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1// SPDX-License-Identifier: GPL-2.02/*3 * fs/f2fs/checkpoint.c4 *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#include <linux/kthread.h>17 18#include "f2fs.h"19#include "node.h"20#include "segment.h"21#include "iostat.h"22#include <trace/events/f2fs.h>23 24#define DEFAULT_CHECKPOINT_IOPRIO (IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE, 3))25 26static struct kmem_cache *ino_entry_slab;27struct kmem_cache *f2fs_inode_entry_slab;28 29void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi, bool end_io,30 unsigned char reason)31{32 f2fs_build_fault_attr(sbi, 0, 0);33 if (!end_io)34 f2fs_flush_merged_writes(sbi);35 f2fs_handle_critical_error(sbi, reason, end_io);36}37 38/*39 * We guarantee no failure on the returned page.40 */41struct page *f2fs_grab_meta_page(struct f2fs_sb_info *sbi, pgoff_t index)42{43 struct address_space *mapping = META_MAPPING(sbi);44 struct page *page;45repeat:46 page = f2fs_grab_cache_page(mapping, index, false);47 if (!page) {48 cond_resched();49 goto repeat;50 }51 f2fs_wait_on_page_writeback(page, META, true, true);52 if (!PageUptodate(page))53 SetPageUptodate(page);54 return page;55}56 57static struct page *__get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index,58 bool is_meta)59{60 struct address_space *mapping = META_MAPPING(sbi);61 struct page *page;62 struct f2fs_io_info fio = {63 .sbi = sbi,64 .type = META,65 .op = REQ_OP_READ,66 .op_flags = REQ_META | REQ_PRIO,67 .old_blkaddr = index,68 .new_blkaddr = index,69 .encrypted_page = NULL,70 .is_por = !is_meta ? 1 : 0,71 };72 int err;73 74 if (unlikely(!is_meta))75 fio.op_flags &= ~REQ_META;76repeat:77 page = f2fs_grab_cache_page(mapping, index, false);78 if (!page) {79 cond_resched();80 goto repeat;81 }82 if (PageUptodate(page))83 goto out;84 85 fio.page = page;86 87 err = f2fs_submit_page_bio(&fio);88 if (err) {89 f2fs_put_page(page, 1);90 return ERR_PTR(err);91 }92 93 f2fs_update_iostat(sbi, NULL, FS_META_READ_IO, F2FS_BLKSIZE);94 95 lock_page(page);96 if (unlikely(page->mapping != mapping)) {97 f2fs_put_page(page, 1);98 goto repeat;99 }100 101 if (unlikely(!PageUptodate(page))) {102 f2fs_handle_page_eio(sbi, page_folio(page), META);103 f2fs_put_page(page, 1);104 return ERR_PTR(-EIO);105 }106out:107 return page;108}109 110struct page *f2fs_get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index)111{112 return __get_meta_page(sbi, index, true);113}114 115struct page *f2fs_get_meta_page_retry(struct f2fs_sb_info *sbi, pgoff_t index)116{117 struct page *page;118 int count = 0;119 120retry:121 page = __get_meta_page(sbi, index, true);122 if (IS_ERR(page)) {123 if (PTR_ERR(page) == -EIO &&124 ++count <= DEFAULT_RETRY_IO_COUNT)125 goto retry;126 f2fs_stop_checkpoint(sbi, false, STOP_CP_REASON_META_PAGE);127 }128 return page;129}130 131/* for POR only */132struct page *f2fs_get_tmp_page(struct f2fs_sb_info *sbi, pgoff_t index)133{134 return __get_meta_page(sbi, index, false);135}136 137static bool __is_bitmap_valid(struct f2fs_sb_info *sbi, block_t blkaddr,138 int type)139{140 struct seg_entry *se;141 unsigned int segno, offset;142 bool exist;143 144 if (type == DATA_GENERIC)145 return true;146 147 segno = GET_SEGNO(sbi, blkaddr);148 offset = GET_BLKOFF_FROM_SEG0(sbi, blkaddr);149 se = get_seg_entry(sbi, segno);150 151 exist = f2fs_test_bit(offset, se->cur_valid_map);152 153 /* skip data, if we already have an error in checkpoint. */154 if (unlikely(f2fs_cp_error(sbi)))155 return exist;156 157 if ((exist && type == DATA_GENERIC_ENHANCE_UPDATE) ||158 (!exist && type == DATA_GENERIC_ENHANCE))159 goto out_err;160 if (!exist && type != DATA_GENERIC_ENHANCE_UPDATE)161 goto out_handle;162 return exist;163 164out_err:165 f2fs_err(sbi, "Inconsistent error blkaddr:%u, sit bitmap:%d",166 blkaddr, exist);167 set_sbi_flag(sbi, SBI_NEED_FSCK);168 dump_stack();169out_handle:170 f2fs_handle_error(sbi, ERROR_INVALID_BLKADDR);171 return exist;172}173 174static bool __f2fs_is_valid_blkaddr(struct f2fs_sb_info *sbi,175 block_t blkaddr, int type)176{177 switch (type) {178 case META_NAT:179 break;180 case META_SIT:181 if (unlikely(blkaddr >= SIT_BLK_CNT(sbi)))182 goto check_only;183 break;184 case META_SSA:185 if (unlikely(blkaddr >= MAIN_BLKADDR(sbi) ||186 blkaddr < SM_I(sbi)->ssa_blkaddr))187 goto check_only;188 break;189 case META_CP:190 if (unlikely(blkaddr >= SIT_I(sbi)->sit_base_addr ||191 blkaddr < __start_cp_addr(sbi)))192 goto check_only;193 break;194 case META_POR:195 if (unlikely(blkaddr >= MAX_BLKADDR(sbi) ||196 blkaddr < MAIN_BLKADDR(sbi)))197 goto check_only;198 break;199 case DATA_GENERIC:200 case DATA_GENERIC_ENHANCE:201 case DATA_GENERIC_ENHANCE_READ:202 case DATA_GENERIC_ENHANCE_UPDATE:203 if (unlikely(blkaddr >= MAX_BLKADDR(sbi) ||204 blkaddr < MAIN_BLKADDR(sbi))) {205 206 /* Skip to emit an error message. */207 if (unlikely(f2fs_cp_error(sbi)))208 return false;209 210 f2fs_warn(sbi, "access invalid blkaddr:%u",211 blkaddr);212 set_sbi_flag(sbi, SBI_NEED_FSCK);213 dump_stack();214 goto err;215 } else {216 return __is_bitmap_valid(sbi, blkaddr, type);217 }218 break;219 case META_GENERIC:220 if (unlikely(blkaddr < SEG0_BLKADDR(sbi) ||221 blkaddr >= MAIN_BLKADDR(sbi)))222 goto err;223 break;224 default:225 BUG();226 }227 228 return true;229err:230 f2fs_handle_error(sbi, ERROR_INVALID_BLKADDR);231check_only:232 return false;233}234 235bool f2fs_is_valid_blkaddr(struct f2fs_sb_info *sbi,236 block_t blkaddr, int type)237{238 if (time_to_inject(sbi, FAULT_BLKADDR_VALIDITY))239 return false;240 return __f2fs_is_valid_blkaddr(sbi, blkaddr, type);241}242 243bool f2fs_is_valid_blkaddr_raw(struct f2fs_sb_info *sbi,244 block_t blkaddr, int type)245{246 return __f2fs_is_valid_blkaddr(sbi, blkaddr, type);247}248 249/*250 * Readahead CP/NAT/SIT/SSA/POR pages251 */252int f2fs_ra_meta_pages(struct f2fs_sb_info *sbi, block_t start, int nrpages,253 int type, bool sync)254{255 struct page *page;256 block_t blkno = start;257 struct f2fs_io_info fio = {258 .sbi = sbi,259 .type = META,260 .op = REQ_OP_READ,261 .op_flags = sync ? (REQ_META | REQ_PRIO) : REQ_RAHEAD,262 .encrypted_page = NULL,263 .in_list = 0,264 .is_por = (type == META_POR) ? 