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);
34 f2fs_flush_merged_writes(sbi);
35 f2fs_handle_critical_error(sbi, reason, end_io);
39 * We guarantee no failure on the returned page.
41 struct page *f2fs_grab_meta_page(struct f2fs_sb_info *sbi, pgoff_t index)
43 struct address_space *mapping = META_MAPPING(sbi);
46 page = f2fs_grab_cache_page(mapping, index, false);
51 f2fs_wait_on_page_writeback(page, META, true, true);
52 if (!PageUptodate(page))
53 SetPageUptodate(page);
57 static struct page *__get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index,
60 struct address_space *mapping = META_MAPPING(sbi);
62 struct f2fs_io_info fio = {
66 .op_flags = REQ_META | REQ_PRIO,
69 .encrypted_page = NULL,
70 .is_por = !is_meta ? 1 : 0,
74 if (unlikely(!is_meta))
75 fio.op_flags &= ~REQ_META;
77 page = f2fs_grab_cache_page(mapping, index, false);
82 if (PageUptodate(page))
87 err = f2fs_submit_page_bio(&fio);
89 f2fs_put_page(page, 1);
93 f2fs_update_iostat(sbi, NULL, FS_META_READ_IO, F2FS_BLKSIZE);
96 if (unlikely(page->mapping != mapping)) {
97 f2fs_put_page(page, 1);
101 if (unlikely(!PageUptodate(page))) {
102 f2fs_handle_page_eio(sbi, page->index, META);
103 f2fs_put_page(page, 1);
104 return ERR_PTR(-EIO);
110 struct page *f2fs_get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index)
112 return __get_meta_page(sbi, index, true);
115 struct page *f2fs_get_meta_page_retry(struct f2fs_sb_info *sbi, pgoff_t index)
121 page = __get_meta_page(sbi, index, true);
123 if (PTR_ERR(page) == -EIO &&
124 ++count <= DEFAULT_RETRY_IO_COUNT)
126 f2fs_stop_checkpoint(sbi, false, STOP_CP_REASON_META_PAGE);
132 struct page *f2fs_get_tmp_page(struct f2fs_sb_info *sbi, pgoff_t index)
134 return __get_meta_page(sbi, index, false);
137 static bool __is_bitmap_valid(struct f2fs_sb_info *sbi, block_t blkaddr,
140 struct seg_entry *se;
141 unsigned int segno, offset;
144 if (type == DATA_GENERIC)
147 segno = GET_SEGNO(sbi, blkaddr);
148 offset = GET_BLKOFF_FROM_SEG0(sbi, blkaddr);
149 se = get_seg_entry(sbi, segno);
151 exist = f2fs_test_bit(offset, se->cur_valid_map);
153 /* skip data, if we already have an error in checkpoint. */
154 if (unlikely(f2fs_cp_error(sbi)))
157 if ((exist && type == DATA_GENERIC_ENHANCE_UPDATE) ||
158 (!exist && type == DATA_GENERIC_ENHANCE))
160 if (!exist && type != DATA_GENERIC_ENHANCE_UPDATE)
165 f2fs_err(sbi, "Inconsistent error blkaddr:%u, sit bitmap:%d",
167 set_sbi_flag(sbi, SBI_NEED_FSCK);
170 f2fs_handle_error(sbi, ERROR_INVALID_BLKADDR);
174 static bool __f2fs_is_valid_blkaddr(struct f2fs_sb_info *sbi,
175 block_t blkaddr, int type)
181 if (unlikely(blkaddr >= SIT_BLK_CNT(sbi)))
185 if (unlikely(blkaddr >= MAIN_BLKADDR(sbi) ||
186 blkaddr < SM_I(sbi)->ssa_blkaddr))
190 if (unlikely(blkaddr >= SIT_I(sbi)->sit_base_addr ||
191 blkaddr < __start_cp_addr(sbi)))
195 if (unlikely(blkaddr >= MAX_BLKADDR(sbi) ||
196 blkaddr < MAIN_BLKADDR(sbi)))
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))) {
206 /* Skip to emit an error message. */
207 if (unlikely(f2fs_cp_error(sbi)))
210 f2fs_warn(sbi, "access invalid blkaddr:%u",
212 set_sbi_flag(sbi, SBI_NEED_FSCK);
216 return __is_bitmap_valid(sbi, blkaddr, type);
220 if (unlikely(blkaddr < SEG0_BLKADDR(sbi) ||
221 blkaddr >= MAIN_BLKADDR(sbi)))
230 f2fs_handle_error(sbi, ERROR_INVALID_BLKADDR);
234 bool f2fs_is_valid_blkaddr(struct f2fs_sb_info *sbi,
235 block_t blkaddr, int type)
237 if (time_to_inject(sbi, FAULT_BLKADDR_VALIDITY))
239 return __f2fs_is_valid_blkaddr(sbi, blkaddr, type);
242 bool f2fs_is_valid_blkaddr_raw(struct f2fs_sb_info *sbi,
243 block_t blkaddr, int type)
245 return __f2fs_is_valid_blkaddr(sbi, blkaddr, type);
249 * Readahead CP/NAT/SIT/SSA/POR pages
251 int f2fs_ra_meta_pages(struct f2fs_sb_info *sbi, block_t start, int nrpages,
255 block_t blkno = start;
256 struct f2fs_io_info fio = {
260 .op_flags = sync ? (REQ_META | REQ_PRIO) : REQ_RAHEAD,
261 .encrypted_page = NULL,
263 .is_por = (type == META_POR) ? 1 : 0,
265 struct blk_plug plug;
268 if (unlikely(type == META_POR))
269 fio.op_flags &= ~REQ_META;
271 blk_start_plug(&plug);
272 for (; nrpages-- > 0; blkno++) {
274 if (!f2fs_is_valid_blkaddr(sbi, blkno, type))
279 if (unlikely(blkno >=
280 NAT_BLOCK_OFFSET(NM_I(sbi)->max_nid)))
282 /* get nat block addr */
283 fio.new_blkaddr = current_nat_addr(sbi,
284 blkno * NAT_ENTRY_PER_BLOCK);
287 if (unlikely(blkno >= TOTAL_SEGS(sbi)))
289 /* get sit block addr */
290 fio.new_blkaddr = current_sit_addr(sbi,
291 blkno * SIT_ENTRY_PER_BLOCK);
296 fio.new_blkaddr = blkno;
302 page = f2fs_grab_cache_page(META_MAPPING(sbi),
303 fio.new_blkaddr, false);
306 if (PageUptodate(page)) {
307 f2fs_put_page(page, 1);
312 err = f2fs_submit_page_bio(&fio);
313 f2fs_put_page(page, err ? 1 : 0);
316 f2fs_update_iostat(sbi, NULL, FS_META_READ_IO,
320 blk_finish_plug(&plug);
321 return blkno - start;
324 void f2fs_ra_meta_pages_cond(struct f2fs_sb_info *sbi, pgoff_t index,
325 unsigned int ra_blocks)
328 bool readahead = false;
330 if (ra_blocks == RECOVERY_MIN_RA_BLOCKS)
333 page = find_get_page(META_MAPPING(sbi), index);
334 if (!page || !PageUptodate(page))
336 f2fs_put_page(page, 0);
339 f2fs_ra_meta_pages(sbi, index, ra_blocks, META_POR, true);
342 static int __f2fs_write_meta_page(struct page *page,
343 struct writeback_control *wbc,
344 enum iostat_type io_type)
346 struct f2fs_sb_info *sbi = F2FS_P_SB(page);
348 trace_f2fs_writepage(page, META);
350 if (unlikely(f2fs_cp_error(sbi))) {
351 if (is_sbi_flag_set(sbi, SBI_IS_CLOSE)) {
352 ClearPageUptodate(page);
353 dec_page_count(sbi, F2FS_DIRTY_META);
359 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
361 if (wbc->for_reclaim && page->index < GET_SUM_BLOCK(sbi, 0))
364 f2fs_do_write_meta_page(sbi, page, io_type);
