1 // SPDX-License-Identifier: GPL-2.0
5 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
6 * http://www.samsung.com/
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>
22 #include <trace/events/f2fs.h>
24 #define DEFAULT_CHECKPOINT_IOPRIO (IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE, 3))
26 static struct kmem_cache *ino_entry_slab;
27 struct kmem_cache *f2fs_inode_entry_slab;
29 void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi, bool end_io,
32 f2fs_build_fault_attr(sbi, 0, 0);
33 set_ckpt_flags(sbi, CP_ERROR_FLAG);
35 f2fs_flush_merged_writes(sbi);
37 f2fs_handle_stop(sbi, reason);
42 * We guarantee no failure on the returned page.
44 struct page *f2fs_grab_meta_page(struct f2fs_sb_info *sbi, pgoff_t index)
46 struct address_space *mapping = META_MAPPING(sbi);
49 page = f2fs_grab_cache_page(mapping, index, false);
54 f2fs_wait_on_page_writeback(page, META, true, true);
55 if (!PageUptodate(page))
56 SetPageUptodate(page);
60 static struct page *__get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index,
63 struct address_space *mapping = META_MAPPING(sbi);
65 struct f2fs_io_info fio = {
69 .op_flags = REQ_META | REQ_PRIO,
72 .encrypted_page = NULL,
73 .is_por = !is_meta ? 1 : 0,
77 if (unlikely(!is_meta))
78 fio.op_flags &= ~REQ_META;
80 page = f2fs_grab_cache_page(mapping, index, false);
85 if (PageUptodate(page))
90 err = f2fs_submit_page_bio(&fio);
92 f2fs_put_page(page, 1);
96 f2fs_update_iostat(sbi, NULL, FS_META_READ_IO, F2FS_BLKSIZE);
99 if (unlikely(page->mapping != mapping)) {
100 f2fs_put_page(page, 1);
104 if (unlikely(!PageUptodate(page))) {
105 f2fs_handle_page_eio(sbi, page->index, META);
106 f2fs_put_page(page, 1);
107 return ERR_PTR(-EIO);
113 struct page *f2fs_get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index)
115 return __get_meta_page(sbi, index, true);
118 struct page *f2fs_get_meta_page_retry(struct f2fs_sb_info *sbi, pgoff_t index)
124 page = __get_meta_page(sbi, index, true);
126 if (PTR_ERR(page) == -EIO &&
127 ++count <= DEFAULT_RETRY_IO_COUNT)
129 f2fs_stop_checkpoint(sbi, false, STOP_CP_REASON_META_PAGE);
135 struct page *f2fs_get_tmp_page(struct f2fs_sb_info *sbi, pgoff_t index)
137 return __get_meta_page(sbi, index, false);
140 static bool __is_bitmap_valid(struct f2fs_sb_info *sbi, block_t blkaddr,
143 struct seg_entry *se;
144 unsigned int segno, offset;
147 if (type == DATA_GENERIC)
150 segno = GET_SEGNO(sbi, blkaddr);
151 offset = GET_BLKOFF_FROM_SEG0(sbi, blkaddr);
152 se = get_seg_entry(sbi, segno);
154 exist = f2fs_test_bit(offset, se->cur_valid_map);
156 /* skip data, if we already have an error in checkpoint. */
157 if (unlikely(f2fs_cp_error(sbi)))
160 if (exist && type == DATA_GENERIC_ENHANCE_UPDATE) {
161 f2fs_err(sbi, "Inconsistent error blkaddr:%u, sit bitmap:%d",
163 set_sbi_flag(sbi, SBI_NEED_FSCK);
167 if (!exist && type == DATA_GENERIC_ENHANCE) {
168 f2fs_err(sbi, "Inconsistent error blkaddr:%u, sit bitmap:%d",
170 set_sbi_flag(sbi, SBI_NEED_FSCK);
176 bool f2fs_is_valid_blkaddr(struct f2fs_sb_info *sbi,
177 block_t blkaddr, int type)
179 if (time_to_inject(sbi, FAULT_BLKADDR))
186 if (unlikely(blkaddr >= SIT_BLK_CNT(sbi)))
190 if (unlikely(blkaddr >= MAIN_BLKADDR(sbi) ||
191 blkaddr < SM_I(sbi)->ssa_blkaddr))
195 if (unlikely(blkaddr >= SIT_I(sbi)->sit_base_addr ||
196 blkaddr < __start_cp_addr(sbi)))
200 if (unlikely(blkaddr >= MAX_BLKADDR(sbi) ||
201 blkaddr < MAIN_BLKADDR(sbi)))
205 case DATA_GENERIC_ENHANCE:
206 case DATA_GENERIC_ENHANCE_READ:
207 case DATA_GENERIC_ENHANCE_UPDATE:
208 if (unlikely(blkaddr >= MAX_BLKADDR(sbi) ||
209 blkaddr < MAIN_BLKADDR(sbi))) {
211 /* Skip to emit an error message. */
212 if (unlikely(f2fs_cp_error(sbi)))
215 f2fs_warn(sbi, "access invalid blkaddr:%u",
217 set_sbi_flag(sbi, SBI_NEED_FSCK);
221 return __is_bitmap_valid(sbi, blkaddr, type);
225 if (unlikely(blkaddr < SEG0_BLKADDR(sbi) ||
226 blkaddr >= MAIN_BLKADDR(sbi)))
237 * Readahead CP/NAT/SIT/SSA/POR pages
239 int f2fs_ra_meta_pages(struct f2fs_sb_info *sbi, block_t start, int nrpages,
243 block_t blkno = start;
244 struct f2fs_io_info fio = {
248 .op_flags = sync ? (REQ_META | REQ_PRIO) : REQ_RAHEAD,
249 .encrypted_page = NULL,
251 .is_por = (type == META_POR) ? 1 : 0,
253 struct blk_plug plug;
256 if (unlikely(type == META_POR))
257 fio.op_flags &= ~REQ_META;
259 blk_start_plug(&plug);
260 for (; nrpages-- > 0; blkno++) {
262 if (!f2fs_is_valid_blkaddr(sbi, blkno, type))
267 if (unlikely(blkno >=
268 NAT_BLOCK_OFFSET(NM_I(sbi)->max_nid)))
270 /* get nat block addr */
271 fio.new_blkaddr = current_nat_addr(sbi,
272 blkno * NAT_ENTRY_PER_BLOCK);
275 if (unlikely(blkno >= TOTAL_SEGS(sbi)))
277 /* get sit block addr */
278 fio.new_blkaddr = current_sit_addr(sbi,
279 blkno * SIT_ENTRY_PER_BLOCK);
284 fio.new_blkaddr = blkno;
290 page = f2fs_grab_cache_page(META_MAPPING(sbi),
291 fio.new_blkaddr, false);
294 if (PageUptodate(page)) {
295 f2fs_put_page(page, 1);
300 err = f2fs_submit_page_bio(&fio);
301 f2fs_put_page(page, err ? 1 : 0);
304 f2fs_update_iostat(sbi, NULL, FS_META_READ_IO,
308 blk_finish_plug(&plug);
309 return blkno - start;
312 void f2fs_ra_meta_pages_cond(struct f2fs_sb_info *sbi, pgoff_t index,
313 unsigned int ra_blocks)
316 bool readahead = false;
318 if (ra_blocks == RECOVERY_MIN_RA_BLOCKS)
321 page = find_get_page(META_MAPPING(sbi), index);
322 if (!page || !PageUptodate(page))
324 f2fs_put_page(page, 0);
327 f2fs_ra_meta_pages(sbi, index, ra_blocks, META_POR, true);
330 static int __f2fs_write_meta_page(struct page *page,
331 struct writeback_control *wbc,
332 enum iostat_type io_type)
334 struct f2fs_sb_info *sbi = F2FS_P_SB(page);
336 trace_f2fs_writepage(page, META);
338 if (unlikely(f2fs_cp_error(sbi))) {
339 if (is_sbi_flag_set(sbi, SBI_IS_CLOSE)) {
340 ClearPageUptodate(page);
341 dec_page_count(sbi, F2FS_DIRTY_META);
