIST_HEAD(&inode_list); 681 INIT_LIST_HEAD(&dir_list); 682 683 /* prevent checkpoint */ 684 mutex_lock(&sbi->cp_mutex); 685 686 /* step #1: find fsynced inode numbers */ 687 err = find_fsync_dnodes(sbi, &inode_list, check_only); 688 if (err || list_empty(&inode_list)) 689 goto skip; 690 691 if (check_only) { 692 ret = 1; 693 goto skip; 694 } 695 696 need_writecp = true; 697 698 /* step #2: recover data */ 699 err = recover_data(sbi, &inode_list, &dir_list); 700 if (!err) 701 f2fs_bug_on(sbi, !list_empty(&inode_list)); 702 skip: 703 destroy_fsync_dnodes(&inode_list); 704 705 /* truncate meta pages to be used by the recovery */ 706 truncate_inode_pages_range(META_MAPPING(sbi), 707 (loff_t)MAIN_BLKADDR(sbi) << PAGE_SHIFT, -1); 708 709 if (err) { 710 truncate_inode_pages_final(NODE_MAPPING(sbi)); 711 truncate_inode_pages_final(META_MAPPING(sbi)); 712 } 713 714 clear_sbi_flag(sbi, SBI_POR_DOING); 715 mutex_unlock(&sbi->cp_mutex); 716 717 /* let's drop all the directory inodes for clean checkpoint */ 718 destroy_fsync_dnodes(&dir_list); 719 720 if (need_writecp) { 721 set_sbi_flag(sbi, SBI_IS_RECOVERED); 722 723 if (!err) { 724 struct cp_control cpc = { 725 .reason = CP_RECOVERY, 726 }; 727 err = f2fs_write_checkpoint(sbi, &cpc); 728 } 729 } 730 731 kmem_cache_destroy(fsync_entry_slab); 732 out: 733 #ifdef CONFIG_QUOTA 734 /* Turn quotas off */ 735 if (quota_enabled) 736 f2fs_quota_off_umount(sbi->sb); 737 #endif 738 sbi->sb->s_flags = s_flags; /* Restore SB_RDONLY status */ 739 740 return ret ? ret: err; 741 } 742