365 dec_page_count(sbi, F2FS_DIRTY_META);
367 if (wbc->for_reclaim)
368 f2fs_submit_merged_write_cond(sbi, NULL, page, 0, META);
372 if (unlikely(f2fs_cp_error(sbi)))
373 f2fs_submit_merged_write(sbi, META);
378 redirty_page_for_writepage(wbc, page);
379 return AOP_WRITEPAGE_ACTIVATE;
382 static int f2fs_write_meta_page(struct page *page,
383 struct writeback_control *wbc)
385 return __f2fs_write_meta_page(page, wbc, FS_META_IO);
388 static int f2fs_write_meta_pages(struct address_space *mapping,
389 struct writeback_control *wbc)
391 struct f2fs_sb_info *sbi = F2FS_M_SB(mapping);
394 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
397 /* collect a number of dirty meta pages and write together */
398 if (wbc->sync_mode != WB_SYNC_ALL &&
399 get_pages(sbi, F2FS_DIRTY_META) <
400 nr_pages_to_skip(sbi, META))
403 /* if locked failed, cp will flush dirty pages instead */
404 if (!f2fs_down_write_trylock(&sbi->cp_global_sem))
407 trace_f2fs_writepages(mapping->host, wbc, META);
408 diff = nr_pages_to_write(sbi, META, wbc);
409 written = f2fs_sync_meta_pages(sbi, META, wbc->nr_to_write, FS_META_IO);
410 f2fs_up_write(&sbi->cp_global_sem);
411 wbc->nr_to_write = max((long)0, wbc->nr_to_write - written - diff);
415 wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_META);
416 trace_f2fs_writepages(mapping->host, wbc, META);
420 long f2fs_sync_meta_pages(struct f2fs_sb_info *sbi, enum page_type type,
421 long nr_to_write, enum iostat_type io_type)
423 struct address_space *mapping = META_MAPPING(sbi);
424 pgoff_t index = 0, prev = ULONG_MAX;
425 struct folio_batch fbatch;
428 struct writeback_control wbc = {
431 struct blk_plug plug;
433 folio_batch_init(&fbatch);
435 blk_start_plug(&plug);
437 while ((nr_folios = filemap_get_folios_tag(mapping, &index,
439 PAGECACHE_TAG_DIRTY, &fbatch))) {
442 for (i = 0; i < nr_folios; i++) {
443 struct folio *folio = fbatch.folios[i];
445 if (nr_to_write != LONG_MAX && i != 0 &&
446 folio->index != prev +
447 folio_nr_pages(fbatch.folios[i-1])) {
448 folio_batch_release(&fbatch);
454 if (unlikely(folio->mapping != mapping)) {
459 if (!folio_test_dirty(folio)) {
460 /* someone wrote it for us */
461 goto continue_unlock;
464 f2fs_wait_on_page_writeback(&folio->page, META,
467 if (!folio_clear_dirty_for_io(folio))
468 goto continue_unlock;
470 if (__f2fs_write_meta_page(&folio->page, &wbc,
475 nwritten += folio_nr_pages(folio);
477 if (unlikely(nwritten >= nr_to_write))
480 folio_batch_release(&fbatch);
485 f2fs_submit_merged_write(sbi, type);
487 blk_finish_plug(&plug);
492 static bool f2fs_dirty_meta_folio(struct address_space *mapping,
495 trace_f2fs_set_page_dirty(&folio->page, META);
497 if (!folio_test_uptodate(folio))
498 folio_mark_uptodate(folio);
499 if (filemap_dirty_folio(mapping, folio)) {
500 inc_page_count(F2FS_M_SB(mapping), F2FS_DIRTY_META);
501 set_page_private_reference(&folio->page);
507 const struct address_space_operations f2fs_meta_aops = {
508 .writepage = f2fs_write_meta_page,
509 .writepages = f2fs_write_meta_pages,
510 .dirty_folio = f2fs_dirty_meta_folio,
511 .invalidate_folio = f2fs_invalidate_folio,
512 .release_folio = f2fs_release_folio,
513 .migrate_folio = filemap_migrate_folio,
516 static void __add_ino_entry(struct f2fs_sb_info *sbi, nid_t ino,
517 unsigned int devidx, int type)
519 struct inode_management *im = &sbi->im[type];
520 struct ino_entry *e = NULL, *new = NULL;
522 if (type == FLUSH_INO) {
524 e = radix_tree_lookup(&im->ino_root, ino);
530 new = f2fs_kmem_cache_alloc(ino_entry_slab,
531 GFP_NOFS, true, NULL);
533 radix_tree_preload(GFP_NOFS | __GFP_NOFAIL);
535 spin_lock(&im->ino_lock);
536 e = radix_tree_lookup(&im->ino_root, ino);
539 spin_unlock(&im->ino_lock);
540 radix_tree_preload_end();
544 if (unlikely(radix_tree_insert(&im->ino_root, ino, e)))
547 memset(e, 0, sizeof(struct ino_entry));
550 list_add_tail(&e->list, &im->ino_list);
551 if (type != ORPHAN_INO)
555 if (type == FLUSH_INO)
556 f2fs_set_bit(devidx, (char *)&e->dirty_device);
558 spin_unlock(&im->ino_lock);
559 radix_tree_preload_end();
562 kmem_cache_free(ino_entry_slab, new);
565 static void __remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type)
567 struct inode_management *im = &sbi->im[type];
570 spin_lock(&im->ino_lock);
571 e = radix_tree_lookup(&im->ino_root, ino);
574 radix_tree_delete(&im->ino_root, ino);
576 spin_unlock(&im->ino_lock);
577 kmem_cache_free(ino_entry_slab, e);
580 spin_unlock(&im->ino_lock);
583 void f2fs_add_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type)
585 /* add new dirty ino entry into list */
586 __add_ino_entry(sbi, ino, 0, type);
589 void f2fs_remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type)
591 /* remove dirty ino entry from list */
592 __remove_ino_entry(sbi, ino, type);
595 /* mode should be APPEND_INO, UPDATE_INO or TRANS_DIR_INO */
596 bool f2fs_exist_written_data(struct f2fs_sb_info *sbi, nid_t ino, int mode)
598 struct inode_management *im = &sbi->im[mode];
601 spin_lock(&im->ino_lock);
602 e = radix_tree_lookup(&im->ino_root, ino);
603 spin_unlock(&im->ino_lock);
604 return e ? true : false;
607 void f2fs_release_ino_entry(struct f2fs_sb_info *sbi, bool all)
609 struct ino_entry *e, *tmp;
612 for (i = all ? ORPHAN_INO : APPEND_INO; i < MAX_INO_ENTRY; i++) {
613 struct inode_management *im = &sbi->im[i];
615 spin_lock(&im->ino_lock);
616 list_for_each_entry_safe(e, tmp, &im->ino_list, list) {
618 radix_tree_delete(&im->ino_root, e->ino);
619 kmem_cache_free(ino_entry_slab, e);
622 spin_unlock(&im->ino_lock);
626 void f2fs_set_dirty_device(struct f2fs_sb_info *sbi, nid_t ino,
627 unsigned int devidx, int type)
629 __add_ino_entry(sbi, ino, devidx, type);
632 bool f2fs_is_dirty_device(struct f2fs_sb_info *sbi, nid_t ino,
