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>
21 #include <trace/events/f2fs.h>
23 static struct kmem_cache *ino_entry_slab;
24 struct kmem_cache *f2fs_inode_entry_slab;
26 void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi, bool end_io)
28 f2fs_build_fault_attr(sbi, 0, 0);
29 set_ckpt_flags(sbi, CP_ERROR_FLAG);
31 f2fs_flush_merged_writes(sbi);
35 * We guarantee no failure on the returned page.
37 struct page *f2fs_grab_meta_page(struct f2fs_sb_info *sbi, pgoff_t index)
39 struct address_space *mapping = META_MAPPING(sbi);
40 struct page *page = NULL;
42 page = f2fs_grab_cache_page(mapping, index, false);
47 f2fs_wait_on_page_writeback(page, META, true, true);
48 if (!PageUptodate(page))
49 SetPageUptodate(page);
53 static struct page *__get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index,
56 struct address_space *mapping = META_MAPPING(sbi);
58 struct f2fs_io_info fio = {
62 .op_flags = REQ_META | REQ_PRIO,
65 .encrypted_page = NULL,
70 if (unlikely(!is_meta))
71 fio.op_flags &= ~REQ_META;
73 page = f2fs_grab_cache_page(mapping, index, false);
78 if (PageUptodate(page))
83 err = f2fs_submit_page_bio(&fio);
85 f2fs_put_page(page, 1);
89 f2fs_update_iostat(sbi, FS_META_READ_IO, F2FS_BLKSIZE);
92 if (unlikely(page->mapping != mapping)) {
93 f2fs_put_page(page, 1);
97 if (unlikely(!PageUptodate(page))) {
98 f2fs_put_page(page, 1);
105 struct page *f2fs_get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index)
107 return __get_meta_page(sbi, index, true);
110 struct page *f2fs_get_meta_page_nofail(struct f2fs_sb_info *sbi, pgoff_t index)
116 page = __get_meta_page(sbi, index, true);
118 if (PTR_ERR(page) == -EIO &&
119 ++count <= DEFAULT_RETRY_IO_COUNT)
121 f2fs_stop_checkpoint(sbi, false);
127 struct page *f2fs_get_tmp_page(struct f2fs_sb_info *sbi, pgoff_t index)
129 return __get_meta_page(sbi, index, false);
132 static bool __is_bitmap_valid(struct f2fs_sb_info *sbi, block_t blkaddr,
135 struct seg_entry *se;
136 unsigned int segno, offset;
139 if (type != DATA_GENERIC_ENHANCE && type != DATA_GENERIC_ENHANCE_READ)
142 segno = GET_SEGNO(sbi, blkaddr);
143 offset = GET_BLKOFF_FROM_SEG0(sbi, blkaddr);
144 se = get_seg_entry(sbi, segno);
146 exist = f2fs_test_bit(offset, se->cur_valid_map);
147 if (!exist && type == DATA_GENERIC_ENHANCE) {
148 f2fs_err(sbi, "Inconsistent error blkaddr:%u, sit bitmap:%d",
150 set_sbi_flag(sbi, SBI_NEED_FSCK);
156 bool f2fs_is_valid_blkaddr(struct f2fs_sb_info *sbi,
157 block_t blkaddr, int type)
163 if (unlikely(blkaddr >= SIT_BLK_CNT(sbi)))
167 if (unlikely(blkaddr >= MAIN_BLKADDR(sbi) ||
168 blkaddr < SM_I(sbi)->ssa_blkaddr))
172 if (unlikely(blkaddr >= SIT_I(sbi)->sit_base_addr ||
173 blkaddr < __start_cp_addr(sbi)))
177 if (unlikely(blkaddr >= MAX_BLKADDR(sbi) ||
178 blkaddr < MAIN_BLKADDR(sbi)))
182 case DATA_GENERIC_ENHANCE:
183 case DATA_GENERIC_ENHANCE_READ:
184 if (unlikely(blkaddr >= MAX_BLKADDR(sbi) ||
185 blkaddr < MAIN_BLKADDR(sbi))) {
186 f2fs_warn(sbi, "access invalid blkaddr:%u",
