1// SPDX-License-Identifier: GPL-2.0 2/* 3 * fs/f2fs/checkpoint.c 4 * 5 * Copyright (c) 2012 Samsung Electronics Co., Ltd. 6 * http://www.samsung.com/ 7 */ 8#include <linux/fs.h> 9#include <linux/bio.h> 10#include <linux/mpage.h> 11#include <linux/writeback.h> 12#include <linux/blkdev.h> 13#include <linux/f2fs_fs.h> 14#include <linux/pagevec.h> 15#include <linux/swap.h> 16 17#include "f2fs.h" 18#include "node.h" 19#include "segment.h" 20#include "trace.h" 21#include <trace/events/f2fs.h> 22 23static struct kmem_cache *ino_entry_slab; 24struct kmem_cache *f2fs_inode_entry_slab; 25 26void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi, bool end_io) 27{ 28 f2fs_build_fault_attr(sbi, 0, 0); 29 set_ckpt_flags(sbi, CP_ERROR_FLAG); 30 if (!end_io) 31 f2fs_flush_merged_writes(sbi); 32} 33 34/* 35 * We guarantee no failure on the returned page. 36 */ 37struct page *f2fs_grab_meta_page(struct f2fs_sb_info *sbi, pgoff_t index) 38{ 39 struct address_space *mapping = META_MAPPING(sbi); 40 struct page *page = NULL; 41repeat: 42 page = f2fs_grab_cache_page(mapping, index, false); 43 if (!page) { 44 cond_resched(); 45 goto repeat; 46 } 47 f2fs_wait_on_page_writeback(page, META, true, true); 48 if (!PageUptodate(page)) 49 SetPageUptodate(page); 50 return page; 51} 52 53static struct page *__get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index, 54 bool is_meta) 55{ 56 struct address_space *mapping = META_MAPPING(sbi); 57 struct page *page; 58 struct f2fs_io_info fio = { 59 .sbi = sbi, 60 .type = META, 61 .op = REQ_OP_READ, 62 .op_flags = REQ_META | REQ_PRIO, 63 .old_blkaddr = index, 64 .new_blkaddr = index, 65 .encrypted_page = NULL, 66 .is_por = !is_meta, 67 }; 68 int err; 69 70 if (unlikely(!is_meta)) 71 fio.op_flags &= ~REQ_META; 72repeat: 73 page = f2fs_grab_cache_page(mapping, index, false); 74 if (!page) { 75 cond_resched(); 76 goto repeat; 77 } 78 if (PageUptodate(page)) 79 goto out; 80 81 fio.page = page; 82 83 err = f2fs_submit_page_bio(&fio); 84 if (err) { 85 f2fs_put_page(page, 1); 86 return ERR_PTR(err); 87 } 88 89 f2fs_update_iostat(sbi, FS_META_READ_IO, F2FS_BLKSIZE); 90 91 lock_page(page); 92 if (unlikely(page->mapping != mapping)) { 93 f2fs_put_page(page, 1); 94 goto repeat; 95 } 96 97 if (unlikely(!PageUptodate(page))) { 98 f2fs_put_page(page, 1); 99 return ERR_PTR(-EIO); 100 } 101out: 102 return page; 103} 104 105struct page *f2fs_get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index) 106{ 107 return __get_meta_page(sbi, index, true); 108} 109 110struct page *f2fs_get_meta_page_retry(struct f2fs_sb_info *sbi, pgoff_t index) 111{ 112 struct page *page; 113 int count = 0; 114 115retry: 116 page = __get_meta_page(sbi, index, true); 117 if (IS_ERR(page)) { 118 if (PTR_ERR(page) == -EIO && 119 ++count <= DEFAULT_RETRY_IO_COUNT) 120 goto retry; 121 f2fs_stop_checkpoint(sbi, false); 122 } 123 return page; 124} 125 126/* for POR only */ 127struct page *f2fs_get_tmp_page(struct f2fs_sb_info *sbi, pgoff_t index) 128{ 129 return __get_meta_page(sbi, index, false); 130} 131 132static bool __is_bitmap_valid(struct f2fs_sb_info *sbi, block_t blkaddr, 133 int type) 134{ 135 struct seg_entry *se; 136 unsigned int segno, offset; 137 bool exist; 138 139 if (type == DATA_GENERIC) 140 return true; 141 142 segno = GET_SEGNO(sbi, blkaddr); 143 offset = GET_BLKOFF_FROM_SEG0(sbi, blkaddr); 144 se = get_seg_entry(sbi, segno); 145 146 exist = f2fs_test_bit(offset, se->cur_valid_map); 147 if (exist && type == DATA_GENERIC_ENHANCE_UPDATE) { 148 f2fs_err(sbi, "Inconsistent error blkaddr:%u, sit bitmap:%d", 149 blkaddr, exist); 150 set_sbi_flag(sbi, SBI_NEED_FSCK); 151 return exist; 152 } 153 154 if (!exist && type == DATA_GENERIC_ENHANCE) { 155 f2fs_err(sbi, "Inconsistent error blkaddr:%u, sit bitmap:%d", 156 blkaddr, exist); 157 set_sbi_flag(sbi, SBI_NEED_FSCK); 158 dump_stack(); 159 } 160 return exist; 161} 162 163bool f2fs_is_valid_blkaddr(struct f2fs_sb_info *sbi, 164 block_t blkaddr, int type) 165{ 166 switch (type) { 167 case META_NAT: 168 break; 169 case META_SIT: 170 if (unlikely(blkaddr >= SIT_BLK_CNT(sbi))) 171 return false; 172 break; 173 case META_SSA: 174 if (unlikely(blkaddr >= MAIN_BLKADDR(sbi) || 175 blkaddr < SM_I(sbi)->ssa_blkaddr)) 176 return false; 177 break; 178 case META_CP: 179 if (unlikely(blkaddr >= SIT_I(sbi)->sit_base_addr || 180 blkaddr < __start_cp_addr(sbi))) 181 return false; 182 break; 183 case META_POR: 184 if (unlikely(blkaddr >= MAX_BLKADDR(sbi) || 185 blkaddr < MAIN_BLKADDR(sbi))) 186 return false; 187 break; 188 case DATA_GENERIC: 189 case DATA_GENERIC_ENHANCE: 190 case DATA_GENERIC_ENHANCE_READ: 191 case DATA_GENERIC_ENHANCE_UPDATE: 192 if (unlikely(blkaddr >= MAX_BLKADDR(sbi) || 193 blkaddr < MAIN_BLKADDR(sbi))) { 194 f2fs_warn(sbi, "access invalid blkaddr:%u", 195 blkaddr); 196 set_sbi_flag(sbi, SBI_NEED_FSCK); 197 dump_stack(); 198 return false; 199 } else { 200 return __is_bitmap_valid(sbi, blkaddr, type); 201 } 202 break; 203 case META_GENERIC: 204 if (unlikely(blkaddr < SEG0_BLKADDR(sbi) || 205 blkaddr >= MAIN_BLKADDR(sbi))) 206 return false; 207 break; 208 default: 209 BUG(); 210 } 211 212 return true; 213} 214 215/* 216 * Readahead CP/NAT/SIT/SSA/POR pages 217 */ 218int f2fs_ra_meta_pages(struct f2fs_sb_info *sbi, block_t start, int nrpages, 219 int type, bool sync) 220{ 221 struct page *page; 222 block_t blkno = start; 223 struct f2fs_io_info fio = { 224 .sbi = sbi, 225 .type = META, 226 .op = REQ_OP_READ, 227 .op_flags = sync ? (REQ_META | REQ_PRIO) : REQ_RAHEAD, 228 .encrypted_page = NULL, 229 .in_list = false, 230 .is_por = (type == META_POR), 231 }; 232 struct blk_plug plug; 233 int err; 234 235 if (unlikely(type == META_POR)) 236 fio.op_flags &= ~REQ_META; 237 238 blk_start_plug(&plug); 239 for (; nrpages-- > 0; blkno++) { 240 241 if (!f2fs_is_valid_blkaddr(sbi, blkno, type)) 242 goto out; 243 244 switch (type) { 245 case META_NAT: 246 if (unlikely(blkno >= 247 NAT_BLOCK_OFFSET(NM_I(sbi)->max_nid))) 248 blkno = 0; 249 /* get nat block addr */ 250 fio.new_blkaddr = current_nat_addr(sbi, 251 blkno * NAT_ENTRY_PER_BLOCK); 252 break; 253 case META_SIT: 254 if (unlikely(blkno >= TOTAL_SEGS(sbi))) 255 goto out; 256 /* get sit block addr */ 257 fio.new_blkaddr = current_sit_addr(sbi, 258 blkno * SIT_ENTRY_PER_BLOCK); 259 break; 260 case META_SSA: 261 case META_CP: 262 case META_POR: 263 fio.new_blkaddr = blkno; 264 break; 265 default: 266 BUG(); 267 } 268 269 page = f2fs_grab_cache_page(META_MAPPING(sbi), 270 fio.new_blkaddr, false); 271 if (!page) 272 continue; 273 if (PageUptodate(page)) { 274 f2fs_put_page(page, 1); 275 continue; 276 } 277 278 fio.page = page; 279 err = f2fs_submit_page_bio(&fio); 280 f2fs_put_page(page, err ? 