633 unsigned int devidx, int type)
635 struct inode_management *im = &sbi->im[type];
637 bool is_dirty = false;
639 spin_lock(&im->ino_lock);
640 e = radix_tree_lookup(&im->ino_root, ino);
641 if (e && f2fs_test_bit(devidx, (char *)&e->dirty_device))
643 spin_unlock(&im->ino_lock);
647 int f2fs_acquire_orphan_inode(struct f2fs_sb_info *sbi)
649 struct inode_management *im = &sbi->im[ORPHAN_INO];
652 spin_lock(&im->ino_lock);
654 if (time_to_inject(sbi, FAULT_ORPHAN)) {
655 spin_unlock(&im->ino_lock);
659 if (unlikely(im->ino_num >= sbi->max_orphans))
663 spin_unlock(&im->ino_lock);
668 void f2fs_release_orphan_inode(struct f2fs_sb_info *sbi)
670 struct inode_management *im = &sbi->im[ORPHAN_INO];
672 spin_lock(&im->ino_lock);
673 f2fs_bug_on(sbi, im->ino_num == 0);
675 spin_unlock(&im->ino_lock);
678 void f2fs_add_orphan_inode(struct inode *inode)
680 /* add new orphan ino entry into list */
681 __add_ino_entry(F2FS_I_SB(inode), inode->i_ino, 0, ORPHAN_INO);
682 f2fs_update_inode_page(inode);
685 void f2fs_remove_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino)
687 /* remove orphan entry from orphan list */
688 __remove_ino_entry(sbi, ino, ORPHAN_INO);
691 static int recover_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino)
697 inode = f2fs_iget_retry(sbi->sb, ino);
700 * there should be a bug that we can't find the entry
703 f2fs_bug_on(sbi, PTR_ERR(inode) == -ENOENT);
704 return PTR_ERR(inode);
707 err = f2fs_dquot_initialize(inode);
715 /* truncate all the data during iput */
718 err = f2fs_get_node_info(sbi, ino, &ni, false);
722 /* ENOMEM was fully retried in f2fs_evict_inode. */
723 if (ni.blk_addr != NULL_ADDR) {
730 set_sbi_flag(sbi, SBI_NEED_FSCK);
731 f2fs_warn(sbi, "%s: orphan failed (ino=%x), run fsck to fix.",
736 int f2fs_recover_orphan_inodes(struct f2fs_sb_info *sbi)
738 block_t start_blk, orphan_blocks, i, j;
741 if (!is_set_ckpt_flags(sbi, CP_ORPHAN_PRESENT_FLAG))
744 if (f2fs_hw_is_readonly(sbi)) {
745 f2fs_info(sbi, "write access unavailable, skipping orphan cleanup");
749 if (is_sbi_flag_set(sbi, SBI_IS_WRITABLE))
750 f2fs_info(sbi, "orphan cleanup on readonly fs");
752 start_blk = __start_cp_addr(sbi) + 1 + __cp_payload(sbi);
753 orphan_blocks = __start_sum_addr(sbi) - 1 - __cp_payload(sbi);
755 f2fs_ra_meta_pages(sbi, start_blk, orphan_blocks, META_CP, true);
757 for (i = 0; i < orphan_blocks; i++) {
759 struct f2fs_orphan_block *orphan_blk;
761 page = f2fs_get_meta_page(sbi, start_blk + i);
767 orphan_blk = (struct f2fs_orphan_block *)page_address(page);
768 for (j = 0; j < le32_to_cpu(orphan_blk->entry_count); j++) {
769 nid_t ino = le32_to_cpu(orphan_blk->ino[j]);
771 err = recover_orphan_inode(sbi, ino);
773 f2fs_put_page(page, 1);
777 f2fs_put_page(page, 1);
779 /* clear Orphan Flag */
780 clear_ckpt_flags(sbi, CP_ORPHAN_PRESENT_FLAG);
782 set_sbi_flag(sbi, SBI_IS_RECOVERED);
787 static void write_orphan_inodes(struct f2fs_sb_info *sbi, block_t start_blk)
789 struct list_head *head;
790 struct f2fs_orphan_block *orphan_blk = NULL;
791 unsigned int nentries = 0;
792 unsigned short index = 1;
793 unsigned short orphan_blocks;
794 struct page *page = NULL;
795 struct ino_entry *orphan = NULL;
796 struct inode_management *im = &sbi->im[ORPHAN_INO];
798 orphan_blocks = GET_ORPHAN_BLOCKS(im->ino_num);
801 * we don't need to do spin_lock(&im->ino_lock) here, since all the
802 * orphan inode operations are covered under f2fs_lock_op().
803 * And, spin_lock should be avoided due to page operations below.
805 head = &im->ino_list;
807 /* loop for each orphan inode entry and write them in journal block */
808 list_for_each_entry(orphan, head, list) {
810 page = f2fs_grab_meta_page(sbi, start_blk++);
812 (struct f2fs_orphan_block *)page_address(page);
813 memset(orphan_blk, 0, sizeof(*orphan_blk));
816 orphan_blk->ino[nentries++] = cpu_to_le32(orphan->ino);
818 if (nentries == F2FS_ORPHANS_PER_BLOCK) {
820 * an orphan block is full of 1020 entries,
821 * then we need to flush current orphan blocks
822 * and bring another one in memory
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);
836 orphan_blk->blk_addr = cpu_to_le16(index);
837 orphan_blk->blk_count = cpu_to_le16(orphan_blocks);
838 orphan_blk->entry_count = cpu_to_le32(nentries);
839 set_page_dirty(page);
840 f2fs_put_page(page, 1);
844 static __u32 f2fs_checkpoint_chksum(struct f2fs_sb_info *sbi,
845 struct f2fs_checkpoint *ckpt)
847 unsigned int chksum_ofs = le32_to_cpu(ckpt->checksum_offset);
850 chksum = f2fs_crc32(sbi, ckpt, chksum_ofs);
851 if (chksum_ofs < CP_CHKSUM_OFFSET) {
852 chksum_ofs += sizeof(chksum);
853 chksum = f2fs_chksum(sbi, chksum, (__u8 *)ckpt + chksum_ofs,
854 F2FS_BLKSIZE - chksum_ofs);
859 static int get_checkpoint_version(struct f2fs_sb_info *sbi, block_t cp_addr,
860 struct f2fs_checkpoint **cp_block, struct page **cp_page,
861 unsigned long long *version)
863 size_t crc_offset = 0;
866 *cp_page = f2fs_get_meta_page(sbi, cp_addr);
867 if (IS_ERR(*cp_page))
868 return PTR_ERR(*cp_page);
870 *cp_block = (struct f2fs_checkpoint *)page_address(*cp_page);
872 crc_offset = le32_to_cpu((*cp_block)->checksum_offset);
873 if (crc_offset < CP_MIN_CHKSUM_OFFSET ||
874 crc_offset > CP_CHKSUM_OFFSET) {
875 f2fs_put_page(*cp_page, 1);
876 f2fs_warn(sbi, "invalid crc_offset: %zu", crc_offset);
880 crc = f2fs_checkpoint_chksum(sbi, *cp_block);
881 if (crc != cur_cp_crc(*cp_block)) {
882 f2fs_put_page(*cp_page, 1);
883 f2fs_warn(sbi, "invalid crc value");
887 *version = cur_cp_version(*cp_block);
891 static struct page *validate_checkpoint(struct f2fs_sb_info *sbi,
892 block_t cp_addr, unsigned long long *version)
894 struct page *cp_page_1 = NULL, *cp_page_2 = NULL;
895 struct f2fs_checkpoint *cp_block = NULL;