188 set_sbi_flag(sbi, SBI_NEED_FSCK);
192 return __is_bitmap_valid(sbi, blkaddr, type);
196 if (unlikely(blkaddr < SEG0_BLKADDR(sbi) ||
197 blkaddr >= MAIN_BLKADDR(sbi)))
208 * Readahead CP/NAT/SIT/SSA/POR pages
210 int f2fs_ra_meta_pages(struct f2fs_sb_info *sbi, block_t start, int nrpages,
214 block_t blkno = start;
215 struct f2fs_io_info fio = {
219 .op_flags = sync ? (REQ_META | REQ_PRIO) : REQ_RAHEAD,
220 .encrypted_page = NULL,
222 .is_por = (type == META_POR),
224 struct blk_plug plug;
227 if (unlikely(type == META_POR))
228 fio.op_flags &= ~REQ_META;
230 blk_start_plug(&plug);
231 for (; nrpages-- > 0; blkno++) {
233 if (!f2fs_is_valid_blkaddr(sbi, blkno, type))
238 if (unlikely(blkno >=
239 NAT_BLOCK_OFFSET(NM_I(sbi)->max_nid)))
241 /* get nat block addr */
242 fio.new_blkaddr = current_nat_addr(sbi,
243 blkno * NAT_ENTRY_PER_BLOCK);
246 /* get sit block addr */
247 fio.new_blkaddr = current_sit_addr(sbi,
248 blkno * SIT_ENTRY_PER_BLOCK);
253 fio.new_blkaddr = blkno;
259 page = f2fs_grab_cache_page(META_MAPPING(sbi),
260 fio.new_blkaddr, false);
263 if (PageUptodate(page)) {
264 f2fs_put_page(page, 1);
269 err = f2fs_submit_page_bio(&fio);
270 f2fs_put_page(page, err ? 1 : 0);
273 f2fs_update_iostat(sbi, FS_META_READ_IO, F2FS_BLKSIZE);
276 blk_finish_plug(&plug);
277 return blkno - start;
280 void f2fs_ra_meta_pages_cond(struct f2fs_sb_info *sbi, pgoff_t index)
283 bool readahead = false;
285 page = find_get_page(META_MAPPING(sbi), index);
286 if (!page || !PageUptodate(page))
288 f2fs_put_page(page, 0);
291 f2fs_ra_meta_pages(sbi, index, BIO_MAX_PAGES, META_POR, true);
294 static int __f2fs_write_meta_page(struct page *page,
295 struct writeback_control *wbc,
296 enum iostat_type io_type)
298 struct f2fs_sb_info *sbi = F2FS_P_SB(page);
300 trace_f2fs_writepage(page, META);
302 if (unlikely(f2fs_cp_error(sbi)))
304 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
306 if (wbc->for_reclaim && page->index < GET_SUM_BLOCK(sbi, 0))
309 f2fs_do_write_meta_page(sbi, page, io_type);
310 dec_page_count(sbi, F2FS_DIRTY_META);
312 if (wbc->for_reclaim)
313 f2fs_submit_merged_write_cond(sbi, NULL, page, 0, META);
317 if (unlikely(f2fs_cp_error(sbi)))
318 f2fs_submit_merged_write(sbi, META);
323 redirty_page_for_writepage(wbc, page);
324 return AOP_WRITEPAGE_ACTIVATE;
327 static int f2fs_write_meta_page(struct page *page,
328 struct writeback_control *wbc)
330 return __f2fs_write_meta_page(page, wbc, FS_META_IO);
333 static int f2fs_write_meta_pages(struct address_space *mapping,
334 struct writeback_control *wbc)
336 struct f2fs_sb_info *sbi = F2FS_M_SB(mapping);
339 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
342 /* collect a number of dirty meta pages and write together */
343 if (wbc->sync_mode != WB_SYNC_ALL &&
344 get_pages(sbi, F2FS_DIRTY_META) <
345 nr_pages_to_skip(sbi, META))
348 /* if locked failed, cp will flush dirty pages instead */
349 if (!mutex_trylock(&sbi->cp_mutex))
352 trace_f2fs_writepages(mapping->host, wbc, META);
353 diff = nr_pages_to_write(sbi, META, wbc);