347 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
349 if (wbc->for_reclaim && page->index < GET_SUM_BLOCK(sbi, 0))
352 f2fs_do_write_meta_page(sbi, page, io_type);
353 dec_page_count(sbi, F2FS_DIRTY_META);
355 if (wbc->for_reclaim)
356 f2fs_submit_merged_write_cond(sbi, NULL, page, 0, META);
360 if (unlikely(f2fs_cp_error(sbi)))
361 f2fs_submit_merged_write(sbi, META);
366 redirty_page_for_writepage(wbc, page);
367 return AOP_WRITEPAGE_ACTIVATE;
370 static int f2fs_write_meta_page(struct page *page,
371 struct writeback_control *wbc)
373 return __f2fs_write_meta_page(page, wbc, FS_META_IO);
376 static int f2fs_write_meta_pages(struct address_space *mapping,
377 struct writeback_control *wbc)
379 struct f2fs_sb_info *sbi = F2FS_M_SB(mapping);
382 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
385 /* collect a number of dirty meta pages and write together */
386 if (wbc->sync_mode != WB_SYNC_ALL &&
387 get_pages(sbi, F2FS_DIRTY_META) <
388 nr_pages_to_skip(sbi, META))
391 /* if locked failed, cp will flush dirty pages instead */
392 if (!f2fs_down_write_trylock(&sbi->cp_global_sem))
395 trace_f2fs_writepages(mapping->host, wbc, META);
396 diff = nr_pages_to_write(sbi, META, wbc);
397 written = f2fs_sync_meta_pages(sbi, META, wbc->nr_to_write, FS_META_IO);
398 f2fs_up_write(&sbi->cp_global_sem);
399 wbc->nr_to_write = max((long)0, wbc->nr_to_write - written - diff);
403 wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_META);
404 trace_f2fs_writepages(mapping->host, wbc, META);
408 long f2fs_sync_meta_pages(struct f2fs_sb_info *sbi, enum page_type type,
409 long nr_to_write, enum iostat_type io_type)
411 struct address_space *mapping = META_MAPPING(sbi);
412 pgoff_t index = 0, prev = ULONG_MAX;
413 struct folio_batch fbatch;
416 struct writeback_control wbc = {
419 struct blk_plug plug;
421 folio_batch_init(&fbatch);
423 blk_start_plug(&plug);
425 while ((nr_folios = filemap_get_folios_tag(mapping, &index,
427 PAGECACHE_TAG_DIRTY, &fbatch))) {
430 for (i = 0; i < nr_folios; i++) {
431 struct folio *folio = fbatch.folios[i];
433 if (nr_to_write != LONG_MAX && i != 0 &&
434 folio->index != prev +
435 folio_nr_pages(fbatch.folios[i-1])) {
436 folio_batch_release(&fbatch);
442 if (unlikely(folio->mapping != mapping)) {
447 if (!folio_test_dirty(folio)) {
448 /* someone wrote it for us */
449 goto continue_unlock;
452 f2fs_wait_on_page_writeback(&folio->page, META,
455 if (!folio_clear_dirty_for_io(folio))
456 goto continue_unlock;
458 if (__f2fs_write_meta_page(&folio->page, &wbc,
463 nwritten += folio_nr_pages(folio);
465 if (unlikely(nwritten >= nr_to_write))
468 folio_batch_release(&fbatch);
473 f2fs_submit_merged_write(sbi, type);
475 blk_finish_plug(&plug);
480 static bool f2fs_dirty_meta_folio(struct address_space *mapping,
483 trace_f2fs_set_page_dirty(&folio->page, META);
485 if (!folio_test_uptodate(folio))
486 folio_mark_uptodate(folio);
487 if (filemap_dirty_folio(mapping, folio)) {
488 inc_page_count(F2FS_M_SB(mapping), F2FS_DIRTY_META);
489 set_page_private_reference(&folio->page);
495 const struct address_space_operations f2fs_meta_aops = {
496 .writepage = f2fs_write_meta_page,
497 .writepages = f2fs_write_meta_pages,
498 .dirty_folio = f2fs_dirty_meta_folio,
499 .invalidate_folio = f2fs_invalidate_folio,
500 .release_folio = f2fs_release_folio,
501 .migrate_folio = filemap_migrate_folio,
504 static void __add_ino_entry(struct f2fs_sb_info *sbi, nid_t ino,
505 unsigned int devidx, int type)
507 struct inode_management *im = &sbi->im[type];
508 struct ino_entry *e = NULL, *new = NULL;
510 if (type == FLUSH_INO) {
512 e = radix_tree_lookup(&im->ino_root, ino);
518 new = f2fs_kmem_cache_alloc(ino_entry_slab,
519 GFP_NOFS, true, NULL);
521 radix_tree_preload(GFP_NOFS | __GFP_NOFAIL);
523 spin_lock(&im->ino_lock);
524 e = radix_tree_lookup(&im->ino_root, ino);
527 spin_unlock(&im->ino_lock);
528 radix_tree_preload_end();
532 if (unlikely(radix_tree_insert(&im->ino_root, ino, e)))
535 memset(e, 0, sizeof(struct ino_entry));
538 list_add_tail(&e->list, &im->ino_list);
539 if (type != ORPHAN_INO)
543 if (type == FLUSH_INO)
544 f2fs_set_bit(devidx, (char *)&e->dirty_device);
546 spin_unlock(&im->ino_lock);
547 radix_tree_preload_end();
550 kmem_cache_free(ino_entry_slab, new);
553 static void __remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type)
555 struct inode_management *im = &sbi->im[type];
558 spin_lock(&im->ino_lock);
559 e = radix_tree_lookup(&im->ino_root, ino);
562 radix_tree_delete(&im->ino_root, ino);
564 spin_unlock(&im->ino_lock);
565 kmem_cache_free(ino_entry_slab, e);
568 spin_unlock(&im->ino_lock);
571 void f2fs_add_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type)
573 /* add new dirty ino entry into list */
574 __add_ino_entry(sbi, ino, 0, type);
577 void f2fs_remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type)
579 /* remove dirty ino entry from list */
580 __remove_ino_entry(sbi, ino, type);
583 /* mode should be APPEND_INO, UPDATE_INO or TRANS_DIR_INO */
584 bool f2fs_exist_written_data(struct f2fs_sb_info *sbi, nid_t ino, int mode)
586 struct inode_management *im = &sbi->im[mode];
589 spin_lock(&im->ino_lock);
590 e = radix_tree_lookup(&im->ino_root, ino);
591 spin_unlock(&im->ino_lock);
592 return e ? true : false;
595 void f2fs_release_ino_entry(struct f2fs_sb_info *sbi, bool all)
597 struct ino_entry *e, *tmp;
600 for (i = all ? ORPHAN_INO : APPEND_INO; i < MAX_INO_ENTRY; i++) {
601 struct inode_management *im = &sbi->im[i];
603 spin_lock(&im->ino_lock);
604 list_for_each_entry_safe(e, tmp, &im->ino_list, list) {
606 radix_tree_delete(&im->ino_root, e->ino);
607 kmem_cache_free(ino_entry_slab, e);
610 spin_unlock(&im->ino_lock);
614 void f2fs_set_dirty_device(struct f2fs_sb_info *sbi, nid_t ino,
615 unsigned int devidx, int type)
617 __add_ino_entry(sbi, ino, devidx, type);