896 unsigned long long cur_version = 0, pre_version = 0;
897 unsigned int cp_blocks;
900 err = get_checkpoint_version(sbi, cp_addr, &cp_block,
901 &cp_page_1, version);
905 cp_blocks = le32_to_cpu(cp_block->cp_pack_total_block_count);
907 if (cp_blocks > BLKS_PER_SEG(sbi) || cp_blocks <= F2FS_CP_PACKS) {
908 f2fs_warn(sbi, "invalid cp_pack_total_block_count:%u",
909 le32_to_cpu(cp_block->cp_pack_total_block_count));
912 pre_version = *version;
914 cp_addr += cp_blocks - 1;
915 err = get_checkpoint_version(sbi, cp_addr, &cp_block,
916 &cp_page_2, version);
919 cur_version = *version;
921 if (cur_version == pre_version) {
922 *version = cur_version;
923 f2fs_put_page(cp_page_2, 1);
926 f2fs_put_page(cp_page_2, 1);
928 f2fs_put_page(cp_page_1, 1);
932 int f2fs_get_valid_checkpoint(struct f2fs_sb_info *sbi)
934 struct f2fs_checkpoint *cp_block;
935 struct f2fs_super_block *fsb = sbi->raw_super;
936 struct page *cp1, *cp2, *cur_page;
937 unsigned long blk_size = sbi->blocksize;
938 unsigned long long cp1_version = 0, cp2_version = 0;
939 unsigned long long cp_start_blk_no;
940 unsigned int cp_blks = 1 + __cp_payload(sbi);
945 sbi->ckpt = f2fs_kvzalloc(sbi, array_size(blk_size, cp_blks),
950 * Finding out valid cp block involves read both
951 * sets( cp pack 1 and cp pack 2)
953 cp_start_blk_no = le32_to_cpu(fsb->cp_blkaddr);
954 cp1 = validate_checkpoint(sbi, cp_start_blk_no, &cp1_version);
956 /* The second checkpoint pack should start at the next segment */
957 cp_start_blk_no += ((unsigned long long)1) <<
958 le32_to_cpu(fsb->log_blocks_per_seg);
959 cp2 = validate_checkpoint(sbi, cp_start_blk_no, &cp2_version);
962 if (ver_after(cp2_version, cp1_version))
975 cp_block = (struct f2fs_checkpoint *)page_address(cur_page);
976 memcpy(sbi->ckpt, cp_block, blk_size);
979 sbi->cur_cp_pack = 1;
981 sbi->cur_cp_pack = 2;
983 /* Sanity checking of checkpoint */
984 if (f2fs_sanity_check_ckpt(sbi)) {
986 goto free_fail_no_cp;
992 cp_blk_no = le32_to_cpu(fsb->cp_blkaddr);
994 cp_blk_no += BIT(le32_to_cpu(fsb->log_blocks_per_seg));
996 for (i = 1; i < cp_blks; i++) {
997 void *sit_bitmap_ptr;
998 unsigned char *ckpt = (unsigned char *)sbi->ckpt;
1000 cur_page = f2fs_get_meta_page(sbi, cp_blk_no + i);
1001 if (IS_ERR(cur_page)) {
1002 err = PTR_ERR(cur_page);
1003 goto free_fail_no_cp;
1005 sit_bitmap_ptr = page_address(cur_page);
1006 memcpy(ckpt + i * blk_size, sit_bitmap_ptr, blk_size);
1007 f2fs_put_page(cur_page, 1);
1010 f2fs_put_page(cp1, 1);
1011 f2fs_put_page(cp2, 1);
1015 f2fs_put_page(cp1, 1);
1016 f2fs_put_page(cp2, 1);
1022 static void __add_dirty_inode(struct inode *inode, enum inode_type type)
1024 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1025 int flag = (type == DIR_INODE) ? FI_DIRTY_DIR : FI_DIRTY_FILE;
1027 if (is_inode_flag_set(inode, flag))
1030 set_inode_flag(inode, flag);
1031 list_add_tail(&F2FS_I(inode)->dirty_list, &sbi->inode_list[type]);
1032 stat_inc_dirty_inode(sbi, type);
1035 static void __remove_dirty_inode(struct inode *inode, enum inode_type type)
1037 int flag = (type == DIR_INODE) ? FI_DIRTY_DIR : FI_DIRTY_FILE;
1039 if (get_dirty_pages(inode) || !is_inode_flag_set(inode, flag))
1042 list_del_init(&F2FS_I(inode)->dirty_list);
1043 clear_inode_flag(inode, flag);
1044 stat_dec_dirty_inode(F2FS_I_SB(inode), type);
1047 void f2fs_update_dirty_folio(struct inode *inode, struct folio *folio)
1049 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1050 enum inode_type type = S_ISDIR(inode->i_mode) ? DIR_INODE : FILE_INODE;
1052 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&
1053 !S_ISLNK(inode->i_mode))
1056 spin_lock(&sbi->inode_lock[type]);
1057 if (type != FILE_INODE || test_opt(sbi, DATA_FLUSH))
1058 __add_dirty_inode(inode, type);
1059 inode_inc_dirty_pages(inode);
1060 spin_unlock(&sbi->inode_lock[type]);
1062 set_page_private_reference(&folio->page);
1065 void f2fs_remove_dirty_inode(struct inode *inode)
1067 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1068 enum inode_type type = S_ISDIR(inode->i_mode) ? DIR_INODE : FILE_INODE;
1070 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&
1071 !S_ISLNK(inode->i_mode))
1074 if (type == FILE_INODE && !test_opt(sbi, DATA_FLUSH))
1077 spin_lock(&sbi->inode_lock[type]);
1078 __remove_dirty_inode(inode, type);
1079 spin_unlock(&sbi->inode_lock[type]);
1082 int f2fs_sync_dirty_inodes(struct f2fs_sb_info *sbi, enum inode_type type,
1085 struct list_head *head;
1086 struct inode *inode;
1087 struct f2fs_inode_info *fi;
1088 bool is_dir = (type == DIR_INODE);
1089 unsigned long ino = 0;
1091 trace_f2fs_sync_dirty_inodes_enter(sbi->sb, is_dir,
1092 get_pages(sbi, is_dir ?
1093 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA));
1095 if (unlikely(f2fs_cp_error(sbi))) {
1096 trace_f2fs_sync_dirty_inodes_exit(sbi->sb, is_dir,
1097 get_pages(sbi, is_dir ?
1098 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA));
1102 spin_lock(&sbi->inode_lock[type]);
1104 head = &sbi->inode_list[type];
1105 if (list_empty(head)) {
1106 spin_unlock(&sbi->inode_lock[type]);
1107 trace_f2fs_sync_dirty_inodes_exit(sbi->sb, is_dir,
1108 get_pages(sbi, is_dir ?
1109 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA));
1112 fi = list_first_entry(head, struct f2fs_inode_info, dirty_list);
1113 inode = igrab(&fi->vfs_inode);
1114 spin_unlock(&sbi->inode_lock[type]);
1116 unsigned long cur_ino = inode->i_ino;
1119 F2FS_I(inode)->cp_task = current;
1120 F2FS_I(inode)->wb_task = current;
1122 filemap_fdatawrite(inode->i_mapping);
1124 F2FS_I(inode)->wb_task = NULL;
1126 F2FS_I(inode)->cp_task = NULL;
1129 /* We need to give cpu to another writers. */
1136 * We should submit bio, since it exists several
1137 * writebacking dentry pages in the freeing inode.