1 : 0); 281 282 if (!err) 283 f2fs_update_iostat(sbi, FS_META_READ_IO, F2FS_BLKSIZE); 284 } 285out: 286 blk_finish_plug(&plug); 287 return blkno - start; 288} 289 290void f2fs_ra_meta_pages_cond(struct f2fs_sb_info *sbi, pgoff_t index) 291{ 292 struct page *page; 293 bool readahead = false; 294 295 page = find_get_page(META_MAPPING(sbi), index); 296 if (!page || !PageUptodate(page)) 297 readahead = true; 298 f2fs_put_page(page, 0); 299 300 if (readahead) 301 f2fs_ra_meta_pages(sbi, index, BIO_MAX_PAGES, META_POR, true); 302} 303 304static int __f2fs_write_meta_page(struct page *page, 305 struct writeback_control *wbc, 306 enum iostat_type io_type) 307{ 308 struct f2fs_sb_info *sbi = F2FS_P_SB(page); 309 310 trace_f2fs_writepage(page, META); 311 312 if (unlikely(f2fs_cp_error(sbi))) { 313 if (is_sbi_flag_set(sbi, SBI_IS_CLOSE)) { 314 ClearPageUptodate(page); 315 dec_page_count(sbi, F2FS_DIRTY_META); 316 unlock_page(page); 317 return 0; 318 } 319 goto redirty_out; 320 } 321 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 322 goto redirty_out; 323 if (wbc->for_reclaim && page->index < GET_SUM_BLOCK(sbi, 0)) 324 goto redirty_out; 325 326 f2fs_do_write_meta_page(sbi, page, io_type); 327 dec_page_count(sbi, F2FS_DIRTY_META); 328 329 if (wbc->for_reclaim) 330 f2fs_submit_merged_write_cond(sbi, NULL, page, 0, META); 331 332 unlock_page(page); 333 334 if (unlikely(f2fs_cp_error(sbi))) 335 f2fs_submit_merged_write(sbi, META); 336 337 return 0; 338 339redirty_out: 340 redirty_page_for_writepage(wbc, page); 341 return AOP_WRITEPAGE_ACTIVATE; 342} 343 344static int f2fs_write_meta_page(struct page *page, 345 struct writeback_control *wbc) 346{ 347 return __f2fs_write_meta_page(page, wbc, FS_META_IO); 348} 349 350static int f2fs_write_meta_pages(struct address_space *mapping, 351 struct writeback_control *wbc) 352{ 353 struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); 354 long diff, written; 355 356 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) 357 goto skip_write; 358 359 /* collect a number of dirty meta pages and write together */ 360 if (wbc->sync_mode != WB_SYNC_ALL && 361 get_pages(sbi, F2FS_DIRTY_META) < 362 nr_pages_to_skip(sbi, META)) 363 goto skip_write; 364 365 /* if locked failed, cp will flush dirty pages instead */ 366 if (!mutex_trylock(&sbi->cp_mutex)) 367 goto skip_write; 368 369 trace_f2fs_writepages(mapping->host, wbc, META); 370 diff = nr_pages_to_write(sbi, META, wbc); 371 written = f2fs_sync_meta_pages(sbi, META, wbc->nr_to_write, FS_META_IO); 372 mutex_unlock(&sbi->cp_mutex); 373 wbc->nr_to_write = max((long)0, wbc->nr_to_write - written - diff); 374 return 0; 375 376skip_write: 377 wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_META); 378 trace_f2fs_writepages(mapping->host, wbc, META); 379 return 0; 380} 381 382long f2fs_sync_meta_pages(struct f2fs_sb_info *sbi, enum page_type type, 383 long nr_to_write, enum iostat_type io_type) 384{ 385 struct address_space *mapping = META_MAPPING(sbi); 386 pgoff_t index = 0, prev = ULONG_MAX; 387 struct pagevec pvec; 388 long nwritten = 0; 389 int nr_pages; 390 struct writeback_control wbc = { 391 .for_reclaim = 0, 392 }; 393 struct blk_plug plug; 394 395 pagevec_init(&pvec); 396 397 blk_start_plug(&plug); 398 399 while ((nr_pages = pagevec_lookup_tag(&pvec, mapping, &index, 400 PAGECACHE_TAG_DIRTY))) { 401 int i; 402 403 for (i = 0; i < nr_pages; i++) { 404 struct page *page = pvec.pages[i]; 405 406 if (prev == ULONG_MAX) 407 prev = page->index - 1; 408 if (nr_to_write != LONG_MAX && page->index != prev + 1) { 409 pagevec_release(&pvec); 410 goto stop; 411 } 412 413 lock_page(page); 414 415 if (unlikely(page->mapping != mapping)) { 416continue_unlock: 417 unlock_page(page); 418 continue; 419 } 420 if (!PageDirty(page)) { 421 /* someone wrote it for us */ 422 goto continue_unlock; 423 } 424 425 f2fs_wait_on_page_writeback(page, META, true, true); 426 427 if (!clear_page_dirty_for_io(page)) 428 goto continue_unlock; 429 430 if (__f2fs_write_meta_page(page, &wbc, io_type)) { 431 unlock_page(page); 432 break; 433 } 434 nwritten++; 435 prev = page->index; 436 if (unlikely(nwritten >= nr_to_write)) 437 break; 438 } 439 pagevec_release(&pvec); 440 cond_resched(); 441 } 442stop: 443 if (nwritten) 444 f2fs_submit_merged_write(sbi, type); 445 446 blk_finish_plug(&plug); 447 448 return nwritten; 449} 450 451static int f2fs_set_meta_page_dirty(struct page *page) 452{ 453 trace_f2fs_set_page_dirty(page, META); 454 455 if (!PageUptodate(page)) 456 SetPageUptodate(page); 457 if (!PageDirty(page)) { 458 __set_page_dirty_nobuffers(page); 459 inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_META); 460 f2fs_set_page_private(page, 0); 461 f2fs_trace_pid(page); 462 return 1; 463 } 464 return 0; 465} 466 467const struct address_space_operations f2fs_meta_aops = { 468 .writepage = f2fs_write_meta_page, 469 .writepages = f2fs_write_meta_pages, 470 .set_page_dirty = f2fs_set_meta_page_dirty, 471 .invalidatepage = f2fs_invalidate_page, 472 .releasepage = f2fs_release_page, 473#ifdef CONFIG_MIGRATION 474 .migratepage = f2fs_migrate_page, 475#endif 476}; 477 478static void __add_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, 479 unsigned int devidx, int type) 480{ 481 struct inode_management *im = &sbi->im[type]; 482 struct ino_entry *e, *tmp; 483 484 tmp = f2fs_kmem_cache_alloc(ino_entry_slab, GFP_NOFS); 