620 bool f2fs_is_dirty_device(struct f2fs_sb_info *sbi, nid_t ino,
621 unsigned int devidx, int type)
623 struct inode_management *im = &sbi->im[type];
625 bool is_dirty = false;
627 spin_lock(&im->ino_lock);
628 e = radix_tree_lookup(&im->ino_root, ino);
629 if (e && f2fs_test_bit(devidx, (char *)&e->dirty_device))
631 spin_unlock(&im->ino_lock);
635 int f2fs_acquire_orphan_inode(struct f2fs_sb_info *sbi)
637 struct inode_management *im = &sbi->im[ORPHAN_INO];
640 spin_lock(&im->ino_lock);
642 if (time_to_inject(sbi, FAULT_ORPHAN)) {
643 spin_unlock(&im->ino_lock);
647 if (unlikely(im->ino_num >= sbi->max_orphans))
651 spin_unlock(&im->ino_lock);
656 void f2fs_release_orphan_inode(struct f2fs_sb_info *sbi)
658 struct inode_management *im = &sbi->im[ORPHAN_INO];
660 spin_lock(&im->ino_lock);
661 f2fs_bug_on(sbi, im->ino_num == 0);
663 spin_unlock(&im->ino_lock);
666 void f2fs_add_orphan_inode(struct inode *inode)
668 /* add new orphan ino entry into list */
669 __add_ino_entry(F2FS_I_SB(inode), inode->i_ino, 0, ORPHAN_INO);
670 f2fs_update_inode_page(inode);
673 void f2fs_remove_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino)
675 /* remove orphan entry from orphan list */
676 __remove_ino_entry(sbi, ino, ORPHAN_INO);
679 static int recover_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino)
685 inode = f2fs_iget_retry(sbi->sb, ino);
688 * there should be a bug that we can't find the entry
691 f2fs_bug_on(sbi, PTR_ERR(inode) == -ENOENT);
692 return PTR_ERR(inode);
695 err = f2fs_dquot_initialize(inode);
703 /* truncate all the data during iput */
706 err = f2fs_get_node_info(sbi, ino, &ni, false);
710 /* ENOMEM was fully retried in f2fs_evict_inode. */
711 if (ni.blk_addr != NULL_ADDR) {
718 set_sbi_flag(sbi, SBI_NEED_FSCK);
719 f2fs_warn(sbi, "%s: orphan failed (ino=%x), run fsck to fix.",
724 int f2fs_recover_orphan_inodes(struct f2fs_sb_info *sbi)
726 block_t start_blk, orphan_blocks, i, j;
729 if (!is_set_ckpt_flags(sbi, CP_ORPHAN_PRESENT_FLAG))
732 if (f2fs_hw_is_readonly(sbi)) {
733 f2fs_info(sbi, "write access unavailable, skipping orphan cleanup");
737 if (is_sbi_flag_set(sbi, SBI_IS_WRITABLE))
738 f2fs_info(sbi, "orphan cleanup on readonly fs");
740 start_blk = __start_cp_addr(sbi) + 1 + __cp_payload(sbi);
741 orphan_blocks = __start_sum_addr(sbi) - 1 - __cp_payload(sbi);
743 f2fs_ra_meta_pages(sbi, start_blk, orphan_blocks, META_CP, true);
745 for (i = 0; i < orphan_blocks; i++) {
747 struct f2fs_orphan_block *orphan_blk;
749 page = f2fs_get_meta_page(sbi, start_blk + i);
755 orphan_blk = (struct f2fs_orphan_block *)page_address(page);
756 for (j = 0; j < le32_to_cpu(orphan_blk->entry_count); j++) {
757 nid_t ino = le32_to_cpu(orphan_blk->ino[j]);
759 err = recover_orphan_inode(sbi, ino);
761 f2fs_put_page(page, 1);
765 f2fs_put_page(page, 1);
767 /* clear Orphan Flag */
768 clear_ckpt_flags(sbi, CP_ORPHAN_PRESENT_FLAG);
770 set_sbi_flag(sbi, SBI_IS_RECOVERED);
775 static void write_orphan_inodes(struct f2fs_sb_info *sbi, block_t start_blk)
777 struct list_head *head;
778 struct f2fs_orphan_block *orphan_blk = NULL;
779 unsigned int nentries = 0;
780 unsigned short index = 1;
781 unsigned short orphan_blocks;
782 struct page *page = NULL;
783 struct ino_entry *orphan = NULL;
784 struct inode_management *im = &sbi->im[ORPHAN_INO];
786 orphan_blocks = GET_ORPHAN_BLOCKS(im->ino_num);
789 * we don't need to do spin_lock(&im->ino_lock) here, since all the
790 * orphan inode operations are covered under f2fs_lock_op().
791 * And, spin_lock should be avoided due to page operations below.
793 head = &im->ino_list;
795 /* loop for each orphan inode entry and write them in journal block */
796 list_for_each_entry(orphan, head, list) {
798 page = f2fs_grab_meta_page(sbi, start_blk++);
800 (struct f2fs_orphan_block *)page_address(page);
801 memset(orphan_blk, 0, sizeof(*orphan_blk));
804 orphan_blk->ino[nentries++] = cpu_to_le32(orphan->ino);
806 if (nentries == F2FS_ORPHANS_PER_BLOCK) {
808 * an orphan block is full of 1020 entries,
809 * then we need to flush current orphan blocks
810 * and bring another one in memory
812 orphan_blk->blk_addr = cpu_to_le16(index);
813 orphan_blk->blk_count = cpu_to_le16(orphan_blocks);
814 orphan_blk->entry_count = cpu_to_le32(nentries);
815 set_page_dirty(page);
816 f2fs_put_page(page, 1);
824 orphan_blk->blk_addr = cpu_to_le16(index);
825 orphan_blk->blk_count = cpu_to_le16(orphan_blocks);
826 orphan_blk->entry_count = cpu_to_le32(nentries);
827 set_page_dirty(page);
828 f2fs_put_page(page, 1);
832 static __u32 f2fs_checkpoint_chksum(struct f2fs_sb_info *sbi,
833 struct f2fs_checkpoint *ckpt)
835 unsigned int chksum_ofs = le32_to_cpu(ckpt->checksum_offset);
838 chksum = f2fs_crc32(sbi, ckpt, chksum_ofs);
839 if (chksum_ofs < CP_CHKSUM_OFFSET) {
840 chksum_ofs += sizeof(chksum);
841 chksum = f2fs_chksum(sbi, chksum, (__u8 *)ckpt + chksum_ofs,
842 F2FS_BLKSIZE - chksum_ofs);
847 static int get_checkpoint_version(struct f2fs_sb_info *sbi, block_t cp_addr,
848 struct f2fs_checkpoint **cp_block, struct page **cp_page,
849 unsigned long long *version)
851 size_t crc_offset = 0;
854 *cp_page = f2fs_get_meta_page(sbi, cp_addr);
855 if (IS_ERR(*cp_page))
856 return PTR_ERR(*cp_page);
858 *cp_block = (struct f2fs_checkpoint *)page_address(*cp_page);
860 crc_offset = le32_to_cpu((*cp_block)->checksum_offset);
861 if (crc_offset < CP_MIN_CHKSUM_OFFSET ||
862 crc_offset > CP_CHKSUM_OFFSET) {
863 f2fs_put_page(*cp_page, 1);
864 f2fs_warn(sbi, "invalid crc_offset: %zu", crc_offset);
868 crc = f2fs_checkpoint_chksum(sbi, *cp_block);
869 if (crc != cur_cp_crc(*cp_block)) {
870 f2fs_put_page(*cp_page, 1);
871 f2fs_warn(sbi, "invalid crc value");
875 *version = cur_cp_version(*cp_block);
879 static struct page *validate_checkpoint(struct f2fs_sb_info *sbi,
880 block_t cp_addr, unsigned long long *version)