1139 f2fs_submit_merged_write(sbi, DATA);
1145 static int f2fs_sync_inode_meta(struct f2fs_sb_info *sbi)
1147 struct list_head *head = &sbi->inode_list[DIRTY_META];
1148 struct inode *inode;
1149 struct f2fs_inode_info *fi;
1150 s64 total = get_pages(sbi, F2FS_DIRTY_IMETA);
1153 if (unlikely(f2fs_cp_error(sbi)))
1156 spin_lock(&sbi->inode_lock[DIRTY_META]);
1157 if (list_empty(head)) {
1158 spin_unlock(&sbi->inode_lock[DIRTY_META]);
1161 fi = list_first_entry(head, struct f2fs_inode_info,
1163 inode = igrab(&fi->vfs_inode);
1164 spin_unlock(&sbi->inode_lock[DIRTY_META]);
1166 sync_inode_metadata(inode, 0);
1168 /* it's on eviction */
1169 if (is_inode_flag_set(inode, FI_DIRTY_INODE))
1170 f2fs_update_inode_page(inode);
1177 static void __prepare_cp_block(struct f2fs_sb_info *sbi)
1179 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1180 struct f2fs_nm_info *nm_i = NM_I(sbi);
1181 nid_t last_nid = nm_i->next_scan_nid;
1183 next_free_nid(sbi, &last_nid);
1184 ckpt->valid_block_count = cpu_to_le64(valid_user_blocks(sbi));
1185 ckpt->valid_node_count = cpu_to_le32(valid_node_count(sbi));
1186 ckpt->valid_inode_count = cpu_to_le32(valid_inode_count(sbi));
1187 ckpt->next_free_nid = cpu_to_le32(last_nid);
1190 static bool __need_flush_quota(struct f2fs_sb_info *sbi)
1194 if (!is_journalled_quota(sbi))
1197 if (!f2fs_down_write_trylock(&sbi->quota_sem))
1199 if (is_sbi_flag_set(sbi, SBI_QUOTA_SKIP_FLUSH)) {
1201 } else if (is_sbi_flag_set(sbi, SBI_QUOTA_NEED_REPAIR)) {
1203 } else if (is_sbi_flag_set(sbi, SBI_QUOTA_NEED_FLUSH)) {
1204 clear_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH);
1206 } else if (get_pages(sbi, F2FS_DIRTY_QDATA)) {
1209 f2fs_up_write(&sbi->quota_sem);
1214 * Freeze all the FS-operations for checkpoint.
1216 static int block_operations(struct f2fs_sb_info *sbi)
1218 struct writeback_control wbc = {
1219 .sync_mode = WB_SYNC_ALL,
1220 .nr_to_write = LONG_MAX,
1223 int err = 0, cnt = 0;
1226 * Let's flush inline_data in dirty node pages.
1228 f2fs_flush_inline_data(sbi);
1232 if (__need_flush_quota(sbi)) {
1235 if (++cnt > DEFAULT_RETRY_QUOTA_FLUSH_COUNT) {
1236 set_sbi_flag(sbi, SBI_QUOTA_SKIP_FLUSH);
1237 set_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH);
1238 goto retry_flush_dents;
1240 f2fs_unlock_all(sbi);
1242 /* only failed during mount/umount/freeze/quotactl */
1243 locked = down_read_trylock(&sbi->sb->s_umount);
1244 f2fs_quota_sync(sbi->sb, -1);
1246 up_read(&sbi->sb->s_umount);
1248 goto retry_flush_quotas;
1252 /* write all the dirty dentry pages */
1253 if (get_pages(sbi, F2FS_DIRTY_DENTS)) {
1254 f2fs_unlock_all(sbi);
1255 err = f2fs_sync_dirty_inodes(sbi, DIR_INODE, true);
1259 goto retry_flush_quotas;
1263 * POR: we should ensure that there are no dirty node pages
1264 * until finishing nat/sit flush. inode->i_blocks can be updated.
1266 f2fs_down_write(&sbi->node_change);
1268 if (get_pages(sbi, F2FS_DIRTY_IMETA)) {
1269 f2fs_up_write(&sbi->node_change);
1270 f2fs_unlock_all(sbi);
1271 err = f2fs_sync_inode_meta(sbi);
1275 goto retry_flush_quotas;
1279 f2fs_down_write(&sbi->node_write);
1281 if (get_pages(sbi, F2FS_DIRTY_NODES)) {
1282 f2fs_up_write(&sbi->node_write);
1283 atomic_inc(&sbi->wb_sync_req[NODE]);
1284 err = f2fs_sync_node_pages(sbi, &wbc, false, FS_CP_NODE_IO);
1285 atomic_dec(&sbi->wb_sync_req[NODE]);
1287 f2fs_up_write(&sbi->node_change);
1288 f2fs_unlock_all(sbi);
1292 goto retry_flush_nodes;
1296 * sbi->node_change is used only for AIO write_begin path which produces
1297 * dirty node blocks and some checkpoint values by block allocation.
1299 __prepare_cp_block(sbi);
1300 f2fs_up_write(&sbi->node_change);
1304 static void unblock_operations(struct f2fs_sb_info *sbi)
1306 f2fs_up_write(&sbi->node_write);
1307 f2fs_unlock_all(sbi);
1310 void f2fs_wait_on_all_pages(struct f2fs_sb_info *sbi, int type)
1315 if (!get_pages(sbi, type))
1318 if (unlikely(f2fs_cp_error(sbi) &&
1319 !is_sbi_flag_set(sbi, SBI_IS_CLOSE)))
1322 if (type == F2FS_DIRTY_META)
1323 f2fs_sync_meta_pages(sbi, META, LONG_MAX,
1325 else if (type == F2FS_WB_CP_DATA)
1326 f2fs_submit_merged_write(sbi, DATA);
1328 prepare_to_wait(&sbi->cp_wait, &wait, TASK_UNINTERRUPTIBLE);
1329 io_schedule_timeout(DEFAULT_IO_TIMEOUT);
1331 finish_wait(&sbi->cp_wait, &wait);
1334 static void update_ckpt_flags(struct f2fs_sb_info *sbi, struct cp_control *cpc)
1336 unsigned long orphan_num = sbi->im[ORPHAN_INO].ino_num;
1337 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1338 unsigned long flags;
1340 if (cpc->reason & CP_UMOUNT) {
1341 if (le32_to_cpu(ckpt->cp_pack_total_block_count) +
1342 NM_I(sbi)->nat_bits_blocks > BLKS_PER_SEG(sbi)) {
1343 clear_ckpt_flags(sbi, CP_NAT_BITS_FLAG);
1344 f2fs_notice(sbi, "Disable nat_bits due to no space");
1345 } else if (!is_set_ckpt_flags(sbi, CP_NAT_BITS_FLAG) &&
1346 f2fs_nat_bitmap_enabled(sbi)) {
1347 f2fs_enable_nat_bits(sbi);
1348 set_ckpt_flags(sbi, CP_NAT_BITS_FLAG);
1349 f2fs_notice(sbi, "Rebuild and enable nat_bits");
1353 spin_lock_irqsave(&sbi->cp_lock, flags);
1355 if (cpc->reason & CP_TRIMMED)
1356 __set_ckpt_flags(ckpt, CP_TRIMMED_FLAG);
1358 __clear_ckpt_flags(ckpt, CP_TRIMMED_FLAG);
1360 if (cpc->reason & CP_UMOUNT)
1361 __set_ckpt_flags(ckpt, CP_UMOUNT_FLAG);
1363 __clear_ckpt_flags(ckpt, CP_UMOUNT_FLAG);
1365 if (cpc->reason & CP_FASTBOOT)
1366 __set_ckpt_flags(ckpt, CP_FASTBOOT_FLAG);
1368 __clear_ckpt_flags(ckpt, CP_FASTBOOT_FLAG);