1 : 0,265 };266 struct blk_plug plug;267 int err;268 269 if (unlikely(type == META_POR))270 fio.op_flags &= ~REQ_META;271 272 blk_start_plug(&plug);273 for (; nrpages-- > 0; blkno++) {274 275 if (!f2fs_is_valid_blkaddr(sbi, blkno, type))276 goto out;277 278 switch (type) {279 case META_NAT:280 if (unlikely(blkno >=281 NAT_BLOCK_OFFSET(NM_I(sbi)->max_nid)))282 blkno = 0;283 /* get nat block addr */284 fio.new_blkaddr = current_nat_addr(sbi,285 blkno * NAT_ENTRY_PER_BLOCK);286 break;287 case META_SIT:288 if (unlikely(blkno >= TOTAL_SEGS(sbi)))289 goto out;290 /* get sit block addr */291 fio.new_blkaddr = current_sit_addr(sbi,292 blkno * SIT_ENTRY_PER_BLOCK);293 break;294 case META_SSA:295 case META_CP:296 case META_POR:297 fio.new_blkaddr = blkno;298 break;299 default:300 BUG();301 }302 303 page = f2fs_grab_cache_page(META_MAPPING(sbi),304 fio.new_blkaddr, false);305 if (!page)306 continue;307 if (PageUptodate(page)) {308 f2fs_put_page(page, 1);309 continue;310 }311 312 fio.page = page;313 err = f2fs_submit_page_bio(&fio);314 f2fs_put_page(page, err ? 1 : 0);315 316 if (!err)317 f2fs_update_iostat(sbi, NULL, FS_META_READ_IO,318 F2FS_BLKSIZE);319 }320out:321 blk_finish_plug(&plug);322 return blkno - start;323}324 325void f2fs_ra_meta_pages_cond(struct f2fs_sb_info *sbi, pgoff_t index,326 unsigned int ra_blocks)327{328 struct page *page;329 bool readahead = false;330 331 if (ra_blocks == RECOVERY_MIN_RA_BLOCKS)332 return;333 334 page = find_get_page(META_MAPPING(sbi), index);335 if (!page || !PageUptodate(page))336 readahead = true;337 f2fs_put_page(page, 0);338 339 if (readahead)340 f2fs_ra_meta_pages(sbi, index, ra_blocks, META_POR, true);341}342 343static int __f2fs_write_meta_page(struct page *page,344 struct writeback_control *wbc,345 enum iostat_type io_type)346{347 struct f2fs_sb_info *sbi = F2FS_P_SB(page);348 struct folio *folio = page_folio(page);349 350 trace_f2fs_writepage(folio, META);351 352 if (unlikely(f2fs_cp_error(sbi))) {353 if (is_sbi_flag_set(sbi, SBI_IS_CLOSE)) {354 folio_clear_uptodate(folio);355 dec_page_count(sbi, F2FS_DIRTY_META);356 folio_unlock(folio);357 return 0;358 }359 goto redirty_out;360 }361 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))362 goto redirty_out;363 if (wbc->for_reclaim && folio->index < GET_SUM_BLOCK(sbi, 0))364 goto redirty_out;365 366 f2fs_do_write_meta_page(sbi, folio, io_type);367 dec_page_count(sbi, F2FS_DIRTY_META);368 369 if (wbc->for_reclaim)370 f2fs_submit_merged_write_cond(sbi, NULL, page, 0, META);371 372 folio_unlock(folio);373 374 if (unlikely(f2fs_cp_error(sbi)))375 f2fs_submit_merged_write(sbi, META);376 377 return 0;378 379redirty_out:380 redirty_page_for_writepage(wbc, page);381 return AOP_WRITEPAGE_ACTIVATE;382}383 384static int f2fs_write_meta_page(struct page *page,385 struct writeback_control *wbc)386{387 return __f2fs_write_meta_page(page, wbc, FS_META_IO);388}389 390static int f2fs_write_meta_pages(struct address_space *mapping,391 struct writeback_control *wbc)392{393 struct f2fs_sb_info *sbi = F2FS_M_SB(mapping);394 long diff, written;395 396 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))397 goto skip_write;398 399 /* collect a number of dirty meta pages and write together */400 if (wbc->sync_mode != WB_SYNC_ALL &&401 get_pages(sbi, F2FS_DIRTY_META) <402 nr_pages_to_skip(sbi, META))403 goto skip_write;404 405 /* if locked failed, cp will flush dirty pages instead */406 if (!f2fs_down_write_trylock(&sbi->cp_global_sem))407 goto skip_write;408 409 trace_f2fs_writepages(mapping->host, wbc, META);410 diff = nr_pages_to_write(sbi, META, wbc);411 written = f2fs_sync_meta_pages(sbi, META, wbc->nr_to_write, FS_META_IO);412 f2fs_up_write(&sbi->cp_global_sem);413 wbc->nr_to_write = max((long)0, wbc->nr_to_write - written - diff);414 return 0;415 416skip_write:417 wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_META);418 trace_f2fs_writepages(mapping->host, wbc, META);419 return 0;420}421 422long f2fs_sync_meta_pages(struct f2fs_sb_info *sbi, enum page_type type,423 long nr_to_write, enum iostat_type io_type)424{425 struct address_space *mapping = META_MAPPING(sbi);426 pgoff_t index = 0, prev = ULONG_MAX;427 struct folio_batch fbatch;428 long nwritten = 0;429 int nr_folios;430 struct writeback_control wbc = {431 .for_reclaim = 0,432 };433 struct blk_plug plug;434 435 folio_batch_init(&fbatch);436 437 blk_start_plug(&plug);438 439 while ((nr_folios = filemap_get_folios_tag(mapping, &index,440 (pgoff_t)-1,441 PAGECACHE_TAG_DIRTY, &fbatch))) {442 int i;443 444 for (i = 0; i < nr_folios; i++) {445 struct folio *folio = fbatch.folios[i];446 447 if (nr_to_write != LONG_MAX && i != 0 &&448 folio->index != prev +449 folio_nr_pages(fbatch.folios[i-1])) {450 folio_batch_release(&fbatch);451 goto stop;452 }453 454 folio_lock(folio);455 456 if (unlikely(folio->mapping != mapping)) {457continue_unlock:458 folio_unlock(folio);459 continue;460 }461 if (!folio_test_dirty(folio)) {462 /* someone wrote it for us */463 goto continue_unlock;464 }465 466 f2fs_wait_on_page_writeback(&folio->page, META,467 true, true);468 469 if (!folio_clear_dirty_for_io(folio))470 goto continue_unlock;471 472 if (__f2fs_write_meta_page(&folio->page, &wbc,473 io_type)) {474 folio_unlock(folio);475 break;476 }477 nwritten += folio_nr_pages(folio);478 prev = folio->index;479 if (unlikely(nwritten >= nr_to_write))480 break;481 }482 folio_batch_release(&fbatch);483 cond_resched();484 }485stop:486 if (nwritten)487 f2fs_submit_merged_write(sbi, type);488 489 blk_finish_plug(&plug);490 491 return nwritten;492}493 494static bool f2fs_dirty_meta_folio(struct address_space *mapping,495 struct folio *folio)496{497 trace_f2fs_set_page_dirty(folio, META);498 499 if (!folio_test_uptodate(folio))500 folio_mark_uptodate(folio);501 if (filemap_dirty_folio(mapping, folio)) {502 inc_page_count(F2FS_M_SB(mapping), F2FS_DIRTY_META);503 set_page_private_reference(&folio->page);504 return true;505 }506 return false;507}508 509const struct address_space_operations f2fs_meta_aops = {510 .writepage = f2fs_write_meta_page,511 .writepages = f2fs_write_meta_pages,512 .dirty_folio = f2fs_dirty_meta_folio,513 .invalidate_folio = f2fs_invalidate_folio,514 .release_folio = f2fs_release_folio,515 .migrate_folio = filemap_migrate_folio,516};517 518static void __add_ino_entry(struct f2fs_sb_info *sbi, nid_t ino,519 unsigned int devidx, int type)520{521 struct inode_management *im = &sbi->im[type];522 struct ino_entry *e = NULL, *new = NULL;523 524 if (type == FLUSH_INO) {525 rcu_read_lock();526 e = radix_tree_lookup(&im->ino_root, ino);527 rcu_read_unlock();528 }529 530retry:531 if (!e)532 new = f2fs_kmem_cache_alloc(ino_entry_slab,533 GFP_NOFS, true, NULL);534 535 radix_tree_preload(GFP_NOFS | __GFP_NOFAIL);536 537 spin_lock(&im->ino_lock);538 e = radix_tree_lookup(&im->ino_root, ino);539 if (!e) {540 if (!new) {541 spin_unlock(&im->ino_lock);542 radix_tree_preload_end();543 goto retry;544 }545 e = new;546 if (unlikely(radix_tree_insert(&im->ino_root, ino, e)))547 f2fs_bug_on(sbi, 1);548 549 memset(e, 0, sizeof(struct ino_entry));550 e->ino = ino;551 552 list_add_tail(&e->list, &im->ino_list);553 if (type != ORPHAN_INO)554 im->ino_num++;555 }556 557 if (type == FLUSH_INO)558 f2fs_set_bit(devidx, (char *)&e->dirty_device);559 560 spin_unlock(&im->ino_lock);561 radix_tree_preload_end();562 563 if (new && e != new)564 kmem_cache_free(ino_entry_slab, new);565}566 567static void __remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type)568{569 struct inode_management *im = &sbi->im[type];570 struct ino_entry *e;571 572 spin_lock(&im->ino_lock);573 e = radix_tree_lookup(&im->ino_root, ino);574 if (e) {575 list_del(&e->list);576 radix_tree_delete(&im->ino_root, ino);577 im->ino_num--;578 spin_unlock(&im->ino_lock);579 kmem_cache_free(ino_entry_slab, e);580 return;581 }582 spin_unlock(&im->ino_lock);583}584 585void f2fs_add_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type)586{587 /* add new dirty ino entry into list */588 __add_ino_entry(sbi, ino, 0, type);589}590 591void f2fs_remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type)592{593 /* remove dirty ino entry from list */594 __remove_ino_entry(sbi, ino, type);595}596 597/* mode should be APPEND_INO, UPDATE_INO or TRANS_DIR_INO */598bool f2fs_exist_written_data(struct f2fs_sb_info *sbi, nid_t ino, int mode)599{600 struct inode_management *im = &sbi->im[mode];601 struct ino_entry *e;602 603 spin_lock(&im->ino_lock);604 e = radix_tree_lookup(&im->ino_root, ino);605 spin_unlock(&im->ino_lock);606 return e ? true : false;607}608 609void f2fs_release_ino_entry(struct f2fs_sb_info *sbi, bool all)610{611 struct ino_entry *e, *tmp;612 int i;613 614 for (i = all ? ORPHAN_INO : APPEND_INO; i < MAX_INO_ENTRY; i++) {615 struct inode_management *im = &sbi->im[i];616 617 spin_lock(&im->ino_lock);618 list_for_each_entry_safe(e, tmp, &im->ino_list, list) {619 list_del(&e->list);620 radix_tree_delete(&im->ino_root, e->ino);621 kmem_cache_free(ino_entry_slab, e);622 im->ino_num--;623 }624 spin_unlock(&im->ino_lock);625 }626}627 628void f2fs_set_dirty_device(struct f2fs_sb_info *sbi, nid_t ino,629 unsigned int devidx, int type)630{631 __add_ino_entry(sbi, ino, devidx, type);632}633 634bool f2fs_is_dirty_device(struct f2fs_sb_info *sbi, nid_t ino,635 unsigned int devidx, int type)636{637 struct inode_management *im = &sbi->im[type];638 struct ino_entry *e;639 bool is_dirty = false;640 641 spin_lock(&im->ino_lock);642 e = radix_tree_lookup(&im->ino_root, ino);643 if (e && f2fs_test_bit(devidx, (char *)&e->dirty_device))644 is_dirty = true;645 spin_unlock(&im->ino_lock);646 return is_dirty;647}648 649int f2fs_acquire_orphan_inode(struct f2fs_sb_info *sbi)650{651 struct inode_management *im = &sbi->im[ORPHAN_INO];652 int err = 0;653 654 spin_lock(&im->ino_lock);655 656 if (time_to_inject(sbi, FAULT_ORPHAN)) {657 spin_unlock(&im->ino_lock);658 return -ENOSPC;659 }660 661 if (unlikely(im->ino_num >= sbi->max_orphans))662 err = -ENOSPC;663 else664 im->ino_num++;665 spin_unlock(&im->ino_lock);666 667 return err;668}669 670void f2fs_release_orphan_inode(struct f2fs_sb_info *sbi)671{672 struct inode_management *im = &sbi->im[ORPHAN_INO];673 674 spin_lock(&im->ino_lock);675 f2fs_bug_on(sbi, im->ino_num == 0);676 im->ino_num--;677 spin_unlock(&im->ino_lock);678}679 680void f2fs_add_orphan_inode(struct inode *inode)681{682 /* add new orphan ino entry into list */683 __add_ino_entry(F2FS_I_SB(inode), inode->i_ino, 0, ORPHAN_INO);684 f2fs_update_inode_page(inode);685}686 687void f2fs_remove_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino)688{689 /* remove orphan entry from orphan list */690 __remove_ino_entry(sbi, ino, ORPHAN_INO);691}692 693static int recover_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino)694{695 struct inode *inode;696 struct node_info ni;697 int err;698 699 inode = f2fs_iget_retry(sbi->sb, ino);700 if (IS_ERR(inode)) {701 /*702 * there should be a bug that we can't find the entry703 * to orphan inode.704 */705 f2fs_bug_on(sbi, PTR_ERR(inode) == -ENOENT);706 return PTR_ERR(inode);707 }708 709 err = f2fs_dquot_initialize(inode);710 if (err) {711 iput(inode);712 goto err_out;713 }714 715 clear_nlink(inode);716 717 /* truncate all the data during iput */718 iput(inode);719 720 err = f2fs_get_node_info(sbi, ino, &ni, false);721 if (err)722 goto err_out;723 724 /* ENOMEM was fully retried in f2fs_evict_inode. */725 if (ni.blk_addr != NULL_ADDR) {726 err = -EIO;727 goto err_out;728 }729 return 0;730 731err_out:732 set_sbi_flag(sbi, SBI_NEED_FSCK);733 f2fs_warn(sbi, "%s: orphan failed (ino=%x), run fsck to fix.",734 __func__, ino);735 return err;736}737 738int f2fs_recover_orphan_inodes(struct f2fs_sb_info *sbi)739{740 block_t start_blk, orphan_blocks, i, j;741 int err = 0;742 743 if (!is_set_ckpt_flags(sbi, CP_ORPHAN_PRESENT_FLAG))744 return 0;745 746 if (f2fs_hw_is_readonly(sbi)) {747 f2fs_info(sbi, "write access unavailable, skipping orphan cleanup");748 return 0;749 }750 751 if (is_sbi_flag_set(sbi, SBI_IS_WRITABLE))752 f2fs_info(sbi, "orphan cleanup on readonly fs");753 754 start_blk = __start_cp_addr(sbi) + 1 + __cp_payload(sbi);755 orphan_blocks = __start_sum_addr(sbi) - 1 - __cp_payload(sbi);756 757 f2fs_ra_meta_pages(sbi, start_blk, orphan_blocks, META_CP, true);758 759 for (i = 0; i < orphan_blocks; i++) {760 struct page *page;761 struct f2fs_orphan_block *orphan_blk;762 763 page = f2fs_get_meta_page(sbi, start_blk + i);764 if (IS_ERR(page)) {765 err = PTR_ERR(page);766 goto out;767 }768 769 orphan_blk = (struct f2fs_orphan_block *)page_address(page);770 for (j = 0; j < le32_to_cpu(orphan_blk->entry_count); j++) {771 nid_t ino = le32_to_cpu(orphan_blk->ino[j]);772 773 err = recover_orphan_inode(sbi, ino);774 if (err) {775 f2fs_put_page(page, 1);776 goto out;777 }778 }779 f2fs_put_page(page, 1);780 }781 /* clear Orphan Flag */782 clear_ckpt_flags(sbi, CP_ORPHAN_PRESENT_FLAG);783out:784 set_sbi_flag(sbi, SBI_IS_RECOVERED);785 786 return err;787}788 789static void write_orphan_inodes(struct f2fs_sb_info *sbi, block_t start_blk)790{791 struct list_head *head;792 struct f2fs_orphan_block *orphan_blk = NULL;793 unsigned int nentries = 0;794 unsigned short index = 1;795 unsigned short orphan_blocks;796 struct page *page = NULL;797 struct ino_entry *orphan = NULL;798 struct inode_management *im = &sbi->im[ORPHAN_INO];799 800 orphan_blocks = GET_ORPHAN_BLOCKS(im->ino_num);801 802 /*803 * we don't need to do spin_lock(&im->ino_lock) here, since all the804 * orphan inode operations are covered under f2fs_lock_op().805 * And, spin_lock should be avoided due to page operations below.806 */807 head = &im->ino_list;808 809 /* loop for each orphan inode entry and write them in journal block */810 list_for_each_entry(orphan, head, list) {811 if (!page) {812 page = f2fs_grab_meta_page(sbi, start_blk++);813 orphan_blk =814 (struct f2fs_orphan_block *)page_address(page);815 memset(orphan_blk, 0, sizeof(*orphan_blk));816 }817 818 orphan_blk->ino[nentries++] = cpu_to_le32(orphan->ino);819 820 if (nentries == F2FS_ORPHANS_PER_BLOCK) {821 /*822 * an orphan block is full of 1020 entries,823 * then we need to flush current orphan blocks824 * and bring another one in memory825 */826 orphan_blk->blk_addr = cpu_to_le16(index);827 orphan_blk->blk_count = cpu_to_le16(orphan_blocks);828 orphan_blk->entry_count = cpu_to_le32(nentries);829 set_page_dirty(page);830 f2fs_put_page(page, 1);831 index++;832 nentries = 0;833 page = NULL;834 }835 }836 837 if (page) {838 orphan_blk->blk_addr = cpu_to_le16(index);839 orphan_blk->blk_count = cpu_to_le16(orphan_blocks);840 orphan_blk->entry_count = cpu_to_le32(nentries);841 set_page_dirty(page);842 f2fs_put_page(page, 1);843 }844}845 846static __u32 f2fs_checkpoint_chksum(struct f2fs_sb_info *sbi,847 struct f2fs_checkpoint *ckpt)848{849 unsigned int chksum_ofs = le32_to_cpu(ckpt->checksum_offset);850 __u32 chksum;851 852 chksum = f2fs_crc32(sbi, ckpt, chksum_ofs);853 if (chksum_ofs < CP_CHKSUM_OFFSET) {854 chksum_ofs += sizeof(chksum);855 chksum = f2fs_chksum(sbi, chksum, (__u8 *)ckpt + chksum_ofs,856 F2FS_BLKSIZE - chksum_ofs);857 }858 return chksum;859}860 861static int get_checkpoint_version(struct f2fs_sb_info *sbi, block_t cp_addr,862 struct f2fs_checkpoint **cp_block, struct page **cp_page,863 unsigned long long *version)864{865 size_t crc_offset = 0;866 __u32 crc;867 868 *cp_page = f2fs_get_meta_page(sbi, cp_addr);869 if (IS_ERR(*cp_page))870 return PTR_ERR(*cp_page);871 872 *cp_block = (struct f2fs_checkpoint *)page_address(*cp_page);873 874 crc_offset = le32_to_cpu((*cp_block)->checksum_offset);875 if (crc_offset < CP_MIN_CHKSUM_OFFSET ||876 crc_offset > CP_CHKSUM_OFFSET) {877 f2fs_put_page(*cp_page, 1);878 f2fs_warn(sbi, "invalid crc_offset: %zu", crc_offset);879 return -EINVAL;880 }881 882 crc = f2fs_checkpoint_chksum(sbi, *cp_block);883 if (crc != cur_cp_crc(*cp_block)) {884 f2fs_put_page(*cp_page, 1);885 f2fs_warn(sbi, "invalid crc value");886 return -EINVAL;887 }888 889 *version = cur_cp_version(*cp_block);890 return 0;891}892 893static struct page *validate_checkpoint(struct f2fs_sb_info *sbi,894 block_t cp_addr, unsigned long long *version)895{896 struct page *cp_page_1 = NULL, *cp_page_2 = NULL;897 struct f2fs_checkpoint *cp_block = NULL;898 unsigned long long cur_version = 0, pre_version = 0;899 unsigned int cp_blocks;900 int err;901 902 err = get_checkpoint_version(sbi, cp_addr, &cp_block,903 &cp_page_1, version);904 if (err)905 return NULL;906 907 cp_blocks = le32_to_cpu(cp_block->cp_pack_total_block_count);908 909 if (cp_blocks > BLKS_PER_SEG(sbi) || cp_blocks <= F2FS_CP_PACKS) {910 f2fs_warn(sbi, "invalid cp_pack_total_block_count:%u",911 le32_to_cpu(cp_block->cp_pack_total_block_count));912 goto invalid_cp;913 }914 pre_version = *version;915 916 cp_addr += cp_blocks - 1;917 err = get_checkpoint_version(sbi, cp_addr, &cp_block,918 &cp_page_2, version);919 if (err)920 goto invalid_cp;921 cur_version = *version;922 923 if (cur_version == pre_version) {924 *version = cur_version;925 f2fs_put_page(cp_page_2, 1);926 return cp_page_1;927 }928 f2fs_put_page(cp_page_2, 1);929invalid_cp:930 f2fs_put_page(cp_page_1, 1);931 return NULL;932}933 934int f2fs_get_valid_checkpoint(struct f2fs_sb_info *sbi)935{936 struct f2fs_checkpoint *cp_block;937 struct f2fs_super_block *fsb = sbi->raw_super;938 struct page *cp1, *cp2, *cur_page;939 unsigned long blk_size = sbi->blocksize;940 unsigned long long cp1_version = 0, cp2_version = 0;941 unsigned long long cp_start_blk_no;942 unsigned int cp_blks = 1 + __cp_payload(sbi);943 block_t cp_blk_no;944 int i;945 int err;946 947 sbi->ckpt = f2fs_kvzalloc(sbi, array_size(blk_size, cp_blks),948 GFP_KERNEL);949 if (!sbi->ckpt)950 return -ENOMEM;951 /*952 * Finding out valid cp block involves read both953 * sets( cp pack 1 and cp pack 2)954 */955 cp_start_blk_no = le32_to_cpu(fsb->cp_blkaddr);956 cp1 = validate_checkpoint(sbi, cp_start_blk_no, &cp1_version);957 958 /* The second checkpoint pack should start at the next segment */959 cp_start_blk_no += ((unsigned long long)1) <<960 le32_to_cpu(fsb->log_blocks_per_seg);961 cp2 = validate_checkpoint(sbi, cp_start_blk_no, &cp2_version);962 963 if (cp1 && cp2) {964 if (ver_after(cp2_version, cp1_version))965 cur_page = cp2;966 else967 cur_page = cp1;968 } else if (cp1) {969 cur_page = cp1;970 } else if (cp2) {971 cur_page = cp2;972 } else {973 err = -EFSCORRUPTED;974 goto fail_no_cp;975 }976 977 cp_block = (struct f2fs_checkpoint *)page_address(cur_page);978 memcpy(sbi->ckpt, cp_block, blk_size);979 980 if (cur_page == cp1)981 sbi->cur_cp_pack = 1;982 else983 sbi->cur_cp_pack = 2;984 985 /* Sanity checking of checkpoint */986 if (f2fs_sanity_check_ckpt(sbi)) {987 err = -EFSCORRUPTED;988 goto free_fail_no_cp;989 }990 991 if (cp_blks <= 1)992 goto done;993 994 cp_blk_no = le32_to_cpu(fsb->cp_blkaddr);995 if (cur_page == cp2)996 cp_blk_no += BIT(le32_to_cpu(fsb->log_blocks_per_seg));997 998 for (i = 1; i < cp_blks; i++) {999 void *sit_bitmap_ptr;1000 unsigned char *ckpt = (unsigned char *)sbi->ckpt;1001 1002 cur_page = f2fs_get_meta_page(sbi, cp_blk_no + i);1003 if (IS_ERR(cur_page)) {1004 err = PTR_ERR(cur_page);1005 goto free_fail_no_cp;1006 }1007 sit_bitmap_ptr = page_address(cur_page);1008 memcpy(ckpt + i * blk_size, sit_bitmap_ptr, blk_size);1009 f2fs_put_page(cur_page, 1);1010 }1011done:1012 f2fs_put_page(cp1, 1);1013 f2fs_put_page(cp2, 1);1014 return 0;1015 1016free_fail_no_cp:1017 f2fs_put_page(cp1, 1);1018 f2fs_put_page(cp2, 1);1019fail_no_cp:1020 kvfree(sbi->ckpt);1021 return err;1022}1023 1024static void __add_dirty_inode(struct inode *inode, enum inode_type type)1025{1026 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);1027 int flag = (type == DIR_INODE) ? FI_DIRTY_DIR : FI_DIRTY_FILE;1028 1029 if (is_inode_flag_set(inode, flag))1030 return;1031 1032 set_inode_flag(inode, flag);1033 list_add_tail(&F2FS_I(inode)->dirty_list, &sbi->inode_list[type]);1034 stat_inc_dirty_inode(sbi, type);1035}1036 1037static void __remove_dirty_inode(struct inode *inode, enum inode_type type)1038{1039 int flag = (type == DIR_INODE) ? FI_DIRTY_DIR : FI_DIRTY_FILE;1040 1041 if (get_dirty_pages(inode) || !is_inode_flag_set(inode, flag))1042 return;1043 1044 list_del_init(&F2FS_I(inode)->dirty_list);1045 clear_inode_flag(inode, flag);1046 stat_dec_dirty_inode(F2FS_I_SB(inode), type);1047}1048 1049void f2fs_update_dirty_folio(struct inode *inode, struct folio *folio)1050{1051 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);1052 enum inode_type type = S_ISDIR(inode->i_mode) ? DIR_INODE : FILE_INODE;1053 1054 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&1055 !S_ISLNK(inode->i_mode))1056 