882 struct page *cp_page_1 = NULL, *cp_page_2 = NULL;
883 struct f2fs_checkpoint *cp_block = NULL;
884 unsigned long long cur_version = 0, pre_version = 0;
885 unsigned int cp_blocks;
888 err = get_checkpoint_version(sbi, cp_addr, &cp_block,
889 &cp_page_1, version);
893 cp_blocks = le32_to_cpu(cp_block->cp_pack_total_block_count);
895 if (cp_blocks > sbi->blocks_per_seg || cp_blocks <= F2FS_CP_PACKS) {
896 f2fs_warn(sbi, "invalid cp_pack_total_block_count:%u",
897 le32_to_cpu(cp_block->cp_pack_total_block_count));
900 pre_version = *version;
902 cp_addr += cp_blocks - 1;
903 err = get_checkpoint_version(sbi, cp_addr, &cp_block,
904 &cp_page_2, version);
907 cur_version = *version;
909 if (cur_version == pre_version) {
910 *version = cur_version;
911 f2fs_put_page(cp_page_2, 1);
914 f2fs_put_page(cp_page_2, 1);
916 f2fs_put_page(cp_page_1, 1);
920 int f2fs_get_valid_checkpoint(struct f2fs_sb_info *sbi)
922 struct f2fs_checkpoint *cp_block;
923 struct f2fs_super_block *fsb = sbi->raw_super;
924 struct page *cp1, *cp2, *cur_page;
925 unsigned long blk_size = sbi->blocksize;
926 unsigned long long cp1_version = 0, cp2_version = 0;
927 unsigned long long cp_start_blk_no;
928 unsigned int cp_blks = 1 + __cp_payload(sbi);
933 sbi->ckpt = f2fs_kvzalloc(sbi, array_size(blk_size, cp_blks),
938 * Finding out valid cp block involves read both
939 * sets( cp pack 1 and cp pack 2)
941 cp_start_blk_no = le32_to_cpu(fsb->cp_blkaddr);
942 cp1 = validate_checkpoint(sbi, cp_start_blk_no, &cp1_version);
944 /* The second checkpoint pack should start at the next segment */
945 cp_start_blk_no += ((unsigned long long)1) <<
946 le32_to_cpu(fsb->log_blocks_per_seg);
947 cp2 = validate_checkpoint(sbi, cp_start_blk_no, &cp2_version);
950 if (ver_after(cp2_version, cp1_version))
963 cp_block = (struct f2fs_checkpoint *)page_address(cur_page);
964 memcpy(sbi->ckpt, cp_block, blk_size);
967 sbi->cur_cp_pack = 1;
969 sbi->cur_cp_pack = 2;
971 /* Sanity checking of checkpoint */
972 if (f2fs_sanity_check_ckpt(sbi)) {
974 goto free_fail_no_cp;
980 cp_blk_no = le32_to_cpu(fsb->cp_blkaddr);
982 cp_blk_no += BIT(le32_to_cpu(fsb->log_blocks_per_seg));
984 for (i = 1; i < cp_blks; i++) {
985 void *sit_bitmap_ptr;
986 unsigned char *ckpt = (unsigned char *)sbi->ckpt;
988 cur_page = f2fs_get_meta_page(sbi, cp_blk_no + i);
989 if (IS_ERR(cur_page)) {
990 err = PTR_ERR(cur_page);
991 goto free_fail_no_cp;
993 sit_bitmap_ptr = page_address(cur_page);
994 memcpy(ckpt + i * blk_size, sit_bitmap_ptr, blk_size);
995 f2fs_put_page(cur_page, 1);
998 f2fs_put_page(cp1, 1);
999 f2fs_put_page(cp2, 1);
1003 f2fs_put_page(cp1, 1);
1004 f2fs_put_page(cp2, 1);
1010 static void __add_dirty_inode(struct inode *inode, enum inode_type type)
1012 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1013 int flag = (type == DIR_INODE) ? FI_DIRTY_DIR : FI_DIRTY_FILE;
1015 if (is_inode_flag_set(inode, flag))
1018 set_inode_flag(inode, flag);
1019 list_add_tail(&F2FS_I(inode)->dirty_list, &sbi->inode_list[type]);
1020 stat_inc_dirty_inode(sbi, type);
1023 static void __remove_dirty_inode(struct inode *inode, enum inode_type type)
1025 int flag = (type == DIR_INODE) ? FI_DIRTY_DIR : FI_DIRTY_FILE;
1027 if (get_dirty_pages(inode) || !is_inode_flag_set(inode, flag))
1030 list_del_init(&F2FS_I(inode)->dirty_list);
1031 clear_inode_flag(inode, flag);
1032 stat_dec_dirty_inode(F2FS_I_SB(inode), type);
1035 void f2fs_update_dirty_folio(struct inode *inode, struct folio *folio)
1037 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1038 enum inode_type type = S_ISDIR(inode->i_mode) ? DIR_INODE : FILE_INODE;
1040 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&
1041 !S_ISLNK(inode->i_mode))
1044 spin_lock(&sbi->inode_lock[type]);
1045 if (type != FILE_INODE || test_opt(sbi, DATA_FLUSH))
1046 __add_dirty_inode(inode, type);
1047 inode_inc_dirty_pages(inode);
1048 spin_unlock(&sbi->inode_lock[type]);
1050 set_page_private_reference(&folio->page);
1053 void f2fs_remove_dirty_inode(struct inode *inode)
1055 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1056 enum inode_type type = S_ISDIR(inode->i_mode) ? DIR_INODE : FILE_INODE;
1058 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&
1059 !S_ISLNK(inode->i_mode))
1062 if (type == FILE_INODE && !test_opt(sbi, DATA_FLUSH))
1065 spin_lock(&sbi->inode_lock[type]);
1066 __remove_dirty_inode(inode, type);
1067 spin_unlock(&sbi->inode_lock[type]);
1070 int f2fs_sync_dirty_inodes(struct f2fs_sb_info *sbi, enum inode_type type,
1073 struct list_head *head;
1074 struct inode *inode;
1075 struct f2fs_inode_info *fi;
1076 bool is_dir = (type == DIR_INODE);
1077 unsigned long ino = 0;
1079 trace_f2fs_sync_dirty_inodes_enter(sbi->sb, is_dir,
1080 get_pages(sbi, is_dir ?
1081 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA));
1083 if (unlikely(f2fs_cp_error(sbi))) {
1084 trace_f2fs_sync_dirty_inodes_exit(sbi->sb, is_dir,
1085 get_pages(sbi, is_dir ?
1086 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA));
1090 spin_lock(&sbi->inode_lock[type]);
1092 head = &sbi->inode_list[type];
1093 if (list_empty(head)) {
1094 spin_unlock(&sbi->inode_lock[type]);
1095 trace_f2fs_sync_dirty_inodes_exit(sbi->sb, is_dir,
1096 get_pages(sbi, is_dir ?
1097 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA));
1100 fi = list_first_entry(head, struct f2fs_inode_info, dirty_list);
1101 inode = igrab(&fi->vfs_inode);
1102 spin_unlock(&sbi->inode_lock[type]);
1104 unsigned long cur_ino = inode->i_ino;
1107 F2FS_I(inode)->cp_task = current;
1108 F2FS_I(inode)->wb_task = current;
1110 filemap_fdatawrite(inode->i_mapping);
1112 F2FS_I(inode)->wb_task = NULL;
1114 F2FS_I(inode)->cp_task = NULL;
1117 /* We need to give cpu to another writers. */
1124 * We should submit bio, since it exists several
1125 * writebacking dentry pages in the freeing inode.