485 486 radix_tree_preload(GFP_NOFS | __GFP_NOFAIL); 487 488 spin_lock(&im->ino_lock); 489 e = radix_tree_lookup(&im->ino_root, ino); 490 if (!e) { 491 e = tmp; 492 if (unlikely(radix_tree_insert(&im->ino_root, ino, e))) 493 f2fs_bug_on(sbi, 1); 494 495 memset(e, 0, sizeof(struct ino_entry)); 496 e->ino = ino; 497 498 list_add_tail(&e->list, &im->ino_list); 499 if (type != ORPHAN_INO) 500 im->ino_num++; 501 } 502 503 if (type == FLUSH_INO) 504 f2fs_set_bit(devidx, (char *)&e->dirty_device); 505 506 spin_unlock(&im->ino_lock); 507 radix_tree_preload_end(); 508 509 if (e != tmp) 510 kmem_cache_free(ino_entry_slab, tmp); 511} 512 513static void __remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type) 514{ 515 struct inode_management *im = &sbi->im[type]; 516 struct ino_entry *e; 517 518 spin_lock(&im->ino_lock); 519 e = radix_tree_lookup(&im->ino_root, ino); 520 if (e) { 521 list_del(&e->list); 522 radix_tree_delete(&im->ino_root, ino); 523 im->ino_num--; 524 spin_unlock(&im->ino_lock); 525 kmem_cache_free(ino_entry_slab, e); 526 return; 527 } 528 spin_unlock(&im->ino_lock); 529} 530 531void f2fs_add_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type) 532{ 533 /* add new dirty ino entry into list */ 534 __add_ino_entry(sbi, ino, 0, type); 535} 536 537void f2fs_remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type) 538{ 539 /* remove dirty ino entry from list */ 540 __remove_ino_entry(sbi, ino, type); 541} 542 543/* mode should be APPEND_INO, UPDATE_INO or TRANS_DIR_INO */ 544bool f2fs_exist_written_data(struct f2fs_sb_info *sbi, nid_t ino, int mode) 545{ 546 struct inode_management *im = &sbi->im[mode]; 547 struct ino_entry *e; 548 549 spin_lock(&im->ino_lock); 550 e = radix_tree_lookup(&im->ino_root, ino); 551 spin_unlock(&im->ino_lock); 552 return e ? true : false; 553} 554 555void f2fs_release_ino_entry(struct f2fs_sb_info *sbi, bool all) 556{ 557 struct ino_entry *e, *tmp; 558 int i; 559 560 for (i = all ? ORPHAN_INO : APPEND_INO; i < MAX_INO_ENTRY; i++) { 561 struct inode_management *im = &sbi->im[i]; 562 563 spin_lock(&im->ino_lock); 564 list_for_each_entry_safe(e, tmp, &im->ino_list, list) { 565 list_del(&e->list); 566 radix_tree_delete(&im->ino_root, e->ino); 567 kmem_cache_free(ino_entry_slab, e); 568 im->ino_num--; 569 } 570 spin_unlock(&im->ino_lock); 571 } 572} 573 574void f2fs_set_dirty_device(struct f2fs_sb_info *sbi, nid_t ino, 575 unsigned int devidx, int type) 576{ 577 __add_ino_entry(sbi, ino, devidx, type); 578} 579 580bool f2fs_is_dirty_device(struct f2fs_sb_info *sbi, nid_t ino, 581 unsigned int devidx, int type) 582{ 583 struct inode_management *im = &sbi->im[type]; 584 struct ino_entry *e; 585 bool is_dirty = false; 586 587 spin_lock(&im->ino_lock); 588 e = radix_tree_lookup(&im->ino_root, ino); 589 if (e && f2fs_test_bit(devidx, (char *)&e->dirty_device)) 590 is_dirty = true; 591 spin_unlock(&im->ino_lock); 592 return is_dirty; 593} 594 595int f2fs_acquire_orphan_inode(struct f2fs_sb_info *sbi) 596{ 597 struct inode_management *im = &sbi->im[ORPHAN_INO]; 598 int err = 0; 599 600 spin_lock(&im->ino_lock); 601 602 if (time_to_inject(sbi, FAULT_ORPHAN)) { 603 spin_unlock(&im->ino_lock); 604 f2fs_show_injection_info(sbi, FAULT_ORPHAN); 605 return -ENOSPC; 606 } 607 608 if (unlikely(im->ino_num >= sbi->max_orphans)) 609 err = -ENOSPC; 610 else 611 im->ino_num++; 612 spin_unlock(&im->ino_lock); 613 614 return err; 615} 616 617void f2fs_release_orphan_inode(struct f2fs_sb_info *sbi) 618{ 619 struct inode_management *im = &sbi->im[ORPHAN_INO]; 620 621 spin_lock(&im->ino_lock); 622 f2fs_bug_on(sbi, im->ino_num == 0); 623 im->ino_num--; 624 spin_unlock(&im->ino_lock); 625} 626 627void f2fs_add_orphan_inode(struct inode *inode) 628{ 629 /* add new orphan ino entry into list */ 630 __add_ino_entry(F2FS_I_SB(inode), inode->i_ino, 0, ORPHAN_INO); 631 f2fs_update_inode_page(inode); 632} 633 634void f2fs_remove_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino) 635{ 636 /* remove orphan entry from orphan list */ 637 __remove_ino_entry(sbi, ino, ORPHAN_INO); 638} 639 640static int recover_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino) 641{ 642 struct inode *inode; 643 struct node_info ni; 644 int err; 645 646 inode = f2fs_iget_retry(sbi->sb, ino); 647 if (IS_ERR(inode)) { 648 /* 649 * there should be a bug that we can't find the entry 650 * to orphan inode. 651 */ 652 f2fs_bug_on(sbi, PTR_ERR(inode) == -ENOENT); 653 return PTR_ERR(inode); 654 } 655 656 err = dquot_initialize(inode); 657 if (err) { 658 iput(inode); 659 goto err_out; 660 } 661 662 clear_nlink(inode); 663 664 /* truncate all the data during iput */ 665 iput(inode); 666 667 err = f2fs_get_node_info(sbi, ino, &ni); 668 if (err) 669 goto err_out; 670 671 /* ENOMEM was fully retried in f2fs_evict_inode. */ 672 if (ni.blk_addr != NULL_ADDR) { 673 err = -EIO; 674 goto err_out; 675 } 676 return 0; 677 678err_out: 679 set_sbi_flag(sbi, SBI_NEED_FSCK); 680 f2fs_warn(sbi, "%s: orphan failed (ino=%x), run fsck to fix.", 681 __func__, ino); 682 return err; 683} 684 685int f2fs_recover_orphan_inodes(struct f2fs_sb_info *sbi) 686{ 687 block_t start_blk, orphan_blocks, i, j; 688 unsigned int s_flags = sbi->sb->s_flags; 689 int err = 0; 690#ifdef CONFIG_QUOTA 691 int quota_enabled; 692#endif 693 694 if (!is_set_ckpt_flags(sbi, CP_ORPHAN_PRESENT_FLAG)) 695 return 0; 696 697 if (bdev_read_only(sbi->sb->s_bdev)) { 698 f2fs_info(sbi, "write access unavailable, skipping orphan cleanup"); 699 return 0; 700 } 701 702 if (s_flags & SB_RDONLY) { 703 f2fs_info(sbi, "orphan cleanup on readonly fs"); 704 sbi->sb->s_flags &= ~SB_RDONLY; 705 } 706 707#ifdef CONFIG_QUOTA 708 /* Needed for iput() to work correctly and not trash data */ 709 sbi->sb->s_flags |= SB_ACTIVE; 710 711 /* 712 * Turn on quotas which were not enabled for read-only mounts if 713 * filesystem has quota feature, so that they are updated correctly. 