return;1057 1058 spin_lock(&sbi->inode_lock[type]);1059 if (type != FILE_INODE || test_opt(sbi, DATA_FLUSH))1060 __add_dirty_inode(inode, type);1061 inode_inc_dirty_pages(inode);1062 spin_unlock(&sbi->inode_lock[type]);1063 1064 set_page_private_reference(&folio->page);1065}1066 1067void f2fs_remove_dirty_inode(struct inode *inode)1068{1069 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);1070 enum inode_type type = S_ISDIR(inode->i_mode) ? DIR_INODE : FILE_INODE;1071 1072 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&1073 !S_ISLNK(inode->i_mode))1074 return;1075 1076 if (type == FILE_INODE && !test_opt(sbi, DATA_FLUSH))1077 return;1078 1079 spin_lock(&sbi->inode_lock[type]);1080 __remove_dirty_inode(inode, type);1081 spin_unlock(&sbi->inode_lock[type]);1082}1083 1084int f2fs_sync_dirty_inodes(struct f2fs_sb_info *sbi, enum inode_type type,1085 bool from_cp)1086{1087 struct list_head *head;1088 struct inode *inode;1089 struct f2fs_inode_info *fi;1090 bool is_dir = (type == DIR_INODE);1091 unsigned long ino = 0;1092 1093 trace_f2fs_sync_dirty_inodes_enter(sbi->sb, is_dir,1094 get_pages(sbi, is_dir ?1095 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA));1096retry:1097 if (unlikely(f2fs_cp_error(sbi))) {1098 trace_f2fs_sync_dirty_inodes_exit(sbi->sb, is_dir,1099 get_pages(sbi, is_dir ?1100 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA));1101 return -EIO;1102 }1103 1104 spin_lock(&sbi->inode_lock[type]);1105 1106 head = &sbi->inode_list[type];1107 if (list_empty(head)) {1108 spin_unlock(&sbi->inode_lock[type]);1109 trace_f2fs_sync_dirty_inodes_exit(sbi->sb, is_dir,1110 get_pages(sbi, is_dir ?1111 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA));1112 return 0;1113 }1114 fi = list_first_entry(head, struct f2fs_inode_info, dirty_list);1115 inode = igrab(&fi->vfs_inode);1116 spin_unlock(&sbi->inode_lock[type]);1117 if (inode) {1118 unsigned long cur_ino = inode->i_ino;1119 1120 if (from_cp)1121 F2FS_I(inode)->cp_task = current;1122 F2FS_I(inode)->wb_task = current;1123 1124 filemap_fdatawrite(inode->i_mapping);1125 1126 F2FS_I(inode)->wb_task = NULL;1127 if (from_cp)1128 F2FS_I(inode)->cp_task = NULL;1129 1130 iput(inode);1131 /* We need to give cpu to another writers. */1132 if (ino == cur_ino)1133 cond_resched();1134 else1135 ino = cur_ino;1136 } else {1137 /*1138 * We should submit bio, since it exists several1139 * writebacking dentry pages in the freeing inode.1140 */1141 f2fs_submit_merged_write(sbi, DATA);1142 cond_resched();1143 }1144 goto retry;1145}1146 1147static int f2fs_sync_inode_meta(struct f2fs_sb_info *sbi)1148{1149 struct list_head *head = &sbi->inode_list[DIRTY_META];1150 struct inode *inode;1151 struct f2fs_inode_info *fi;1152 s64 total = get_pages(sbi, F2FS_DIRTY_IMETA);1153 1154 while (total--) {1155 if (unlikely(f2fs_cp_error(sbi)))1156 return -EIO;1157 1158 spin_lock(&sbi->inode_lock[DIRTY_META]);1159 if (list_empty(head)) {1160 spin_unlock(&sbi->inode_lock[DIRTY_META]);1161 return 0;1162 }1163 fi = list_first_entry(head, struct f2fs_inode_info,1164 gdirty_list);1165 inode = igrab(&fi->vfs_inode);1166 spin_unlock(&sbi->inode_lock[DIRTY_META]);1167 if (inode) {1168 sync_inode_metadata(inode, 0);1169 1170 /* it's on eviction */1171 if (is_inode_flag_set(inode, FI_DIRTY_INODE))1172 f2fs_update_inode_page(inode);1173 iput(inode);1174 }1175 }1176 return 0;1177}1178 1179static void __prepare_cp_block(struct f2fs_sb_info *sbi)1180{1181 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);1182 struct f2fs_nm_info *nm_i = NM_I(sbi);1183 nid_t last_nid = nm_i->next_scan_nid;1184 1185 next_free_nid(sbi, &last_nid);1186 ckpt->valid_block_count = cpu_to_le64(valid_user_blocks(sbi));1187 ckpt->valid_node_count = cpu_to_le32(valid_node_count(sbi));1188 ckpt->valid_inode_count = cpu_to_le32(valid_inode_count(sbi));1189 ckpt->next_free_nid = cpu_to_le32(last_nid);1190 1191 /* update user_block_counts */1192 sbi->last_valid_block_count = sbi->total_valid_block_count;1193 percpu_counter_set(&sbi->alloc_valid_block_count, 0);1194 percpu_counter_set(&sbi->rf_node_block_count, 0);1195}1196 1197static bool __need_flush_quota(struct f2fs_sb_info *sbi)1198{1199 bool ret = false;1200 1201 if (!is_journalled_quota(sbi))1202 return false;1203 1204 if (!f2fs_down_write_trylock(&sbi->quota_sem))1205 return true;1206 if (is_sbi_flag_set(sbi, SBI_QUOTA_SKIP_FLUSH)) {1207 ret = false;1208 } else if (is_sbi_flag_set(sbi, SBI_QUOTA_NEED_REPAIR)) {1209 ret = false;1210 } else if (is_sbi_flag_set(sbi, SBI_QUOTA_NEED_FLUSH)) {1211 clear_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH);1212 ret = true;1213 } else if (get_pages(sbi, F2FS_DIRTY_QDATA)) {1214 ret = true;1215 }1216 f2fs_up_write(&sbi->quota_sem);1217 return ret;1218}1219 1220/*1221 * Freeze all the FS-operations for checkpoint.1222 */1223static int block_operations(struct f2fs_sb_info *sbi)1224{1225 struct writeback_control wbc = {1226 .sync_mode = WB_SYNC_ALL,1227 .nr_to_write = LONG_MAX,1228 .for_reclaim = 0,1229 };1230 int err = 0, cnt = 0;1231 1232 /*1233 * Let's flush inline_data in dirty node pages.1234 */1235 f2fs_flush_inline_data(sbi);1236 1237retry_flush_quotas:1238 f2fs_lock_all(sbi);1239 if (__need_flush_quota(sbi)) {1240 int locked;1241 1242 if (++cnt > DEFAULT_RETRY_QUOTA_FLUSH_COUNT) {1243 set_sbi_flag(sbi, SBI_QUOTA_SKIP_FLUSH);1244 set_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH);1245 goto retry_flush_dents;1246 }1247 f2fs_unlock_all(sbi);1248 1249 /* only failed during mount/umount/freeze/quotactl */1250 locked = down_read_trylock(&sbi->sb->s_umount);1251 f2fs_quota_sync(sbi->sb, -1);1252 if (locked)1253 up_read(&sbi->sb->s_umount);1254 cond_resched();1255 goto retry_flush_quotas;1256 }1257 1258retry_flush_dents:1259 /* write all the dirty dentry pages */1260 if (get_pages(sbi, F2FS_DIRTY_DENTS)) {1261 f2fs_unlock_all(sbi);1262 err = f2fs_sync_dirty_inodes(sbi, DIR_INODE, true);1263 if (err)1264 return err;1265 cond_resched();1266 goto retry_flush_quotas;1267 }1268 1269 /*1270 * POR: we should ensure that there are no dirty node pages1271 * until finishing nat/sit flush. inode->i_blocks can be updated.1272 */1273 f2fs_down_write(&sbi->node_change);1274 1275 if (get_pages(sbi, F2FS_DIRTY_IMETA)) {1276 f2fs_up_write(&sbi->node_change);1277 f2fs_unlock_all(sbi);1278 err = f2fs_sync_inode_meta(sbi);1279 if (err)1280 return err;1281 cond_resched();1282 goto retry_flush_quotas;1283 }1284 1285retry_flush_nodes:1286 f2fs_down_write(&sbi->node_write);1287 1288 if (get_pages(sbi, F2FS_DIRTY_NODES)) {1289 f2fs_up_write(&sbi->node_write);1290 atomic_inc(&sbi->wb_sync_req[NODE]);1291 err = f2fs_sync_node_pages(sbi, &wbc, false, FS_CP_NODE_IO);1292 atomic_dec(&sbi->wb_sync_req[NODE]);1293 