1127 f2fs_submit_merged_write(sbi, DATA);
1133 static int f2fs_sync_inode_meta(struct f2fs_sb_info *sbi)
1135 struct list_head *head = &sbi->inode_list[DIRTY_META];
1136 struct inode *inode;
1137 struct f2fs_inode_info *fi;
1138 s64 total = get_pages(sbi, F2FS_DIRTY_IMETA);
1141 if (unlikely(f2fs_cp_error(sbi)))
1144 spin_lock(&sbi->inode_lock[DIRTY_META]);
1145 if (list_empty(head)) {
1146 spin_unlock(&sbi->inode_lock[DIRTY_META]);
1149 fi = list_first_entry(head, struct f2fs_inode_info,
1151 inode = igrab(&fi->vfs_inode);
1152 spin_unlock(&sbi->inode_lock[DIRTY_META]);
1154 sync_inode_metadata(inode, 0);
1156 /* it's on eviction */
1157 if (is_inode_flag_set(inode, FI_DIRTY_INODE))
1158 f2fs_update_inode_page(inode);
1165 static void __prepare_cp_block(struct f2fs_sb_info *sbi)
1167 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1168 struct f2fs_nm_info *nm_i = NM_I(sbi);
1169 nid_t last_nid = nm_i->next_scan_nid;
1171 next_free_nid(sbi, &last_nid);
1172 ckpt->valid_block_count = cpu_to_le64(valid_user_blocks(sbi));
1173 ckpt->valid_node_count = cpu_to_le32(valid_node_count(sbi));
1174 ckpt->valid_inode_count = cpu_to_le32(valid_inode_count(sbi));
1175 ckpt->next_free_nid = cpu_to_le32(last_nid);
1178 static bool __need_flush_quota(struct f2fs_sb_info *sbi)
1182 if (!is_journalled_quota(sbi))
1185 if (!f2fs_down_write_trylock(&sbi->quota_sem))
1187 if (is_sbi_flag_set(sbi, SBI_QUOTA_SKIP_FLUSH)) {
1189 } else if (is_sbi_flag_set(sbi, SBI_QUOTA_NEED_REPAIR)) {
1191 } else if (is_sbi_flag_set(sbi, SBI_QUOTA_NEED_FLUSH)) {
1192 clear_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH);
1194 } else if (get_pages(sbi, F2FS_DIRTY_QDATA)) {
1197 f2fs_up_write(&sbi->quota_sem);
1202 * Freeze all the FS-operations for checkpoint.
1204 static int block_operations(struct f2fs_sb_info *sbi)
1206 struct writeback_control wbc = {
1207 .sync_mode = WB_SYNC_ALL,
1208 .nr_to_write = LONG_MAX,
1211 int err = 0, cnt = 0;
1214 * Let's flush inline_data in dirty node pages.
1216 f2fs_flush_inline_data(sbi);
1220 if (__need_flush_quota(sbi)) {
1223 if (++cnt > DEFAULT_RETRY_QUOTA_FLUSH_COUNT) {
1224 set_sbi_flag(sbi, SBI_QUOTA_SKIP_FLUSH);
1225 set_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH);
1226 goto retry_flush_dents;
1228 f2fs_unlock_all(sbi);
1230 /* only failed during mount/umount/freeze/quotactl */
1231 locked = down_read_trylock(&sbi->sb->s_umount);
1232 f2fs_quota_sync(sbi->sb, -1);
1234 up_read(&sbi->sb->s_umount);
1236 goto retry_flush_quotas;
1240 /* write all the dirty dentry pages */
1241 if (get_pages(sbi, F2FS_DIRTY_DENTS)) {
1242 f2fs_unlock_all(sbi);
1243 err = f2fs_sync_dirty_inodes(sbi, DIR_INODE, true);
1247 goto retry_flush_quotas;
1251 * POR: we should ensure that there are no dirty node pages
1252 * until finishing nat/sit flush. inode->i_blocks can be updated.
1254 f2fs_down_write(&sbi->node_change);
1256 if (get_pages(sbi, F2FS_DIRTY_IMETA)) {
1257 f2fs_up_write(&sbi->node_change);
1258 f2fs_unlock_all(sbi);
1259 err = f2fs_sync_inode_meta(sbi);
1263 goto retry_flush_quotas;
1267 f2fs_down_write(&sbi->node_write);
1269 if (get_pages(sbi, F2FS_DIRTY_NODES)) {
1270 f2fs_up_write(&sbi->node_write);
1271 atomic_inc(&sbi->wb_sync_req[NODE]);
1272 err = f2fs_sync_node_pages(sbi, &wbc, false, FS_CP_NODE_IO);
1273 atomic_dec(&sbi->wb_sync_req[NODE]);
1275 f2fs_up_write(&sbi->node_change);
1276 f2fs_unlock_all(sbi);
1280 goto retry_flush_nodes;
1284 * sbi->node_change is used only for AIO write_begin path which produces
1285 * dirty node blocks and some checkpoint values by block allocation.
1287 __prepare_cp_block(sbi);
1288 f2fs_up_write(&sbi->node_change);
1292 static void unblock_operations(struct f2fs_sb_info *sbi)
1294 f2fs_up_write(&sbi->node_write);
1295 f2fs_unlock_all(sbi);
1298 void f2fs_wait_on_all_pages(struct f2fs_sb_info *sbi, int type)
1303 if (!get_pages(sbi, type))
1306 if (unlikely(f2fs_cp_error(sbi) &&
1307 !is_sbi_flag_set(sbi, SBI_IS_CLOSE)))
1310 if (type == F2FS_DIRTY_META)
1311 f2fs_sync_meta_pages(sbi, META, LONG_MAX,
1313 else if (type == F2FS_WB_CP_DATA)
1314 f2fs_submit_merged_write(sbi, DATA);
1316 prepare_to_wait(&sbi->cp_wait, &wait, TASK_UNINTERRUPTIBLE);
1317 io_schedule_timeout(DEFAULT_IO_TIMEOUT);
1319 finish_wait(&sbi->cp_wait, &wait);
1322 static void update_ckpt_flags(struct f2fs_sb_info *sbi, struct cp_control *cpc)
1324 unsigned long orphan_num = sbi->im[ORPHAN_INO].ino_num;
1325 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1326 unsigned long flags;
1328 if (cpc->reason & CP_UMOUNT) {
1329 if (le32_to_cpu(ckpt->cp_pack_total_block_count) +
1330 NM_I(sbi)->nat_bits_blocks > sbi->blocks_per_seg) {
1331 clear_ckpt_flags(sbi, CP_NAT_BITS_FLAG);
1332 f2fs_notice(sbi, "Disable nat_bits due to no space");
1333 } else if (!is_set_ckpt_flags(sbi, CP_NAT_BITS_FLAG) &&
1334 f2fs_nat_bitmap_enabled(sbi)) {
1335 f2fs_enable_nat_bits(sbi);
1336 set_ckpt_flags(sbi, CP_NAT_BITS_FLAG);
1337 f2fs_notice(sbi, "Rebuild and enable nat_bits");
1341 spin_lock_irqsave(&sbi->cp_lock, flags);
1343 if (cpc->reason & CP_TRIMMED)
1344 __set_ckpt_flags(ckpt, CP_TRIMMED_FLAG);
1346 __clear_ckpt_flags(ckpt, CP_TRIMMED_FLAG);
1348 if (cpc->reason & CP_UMOUNT)
1349 __set_ckpt_flags(ckpt, CP_UMOUNT_FLAG);
1351 __clear_ckpt_flags(ckpt, CP_UMOUNT_FLAG);
1353 if (cpc->reason & CP_FASTBOOT)
1354 __set_ckpt_flags(ckpt, CP_FASTBOOT_FLAG);
1356 __clear_ckpt_flags(ckpt, CP_FASTBOOT_FLAG);