714 */ 715 quota_enabled = f2fs_enable_quota_files(sbi, s_flags & SB_RDONLY); 716#endif 717 718 start_blk = __start_cp_addr(sbi) + 1 + __cp_payload(sbi); 719 orphan_blocks = __start_sum_addr(sbi) - 1 - __cp_payload(sbi); 720 721 f2fs_ra_meta_pages(sbi, start_blk, orphan_blocks, META_CP, true); 722 723 for (i = 0; i < orphan_blocks; i++) { 724 struct page *page; 725 struct f2fs_orphan_block *orphan_blk; 726 727 page = f2fs_get_meta_page(sbi, start_blk + i); 728 if (IS_ERR(page)) { 729 err = PTR_ERR(page); 730 goto out; 731 } 732 733 orphan_blk = (struct f2fs_orphan_block *)page_address(page); 734 for (j = 0; j < le32_to_cpu(orphan_blk->entry_count); j++) { 735 nid_t ino = le32_to_cpu(orphan_blk->ino[j]); 736 err = recover_orphan_inode(sbi, ino); 737 if (err) { 738 f2fs_put_page(page, 1); 739 goto out; 740 } 741 } 742 f2fs_put_page(page, 1); 743 } 744 /* clear Orphan Flag */ 745 clear_ckpt_flags(sbi, CP_ORPHAN_PRESENT_FLAG); 746out: 747 set_sbi_flag(sbi, SBI_IS_RECOVERED); 748 749#ifdef CONFIG_QUOTA 750 /* Turn quotas off */ 751 if (quota_enabled) 752 f2fs_quota_off_umount(sbi->sb); 753#endif 754 sbi->sb->s_flags = s_flags; /* Restore SB_RDONLY status */ 755 756 return err; 757} 758 759static void write_orphan_inodes(struct f2fs_sb_info *sbi, block_t start_blk) 760{ 761 struct list_head *head; 762 struct f2fs_orphan_block *orphan_blk = NULL; 763 unsigned int nentries = 0; 764 unsigned short index = 1; 765 unsigned short orphan_blocks; 766 struct page *page = NULL; 767 struct ino_entry *orphan = NULL; 768 struct inode_management *im = &sbi->im[ORPHAN_INO]; 769 770 orphan_blocks = GET_ORPHAN_BLOCKS(im->ino_num); 771 772 /* 773 * we don't need to do spin_lock(&im->ino_lock) here, since all the 774 * orphan inode operations are covered under f2fs_lock_op(). 775 * And, spin_lock should be avoided due to page operations below. 776 */ 777 head = &im->ino_list; 778 779 /* loop for each orphan inode entry and write them in Jornal block */ 780 list_for_each_entry(orphan, head, list) { 781 if (!page) { 782 page = f2fs_grab_meta_page(sbi, start_blk++); 783 orphan_blk = 784 (struct f2fs_orphan_block *)page_address(page); 785 memset(orphan_blk, 0, sizeof(*orphan_blk)); 786 } 787 788 orphan_blk->ino[nentries++] = cpu_to_le32(orphan->ino); 789 790 if (nentries == F2FS_ORPHANS_PER_BLOCK) { 791 /* 792 * an orphan block is full of 1020 entries, 793 * then we need to flush current orphan blocks 794 * and bring another one in memory 795 */ 796 orphan_blk->blk_addr = cpu_to_le16(index); 797 orphan_blk->blk_count = cpu_to_le16(orphan_blocks); 798 orphan_blk->entry_count = cpu_to_le32(nentries); 799 set_page_dirty(page); 800 f2fs_put_page(page, 1); 801 index++; 802 nentries = 0; 803 page = NULL; 804 } 805 } 806 807 if (page) { 808 orphan_blk->blk_addr = cpu_to_le16(index); 809 orphan_blk->blk_count = cpu_to_le16(orphan_blocks); 810 orphan_blk->entry_count = cpu_to_le32(nentries); 811 set_page_dirty(page); 812 f2fs_put_page(page, 1); 813 } 814} 815 816static __u32 f2fs_checkpoint_chksum(struct f2fs_sb_info *sbi, 817 struct f2fs_checkpoint *ckpt) 818{ 819 unsigned int chksum_ofs = le32_to_cpu(ckpt->checksum_offset); 820 __u32 chksum; 821 822 chksum = f2fs_crc32(sbi, ckpt, chksum_ofs); 823 if (chksum_ofs < CP_CHKSUM_OFFSET) { 824 chksum_ofs += sizeof(chksum); 825 chksum = f2fs_chksum(sbi, chksum, (__u8 *)ckpt + chksum_ofs, 826 F2FS_BLKSIZE - chksum_ofs); 827 } 828 return chksum; 829} 830 831static int get_checkpoint_version(struct f2fs_sb_info *sbi, block_t cp_addr, 832 struct f2fs_checkpoint **cp_block, struct page **cp_page, 833 unsigned long long *version) 834{ 835 size_t crc_offset = 0; 836 __u32 crc; 837 838 *cp_page = f2fs_get_meta_page(sbi, cp_addr); 839 if (IS_ERR(*cp_page)) 840 return PTR_ERR(*cp_page); 841 842 *cp_block = (struct f2fs_checkpoint *)page_address(*cp_page); 843 844 crc_offset = le32_to_cpu((*cp_block)->checksum_offset); 845 if (crc_offset < CP_MIN_CHKSUM_OFFSET || 846 crc_offset > CP_CHKSUM_OFFSET) { 847 f2fs_put_page(*cp_page, 1); 848 f2fs_warn(sbi, "invalid crc_offset: %zu", crc_offset); 849 return -EINVAL; 850 } 851 852 crc = f2fs_checkpoint_chksum(sbi, *cp_block); 853 if (crc != cur_cp_crc(*cp_block)) { 854 f2fs_put_page(*cp_page, 1); 855 f2fs_warn(sbi, "invalid crc value"); 856 return -EINVAL; 857 } 858 859 *version = cur_cp_version(*cp_block); 860 return 0; 861} 862 863static struct page *validate_checkpoint(struct f2fs_sb_info *sbi, 864 block_t cp_addr, unsigned long long *version) 865{ 866 struct page *cp_page_1 = NULL, *cp_page_2 = NULL; 867 struct f2fs_checkpoint *cp_block = NULL; 868 unsigned long long cur_version = 0, pre_version = 0; 869 unsigned int cp_blocks; 870 int err; 871 872 err = get_checkpoint_version(sbi, cp_addr, &cp_block, 873 &cp_page_1, version); 874 if (err) 875 return NULL; 876 877 cp_blocks = le32_to_cpu(cp_block->cp_pack_total_block_count); 878 879 if (cp_blocks > sbi->blocks_per_seg || cp_blocks <= F2FS_CP_PACKS) { 880 f2fs_warn(sbi, "invalid cp_pack_total_block_count:%u", 881 le32_to_cpu(cp_block->cp_pack_total_block_count)); 882 goto invalid_cp; 883 } 884 pre_version = *version; 885 886 cp_addr += cp_blocks - 1; 887 err = get_checkpoint_version(sbi, cp_addr, &cp_block, 888 &cp_page_2, version); 889 if (err) 890 goto invalid_cp; 891 cur_version = *version; 892 893 if (cur_version == pre_version) { 894 *version = cur_version; 895 f2fs_put_page(cp_page_2, 1); 896 return cp_page_1; 897 } 898 f2fs_put_page(cp_page_2, 1); 899invalid_cp: 900 f2fs_put_page(cp_page_1, 1); 901 return NULL; 902} 903 904int f2fs_get_valid_checkpoint(struct f2fs_sb_info *sbi) 905{ 906 struct f2fs_checkpoint *cp_block; 907 struct f2fs_super_block *fsb = sbi->raw_super; 908 struct page *cp1, *cp2, *cur_page; 909 unsigned long blk_size = sbi->blocksize; 910 unsigned long long cp1_version = 0, cp2_version = 0; 911 unsigned long long cp_start_blk_no; 912 unsigned int cp_blks = 1 + __cp_payload(sbi); 913 block_t cp_blk_no; 914 int i; 915 int err; 916 917 sbi->ckpt = f2fs_kvzalloc(sbi, array_size(blk_size, cp_blks), 918 GFP_KERNEL); 919 if (!sbi->ckpt) 920 return -ENOMEM; 921 /* 922 * Finding out valid cp block