354 written = f2fs_sync_meta_pages(sbi, META, wbc->nr_to_write, FS_META_IO);
355 mutex_unlock(&sbi->cp_mutex);
356 wbc->nr_to_write = max((long)0, wbc->nr_to_write - written - diff);
360 wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_META);
361 trace_f2fs_writepages(mapping->host, wbc, META);
365 long f2fs_sync_meta_pages(struct f2fs_sb_info *sbi, enum page_type type,
366 long nr_to_write, enum iostat_type io_type)
368 struct address_space *mapping = META_MAPPING(sbi);
369 pgoff_t index = 0, prev = ULONG_MAX;
373 struct writeback_control wbc = {
376 struct blk_plug plug;
380 blk_start_plug(&plug);
382 while ((nr_pages = pagevec_lookup_tag(&pvec, mapping, &index,
383 PAGECACHE_TAG_DIRTY))) {
386 for (i = 0; i < nr_pages; i++) {
387 struct page *page = pvec.pages[i];
389 if (prev == ULONG_MAX)
390 prev = page->index - 1;
391 if (nr_to_write != LONG_MAX && page->index != prev + 1) {
392 pagevec_release(&pvec);
398 if (unlikely(page->mapping != mapping)) {
403 if (!PageDirty(page)) {
404 /* someone wrote it for us */
405 goto continue_unlock;
408 f2fs_wait_on_page_writeback(page, META, true, true);
410 if (!clear_page_dirty_for_io(page))
411 goto continue_unlock;
413 if (__f2fs_write_meta_page(page, &wbc, io_type)) {
419 if (unlikely(nwritten >= nr_to_write))
422 pagevec_release(&pvec);
427 f2fs_submit_merged_write(sbi, type);
429 blk_finish_plug(&plug);
434 static int f2fs_set_meta_page_dirty(struct page *page)
436 trace_f2fs_set_page_dirty(page, META);
438 if (!PageUptodate(page))
439 SetPageUptodate(page);
440 if (!PageDirty(page)) {
441 __set_page_dirty_nobuffers(page);
442 inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_META);
443 f2fs_set_page_private(page, 0);
444 f2fs_trace_pid(page);
450 const struct address_space_operations f2fs_meta_aops = {
451 .writepage = f2fs_write_meta_page,
452 .writepages = f2fs_write_meta_pages,
453 .set_page_dirty = f2fs_set_meta_page_dirty,
454 .invalidatepage = f2fs_invalidate_page,
455 .releasepage = f2fs_release_page,
456 #ifdef CONFIG_MIGRATION
457 .migratepage = f2fs_migrate_page,
461 static void __add_ino_entry(struct f2fs_sb_info *sbi, nid_t ino,
462 unsigned int devidx, int type)
464 struct inode_management *im = &sbi->im[type];
465 struct ino_entry *e, *tmp;
467 tmp = f2fs_kmem_cache_alloc(ino_entry_slab, GFP_NOFS);
469 radix_tree_preload(GFP_NOFS | __GFP_NOFAIL);
471 spin_lock(&im->ino_lock);
472 e = radix_tree_lookup(&im->ino_root, ino);
475 if (unlikely(radix_tree_insert(&im->ino_root, ino, e)))
478 memset(e, 0, sizeof(struct ino_entry));
481 list_add_tail(&e->list, &im->ino_list);
482 if (type != ORPHAN_INO)
486 if (type == FLUSH_INO)
487 f2fs_set_bit(devidx, (char *)&e->dirty_device);
489 spin_unlock(&im->ino_lock);
490 radix_tree_preload_end();
493 kmem_cache_free(ino_entry_slab, tmp);
496 static void __remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type)
498 struct inode_management *im = &sbi->im[type];
501 spin_lock(&im->ino_lock);
502 e = radix_tree_lookup(&im->ino_root, ino);