if (err) {1294 f2fs_up_write(&sbi->node_change);1295 f2fs_unlock_all(sbi);1296 return err;1297 }1298 cond_resched();1299 goto retry_flush_nodes;1300 }1301 1302 /*1303 * sbi->node_change is used only for AIO write_begin path which produces1304 * dirty node blocks and some checkpoint values by block allocation.1305 */1306 __prepare_cp_block(sbi);1307 f2fs_up_write(&sbi->node_change);1308 return err;1309}1310 1311static void unblock_operations(struct f2fs_sb_info *sbi)1312{1313 f2fs_up_write(&sbi->node_write);1314 f2fs_unlock_all(sbi);1315}1316 1317void f2fs_wait_on_all_pages(struct f2fs_sb_info *sbi, int type)1318{1319 DEFINE_WAIT(wait);1320 1321 for (;;) {1322 if (!get_pages(sbi, type))1323 break;1324 1325 if (unlikely(f2fs_cp_error(sbi) &&1326 !is_sbi_flag_set(sbi, SBI_IS_CLOSE)))1327 break;1328 1329 if (type == F2FS_DIRTY_META)1330 f2fs_sync_meta_pages(sbi, META, LONG_MAX,1331 FS_CP_META_IO);1332 else if (type == F2FS_WB_CP_DATA)1333 f2fs_submit_merged_write(sbi, DATA);1334 1335 prepare_to_wait(&sbi->cp_wait, &wait, TASK_UNINTERRUPTIBLE);1336 io_schedule_timeout(DEFAULT_IO_TIMEOUT);1337 }1338 finish_wait(&sbi->cp_wait, &wait);1339}1340 1341static void update_ckpt_flags(struct f2fs_sb_info *sbi, struct cp_control *cpc)1342{1343 unsigned long orphan_num = sbi->im[ORPHAN_INO].ino_num;1344 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);1345 unsigned long flags;1346 1347 if (cpc->reason & CP_UMOUNT) {1348 if (le32_to_cpu(ckpt->cp_pack_total_block_count) +1349 NM_I(sbi)->nat_bits_blocks > BLKS_PER_SEG(sbi)) {1350 clear_ckpt_flags(sbi, CP_NAT_BITS_FLAG);1351 f2fs_notice(sbi, "Disable nat_bits due to no space");1352 } else if (!is_set_ckpt_flags(sbi, CP_NAT_BITS_FLAG) &&1353 f2fs_nat_bitmap_enabled(sbi)) {1354 f2fs_enable_nat_bits(sbi);1355 set_ckpt_flags(sbi, CP_NAT_BITS_FLAG);1356 f2fs_notice(sbi, "Rebuild and enable nat_bits");1357 }1358 }1359 1360 spin_lock_irqsave(&sbi->cp_lock, flags);1361 1362 if (cpc->reason & CP_TRIMMED)1363 __set_ckpt_flags(ckpt, CP_TRIMMED_FLAG);1364 else1365 __clear_ckpt_flags(ckpt, CP_TRIMMED_FLAG);1366 1367 if (cpc->reason & CP_UMOUNT)1368 __set_ckpt_flags(ckpt, CP_UMOUNT_FLAG);1369 else1370 __clear_ckpt_flags(ckpt, CP_UMOUNT_FLAG);1371 1372 if (cpc->reason & CP_FASTBOOT)1373 __set_ckpt_flags(ckpt, CP_FASTBOOT_FLAG);1374 else1375 __clear_ckpt_flags(ckpt, CP_FASTBOOT_FLAG);1376 1377 if (orphan_num)1378 __set_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG);1379 else1380 __clear_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG);1381 1382 if (is_sbi_flag_set(sbi, SBI_NEED_FSCK))1383 __set_ckpt_flags(ckpt, CP_FSCK_FLAG);1384 1385 if (is_sbi_flag_set(sbi, SBI_IS_RESIZEFS))1386 __set_ckpt_flags(ckpt, CP_RESIZEFS_FLAG);1387 else1388 __clear_ckpt_flags(ckpt, CP_RESIZEFS_FLAG);1389 1390 if (is_sbi_flag_set(sbi, SBI_CP_DISABLED))1391 __set_ckpt_flags(ckpt, CP_DISABLED_FLAG);1392 else1393 __clear_ckpt_flags(ckpt, CP_DISABLED_FLAG);1394 1395 if (is_sbi_flag_set(sbi, SBI_CP_DISABLED_QUICK))1396 __set_ckpt_flags(ckpt, CP_DISABLED_QUICK_FLAG);1397 else1398 __clear_ckpt_flags(ckpt, CP_DISABLED_QUICK_FLAG);1399 1400 if (is_sbi_flag_set(sbi, SBI_QUOTA_SKIP_FLUSH))1401 __set_ckpt_flags(ckpt, CP_QUOTA_NEED_FSCK_FLAG);1402 else1403 __clear_ckpt_flags(ckpt, CP_QUOTA_NEED_FSCK_FLAG);1404 1405 if (is_sbi_flag_set(sbi, SBI_QUOTA_NEED_REPAIR))1406 __set_ckpt_flags(ckpt, CP_QUOTA_NEED_FSCK_FLAG);1407 1408 /* set this flag to activate crc|cp_ver for recovery */1409 __set_ckpt_flags(ckpt, CP_CRC_RECOVERY_FLAG);1410 __clear_ckpt_flags(ckpt, CP_NOCRC_RECOVERY_FLAG);1411 1412 spin_unlock_irqrestore(&sbi->cp_lock, flags);1413}1414 1415static void commit_checkpoint(struct f2fs_sb_info *sbi,1416 void *src, block_t blk_addr)1417{1418 struct writeback_control wbc = {1419 .for_reclaim = 0,1420 };1421 1422 /*1423 * filemap_get_folios_tag and lock_page again will take1424 * some extra time. Therefore, f2fs_update_meta_pages and1425 * f2fs_sync_meta_pages are combined in this function.1426 */1427 struct page *page = f2fs_grab_meta_page(sbi, blk_addr);1428 int err;1429 1430 f2fs_wait_on_page_writeback(page, META, true, true);1431 1432 memcpy(page_address(page), src, PAGE_SIZE);1433 1434 set_page_dirty(page);1435 if (unlikely(!clear_page_dirty_for_io(page)))1436 f2fs_bug_on(sbi, 1);1437 1438 /* writeout cp pack 2 page */1439 err = __f2fs_write_meta_page(page, &wbc, FS_CP_META_IO);1440 if (unlikely(err && f2fs_cp_error(sbi))) {1441 f2fs_put_page(page, 1);1442 return;1443 }1444 1445 f2fs_bug_on(sbi, err);1446 f2fs_put_page(page, 0);1447 1448 /* submit checkpoint (with barrier if NOBARRIER is not set) */1449 f2fs_submit_merged_write(sbi, META_FLUSH);1450}1451 1452static inline u64 get_sectors_written(struct block_device *bdev)1453{1454 return (u64)part_stat_read(bdev, sectors[STAT_WRITE]);1455}1456 1457u64 f2fs_get_sectors_written(struct f2fs_sb_info *sbi)1458{1459 if (f2fs_is_multi_device(sbi)) {1460 u64 sectors = 0;1461 int i;1462 1463 for (i = 0; i < sbi->s_ndevs; i++)1464 sectors += get_sectors_written(FDEV(i).bdev);1465 1466 return sectors;1467 }1468 1469 return get_sectors_written(sbi->sb->s_bdev);1470}1471 1472static int do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)1473{1474 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);1475 struct f2fs_nm_info *nm_i = NM_I(sbi);1476 unsigned long orphan_num = sbi->im[ORPHAN_INO].ino_num, flags;1477 block_t start_blk;1478 unsigned int data_sum_blocks, orphan_blocks;1479 __u32 crc32 = 0;1480 int i;1481 int cp_payload_blks = __cp_payload(sbi);1482 struct curseg_info *seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE);1483 u64 kbytes_written;1484 int err;1485 1486 /* Flush all the NAT/SIT pages */1487 f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_CP_META_IO);1488 1489 /* start to update checkpoint, cp ver is already updated previously */1490 ckpt->elapsed_time = cpu_to_le64(get_mtime(sbi, true));1491 ckpt->free_segment_count = cpu_to_le32(free_segments(sbi));1492 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {1493 struct curseg_info *curseg = CURSEG_I(sbi, i + CURSEG_HOT_NODE);1494 1495 ckpt->cur_node_segno[i] = cpu_to_le32(curseg->segno);1496 ckpt->cur_node_blkoff[i] = cpu_to_le16(curseg->next_blkoff);1497 ckpt->alloc_type[i + CURSEG_HOT_NODE] = curseg->alloc_type;1498 }1499 for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) {1500 struct curseg_info *curseg = CURSEG_I(sbi, i + CURSEG_HOT_DATA);1501 1502 ckpt->cur_data_segno[i] = cpu_to_le32(curseg->segno);1503 ckpt->cur_data_blkoff[i] = cpu_to_le16(curseg->next_blkoff);1504 ckpt->alloc_type[i + CURSEG_HOT_DATA] = curseg->alloc_type;1505 }1506 1507 /* 2 cp + n data seg summary + orphan inode blocks */1508 data_sum_blocks = f2fs_npages_for_summary_flush(sbi, false);1509 