1371 __set_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG);
1373 __clear_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG);
1375 if (is_sbi_flag_set(sbi, SBI_NEED_FSCK))
1376 __set_ckpt_flags(ckpt, CP_FSCK_FLAG);
1378 if (is_sbi_flag_set(sbi, SBI_IS_RESIZEFS))
1379 __set_ckpt_flags(ckpt, CP_RESIZEFS_FLAG);
1381 __clear_ckpt_flags(ckpt, CP_RESIZEFS_FLAG);
1383 if (is_sbi_flag_set(sbi, SBI_CP_DISABLED))
1384 __set_ckpt_flags(ckpt, CP_DISABLED_FLAG);
1386 __clear_ckpt_flags(ckpt, CP_DISABLED_FLAG);
1388 if (is_sbi_flag_set(sbi, SBI_CP_DISABLED_QUICK))
1389 __set_ckpt_flags(ckpt, CP_DISABLED_QUICK_FLAG);
1391 __clear_ckpt_flags(ckpt, CP_DISABLED_QUICK_FLAG);
1393 if (is_sbi_flag_set(sbi, SBI_QUOTA_SKIP_FLUSH))
1394 __set_ckpt_flags(ckpt, CP_QUOTA_NEED_FSCK_FLAG);
1396 __clear_ckpt_flags(ckpt, CP_QUOTA_NEED_FSCK_FLAG);
1398 if (is_sbi_flag_set(sbi, SBI_QUOTA_NEED_REPAIR))
1399 __set_ckpt_flags(ckpt, CP_QUOTA_NEED_FSCK_FLAG);
1401 /* set this flag to activate crc|cp_ver for recovery */
1402 __set_ckpt_flags(ckpt, CP_CRC_RECOVERY_FLAG);
1403 __clear_ckpt_flags(ckpt, CP_NOCRC_RECOVERY_FLAG);
1405 spin_unlock_irqrestore(&sbi->cp_lock, flags);
1408 static void commit_checkpoint(struct f2fs_sb_info *sbi,
1409 void *src, block_t blk_addr)
1411 struct writeback_control wbc = {
1416 * filemap_get_folios_tag and lock_page again will take
1417 * some extra time. Therefore, f2fs_update_meta_pages and
1418 * f2fs_sync_meta_pages are combined in this function.
1420 struct page *page = f2fs_grab_meta_page(sbi, blk_addr);
1423 f2fs_wait_on_page_writeback(page, META, true, true);
1425 memcpy(page_address(page), src, PAGE_SIZE);
1427 set_page_dirty(page);
1428 if (unlikely(!clear_page_dirty_for_io(page)))
1429 f2fs_bug_on(sbi, 1);
1431 /* writeout cp pack 2 page */
1432 err = __f2fs_write_meta_page(page, &wbc, FS_CP_META_IO);
1433 if (unlikely(err && f2fs_cp_error(sbi))) {
1434 f2fs_put_page(page, 1);
1438 f2fs_bug_on(sbi, err);
1439 f2fs_put_page(page, 0);
1441 /* submit checkpoint (with barrier if NOBARRIER is not set) */
1442 f2fs_submit_merged_write(sbi, META_FLUSH);
1445 static inline u64 get_sectors_written(struct block_device *bdev)
1447 return (u64)part_stat_read(bdev, sectors[STAT_WRITE]);
1450 u64 f2fs_get_sectors_written(struct f2fs_sb_info *sbi)
1452 if (f2fs_is_multi_device(sbi)) {
1456 for (i = 0; i < sbi->s_ndevs; i++)
1457 sectors += get_sectors_written(FDEV(i).bdev);
1462 return get_sectors_written(sbi->sb->s_bdev);
1465 static int do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
1467 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1468 struct f2fs_nm_info *nm_i = NM_I(sbi);
1469 unsigned long orphan_num = sbi->im[ORPHAN_INO].ino_num, flags;
1471 unsigned int data_sum_blocks, orphan_blocks;
1474 int cp_payload_blks = __cp_payload(sbi);
1475 struct curseg_info *seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE);
1479 /* Flush all the NAT/SIT pages */
1480 f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_CP_META_IO);
1482 /* start to update checkpoint, cp ver is already updated previously */
1483 ckpt->elapsed_time = cpu_to_le64(get_mtime(sbi, true));
1484 ckpt->free_segment_count = cpu_to_le32(free_segments(sbi));
1485 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
1486 struct curseg_info *curseg = CURSEG_I(sbi, i + CURSEG_HOT_NODE);
1488 ckpt->cur_node_segno[i] = cpu_to_le32(curseg->segno);
1489 ckpt->cur_node_blkoff[i] = cpu_to_le16(curseg->next_blkoff);
1490 ckpt->alloc_type[i + CURSEG_HOT_NODE] = curseg->alloc_type;
1492 for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) {
1493 struct curseg_info *curseg = CURSEG_I(sbi, i + CURSEG_HOT_DATA);
1495 ckpt->cur_data_segno[i] = cpu_to_le32(curseg->segno);
1496 ckpt->cur_data_blkoff[i] = cpu_to_le16(curseg->next_blkoff);
1497 ckpt->alloc_type[i + CURSEG_HOT_DATA] = curseg->alloc_type;
1500 /* 2 cp + n data seg summary + orphan inode blocks */
1501 data_sum_blocks = f2fs_npages_for_summary_flush(sbi, false);
1502 spin_lock_irqsave(&sbi->cp_lock, flags);
1503 if (data_sum_blocks < NR_CURSEG_DATA_TYPE)
1504 __set_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG);
1506 __clear_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG);
1507 spin_unlock_irqrestore(&sbi->cp_lock, flags);
1509 orphan_blocks = GET_ORPHAN_BLOCKS(orphan_num);
1510 ckpt->cp_pack_start_sum = cpu_to_le32(1 + cp_payload_blks +
1513 if (__remain_node_summaries(cpc->reason))
1514 ckpt->cp_pack_total_block_count = cpu_to_le32(F2FS_CP_PACKS +
1515 cp_payload_blks + data_sum_blocks +
1516 orphan_blocks + NR_CURSEG_NODE_TYPE);
1518 ckpt->cp_pack_total_block_count = cpu_to_le32(F2FS_CP_PACKS +
1519 cp_payload_blks + data_sum_blocks +
1522 /* update ckpt flag for checkpoint */
1523 update_ckpt_flags(sbi, cpc);
1525 /* update SIT/NAT bitmap */
1526 get_sit_bitmap(sbi, __bitmap_ptr(sbi, SIT_BITMAP));
1527 get_nat_bitmap(sbi, __bitmap_ptr(sbi, NAT_BITMAP));
1529 crc32 = f2fs_checkpoint_chksum(sbi, ckpt);
1530 *((__le32 *)((unsigned char *)ckpt +
1531 le32_to_cpu(ckpt->checksum_offset)))
1532 = cpu_to_le32(crc32);
1534 start_blk = __start_cp_next_addr(sbi);
1536 /* write nat bits */
1537 if ((cpc->reason & CP_UMOUNT) &&
1538 is_set_ckpt_flags(sbi, CP_NAT_BITS_FLAG)) {
1539 __u64 cp_ver = cur_cp_version(ckpt);
1542 cp_ver |= ((__u64)crc32 << 32);
1543 *(__le64 *)nm_i->nat_bits = cpu_to_le64(cp_ver);
1545 blk = start_blk + BLKS_PER_SEG(sbi) - nm_i->nat_bits_blocks;