505 radix_tree_delete(&im->ino_root, ino);
507 spin_unlock(&im->ino_lock);
508 kmem_cache_free(ino_entry_slab, e);
511 spin_unlock(&im->ino_lock);
514 void f2fs_add_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type)
516 /* add new dirty ino entry into list */
517 __add_ino_entry(sbi, ino, 0, type);
520 void f2fs_remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type)
522 /* remove dirty ino entry from list */
523 __remove_ino_entry(sbi, ino, type);
526 /* mode should be APPEND_INO, UPDATE_INO or TRANS_DIR_INO */
527 bool f2fs_exist_written_data(struct f2fs_sb_info *sbi, nid_t ino, int mode)
529 struct inode_management *im = &sbi->im[mode];
532 spin_lock(&im->ino_lock);
533 e = radix_tree_lookup(&im->ino_root, ino);
534 spin_unlock(&im->ino_lock);
535 return e ? true : false;
538 void f2fs_release_ino_entry(struct f2fs_sb_info *sbi, bool all)
540 struct ino_entry *e, *tmp;
543 for (i = all ? ORPHAN_INO : APPEND_INO; i < MAX_INO_ENTRY; i++) {
544 struct inode_management *im = &sbi->im[i];
546 spin_lock(&im->ino_lock);
547 list_for_each_entry_safe(e, tmp, &im->ino_list, list) {
549 radix_tree_delete(&im->ino_root, e->ino);
550 kmem_cache_free(ino_entry_slab, e);
553 spin_unlock(&im->ino_lock);
557 void f2fs_set_dirty_device(struct f2fs_sb_info *sbi, nid_t ino,
558 unsigned int devidx, int type)
560 __add_ino_entry(sbi, ino, devidx, type);
563 bool f2fs_is_dirty_device(struct f2fs_sb_info *sbi, nid_t ino,
564 unsigned int devidx, int type)
566 struct inode_management *im = &sbi->im[type];
568 bool is_dirty = false;
570 spin_lock(&im->ino_lock);
571 e = radix_tree_lookup(&im->ino_root, ino);
572 if (e && f2fs_test_bit(devidx, (char *)&e->dirty_device))
574 spin_unlock(&im->ino_lock);
578 int f2fs_acquire_orphan_inode(struct f2fs_sb_info *sbi)
580 struct inode_management *im = &sbi->im[ORPHAN_INO];
583 spin_lock(&im->ino_lock);
585 if (time_to_inject(sbi, FAULT_ORPHAN)) {
586 spin_unlock(&im->ino_lock);
587 f2fs_show_injection_info(sbi, FAULT_ORPHAN);
591 if (unlikely(im->ino_num >= sbi->max_orphans))
595 spin_unlock(&im->ino_lock);
600 void f2fs_release_orphan_inode(struct f2fs_sb_info *sbi)
602 struct inode_management *im = &sbi->im[ORPHAN_INO];
604 spin_lock(&im->ino_lock);
605 f2fs_bug_on(sbi, im->ino_num == 0);
607 spin_unlock(&im->ino_lock);
610 void f2fs_add_orphan_inode(struct inode *inode)
612 /* add new orphan ino entry into list */
613 __add_ino_entry(F2FS_I_SB(inode), inode->i_ino, 0, ORPHAN_INO);
614 f2fs_update_inode_page(inode);
617 void f2fs_remove_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino)
619 /* remove orphan entry from orphan list */
620 __remove_ino_entry(sbi, ino, ORPHAN_INO);
623 static int recover_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino)
629 inode = f2fs_iget_retry(sbi->sb, ino);
632 * there should be a bug that we can't find the entry
635 f2fs_bug_on(sbi, PTR_ERR(inode) == -ENOENT);
636 return PTR_ERR(inode);
639 err = dquot_initialize(inode);
647 /* truncate all the data during iput */
650 err = f2fs_get_node_info(sbi, ino, &ni);