1359 __set_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG);
1361 __clear_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG);
1363 if (is_sbi_flag_set(sbi, SBI_NEED_FSCK))
1364 __set_ckpt_flags(ckpt, CP_FSCK_FLAG);
1366 if (is_sbi_flag_set(sbi, SBI_IS_RESIZEFS))
1367 __set_ckpt_flags(ckpt, CP_RESIZEFS_FLAG);
1369 __clear_ckpt_flags(ckpt, CP_RESIZEFS_FLAG);
1371 if (is_sbi_flag_set(sbi, SBI_CP_DISABLED))
1372 __set_ckpt_flags(ckpt, CP_DISABLED_FLAG);
1374 __clear_ckpt_flags(ckpt, CP_DISABLED_FLAG);
1376 if (is_sbi_flag_set(sbi, SBI_CP_DISABLED_QUICK))
1377 __set_ckpt_flags(ckpt, CP_DISABLED_QUICK_FLAG);
1379 __clear_ckpt_flags(ckpt, CP_DISABLED_QUICK_FLAG);
1381 if (is_sbi_flag_set(sbi, SBI_QUOTA_SKIP_FLUSH))
1382 __set_ckpt_flags(ckpt, CP_QUOTA_NEED_FSCK_FLAG);
1384 __clear_ckpt_flags(ckpt, CP_QUOTA_NEED_FSCK_FLAG);
1386 if (is_sbi_flag_set(sbi, SBI_QUOTA_NEED_REPAIR))
1387 __set_ckpt_flags(ckpt, CP_QUOTA_NEED_FSCK_FLAG);
1389 /* set this flag to activate crc|cp_ver for recovery */
1390 __set_ckpt_flags(ckpt, CP_CRC_RECOVERY_FLAG);
1391 __clear_ckpt_flags(ckpt, CP_NOCRC_RECOVERY_FLAG);
1393 spin_unlock_irqrestore(&sbi->cp_lock, flags);
1396 static void commit_checkpoint(struct f2fs_sb_info *sbi,
1397 void *src, block_t blk_addr)
1399 struct writeback_control wbc = {
1404 * filemap_get_folios_tag and lock_page again will take
1405 * some extra time. Therefore, f2fs_update_meta_pages and
1406 * f2fs_sync_meta_pages are combined in this function.
1408 struct page *page = f2fs_grab_meta_page(sbi, blk_addr);
1411 f2fs_wait_on_page_writeback(page, META, true, true);
1413 memcpy(page_address(page), src, PAGE_SIZE);
1415 set_page_dirty(page);
1416 if (unlikely(!clear_page_dirty_for_io(page)))
1417 f2fs_bug_on(sbi, 1);
1419 /* writeout cp pack 2 page */
1420 err = __f2fs_write_meta_page(page, &wbc, FS_CP_META_IO);
1421 if (unlikely(err && f2fs_cp_error(sbi))) {
1422 f2fs_put_page(page, 1);
1426 f2fs_bug_on(sbi, err);
1427 f2fs_put_page(page, 0);
1429 /* submit checkpoint (with barrier if NOBARRIER is not set) */
1430 f2fs_submit_merged_write(sbi, META_FLUSH);
1433 static inline u64 get_sectors_written(struct block_device *bdev)
1435 return (u64)part_stat_read(bdev, sectors[STAT_WRITE]);
1438 u64 f2fs_get_sectors_written(struct f2fs_sb_info *sbi)
1440 if (f2fs_is_multi_device(sbi)) {
1444 for (i = 0; i < sbi->s_ndevs; i++)
1445 sectors += get_sectors_written(FDEV(i).bdev);
1450 return get_sectors_written(sbi->sb->s_bdev);
1453 static int do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
1455 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1456 struct f2fs_nm_info *nm_i = NM_I(sbi);
1457 unsigned long orphan_num = sbi->im[ORPHAN_INO].ino_num, flags;
1459 unsigned int data_sum_blocks, orphan_blocks;
1462 int cp_payload_blks = __cp_payload(sbi);
1463 struct curseg_info *seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE);
1467 /* Flush all the NAT/SIT pages */
1468 f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_CP_META_IO);
1470 /* start to update checkpoint, cp ver is already updated previously */
1471 ckpt->elapsed_time = cpu_to_le64(get_mtime(sbi, true));
1472 ckpt->free_segment_count = cpu_to_le32(free_segments(sbi));
1473 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
1474 struct curseg_info *curseg = CURSEG_I(sbi, i + CURSEG_HOT_NODE);
1476 ckpt->cur_node_segno[i] = cpu_to_le32(curseg->segno);
1477 ckpt->cur_node_blkoff[i] = cpu_to_le16(curseg->next_blkoff);
1478 ckpt->alloc_type[i + CURSEG_HOT_NODE] = curseg->alloc_type;
1480 for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) {
1481 struct curseg_info *curseg = CURSEG_I(sbi, i + CURSEG_HOT_DATA);
1483 ckpt->cur_data_segno[i] = cpu_to_le32(curseg->segno);
1484 ckpt->cur_data_blkoff[i] = cpu_to_le16(curseg->next_blkoff);
1485 ckpt->alloc_type[i + CURSEG_HOT_DATA] = curseg->alloc_type;
1488 /* 2 cp + n data seg summary + orphan inode blocks */
1489 data_sum_blocks = f2fs_npages_for_summary_flush(sbi, false);
1490 spin_lock_irqsave(&sbi->cp_lock, flags);
1491 if (data_sum_blocks < NR_CURSEG_DATA_TYPE)
1492 __set_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG);
1494 __clear_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG);
1495 spin_unlock_irqrestore(&sbi->cp_lock, flags);
1497 orphan_blocks = GET_ORPHAN_BLOCKS(orphan_num);
1498 ckpt->cp_pack_start_sum = cpu_to_le32(1 + cp_payload_blks +
1501 if (__remain_node_summaries(cpc->reason))
1502 ckpt->cp_pack_total_block_count = cpu_to_le32(F2FS_CP_PACKS +
1503 cp_payload_blks + data_sum_blocks +
1504 orphan_blocks + NR_CURSEG_NODE_TYPE);
1506 ckpt->cp_pack_total_block_count = cpu_to_le32(F2FS_CP_PACKS +
1507 cp_payload_blks + data_sum_blocks +
1510 /* update ckpt flag for checkpoint */
1511 update_ckpt_flags(sbi, cpc);
1513 /* update SIT/NAT bitmap */
1514 get_sit_bitmap(sbi, __bitmap_ptr(sbi, SIT_BITMAP));
1515 get_nat_bitmap(sbi, __bitmap_ptr(sbi, NAT_BITMAP));
1517 crc32 = f2fs_checkpoint_chksum(sbi, ckpt);
1518 *((__le32 *)((unsigned char *)ckpt +
1519 le32_to_cpu(ckpt->checksum_offset)))
1520 = cpu_to_le32(crc32);
1522 start_blk = __start_cp_next_addr(sbi);
1524 /* write nat bits */
1525 if ((cpc->reason & CP_UMOUNT) &&
1526 is_set_ckpt_flags(sbi, CP_NAT_BITS_FLAG)) {
1527 __u64 cp_ver = cur_cp_version(ckpt);
1530 cp_ver |= ((__u64)crc32 << 32);
1531 *(__le64 *)nm_i->nat_bits = cpu_to_le64(cp_ver);
1533 blk = start_blk + sbi->blocks_per_seg - nm_i->nat_bits_blocks;