1546 for (i = 0; i < nm_i->nat_bits_blocks; i++)
1547 f2fs_update_meta_page(sbi, nm_i->nat_bits +
1548 (i << F2FS_BLKSIZE_BITS), blk + i);
1551 /* write out checkpoint buffer at block 0 */
1552 f2fs_update_meta_page(sbi, ckpt, start_blk++);
1554 for (i = 1; i < 1 + cp_payload_blks; i++)
1555 f2fs_update_meta_page(sbi, (char *)ckpt + i * F2FS_BLKSIZE,
1559 write_orphan_inodes(sbi, start_blk);
1560 start_blk += orphan_blocks;
1563 f2fs_write_data_summaries(sbi, start_blk);
1564 start_blk += data_sum_blocks;
1566 /* Record write statistics in the hot node summary */
1567 kbytes_written = sbi->kbytes_written;
1568 kbytes_written += (f2fs_get_sectors_written(sbi) -
1569 sbi->sectors_written_start) >> 1;
1570 seg_i->journal->info.kbytes_written = cpu_to_le64(kbytes_written);
1572 if (__remain_node_summaries(cpc->reason)) {
1573 f2fs_write_node_summaries(sbi, start_blk);
1574 start_blk += NR_CURSEG_NODE_TYPE;
1577 /* update user_block_counts */
1578 sbi->last_valid_block_count = sbi->total_valid_block_count;
1579 percpu_counter_set(&sbi->alloc_valid_block_count, 0);
1580 percpu_counter_set(&sbi->rf_node_block_count, 0);
1582 /* Here, we have one bio having CP pack except cp pack 2 page */
1583 f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_CP_META_IO);
1584 /* Wait for all dirty meta pages to be submitted for IO */
1585 f2fs_wait_on_all_pages(sbi, F2FS_DIRTY_META);
1587 /* wait for previous submitted meta pages writeback */
1588 f2fs_wait_on_all_pages(sbi, F2FS_WB_CP_DATA);
1590 /* flush all device cache */
1591 err = f2fs_flush_device_cache(sbi);
1595 /* barrier and flush checkpoint cp pack 2 page if it can */
1596 commit_checkpoint(sbi, ckpt, start_blk);
1597 f2fs_wait_on_all_pages(sbi, F2FS_WB_CP_DATA);
1600 * invalidate intermediate page cache borrowed from meta inode which are
1601 * used for migration of encrypted, verity or compressed inode's blocks.
1603 if (f2fs_sb_has_encrypt(sbi) || f2fs_sb_has_verity(sbi) ||
1604 f2fs_sb_has_compression(sbi))
1606 invalidate_inode_pages2_range(META_MAPPING(sbi),
1607 MAIN_BLKADDR(sbi), MAX_BLKADDR(sbi) - 1));
1609 f2fs_release_ino_entry(sbi, false);
1611 f2fs_reset_fsync_node_info(sbi);
1613 clear_sbi_flag(sbi, SBI_IS_DIRTY);
1614 clear_sbi_flag(sbi, SBI_NEED_CP);
1615 clear_sbi_flag(sbi, SBI_QUOTA_SKIP_FLUSH);
1617 spin_lock(&sbi->stat_lock);
1618 sbi->unusable_block_count = 0;
1619 spin_unlock(&sbi->stat_lock);
1621 __set_cp_next_pack(sbi);
1624 * redirty superblock if metadata like node page or inode cache is
1625 * updated during writing checkpoint.
1627 if (get_pages(sbi, F2FS_DIRTY_NODES) ||
1628 get_pages(sbi, F2FS_DIRTY_IMETA))
1629 set_sbi_flag(sbi, SBI_IS_DIRTY);
1631 f2fs_bug_on(sbi, get_pages(sbi, F2FS_DIRTY_DENTS));
1633 return unlikely(f2fs_cp_error(sbi)) ? -EIO : 0;
1636 int f2fs_write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
1638 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1639 unsigned long long ckpt_ver;
1642 if (f2fs_readonly(sbi->sb) || f2fs_hw_is_readonly(sbi))
1645 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
1646 if (cpc->reason != CP_PAUSE)
1648 f2fs_warn(sbi, "Start checkpoint disabled!");
1650 if (cpc->reason != CP_RESIZE)
1651 f2fs_down_write(&sbi->cp_global_sem);
1653 if (!is_sbi_flag_set(sbi, SBI_IS_DIRTY) &&
1654 ((cpc->reason & CP_FASTBOOT) || (cpc->reason & CP_SYNC) ||
1655 ((cpc->reason & CP_DISCARD) && !sbi->discard_blks)))
1657 if (unlikely(f2fs_cp_error(sbi))) {
1662 trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "start block_ops");
1664 err = block_operations(sbi);
1668 trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "finish block_ops");
1670 f2fs_flush_merged_writes(sbi);
1672 /* this is the case of multiple fstrims without any changes */
1673 if (cpc->reason & CP_DISCARD) {
1674 if (!f2fs_exist_trim_candidates(sbi, cpc)) {
1675 unblock_operations(sbi);
1679 if (NM_I(sbi)->nat_cnt[DIRTY_NAT] == 0 &&
1680 SIT_I(sbi)->dirty_sentries == 0 &&
1681 prefree_segments(sbi) == 0) {
1682 f2fs_flush_sit_entries(sbi, cpc);
1683 f2fs_clear_prefree_segments(sbi, cpc);
1684 unblock_operations(sbi);
1690 * update checkpoint pack index
1691 * Increase the version number so that
1692 * SIT entries and seg summaries are written at correct place
1694 ckpt_ver = cur_cp_version(ckpt);
1695 ckpt->checkpoint_ver = cpu_to_le64(++ckpt_ver);
1697 /* write cached NAT/SIT entries to NAT/SIT area */
1698 err = f2fs_flush_nat_entries(sbi, cpc);
1700 f2fs_err(sbi, "f2fs_flush_nat_entries failed err:%d, stop checkpoint", err);
1701 f2fs_bug_on(sbi, !f2fs_cp_error(sbi));
1705 f2fs_flush_sit_entries(sbi, cpc);
1707 /* save inmem log status */
1708 f2fs_save_inmem_curseg(sbi);
1710 err = do_checkpoint(sbi, cpc);
1712 f2fs_err(sbi, "do_checkpoint failed err:%d, stop checkpoint", err);
1713 f2fs_bug_on(sbi, !f2fs_cp_error(sbi));
1714 f2fs_release_discard_addrs(sbi);
1716 f2fs_clear_prefree_segments(sbi, cpc);
1719 f2fs_restore_inmem_curseg(sbi);
1720 stat_inc_cp_count(sbi);
1722 unblock_operations(sbi);
1724 if (cpc->reason & CP_RECOVERY)
1725 f2fs_notice(sbi, "checkpoint: version = %llx", ckpt_ver);
1727 /* update CP_TIME to trigger checkpoint periodically */
1728 f2fs_update_time(sbi, CP_TIME);
1729 trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "finish checkpoint");
1731 if (cpc->reason != CP_RESIZE)
1732 f2fs_up_write(&sbi->cp_global_sem);
1736 void f2fs_init_ino_entry_info(struct f2fs_sb_info *sbi)