involves read both 923 * sets( cp pack 1 and cp pack 2) 924 */ 925 cp_start_blk_no = le32_to_cpu(fsb->cp_blkaddr); 926 cp1 = validate_checkpoint(sbi, cp_start_blk_no, &cp1_version); 927 928 /* The second checkpoint pack should start at the next segment */ 929 cp_start_blk_no += ((unsigned long long)1) << 930 le32_to_cpu(fsb->log_blocks_per_seg); 931 cp2 = validate_checkpoint(sbi, cp_start_blk_no, &cp2_version); 932 933 if (cp1 && cp2) { 934 if (ver_after(cp2_version, cp1_version)) 935 cur_page = cp2; 936 else 937 cur_page = cp1; 938 } else if (cp1) { 939 cur_page = cp1; 940 } else if (cp2) { 941 cur_page = cp2; 942 } else { 943 err = -EFSCORRUPTED; 944 goto fail_no_cp; 945 } 946 947 cp_block = (struct f2fs_checkpoint *)page_address(cur_page); 948 memcpy(sbi->ckpt, cp_block, blk_size); 949 950 if (cur_page == cp1) 951 sbi->cur_cp_pack = 1; 952 else 953 sbi->cur_cp_pack = 2; 954 955 /* Sanity checking of checkpoint */ 956 if (f2fs_sanity_check_ckpt(sbi)) { 957 err = -EFSCORRUPTED; 958 goto free_fail_no_cp; 959 } 960 961 if (cp_blks <= 1) 962 goto done; 963 964 cp_blk_no = le32_to_cpu(fsb->cp_blkaddr); 965 if (cur_page == cp2) 966 cp_blk_no += 1 << le32_to_cpu(fsb->log_blocks_per_seg); 967 968 for (i = 1; i < cp_blks; i++) { 969 void *sit_bitmap_ptr; 970 unsigned char *ckpt = (unsigned char *)sbi->ckpt; 971 972 cur_page = f2fs_get_meta_page(sbi, cp_blk_no + i); 973 if (IS_ERR(cur_page)) { 974 err = PTR_ERR(cur_page); 975 goto free_fail_no_cp; 976 } 977 sit_bitmap_ptr = page_address(cur_page); 978 memcpy(ckpt + i * blk_size, sit_bitmap_ptr, blk_size); 979 f2fs_put_page(cur_page, 1); 980 } 981done: 982 f2fs_put_page(cp1, 1); 983 f2fs_put_page(cp2, 1); 984 return 0; 985 986free_fail_no_cp: 987 f2fs_put_page(cp1, 1); 988 f2fs_put_page(cp2, 1); 989fail_no_cp: 990 kvfree(sbi->ckpt); 991 return err; 992} 993 994static void __add_dirty_inode(struct inode *inode, enum inode_type type) 995{ 996 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 997 int flag = (type == DIR_INODE) ? FI_DIRTY_DIR : FI_DIRTY_FILE; 998 999 if (is_inode_flag_set(inode, flag)) 1000 return; 1001 1002 set_inode_flag(inode, flag); 1003 if (!f2fs_is_volatile_file(inode)) 1004 list_add_tail(&F2FS_I(inode)->dirty_list, 1005 &sbi->inode_list[type]); 1006 stat_inc_dirty_inode(sbi, type); 1007} 1008 1009static void __remove_dirty_inode(struct inode *inode, enum inode_type type) 1010{ 1011 int flag = (type == DIR_INODE) ? FI_DIRTY_DIR : FI_DIRTY_FILE; 1012 1013 if (get_dirty_pages(inode) || !is_inode_flag_set(inode, flag)) 1014 return; 1015 1016 list_del_init(&F2FS_I(inode)->dirty_list); 1017 clear_inode_flag(inode, flag); 1018 stat_dec_dirty_inode(F2FS_I_SB(inode), type); 1019} 1020 1021void f2fs_update_dirty_page(struct inode *inode, struct page *page) 1022{ 1023 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1024 enum inode_type type = S_ISDIR(inode->i_mode) ? DIR_INODE : FILE_INODE; 1025 1026 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) && 1027 !S_ISLNK(inode->i_mode)) 1028 return; 1029 1030 spin_lock(&sbi->inode_lock[type]); 1031 if (type != FILE_INODE || test_opt(sbi, DATA_FLUSH)) 1032 __add_dirty_inode(inode, type); 1033 inode_inc_dirty_pages(inode); 1034 spin_unlock(&sbi->inode_lock[type]); 1035 1036 f2fs_set_page_private(page, 0); 1037 f2fs_trace_pid(page); 1038} 1039 1040void f2fs_remove_dirty_inode(struct inode *inode) 1041{ 1042 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 1043 enum inode_type type = S_ISDIR(inode->i_mode) ? DIR_INODE : FILE_INODE; 1044 1045 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) && 1046 !S_ISLNK(inode->i_mode)) 1047 return; 1048 1049 if (type == FILE_INODE && !test_opt(sbi, DATA_FLUSH)) 1050 return; 1051 1052 spin_lock(&sbi->inode_lock[type]); 1053 __remove_dirty_inode(inode, type); 1054 spin_unlock(&sbi->inode_lock[type]); 1055} 1056 1057int f2fs_sync_dirty_inodes(struct f2fs_sb_info *sbi, enum inode_type type, 1058 bool from_cp) 1059{ 1060 struct list_head *head; 1061 struct inode *inode; 1062 struct f2fs_inode_info *fi; 1063 bool is_dir = (type == DIR_INODE); 1064 unsigned long ino = 0; 1065 1066 trace_f2fs_sync_dirty_inodes_enter(sbi->sb, is_dir, 1067 get_pages(sbi, is_dir ? 1068 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA)); 1069retry: 1070 if (unlikely(f2fs_cp_error(sbi))) { 1071 trace_f2fs_sync_dirty_inodes_exit(sbi->sb, is_dir, 1072 get_pages(sbi, is_dir ? 1073 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA)); 1074 return -EIO; 1075 } 1076 1077 spin_lock(&sbi->inode_lock[type]); 1078 1079 head = &sbi->inode_list[type]; 1080 if (list_empty(head)) { 1081 spin_unlock(&sbi->inode_lock[type]); 1082 trace_f2fs_sync_dirty_inodes_exit(sbi->sb, is_dir, 1083 get_pages(sbi, is_dir ? 1084 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA)); 1085 return 0; 1086 } 1087 fi = list_first_entry(head, struct f2fs_inode_info, dirty_list); 1088 inode = igrab(&fi->vfs_inode); 1089 spin_unlock(&sbi->inode_lock[type]); 1090 if (inode) { 1091 unsigned long cur_ino = inode->i_ino; 1092 1093 if (from_cp) 1094 F2FS_I(inode)->cp_task = current; 1095 F2FS_I(inode)->wb_task = current; 1096 1097 filemap_fdatawrite(inode->i_mapping); 1098 1099 F2FS_I(inode)->wb_task = NULL; 1100 if (from_cp) 1101 F2FS_I(inode)->cp_task = NULL; 1102 1103 iput(inode); 1104 /* We need to give cpu to another writers. */ 1105 if (ino == cur_ino) 1106 cond_resched(); 1107 else 1108 ino = cur_ino; 1109 } else { 1110 /* 1111 * We should submit bio, since it exists several 1112 * wribacking dentry pages in the freeing inode. 