1534 for (i = 0; i < nm_i->nat_bits_blocks; i++)
1535 f2fs_update_meta_page(sbi, nm_i->nat_bits +
1536 (i << F2FS_BLKSIZE_BITS), blk + i);
1539 /* write out checkpoint buffer at block 0 */
1540 f2fs_update_meta_page(sbi, ckpt, start_blk++);
1542 for (i = 1; i < 1 + cp_payload_blks; i++)
1543 f2fs_update_meta_page(sbi, (char *)ckpt + i * F2FS_BLKSIZE,
1547 write_orphan_inodes(sbi, start_blk);
1548 start_blk += orphan_blocks;
1551 f2fs_write_data_summaries(sbi, start_blk);
1552 start_blk += data_sum_blocks;
1554 /* Record write statistics in the hot node summary */
1555 kbytes_written = sbi->kbytes_written;
1556 kbytes_written += (f2fs_get_sectors_written(sbi) -
1557 sbi->sectors_written_start) >> 1;
1558 seg_i->journal->info.kbytes_written = cpu_to_le64(kbytes_written);
1560 if (__remain_node_summaries(cpc->reason)) {
1561 f2fs_write_node_summaries(sbi, start_blk);
1562 start_blk += NR_CURSEG_NODE_TYPE;
1565 /* update user_block_counts */
1566 sbi->last_valid_block_count = sbi->total_valid_block_count;
1567 percpu_counter_set(&sbi->alloc_valid_block_count, 0);
1568 percpu_counter_set(&sbi->rf_node_block_count, 0);
1570 /* Here, we have one bio having CP pack except cp pack 2 page */
1571 f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_CP_META_IO);
1572 /* Wait for all dirty meta pages to be submitted for IO */
1573 f2fs_wait_on_all_pages(sbi, F2FS_DIRTY_META);
1575 /* wait for previous submitted meta pages writeback */
1576 f2fs_wait_on_all_pages(sbi, F2FS_WB_CP_DATA);
1578 /* flush all device cache */
1579 err = f2fs_flush_device_cache(sbi);
1583 /* barrier and flush checkpoint cp pack 2 page if it can */
1584 commit_checkpoint(sbi, ckpt, start_blk);
1585 f2fs_wait_on_all_pages(sbi, F2FS_WB_CP_DATA);
1588 * invalidate intermediate page cache borrowed from meta inode which are
1589 * used for migration of encrypted, verity or compressed inode's blocks.
1591 if (f2fs_sb_has_encrypt(sbi) || f2fs_sb_has_verity(sbi) ||
1592 f2fs_sb_has_compression(sbi))
1593 invalidate_mapping_pages(META_MAPPING(sbi),
1594 MAIN_BLKADDR(sbi), MAX_BLKADDR(sbi) - 1);
1596 f2fs_release_ino_entry(sbi, false);
1598 f2fs_reset_fsync_node_info(sbi);
1600 clear_sbi_flag(sbi, SBI_IS_DIRTY);
1601 clear_sbi_flag(sbi, SBI_NEED_CP);
1602 clear_sbi_flag(sbi, SBI_QUOTA_SKIP_FLUSH);
1604 spin_lock(&sbi->stat_lock);
1605 sbi->unusable_block_count = 0;
1606 spin_unlock(&sbi->stat_lock);
1608 __set_cp_next_pack(sbi);
1611 * redirty superblock if metadata like node page or inode cache is
1612 * updated during writing checkpoint.
1614 if (get_pages(sbi, F2FS_DIRTY_NODES) ||
1615 get_pages(sbi, F2FS_DIRTY_IMETA))
1616 set_sbi_flag(sbi, SBI_IS_DIRTY);
1618 f2fs_bug_on(sbi, get_pages(sbi, F2FS_DIRTY_DENTS));
1620 return unlikely(f2fs_cp_error(sbi)) ? -EIO : 0;
1623 int f2fs_write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
1625 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1626 unsigned long long ckpt_ver;
1629 if (f2fs_readonly(sbi->sb) || f2fs_hw_is_readonly(sbi))
1632 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
1633 if (cpc->reason != CP_PAUSE)
1635 f2fs_warn(sbi, "Start checkpoint disabled!");
1637 if (cpc->reason != CP_RESIZE)
1638 f2fs_down_write(&sbi->cp_global_sem);
1640 if (!is_sbi_flag_set(sbi, SBI_IS_DIRTY) &&
1641 ((cpc->reason & CP_FASTBOOT) || (cpc->reason & CP_SYNC) ||
1642 ((cpc->reason & CP_DISCARD) && !sbi->discard_blks)))
1644 if (unlikely(f2fs_cp_error(sbi))) {
1649 trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "start block_ops");
1651 err = block_operations(sbi);
1655 trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "finish block_ops");
1657 f2fs_flush_merged_writes(sbi);
1659 /* this is the case of multiple fstrims without any changes */
1660 if (cpc->reason & CP_DISCARD) {
1661 if (!f2fs_exist_trim_candidates(sbi, cpc)) {
1662 unblock_operations(sbi);
1666 if (NM_I(sbi)->nat_cnt[DIRTY_NAT] == 0 &&
1667 SIT_I(sbi)->dirty_sentries == 0 &&
1668 prefree_segments(sbi) == 0) {
1669 f2fs_flush_sit_entries(sbi, cpc);
1670 f2fs_clear_prefree_segments(sbi, cpc);
1671 unblock_operations(sbi);
1677 * update checkpoint pack index
1678 * Increase the version number so that
1679 * SIT entries and seg summaries are written at correct place
1681 ckpt_ver = cur_cp_version(ckpt);
1682 ckpt->checkpoint_ver = cpu_to_le64(++ckpt_ver);
1684 /* write cached NAT/SIT entries to NAT/SIT area */
1685 err = f2fs_flush_nat_entries(sbi, cpc);
1687 f2fs_err(sbi, "f2fs_flush_nat_entries failed err:%d, stop checkpoint", err);
1688 f2fs_bug_on(sbi, !f2fs_cp_error(sbi));
1692 f2fs_flush_sit_entries(sbi, cpc);
1694 /* save inmem log status */
1695 f2fs_save_inmem_curseg(sbi);
1697 err = do_checkpoint(sbi, cpc);
1699 f2fs_err(sbi, "do_checkpoint failed err:%d, stop checkpoint", err);
1700 f2fs_bug_on(sbi, !f2fs_cp_error(sbi));
1701 f2fs_release_discard_addrs(sbi);
1703 f2fs_clear_prefree_segments(sbi, cpc);
1706 f2fs_restore_inmem_curseg(sbi);
1708 unblock_operations(sbi);
1709 stat_inc_cp_count(sbi->stat_info);
1711 if (cpc->reason & CP_RECOVERY)
1712 f2fs_notice(sbi, "checkpoint: version = %llx", ckpt_ver);
1714 /* update CP_TIME to trigger checkpoint periodically */
1715 f2fs_update_time(sbi, CP_TIME);
1716 trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "finish checkpoint");
1718 if (cpc->reason != CP_RESIZE)
1719 f2fs_up_write(&sbi->cp_global_sem);
1723 void f2fs_init_ino_entry_info(struct f2fs_sb_info *sbi)