spin_lock_irqsave(&sbi->cp_lock, flags);1510 if (data_sum_blocks < NR_CURSEG_DATA_TYPE)1511 __set_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG);1512 else1513 __clear_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG);1514 spin_unlock_irqrestore(&sbi->cp_lock, flags);1515 1516 orphan_blocks = GET_ORPHAN_BLOCKS(orphan_num);1517 ckpt->cp_pack_start_sum = cpu_to_le32(1 + cp_payload_blks +1518 orphan_blocks);1519 1520 if (__remain_node_summaries(cpc->reason))1521 ckpt->cp_pack_total_block_count = cpu_to_le32(F2FS_CP_PACKS +1522 cp_payload_blks + data_sum_blocks +1523 orphan_blocks + NR_CURSEG_NODE_TYPE);1524 else1525 ckpt->cp_pack_total_block_count = cpu_to_le32(F2FS_CP_PACKS +1526 cp_payload_blks + data_sum_blocks +1527 orphan_blocks);1528 1529 /* update ckpt flag for checkpoint */1530 update_ckpt_flags(sbi, cpc);1531 1532 /* update SIT/NAT bitmap */1533 get_sit_bitmap(sbi, __bitmap_ptr(sbi, SIT_BITMAP));1534 get_nat_bitmap(sbi, __bitmap_ptr(sbi, NAT_BITMAP));1535 1536 crc32 = f2fs_checkpoint_chksum(sbi, ckpt);1537 *((__le32 *)((unsigned char *)ckpt +1538 le32_to_cpu(ckpt->checksum_offset)))1539 = cpu_to_le32(crc32);1540 1541 start_blk = __start_cp_next_addr(sbi);1542 1543 /* write nat bits */1544 if ((cpc->reason & CP_UMOUNT) &&1545 is_set_ckpt_flags(sbi, CP_NAT_BITS_FLAG)) {1546 __u64 cp_ver = cur_cp_version(ckpt);1547 block_t blk;1548 1549 cp_ver |= ((__u64)crc32 << 32);1550 *(__le64 *)nm_i->nat_bits = cpu_to_le64(cp_ver);1551 1552 blk = start_blk + BLKS_PER_SEG(sbi) - nm_i->nat_bits_blocks;1553 for (i = 0; i < nm_i->nat_bits_blocks; i++)1554 f2fs_update_meta_page(sbi, nm_i->nat_bits +1555 F2FS_BLK_TO_BYTES(i), blk + i);1556 }1557 1558 /* write out checkpoint buffer at block 0 */1559 f2fs_update_meta_page(sbi, ckpt, start_blk++);1560 1561 for (i = 1; i < 1 + cp_payload_blks; i++)1562 f2fs_update_meta_page(sbi, (char *)ckpt + i * F2FS_BLKSIZE,1563 start_blk++);1564 1565 if (orphan_num) {1566 write_orphan_inodes(sbi, start_blk);1567 start_blk += orphan_blocks;1568 }1569 1570 f2fs_write_data_summaries(sbi, start_blk);1571 start_blk += data_sum_blocks;1572 1573 /* Record write statistics in the hot node summary */1574 kbytes_written = sbi->kbytes_written;1575 kbytes_written += (f2fs_get_sectors_written(sbi) -1576 sbi->sectors_written_start) >> 1;1577 seg_i->journal->info.kbytes_written = cpu_to_le64(kbytes_written);1578 1579 if (__remain_node_summaries(cpc->reason)) {1580 f2fs_write_node_summaries(sbi, start_blk);1581 start_blk += NR_CURSEG_NODE_TYPE;1582 }1583 1584 /* Here, we have one bio having CP pack except cp pack 2 page */1585 f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_CP_META_IO);1586 /* Wait for all dirty meta pages to be submitted for IO */1587 f2fs_wait_on_all_pages(sbi, F2FS_DIRTY_META);1588 1589 /* wait for previous submitted meta pages writeback */1590 f2fs_wait_on_all_pages(sbi, F2FS_WB_CP_DATA);1591 1592 /* flush all device cache */1593 err = f2fs_flush_device_cache(sbi);1594 if (err)1595 return err;1596 1597 /* barrier and flush checkpoint cp pack 2 page if it can */1598 commit_checkpoint(sbi, ckpt, start_blk);1599 f2fs_wait_on_all_pages(sbi, F2FS_WB_CP_DATA);1600 1601 /*1602 * invalidate intermediate page cache borrowed from meta inode which are1603 * used for migration of encrypted, verity or compressed inode's blocks.1604 */1605 if (f2fs_sb_has_encrypt(sbi) || f2fs_sb_has_verity(sbi) ||1606 f2fs_sb_has_compression(sbi))1607 f2fs_bug_on(sbi,1608 invalidate_inode_pages2_range(META_MAPPING(sbi),1609 MAIN_BLKADDR(sbi), MAX_BLKADDR(sbi) - 1));1610 1611 f2fs_release_ino_entry(sbi, false);1612 1613 f2fs_reset_fsync_node_info(sbi);1614 1615 clear_sbi_flag(sbi, SBI_IS_DIRTY);1616 clear_sbi_flag(sbi, SBI_NEED_CP);1617 clear_sbi_flag(sbi, SBI_QUOTA_SKIP_FLUSH);1618 1619 spin_lock(&sbi->stat_lock);1620 sbi->unusable_block_count = 0;1621 spin_unlock(&sbi->stat_lock);1622 1623 __set_cp_next_pack(sbi);1624 1625 /*1626 * redirty superblock if metadata like node page or inode cache is1627 * updated during writing checkpoint.1628 */1629 if (get_pages(sbi, F2FS_DIRTY_NODES) ||1630 get_pages(sbi, F2FS_DIRTY_IMETA))1631 set_sbi_flag(sbi, SBI_IS_DIRTY);1632 1633 f2fs_bug_on(sbi, get_pages(sbi, F2FS_DIRTY_DENTS));1634 1635 return unlikely(f2fs_cp_error(sbi)) ? -EIO : 0;1636}1637 1638int f2fs_write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)1639{1640 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);1641 unsigned long long ckpt_ver;1642 int err = 0;1643 1644 if (f2fs_readonly(sbi->sb) || f2fs_hw_is_readonly(sbi))1645 return -EROFS;1646 1647 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {1648 if (cpc->reason != CP_PAUSE)1649 return 0;1650 f2fs_warn(sbi, "Start checkpoint disabled!");1651 }1652 if (cpc->reason != CP_RESIZE)1653 f2fs_down_write(&sbi->cp_global_sem);1654 1655 if (!is_sbi_flag_set(sbi, SBI_IS_DIRTY) &&1656 ((cpc->reason & CP_FASTBOOT) || (cpc->reason & CP_SYNC) ||1657 ((cpc->reason & CP_DISCARD) && !sbi->discard_blks)))1658 goto out;1659 if (unlikely(f2fs_cp_error(sbi))) {1660 err = -EIO;1661 goto out;1662 }1663 1664 trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "start block_ops");1665 1666 err = block_operations(sbi);1667 if (err)1668 goto out;1669 1670 trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "finish block_ops");1671 1672 f2fs_flush_merged_writes(sbi);1673 1674 /* this is the case of multiple fstrims without any changes */1675 if (cpc->reason & CP_DISCARD) {1676 if (!f2fs_exist_trim_candidates(sbi, cpc)) {1677 unblock_operations(sbi);1678 goto out;1679 }1680 1681 if (NM_I(sbi)->nat_cnt[DIRTY_NAT] == 0 &&1682 SIT_I(sbi)->dirty_sentries == 0 &&1683 prefree_segments(sbi) == 0) {1684 f2fs_flush_sit_entries(sbi, cpc);1685 f2fs_clear_prefree_segments(sbi, cpc);1686 unblock_operations(sbi);1687 goto out;1688 }1689 }1690 1691 /*1692 * update checkpoint pack index1693 * Increase the version number so that1694 * SIT entries and seg summaries are written at correct place1695 */1696 ckpt_ver = cur_cp_version(ckpt);1697 ckpt->checkpoint_ver = cpu_to_le64(++ckpt_ver);1698 1699 /* write cached NAT/SIT entries to NAT/SIT area */1700 err = f2fs_flush_nat_entries(sbi, cpc);1701 if (err) {1702 f2fs_err(sbi, "f2fs_flush_nat_entries failed err:%d, stop checkpoint", err);1703 f2fs_bug_on(sbi, !f2fs_cp_error(sbi));1704 goto stop;1705 }1706 1707 f2fs_flush_sit_entries(sbi, cpc);1708 1709 /* save inmem log status */1710 f2fs_save_inmem_curseg(sbi);1711 1712 err = do_checkpoint(sbi, cpc);1713 if (err) {1714 f2fs_err(sbi, "do_checkpoint failed err:%d, stop checkpoint", err);1715 f2fs_bug_on(sbi, !f2fs_cp_error(sbi));1716 f2fs_release_discard_addrs(sbi);1717 } else {1718 f2fs_clear_prefree_segments(sbi, cpc);1719 }1720 