1113 */ 1114 f2fs_submit_merged_write(sbi, DATA); 1115 cond_resched(); 1116 } 1117 goto retry; 1118} 1119 1120int f2fs_sync_inode_meta(struct f2fs_sb_info *sbi) 1121{ 1122 struct list_head *head = &sbi->inode_list[DIRTY_META]; 1123 struct inode *inode; 1124 struct f2fs_inode_info *fi; 1125 s64 total = get_pages(sbi, F2FS_DIRTY_IMETA); 1126 1127 while (total--) { 1128 if (unlikely(f2fs_cp_error(sbi))) 1129 return -EIO; 1130 1131 spin_lock(&sbi->inode_lock[DIRTY_META]); 1132 if (list_empty(head)) { 1133 spin_unlock(&sbi->inode_lock[DIRTY_META]); 1134 return 0; 1135 } 1136 fi = list_first_entry(head, struct f2fs_inode_info, 1137 gdirty_list); 1138 inode = igrab(&fi->vfs_inode); 1139 spin_unlock(&sbi->inode_lock[DIRTY_META]); 1140 if (inode) { 1141 sync_inode_metadata(inode, 0); 1142 1143 /* it's on eviction */ 1144 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) 1145 f2fs_update_inode_page(inode); 1146 iput(inode); 1147 } 1148 } 1149 return 0; 1150} 1151 1152static void __prepare_cp_block(struct f2fs_sb_info *sbi) 1153{ 1154 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 1155 struct f2fs_nm_info *nm_i = NM_I(sbi); 1156 nid_t last_nid = nm_i->next_scan_nid; 1157 1158 next_free_nid(sbi, &last_nid); 1159 ckpt->valid_block_count = cpu_to_le64(valid_user_blocks(sbi)); 1160 ckpt->valid_node_count = cpu_to_le32(valid_node_count(sbi)); 1161 ckpt->valid_inode_count = cpu_to_le32(valid_inode_count(sbi)); 1162 ckpt->next_free_nid = cpu_to_le32(last_nid); 1163} 1164 1165static bool __need_flush_quota(struct f2fs_sb_info *sbi) 1166{ 1167 bool ret = false; 1168 1169 if (!is_journalled_quota(sbi)) 1170 return false; 1171 1172 if (!down_write_trylock(&sbi->quota_sem)) 1173 return true; 1174 if (is_sbi_flag_set(sbi, SBI_QUOTA_SKIP_FLUSH)) { 1175 ret = false; 1176 } else if (is_sbi_flag_set(sbi, SBI_QUOTA_NEED_REPAIR)) { 1177 ret = false; 1178 } else if (is_sbi_flag_set(sbi, SBI_QUOTA_NEED_FLUSH)) { 1179 clear_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH); 1180 ret = true; 1181 } else if (get_pages(sbi, F2FS_DIRTY_QDATA)) { 1182 ret = true; 1183 } 1184 up_write(&sbi->quota_sem); 1185 return ret; 1186} 1187 1188/* 1189 * Freeze all the FS-operations for checkpoint. 1190 */ 1191static int block_operations(struct f2fs_sb_info *sbi) 1192{ 1193 struct writeback_control wbc = { 1194 .sync_mode = WB_SYNC_ALL, 1195 .nr_to_write = LONG_MAX, 1196 .for_reclaim = 0, 1197 }; 1198 int err = 0, cnt = 0; 1199 1200 /* 1201 * Let's flush inline_data in dirty node pages. 1202 */ 1203 f2fs_flush_inline_data(sbi); 1204 1205retry_flush_quotas: 1206 f2fs_lock_all(sbi); 1207 if (__need_flush_quota(sbi)) { 1208 int locked; 1209 1210 if (++cnt > DEFAULT_RETRY_QUOTA_FLUSH_COUNT) { 1211 set_sbi_flag(sbi, SBI_QUOTA_SKIP_FLUSH); 1212 set_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH); 1213 goto retry_flush_dents; 1214 } 1215 f2fs_unlock_all(sbi); 1216 1217 /* only failed during mount/umount/freeze/quotactl */ 1218 locked = down_read_trylock(&sbi->sb->s_umount); 1219 f2fs_quota_sync(sbi->sb, -1); 1220 if (locked) 1221 up_read(&sbi->sb->s_umount); 1222 cond_resched(); 1223 goto retry_flush_quotas; 1224 } 1225 1226retry_flush_dents: 1227 /* write all the dirty dentry pages */ 1228 if (get_pages(sbi, F2FS_DIRTY_DENTS)) { 1229 f2fs_unlock_all(sbi); 1230 err = f2fs_sync_dirty_inodes(sbi, DIR_INODE, true); 1231 if (err) 1232 return err; 1233 cond_resched(); 1234 goto retry_flush_quotas; 1235 } 1236 1237 /* 1238 * POR: we should ensure that there are no dirty node pages 1239 * until finishing nat/sit flush. inode->i_blocks can be updated. 1240 */ 1241 down_write(&sbi->node_change); 1242 1243 if (get_pages(sbi, F2FS_DIRTY_IMETA)) { 1244 up_write(&sbi->node_change); 1245 f2fs_unlock_all(sbi); 1246 err = f2fs_sync_inode_meta(sbi); 1247 if (err) 1248 return err; 1249 cond_resched(); 1250 goto retry_flush_quotas; 1251 } 1252 1253retry_flush_nodes: 1254 down_write(&sbi->node_write); 1255 1256 if (get_pages(sbi, F2FS_DIRTY_NODES)) { 1257 up_write(&sbi->node_write); 1258 atomic_inc(&sbi->wb_sync_req[NODE]); 1259 err = f2fs_sync_node_pages(sbi, &wbc, false, FS_CP_NODE_IO); 1260 atomic_dec(&sbi->wb_sync_req[NODE]); 1261 if (err) { 1262 up_write(&sbi->node_change); 1263 f2fs_unlock_all(sbi); 1264 return err; 1265 } 1266 cond_resched(); 1267 goto retry_flush_nodes; 1268 } 1269 1270 /* 1271 * sbi->node_change is used only for AIO write_begin path which produces 1272 * dirty node blocks and some checkpoint values by block allocation. 1273 */ 1274 __prepare_cp_block(sbi); 1275 up_write(&sbi->node_change); 1276 return err; 1277} 1278 1279static void unblock_operations(struct f2fs_sb_info *sbi) 1280{ 1281 up_write(&sbi->node_write); 1282 f2fs_unlock_all(sbi); 1283} 1284 1285void f2fs_wait_on_all_pages(struct f2fs_sb_info *sbi, int type) 1286{ 1287 DEFINE_WAIT(wait); 1288 1289 for (;;) { 1290 if (!get_pages(sbi, type)) 1291 break; 1292 1293 if (unlikely(f2fs_cp_error(sbi) && 1294 !is_sbi_flag_set(sbi, SBI_IS_CLOSE))) 1295 break; 1296 1297 if (type == F2FS_DIRTY_META) 1298 f2fs_sync_meta_pages(sbi, META, LONG_MAX, 1299 FS_CP_META_IO); 1300 else if (type == F2FS_WB_CP_DATA) 1301 f2fs_submit_merged_write(sbi, DATA); 1302 1303 prepare_to_wait(&sbi->cp_wait, &wait, TASK_UNINTERRUPTIBLE); 1304 io_schedule_timeout(DEFAULT_IO_TIMEOUT); 1305 } 1306 finish_wait(&sbi->cp_wait, &wait); 1307} 1308 1309static void update_ckpt_flags(struct f2fs_sb_info *sbi, struct cp_control *cpc) 1310{ 1311 unsigned long orphan_num = sbi->im[ORPHAN_INO].ino_num; 1312 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 1313 unsigned long flags; 1314 1315 spin_lock_irqsave(&sbi->cp_lock, flags); 1316 1317 if ((cpc->reason & CP_UMOUNT) && 1318 le32_to_cpu(ckpt->cp_pack_total_block_count) > 1319 sbi->blocks_per_seg - NM_I(sbi)->nat_bits_blocks) 1320 disable_nat_bits(sbi, false); 1321 1322 if (cpc->reason & CP_TRIMMED) 1323 __set_ckpt_flags(ckpt, CP_TRIMMED_FLAG); 1324 else 1325 __clear_ckpt_flags(ckpt, CP_TRIMMED_FLAG); 1326 1327 if (cpc->reason & CP_UMOUNT) 1328 __set_ckpt_flags(ckpt, CP_UMOUNT_FLAG); 1329 else 1330 __clear_ckpt_flags(ckpt, CP_UMOUNT_FLAG); 1331 1332 if (cpc->reason & CP_FASTBOOT) 1333 __set_ckpt_flags(ckpt, CP_FASTBOOT_FLAG); 1334 else 1335 __clear_ckpt_flags(ckpt, CP_FASTBOOT_FLAG); 1336 1337 if (orphan_num) 1338 __set_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG); 1339 else 1340 __clear_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG); 1341 1342 if (is_sbi_flag_set(sbi, SBI_NEED_FSCK)) 1343 __set_ckpt_flags(ckpt, CP_FSCK_FLAG); 1344 1345 