1727 for (i = 0; i < MAX_INO_ENTRY; i++) {
1728 struct inode_management *im = &sbi->im[i];
1730 INIT_RADIX_TREE(&im->ino_root, GFP_ATOMIC);
1731 spin_lock_init(&im->ino_lock);
1732 INIT_LIST_HEAD(&im->ino_list);
1736 sbi->max_orphans = (sbi->blocks_per_seg - F2FS_CP_PACKS -
1737 NR_CURSEG_PERSIST_TYPE - __cp_payload(sbi)) *
1738 F2FS_ORPHANS_PER_BLOCK;
1741 int __init f2fs_create_checkpoint_caches(void)
1743 ino_entry_slab = f2fs_kmem_cache_create("f2fs_ino_entry",
1744 sizeof(struct ino_entry));
1745 if (!ino_entry_slab)
1747 f2fs_inode_entry_slab = f2fs_kmem_cache_create("f2fs_inode_entry",
1748 sizeof(struct inode_entry));
1749 if (!f2fs_inode_entry_slab) {
1750 kmem_cache_destroy(ino_entry_slab);
1756 void f2fs_destroy_checkpoint_caches(void)
1758 kmem_cache_destroy(ino_entry_slab);
1759 kmem_cache_destroy(f2fs_inode_entry_slab);
1762 static int __write_checkpoint_sync(struct f2fs_sb_info *sbi)
1764 struct cp_control cpc = { .reason = CP_SYNC, };
1767 f2fs_down_write(&sbi->gc_lock);
1768 err = f2fs_write_checkpoint(sbi, &cpc);
1769 f2fs_up_write(&sbi->gc_lock);
1774 static void __checkpoint_and_complete_reqs(struct f2fs_sb_info *sbi)
1776 struct ckpt_req_control *cprc = &sbi->cprc_info;
1777 struct ckpt_req *req, *next;
1778 struct llist_node *dispatch_list;
1779 u64 sum_diff = 0, diff, count = 0;
1782 dispatch_list = llist_del_all(&cprc->issue_list);
1785 dispatch_list = llist_reverse_order(dispatch_list);
1787 ret = __write_checkpoint_sync(sbi);
1788 atomic_inc(&cprc->issued_ckpt);
1790 llist_for_each_entry_safe(req, next, dispatch_list, llnode) {
1791 diff = (u64)ktime_ms_delta(ktime_get(), req->queue_time);
1793 complete(&req->wait);
1798 atomic_sub(count, &cprc->queued_ckpt);
1799 atomic_add(count, &cprc->total_ckpt);
1801 spin_lock(&cprc->stat_lock);
1802 cprc->cur_time = (unsigned int)div64_u64(sum_diff, count);
1803 if (cprc->peak_time < cprc->cur_time)
1804 cprc->peak_time = cprc->cur_time;
1805 spin_unlock(&cprc->stat_lock);
1808 static int issue_checkpoint_thread(void *data)
1810 struct f2fs_sb_info *sbi = data;
1811 struct ckpt_req_control *cprc = &sbi->cprc_info;
1812 wait_queue_head_t *q = &cprc->ckpt_wait_queue;
1814 if (kthread_should_stop())
1817 if (!llist_empty(&cprc->issue_list))
1818 __checkpoint_and_complete_reqs(sbi);
1820 wait_event_interruptible(*q,
1821 kthread_should_stop() || !llist_empty(&cprc->issue_list));
1825 static void flush_remained_ckpt_reqs(struct f2fs_sb_info *sbi,
1826 struct ckpt_req *wait_req)
1828 struct ckpt_req_control *cprc = &sbi->cprc_info;
1830 if (!llist_empty(&cprc->issue_list)) {
1831 __checkpoint_and_complete_reqs(sbi);
1833 /* already dispatched by issue_checkpoint_thread */
1835 wait_for_completion(&wait_req->wait);
1839 static void init_ckpt_req(struct ckpt_req *req)
1841 memset(req, 0, sizeof(struct ckpt_req));
1843 init_completion(&req->wait);
1844 req->queue_time = ktime_get();
1847 int f2fs_issue_checkpoint(struct f2fs_sb_info *sbi)
1849 struct ckpt_req_control *cprc = &sbi->cprc_info;
1850 struct ckpt_req req;
1851 struct cp_control cpc;
1853 cpc.reason = __get_cp_reason(sbi);
1854 if (!test_opt(sbi, MERGE_CHECKPOINT) || cpc.reason != CP_SYNC) {
1857 f2fs_down_write(&sbi->gc_lock);
1858 ret = f2fs_write_checkpoint(sbi, &cpc);
1859 f2fs_up_write(&sbi->gc_lock);
1864 if (!cprc->f2fs_issue_ckpt)
1865 return __write_checkpoint_sync(sbi);
1867 init_ckpt_req(&req);
1869 llist_add(&req.llnode, &cprc->issue_list);
1870 atomic_inc(&cprc->queued_ckpt);
1873 * update issue_list before we wake up issue_checkpoint thread,
1874 * this smp_mb() pairs with another barrier in ___wait_event(),
1875 * see more details in comments of waitqueue_active().
1879 if (waitqueue_active(&cprc->ckpt_wait_queue))
1880 wake_up(&cprc->ckpt_wait_queue);
1882 if (cprc->f2fs_issue_ckpt)
1883 wait_for_completion(&req.wait);
1885 flush_remained_ckpt_reqs(sbi, &req);
1890 int f2fs_start_ckpt_thread(struct f2fs_sb_info *sbi)
1892 dev_t dev = sbi->sb->s_bdev->bd_dev;
1893 struct ckpt_req_control *cprc = &sbi->cprc_info;
1895 if (cprc->f2fs_issue_ckpt)
1898 cprc->f2fs_issue_ckpt = kthread_run(issue_checkpoint_thread, sbi,
1899 "f2fs_ckpt-%u:%u", MAJOR(dev), MINOR(dev));
1900 if (IS_ERR(cprc->f2fs_issue_ckpt)) {
1901 int err = PTR_ERR(cprc->f2fs_issue_ckpt);
1903 cprc->f2fs_issue_ckpt = NULL;
1907 set_task_ioprio(cprc->f2fs_issue_ckpt, cprc->ckpt_thread_ioprio);
1912 void f2fs_stop_ckpt_thread(struct f2fs_sb_info *sbi)
1914 struct ckpt_req_control *cprc = &sbi->cprc_info;
1915 struct task_struct *ckpt_task;
1917 if (!cprc->f2fs_issue_ckpt)
1920 ckpt_task = cprc->f2fs_issue_ckpt;
1921 cprc->f2fs_issue_ckpt = NULL;
1922 kthread_stop(ckpt_task);
1924 f2fs_flush_ckpt_thread(sbi);
1927 void f2fs_flush_ckpt_thread(struct f2fs_sb_info *sbi)
1929 struct ckpt_req_control *cprc = &sbi->cprc_info;
1931 flush_remained_ckpt_reqs(sbi, NULL);
1933 /* Let's wait for the previous dispatched checkpoint. */
1934 while (atomic_read(&cprc->queued_ckpt))
1935 io_schedule_timeout(DEFAULT_IO_TIMEOUT);
1938 void f2fs_init_ckpt_req_control(struct f2fs_sb_info *sbi)
1940 struct ckpt_req_control *cprc = &sbi->cprc_info;
1942 atomic_set(&cprc->issued_ckpt, 0);
1943 atomic_set(&cprc->total_ckpt, 0);
1944 atomic_set(&cprc->queued_ckpt, 0);
1945 cprc->ckpt_thread_ioprio = DEFAULT_CHECKPOINT_IOPRIO;
1946 init_waitqueue_head(&cprc->ckpt_wait_queue);
1947 init_llist_head(&cprc->issue_list);
1948 spin_lock_init(&cprc->stat_lock);