1721 f2fs_restore_inmem_curseg(sbi);1722 f2fs_reinit_atgc_curseg(sbi);1723 stat_inc_cp_count(sbi);1724stop:1725 unblock_operations(sbi);1726 1727 if (cpc->reason & CP_RECOVERY)1728 f2fs_notice(sbi, "checkpoint: version = %llx", ckpt_ver);1729 1730 /* update CP_TIME to trigger checkpoint periodically */1731 f2fs_update_time(sbi, CP_TIME);1732 trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "finish checkpoint");1733out:1734 if (cpc->reason != CP_RESIZE)1735 f2fs_up_write(&sbi->cp_global_sem);1736 return err;1737}1738 1739void f2fs_init_ino_entry_info(struct f2fs_sb_info *sbi)1740{1741 int i;1742 1743 for (i = 0; i < MAX_INO_ENTRY; i++) {1744 struct inode_management *im = &sbi->im[i];1745 1746 INIT_RADIX_TREE(&im->ino_root, GFP_ATOMIC);1747 spin_lock_init(&im->ino_lock);1748 INIT_LIST_HEAD(&im->ino_list);1749 im->ino_num = 0;1750 }1751 1752 sbi->max_orphans = (BLKS_PER_SEG(sbi) - F2FS_CP_PACKS -1753 NR_CURSEG_PERSIST_TYPE - __cp_payload(sbi)) *1754 F2FS_ORPHANS_PER_BLOCK;1755}1756 1757int __init f2fs_create_checkpoint_caches(void)1758{1759 ino_entry_slab = f2fs_kmem_cache_create("f2fs_ino_entry",1760 sizeof(struct ino_entry));1761 if (!ino_entry_slab)1762 return -ENOMEM;1763 f2fs_inode_entry_slab = f2fs_kmem_cache_create("f2fs_inode_entry",1764 sizeof(struct inode_entry));1765 if (!f2fs_inode_entry_slab) {1766 kmem_cache_destroy(ino_entry_slab);1767 return -ENOMEM;1768 }1769 return 0;1770}1771 1772void f2fs_destroy_checkpoint_caches(void)1773{1774 kmem_cache_destroy(ino_entry_slab);1775 kmem_cache_destroy(f2fs_inode_entry_slab);1776}1777 1778static int __write_checkpoint_sync(struct f2fs_sb_info *sbi)1779{1780 struct cp_control cpc = { .reason = CP_SYNC, };1781 int err;1782 1783 f2fs_down_write(&sbi->gc_lock);1784 err = f2fs_write_checkpoint(sbi, &cpc);1785 f2fs_up_write(&sbi->gc_lock);1786 1787 return err;1788}1789 1790static void __checkpoint_and_complete_reqs(struct f2fs_sb_info *sbi)1791{1792 struct ckpt_req_control *cprc = &sbi->cprc_info;1793 struct ckpt_req *req, *next;1794 struct llist_node *dispatch_list;1795 u64 sum_diff = 0, diff, count = 0;1796 int ret;1797 1798 dispatch_list = llist_del_all(&cprc->issue_list);1799 if (!dispatch_list)1800 return;1801 dispatch_list = llist_reverse_order(dispatch_list);1802 1803 ret = __write_checkpoint_sync(sbi);1804 atomic_inc(&cprc->issued_ckpt);1805 1806 llist_for_each_entry_safe(req, next, dispatch_list, llnode) {1807 diff = (u64)ktime_ms_delta(ktime_get(), req->queue_time);1808 req->ret = ret;1809 complete(&req->wait);1810 1811 sum_diff += diff;1812 count++;1813 }1814 atomic_sub(count, &cprc->queued_ckpt);1815 atomic_add(count, &cprc->total_ckpt);1816 1817 spin_lock(&cprc->stat_lock);1818 cprc->cur_time = (unsigned int)div64_u64(sum_diff, count);1819 if (cprc->peak_time < cprc->cur_time)1820 cprc->peak_time = cprc->cur_time;1821 spin_unlock(&cprc->stat_lock);1822}1823 1824static int issue_checkpoint_thread(void *data)1825{1826 struct f2fs_sb_info *sbi = data;1827 struct ckpt_req_control *cprc = &sbi->cprc_info;1828 wait_queue_head_t *q = &cprc->ckpt_wait_queue;1829repeat:1830 if (kthread_should_stop())1831 return 0;1832 1833 if (!llist_empty(&cprc->issue_list))1834 __checkpoint_and_complete_reqs(sbi);1835 1836 wait_event_interruptible(*q,1837 kthread_should_stop() || !llist_empty(&cprc->issue_list));1838 goto repeat;1839}1840 1841static void flush_remained_ckpt_reqs(struct f2fs_sb_info *sbi,1842 struct ckpt_req *wait_req)1843{1844 struct ckpt_req_control *cprc = &sbi->cprc_info;1845 1846 if (!llist_empty(&cprc->issue_list)) {1847 __checkpoint_and_complete_reqs(sbi);1848 } else {1849 /* already dispatched by issue_checkpoint_thread */1850 if (wait_req)1851 wait_for_completion(&wait_req->wait);1852 }1853}1854 1855static void init_ckpt_req(struct ckpt_req *req)1856{1857 memset(req, 0, sizeof(struct ckpt_req));1858 1859 init_completion(&req->wait);1860 req->queue_time = ktime_get();1861}1862 1863int f2fs_issue_checkpoint(struct f2fs_sb_info *sbi)1864{1865 struct ckpt_req_control *cprc = &sbi->cprc_info;1866 struct ckpt_req req;1867 struct cp_control cpc;1868 1869 cpc.reason = __get_cp_reason(sbi);1870 if (!test_opt(sbi, MERGE_CHECKPOINT) || cpc.reason != CP_SYNC) {1871 int ret;1872 1873 f2fs_down_write(&sbi->gc_lock);1874 ret = f2fs_write_checkpoint(sbi, &cpc);1875 f2fs_up_write(&sbi->gc_lock);1876 1877 return ret;1878 }1879 1880 if (!cprc->f2fs_issue_ckpt)1881 return __write_checkpoint_sync(sbi);1882 1883 init_ckpt_req(&req);1884 1885 llist_add(&req.llnode, &cprc->issue_list);1886 atomic_inc(&cprc->queued_ckpt);1887 1888 /*1889 * update issue_list before we wake up issue_checkpoint thread,1890 * this smp_mb() pairs with another barrier in ___wait_event(),1891 * see more details in comments of waitqueue_active().1892 */1893 smp_mb();1894 1895 if (waitqueue_active(&cprc->ckpt_wait_queue))1896 wake_up(&cprc->ckpt_wait_queue);1897 1898 if (cprc->f2fs_issue_ckpt)1899 wait_for_completion(&req.wait);1900 else1901 flush_remained_ckpt_reqs(sbi, &req);1902 1903 return req.ret;1904}1905 1906int f2fs_start_ckpt_thread(struct f2fs_sb_info *sbi)1907{1908 dev_t dev = sbi->sb->s_bdev->bd_dev;1909 struct ckpt_req_control *cprc = &sbi->cprc_info;1910 1911 if (cprc->f2fs_issue_ckpt)1912 return 0;1913 1914 cprc->f2fs_issue_ckpt = kthread_run(issue_checkpoint_thread, sbi,1915 "f2fs_ckpt-%u:%u", MAJOR(dev), MINOR(dev));1916 if (IS_ERR(cprc->f2fs_issue_ckpt)) {1917 int err = PTR_ERR(cprc->f2fs_issue_ckpt);1918 1919 cprc->f2fs_issue_ckpt = NULL;1920 return err;1921 }1922 1923 set_task_ioprio(cprc->f2fs_issue_ckpt, cprc->ckpt_thread_ioprio);1924 1925 return 0;1926}1927 1928void f2fs_stop_ckpt_thread(struct f2fs_sb_info *sbi)1929{1930 struct ckpt_req_control *cprc = &sbi->cprc_info;1931 struct task_struct *ckpt_task;1932 1933 if (!cprc->f2fs_issue_ckpt)1934 return;1935 1936 ckpt_task = cprc->f2fs_issue_ckpt;1937 cprc->f2fs_issue_ckpt = NULL;1938 kthread_stop(ckpt_task);1939 1940 f2fs_flush_ckpt_thread(sbi);1941}1942 1943void f2fs_flush_ckpt_thread(struct f2fs_sb_info *sbi)1944{1945 struct ckpt_req_control *cprc = &sbi->cprc_info;1946 1947 flush_remained_ckpt_reqs(sbi, NULL);1948 1949 /* Let's wait for the previous dispatched checkpoint. */1950 while (atomic_read(&cprc->queued_ckpt))1951 io_schedule_timeout(DEFAULT_IO_TIMEOUT);1952}1953 1954void f2fs_init_ckpt_req_control(struct f2fs_sb_info *sbi)1955{1956 struct ckpt_req_control *cprc = &sbi->cprc_info;1957 1958 atomic_set(&cprc->issued_ckpt, 0);1959 atomic_set(&cprc->total_ckpt, 0);1960 atomic_set(&cprc->queued_ckpt, 0);1961 cprc->ckpt_thread_ioprio = DEFAULT_CHECKPOINT_IOPRIO;1962 init_waitqueue_head(&cprc->ckpt_wait_queue);1963 init_llist_head(&cprc->issue_list);1964 spin_lock_init(&cprc->stat_lock);1965}1966