if (is_sbi_flag_set(sbi, SBI_IS_RESIZEFS)) 1346 __set_ckpt_flags(ckpt, CP_RESIZEFS_FLAG); 1347 else 1348 __clear_ckpt_flags(ckpt, CP_RESIZEFS_FLAG); 1349 1350 if (is_sbi_flag_set(sbi, SBI_CP_DISABLED)) 1351 __set_ckpt_flags(ckpt, CP_DISABLED_FLAG); 1352 else 1353 __clear_ckpt_flags(ckpt, CP_DISABLED_FLAG); 1354 1355 if (is_sbi_flag_set(sbi, SBI_CP_DISABLED_QUICK)) 1356 __set_ckpt_flags(ckpt, CP_DISABLED_QUICK_FLAG); 1357 else 1358 __clear_ckpt_flags(ckpt, CP_DISABLED_QUICK_FLAG); 1359 1360 if (is_sbi_flag_set(sbi, SBI_QUOTA_SKIP_FLUSH)) 1361 __set_ckpt_flags(ckpt, CP_QUOTA_NEED_FSCK_FLAG); 1362 else 1363 __clear_ckpt_flags(ckpt, CP_QUOTA_NEED_FSCK_FLAG); 1364 1365 if (is_sbi_flag_set(sbi, SBI_QUOTA_NEED_REPAIR)) 1366 __set_ckpt_flags(ckpt, CP_QUOTA_NEED_FSCK_FLAG); 1367 1368 /* set this flag to activate crc|cp_ver for recovery */ 1369 __set_ckpt_flags(ckpt, CP_CRC_RECOVERY_FLAG); 1370 __clear_ckpt_flags(ckpt, CP_NOCRC_RECOVERY_FLAG); 1371 1372 spin_unlock_irqrestore(&sbi->cp_lock, flags); 1373} 1374 1375static void commit_checkpoint(struct f2fs_sb_info *sbi, 1376 void *src, block_t blk_addr) 1377{ 1378 struct writeback_control wbc = { 1379 .for_reclaim = 0, 1380 }; 1381 1382 /* 1383 * pagevec_lookup_tag and lock_page again will take 1384 * some extra time. Therefore, f2fs_update_meta_pages and 1385 * f2fs_sync_meta_pages are combined in this function. 1386 */ 1387 struct page *page = f2fs_grab_meta_page(sbi, blk_addr); 1388 int err; 1389 1390 f2fs_wait_on_page_writeback(page, META, true, true); 1391 1392 memcpy(page_address(page), src, PAGE_SIZE); 1393 1394 set_page_dirty(page); 1395 if (unlikely(!clear_page_dirty_for_io(page))) 1396 f2fs_bug_on(sbi, 1); 1397 1398 /* writeout cp pack 2 page */ 1399 err = __f2fs_write_meta_page(page, &wbc, FS_CP_META_IO); 1400 if (unlikely(err && f2fs_cp_error(sbi))) { 1401 f2fs_put_page(page, 1); 1402 return; 1403 } 1404 1405 f2fs_bug_on(sbi, err); 1406 f2fs_put_page(page, 0); 1407 1408 /* submit checkpoint (with barrier if NOBARRIER is not set) */ 1409 f2fs_submit_merged_write(sbi, META_FLUSH); 1410} 1411 1412static int do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc) 1413{ 1414 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 1415 struct f2fs_nm_info *nm_i = NM_I(sbi); 1416 unsigned long orphan_num = sbi->im[ORPHAN_INO].ino_num, flags; 1417 block_t start_blk; 1418 unsigned int data_sum_blocks, orphan_blocks; 1419 __u32 crc32 = 0; 1420 int i; 1421 int cp_payload_blks = __cp_payload(sbi); 1422 struct super_block *sb = sbi->sb; 1423 struct curseg_info *seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE); 1424 u64 kbytes_written; 1425 int err; 1426 1427 /* Flush all the NAT/SIT pages */ 1428 f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_CP_META_IO); 1429 1430 /* start to update checkpoint, cp ver is already updated previously */ 1431 ckpt->elapsed_time = cpu_to_le64(get_mtime(sbi, true)); 1432 ckpt->free_segment_count = cpu_to_le32(free_segments(sbi)); 1433 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) { 1434 ckpt->cur_node_segno[i] = 1435 cpu_to_le32(curseg_segno(sbi, i + CURSEG_HOT_NODE)); 1436 ckpt->cur_node_blkoff[i] = 1437 cpu_to_le16(curseg_blkoff(sbi, i + CURSEG_HOT_NODE)); 1438 ckpt->alloc_type[i + CURSEG_HOT_NODE] = 1439 curseg_alloc_type(sbi, i + CURSEG_HOT_NODE); 1440 } 1441 for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) { 1442 ckpt->cur_data_segno[i] = 1443 cpu_to_le32(curseg_segno(sbi, i + CURSEG_HOT_DATA)); 1444 ckpt->cur_data_blkoff[i] = 1445 cpu_to_le16(curseg_blkoff(sbi, i + CURSEG_HOT_DATA)); 1446 ckpt->alloc_type[i + CURSEG_HOT_DATA] = 1447 curseg_alloc_type(sbi, i + CURSEG_HOT_DATA); 1448 } 1449 1450 /* 2 cp + n data seg summary + orphan inode blocks */ 1451 data_sum_blocks = f2fs_npages_for_summary_flush(sbi, false); 1452 spin_lock_irqsave(&sbi->cp_lock, flags); 1453 if (data_sum_blocks < NR_CURSEG_DATA_TYPE) 1454 __set_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG); 1455 else 1456 __clear_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG); 1457 spin_unlock_irqrestore(&sbi->cp_lock, flags); 1458 1459 orphan_blocks = GET_ORPHAN_BLOCKS(orphan_num); 1460 ckpt->cp_pack_start_sum = cpu_to_le32(1 + cp_payload_blks + 1461 orphan_blocks); 1462 1463 if (__remain_node_summaries(cpc->reason)) 1464 ckpt->cp_pack_total_block_count = cpu_to_le32(F2FS_CP_PACKS+ 1465 cp_payload_blks + data_sum_blocks + 1466 orphan_blocks + NR_CURSEG_NODE_TYPE); 1467 else 1468 ckpt->cp_pack_total_block_count = cpu_to_le32(F2FS_CP_PACKS + 1469 cp_payload_blks + data_sum_blocks + 1470 orphan_blocks); 1471 1472 /* update ckpt flag for checkpoint */ 1473 update_ckpt_flags(sbi, cpc); 1474 1475 /* update SIT/NAT bitmap */ 1476 get_sit_bitmap(sbi, __bitmap_ptr(sbi, SIT_BITMAP)); 1477 get_nat_bitmap(sbi, __bitmap_ptr(sbi, NAT_BITMAP)); 1478 1479 crc32 = f2fs_checkpoint_chksum(sbi, ckpt); 1480 *((__le32 *)((unsigned char *)ckpt + 1481 le32_to_cpu(ckpt->checksum_offset))) 1482 = cpu_to_le32(crc32); 1483 1484 start_blk = __start_cp_next_addr(sbi); 1485 1486 /* write nat bits */ 1487 if (enabled_nat_bits(sbi, cpc)) { 1488 __u64 cp_ver = cur_cp_version(ckpt); 1489 block_t blk; 1490 1491 cp_ver |= ((__u64)crc32 << 32); 1492 *(__le64 *)nm_i->nat_bits = cpu_to_le64(cp_ver); 1493 1494 blk = start_blk + sbi->blocks_per_seg - nm_i->nat_bits_blocks; 1495 for (i = 0; i < nm_i->nat_bits_blocks; i++) 1496 f2fs_update_meta_page(sbi, nm_i->nat_bits + 1497 (i << F2FS_BLKSIZE_BITS), blk + i); 1498 } 1499 1500 /* write out checkpoint buffer at block 0 */ 1501 f2fs_update_meta_page(sbi, ckpt, start_blk++); 1502 1503 for (i = 1; i < 1 + cp_payload_blks; i++) 1504 f2fs_update_meta_page(sbi, (char *)ckpt + i * F2FS_BLKSIZE, 1505 start_blk++); 1506 1507 if (orphan_num) { 1508 write_orphan_inodes(sbi, start_blk); 1509 start_blk += orphan_blocks; 1510 } 1511 1512 f2fs_write_data_summaries(sbi, start_blk); 1513 start_blk += data_sum_blocks; 1514 1515 /* Record write statistics in the hot node summary */ 1516 kbytes_written = sbi->kbytes_written; 1517 if (sb->s_bdev->bd_part) 1518 kbytes_written += BD_PART_WRITTEN(sbi); 1519 1520 seg_i->journal->info.kbytes_written = cpu_to_le64(kbytes_written); 1521 1522 if (__remain_node_summaries(cpc->reason)) { 1523 f2fs_write_node_summaries(sbi, start_blk); 1524 start_blk += NR_CURSEG_NODE_TYPE; 1525 } 1526 1527 /* update user_block_counts */ 1528 sbi->last_valid_block_count = sbi->total_valid_block_count; 1529 percpu_counter_set(&sbi->alloc_valid_block_count, 0); 1530 1531 /* Here, we have one bio having CP pack except cp pack 2 page */ 1532 f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_CP_META_IO); 1533 /* Wait for all dirty meta pages to be submitted for IO */ 1534 f2fs_wait_on_all_pages(sbi, F2FS_DIRTY_META); 1535 1536 /* wait for previous submitted meta pages writeback */ 1537 f2fs_wait_on_all_pages(sbi, F2FS_WB_CP_DATA); 1538 1539 /* flush all device cache */ 1540 err = f2fs_flush_device_cache(sbi); 1541 if (err) 1542 return err; 1543 1544 /* barrier and flush checkpoint cp pack 2 page if it can */ 1545 commit_checkpoint(sbi, ckpt, start_blk); 1546 f2fs_wait_on_all_pages(sbi, F2FS_WB_CP_DATA); 1547 1548 /* 1549 * invalidate intermediate page cache borrowed from meta inode which are 1550 * used for migration of encrypted, verity or compressed inode's blocks. 1551 */ 1552 if (f2fs_sb_has_encrypt(sbi) || f2fs_sb_has_verity(sbi) || 1553 f2fs_sb_has_compression(sbi)) 1554 invalidate_mapping_pages(META_MAPPING(sbi), 1555 MAIN_BLKADDR(sbi), MAX_BLKADDR(sbi) - 1); 1556 1557 f2fs_release_ino_entry(sbi, false); 1558 1559 f2fs_reset_fsync_node_info(sbi); 1560 1561 clear_sbi_flag(sbi, SBI_IS_DIRTY); 1562 clear_sbi_flag(sbi, SBI_NEED_CP); 1563 clear_sbi_flag(sbi, SBI_QUOTA_SKIP_FLUSH); 1564 1565 spin_lock(&sbi->stat_lock); 1566 sbi->unusable_block_count = 0; 1567 spin_unlock(&sbi->stat_lock); 1568 1569 __set_cp_next_pack(sbi); 1570 1571 /* 1572 * redirty superblock if metadata like node page or inode cache is 1573 * updated during writing checkpoint. 1574 */ 1575 if (get_pages(sbi, F2FS_DIRTY_NODES) || 1576 get_pages(sbi, F2FS_DIRTY_IMETA)) 1577 set_sbi_flag(sbi, SBI_IS_DIRTY); 1578 1579 f2fs_bug_on(sbi, get_pages(sbi, F2FS_DIRTY_DENTS)); 1580 1581 return unlikely(f2fs_cp_error(sbi)) ? -EIO : 0; 1582} 1583 1584int f2fs_write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc) 1585{ 1586 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 1587 unsigned long long ckpt_ver; 1588 int err = 0; 1589 1590 if (f2fs_readonly(sbi->sb) || f2fs_hw_is_readonly(sbi)) 1591 return -EROFS; 1592 1593 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) { 1594 if (cpc->reason != CP_PAUSE) 1595 return 0; 1596 f2fs_warn(sbi, "Start checkpoint disabled!"); 1597 } 1598 if (cpc->reason != CP_RESIZE) 1599 mutex_lock(&sbi->cp_mutex); 1600 1601 if (!is_sbi_flag_set(sbi, SBI_IS_DIRTY) && 1602 ((cpc->reason & CP_FASTBOOT) || (cpc->reason & CP_SYNC) || 1603 ((cpc->reason & CP_DISCARD) && !sbi->discard_blks))) 1604 goto out; 1605 if (unlikely(f2fs_cp_error(sbi))) { 1606 err = -EIO; 1607 goto out; 1608 } 1609 1610 trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "start block_ops"); 1611 1612 err = block_operations(sbi); 1613 if (err) 1614 goto out; 1615 1616 trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "finish block_ops"); 1617 1618 f2fs_flush_merged_writes(sbi); 1619 1620 /* this is the case of multiple fstrims without any changes */ 1621 if (cpc->reason & CP_DISCARD) { 1622 if (!f2fs_exist_trim_candidates(sbi, cpc)) { 1623 unblock_operations(sbi); 1624 goto out; 1625 } 1626 1627 if (NM_I(sbi)->nat_cnt[DIRTY_NAT] == 0 && 1628 SIT_I(sbi)->dirty_sentries == 0 && 1629 prefree_segments(sbi) == 0) { 1630 f2fs_flush_sit_entries(sbi, cpc); 1631 f2fs_clear_prefree_segments(sbi, cpc); 1632 unblock_operations(sbi); 1633 goto out; 1634 } 1635 } 1636 1637 /* 1638 * update checkpoint pack index 1639 * Increase the version number so that 1640 * SIT entries and seg summaries are written at correct place 1641 */ 1642 ckpt_ver = cur_cp_version(ckpt); 1643 ckpt->checkpoint_ver = cpu_to_le64(++ckpt_ver); 1644 1645 /* write cached NAT/SIT entries to NAT/SIT area */ 1646 err = f2fs_flush_nat_entries(sbi, cpc); 1647 if (err) 1648 goto stop; 1649 1650 f2fs_flush_sit_entries(sbi, cpc); 1651 1652 /* save inmem log status */ 1653 f2fs_save_inmem_curseg(sbi); 1654 1655 err = do_checkpoint(sbi, cpc); 1656 if (err) 1657 f2fs_release_discard_addrs(sbi); 1658 else 1659 f2fs_clear_prefree_segments(sbi, cpc); 1660 1661 f2fs_restore_inmem_curseg(sbi); 1662stop: 1663 unblock_operations(sbi); 1664 stat_inc_cp_count(sbi->stat_info); 1665 1666 if (cpc->reason & CP_RECOVERY) 1667 f2fs_notice(sbi, "checkpoint: version = %llx", ckpt_ver); 1668 1669 /* update CP_TIME to trigger checkpoint periodically */ 1670 f2fs_update_time(sbi, CP_TIME); 1671 trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "finish checkpoint"); 1672out: 1673 if (cpc->reason != CP_RESIZE) 1674 mutex_unlock(&sbi->cp_mutex); 1675 return err; 1676} 1677 1678void f2fs_init_ino_entry_info(struct f2fs_sb_info *sbi) 1679{ 1680 int i; 1681 1682 for (i = 0; i < MAX_INO_ENTRY; i++) { 1683 struct inode_management *im = &sbi->im[i]; 1684 1685 INIT_RADIX_TREE(&im->ino_root, GFP_ATOMIC); 1686 spin_lock_init(&im->ino_lock); 1687 INIT_LIST_HEAD(&im->ino_list); 1688 im->ino_num = 0; 1689 } 1690 1691 sbi->max_orphans = (sbi->blocks_per_seg - F2FS_CP_PACKS - 1692 NR_CURSEG_PERSIST_TYPE - __cp_payload(sbi)) * 1693 F2FS_ORPHANS_PER_BLOCK; 1694} 1695 1696int __init f2fs_create_checkpoint_caches(void) 1697{ 1698 ino_entry_slab = f2fs_kmem_cache_create("f2fs_ino_entry", 1699 sizeof(struct ino_entry)); 1700 if (!ino_entry_slab) 1701 return -ENOMEM; 1702 f2fs_inode_entry_slab = f2fs_kmem_cache_create("f2fs_inode_entry", 1703 sizeof(struct inode_entry)); 1704 if (!f2fs_inode_entry_slab) { 1705 kmem_cache_destroy(ino_entry_slab); 1706 return -ENOMEM; 1707 } 1708 return 0; 1709} 1710 1711void f2fs_destroy_checkpoint_caches(void) 1712{ 1713 kmem_cache_destroy(ino_entry_slab); 1714 kmem_cache_destroy(f2fs_inode_entry_slab); 1715} 1716