1740 for (i = 0; i < MAX_INO_ENTRY; i++) {
1741 struct inode_management *im = &sbi->im[i];
1743 INIT_RADIX_TREE(&im->ino_root, GFP_ATOMIC);
1744 spin_lock_init(&im->ino_lock);
1745 INIT_LIST_HEAD(&im->ino_list);
1749 sbi->max_orphans = (BLKS_PER_SEG(sbi) - F2FS_CP_PACKS -
1750 NR_CURSEG_PERSIST_TYPE - __cp_payload(sbi)) *
1751 F2FS_ORPHANS_PER_BLOCK;
1754 int __init f2fs_create_checkpoint_caches(void)
1756 ino_entry_slab = f2fs_kmem_cache_create("f2fs_ino_entry",
1757 sizeof(struct ino_entry));
1758 if (!ino_entry_slab)
1760 f2fs_inode_entry_slab = f2fs_kmem_cache_create("f2fs_inode_entry",
1761 sizeof(struct inode_entry));
1762 if (!f2fs_inode_entry_slab) {
1763 kmem_cache_destroy(ino_entry_slab);
1769 void f2fs_destroy_checkpoint_caches(void)
1771 kmem_cache_destroy(ino_entry_slab);
1772 kmem_cache_destroy(f2fs_inode_entry_slab);
1775 static int __write_checkpoint_sync(struct f2fs_sb_info *sbi)
1777 struct cp_control cpc = { .reason = CP_SYNC, };
1780 f2fs_down_write(&sbi->gc_lock);
1781 err = f2fs_write_checkpoint(sbi, &cpc);
1782 f2fs_up_write(&sbi->gc_lock);
1787 static void __checkpoint_and_complete_reqs(struct f2fs_sb_info *sbi)
1789 struct ckpt_req_control *cprc = &sbi->cprc_info;
1790 struct ckpt_req *req, *next;
1791 struct llist_node *dispatch_list;
1792 u64 sum_diff = 0, diff, count = 0;
1795 dispatch_list = llist_del_all(&cprc->issue_list);
1798 dispatch_list = llist_reverse_order(dispatch_list);
1800 ret = __write_checkpoint_sync(sbi);
1801 atomic_inc(&cprc->issued_ckpt);
1803 llist_for_each_entry_safe(req, next, dispatch_list, llnode) {
1804 diff = (u64)ktime_ms_delta(ktime_get(), req->queue_time);
1806 complete(&req->wait);
1811 atomic_sub(count, &cprc->queued_ckpt);
1812 atomic_add(count, &cprc->total_ckpt);
1814 spin_lock(&cprc->stat_lock);
1815 cprc->cur_time = (unsigned int)div64_u64(sum_diff, count);
1816 if (cprc->peak_time < cprc->cur_time)
1817 cprc->peak_time = cprc->cur_time;
1818 spin_unlock(&cprc->stat_lock);
1821 static int issue_checkpoint_thread(void *data)
1823 struct f2fs_sb_info *sbi = data;
1824 struct ckpt_req_control *cprc = &sbi->cprc_info;
1825 wait_queue_head_t *q = &cprc->ckpt_wait_queue;
1827 if (kthread_should_stop())
1830 if (!llist_empty(&cprc->issue_list))
1831 __checkpoint_and_complete_reqs(sbi);
1833 wait_event_interruptible(*q,
1834 kthread_should_stop() || !llist_empty(&cprc->issue_list));
1838 static void flush_remained_ckpt_reqs(struct f2fs_sb_info *sbi,
1839 struct ckpt_req *wait_req)
1841 struct ckpt_req_control *cprc = &sbi->cprc_info;
1843 if (!llist_empty(&cprc->issue_list)) {
1844 __checkpoint_and_complete_reqs(sbi);
1846 /* already dispatched by issue_checkpoint_thread */
1848 wait_for_completion(&wait_req->wait);
1852 static void init_ckpt_req(struct ckpt_req *req)
1854 memset(req, 0, sizeof(struct ckpt_req));
1856 init_completion(&req->wait);
1857 req->queue_time = ktime_get();
1860 int f2fs_issue_checkpoint(struct f2fs_sb_info *sbi)
1862 struct ckpt_req_control *cprc = &sbi->cprc_info;
1863 struct ckpt_req req;
1864 struct cp_control cpc;
1866 cpc.reason = __get_cp_reason(sbi);
1867 if (!test_opt(sbi, MERGE_CHECKPOINT) || cpc.reason != CP_SYNC) {
1870 f2fs_down_write(&sbi->gc_lock);
1871 ret = f2fs_write_checkpoint(sbi, &cpc);
1872 f2fs_up_write(&sbi->gc_lock);
1877 if (!cprc->f2fs_issue_ckpt)
1878 return __write_checkpoint_sync(sbi);
1880 init_ckpt_req(&req);
1882 llist_add(&req.llnode, &cprc->issue_list);
1883 atomic_inc(&cprc->queued_ckpt);
1886 * update issue_list before we wake up issue_checkpoint thread,
1887 * this smp_mb() pairs with another barrier in ___wait_event(),
1888 * see more details in comments of waitqueue_active().
1892 if (waitqueue_active(&cprc->ckpt_wait_queue))
1893 wake_up(&cprc->ckpt_wait_queue);
1895 if (cprc->f2fs_issue_ckpt)
1896 wait_for_completion(&req.wait);
1898 flush_remained_ckpt_reqs(sbi, &req);
1903 int f2fs_start_ckpt_thread(struct f2fs_sb_info *sbi)
1905 dev_t dev = sbi->sb->s_bdev->bd_dev;
1906 struct ckpt_req_control *cprc = &sbi->cprc_info;
1908 if (cprc->f2fs_issue_ckpt)
1911 cprc->f2fs_issue_ckpt = kthread_run(issue_checkpoint_thread, sbi,
1912 "f2fs_ckpt-%u:%u", MAJOR(dev), MINOR(dev));
1913 if (IS_ERR(cprc->f2fs_issue_ckpt)) {
1914 int err = PTR_ERR(cprc->f2fs_issue_ckpt);
1916 cprc->f2fs_issue_ckpt = NULL;
1920 set_task_ioprio(cprc->f2fs_issue_ckpt, cprc->ckpt_thread_ioprio);
1925 void f2fs_stop_ckpt_thread(struct f2fs_sb_info *sbi)
1927 struct ckpt_req_control *cprc = &sbi->cprc_info;
1928 struct task_struct *ckpt_task;
1930 if (!cprc->f2fs_issue_ckpt)
1933 ckpt_task = cprc->f2fs_issue_ckpt;
1934 cprc->f2fs_issue_ckpt = NULL;
1935 kthread_stop(ckpt_task);
1937 f2fs_flush_ckpt_thread(sbi);
1940 void f2fs_flush_ckpt_thread(struct f2fs_sb_info *sbi)
1942 struct ckpt_req_control *cprc = &sbi->cprc_info;
1944 flush_remained_ckpt_reqs(sbi, NULL);
1946 /* Let's wait for the previous dispatched checkpoint. */
1947 while (atomic_read(&cprc->queued_ckpt))
1948 io_schedule_timeout(DEFAULT_IO_TIMEOUT);
1951 void f2fs_init_ckpt_req_control(struct f2fs_sb_info *sbi)
1953 struct ckpt_req_control *cprc = &sbi->cprc_info;
1955 atomic_set(&cprc->issued_ckpt, 0);
1956 atomic_set(&cprc->total_ckpt, 0);
1957 atomic_set(&cprc->queued_ckpt, 0);
1958 cprc->ckpt_thread_ioprio = DEFAULT_CHECKPOINT_IOPRIO;
1959 init_waitqueue_head(&cprc->ckpt_wait_queue);
1960 init_llist_head(&cprc->issue_list);
1961 spin_lock_init(&cprc->stat_lock);