654 /* ENOMEM was fully retried in f2fs_evict_inode. */
655 if (ni.blk_addr != NULL_ADDR) {
662 set_sbi_flag(sbi, SBI_NEED_FSCK);
663 f2fs_warn(sbi, "%s: orphan failed (ino=%x), run fsck to fix.",
668 int f2fs_recover_orphan_inodes(struct f2fs_sb_info *sbi)
670 block_t start_blk, orphan_blocks, i, j;
671 unsigned int s_flags = sbi->sb->s_flags;
677 if (!is_set_ckpt_flags(sbi, CP_ORPHAN_PRESENT_FLAG))
680 if (bdev_read_only(sbi->sb->s_bdev)) {
681 f2fs_info(sbi, "write access unavailable, skipping orphan cleanup");
685 if (s_flags & SB_RDONLY) {
686 f2fs_info(sbi, "orphan cleanup on readonly fs");
687 sbi->sb->s_flags &= ~SB_RDONLY;
691 /* Needed for iput() to work correctly and not trash data */
692 sbi->sb->s_flags |= SB_ACTIVE;
695 * Turn on quotas which were not enabled for read-only mounts if
696 * filesystem has quota feature, so that they are updated correctly.
698 quota_enabled = f2fs_enable_quota_files(sbi, s_flags & SB_RDONLY);
701 start_blk = __start_cp_addr(sbi) + 1 + __cp_payload(sbi);
702 orphan_blocks = __start_sum_addr(sbi) - 1 - __cp_payload(sbi);
704 f2fs_ra_meta_pages(sbi, start_blk, orphan_blocks, META_CP, true);
706 for (i = 0; i < orphan_blocks; i++) {
708 struct f2fs_orphan_block *orphan_blk;
710 page = f2fs_get_meta_page(sbi, start_blk + i);
716 orphan_blk = (struct f2fs_orphan_block *)page_address(page);
717 for (j = 0; j < le32_to_cpu(orphan_blk->entry_count); j++) {
718 nid_t ino = le32_to_cpu(orphan_blk->ino[j]);
719 err = recover_orphan_inode(sbi, ino);
721 f2fs_put_page(page, 1);
725 f2fs_put_page(page, 1);
727 /* clear Orphan Flag */
728 clear_ckpt_flags(sbi, CP_ORPHAN_PRESENT_FLAG);
730 set_sbi_flag(sbi, SBI_IS_RECOVERED);
733 /* Turn quotas off */
735 f2fs_quota_off_umount(sbi->sb);
737 sbi->sb->s_flags = s_flags; /* Restore SB_RDONLY status */
742 static void write_orphan_inodes(struct f2fs_sb_info *sbi, block_t start_blk)
744 struct list_head *head;
745 struct f2fs_orphan_block *orphan_blk = NULL;
746 unsigned int nentries = 0;
747 unsigned short index = 1;
748 unsigned short orphan_blocks;
749 struct page *page = NULL;
750 struct ino_entry *orphan = NULL;
751 struct inode_management *im = &sbi->im[ORPHAN_INO];
753 orphan_blocks = GET_ORPHAN_BLOCKS(im->ino_num);
756 * we don't need to do spin_lock(&im->ino_lock) here, since all the
757 * orphan inode operations are covered under f2fs_lock_op().
758 * And, spin_lock should be avoided due to page operations below.
760 head = &im->ino_list;
762 /* loop for each orphan inode entry and write them in Jornal block */
763 list_for_each_entry(orphan, head, list) {
765 page = f2fs_grab_meta_page(sbi, start_blk++);
767 (struct f2fs_orphan_block *)page_address(page);
768 memset(orphan_blk, 0, sizeof(*orphan_blk));
771 orphan_blk->ino[nentries++] = cpu_to_le32(orphan->ino);
773 if (nentries == F2FS_ORPHANS_PER_BLOCK) {
775 * an orphan block is full of 1020 entries,
776 * then we need to flush current orphan blocks
777 * and bring another one in memory
779 orphan_blk->blk_addr = cpu_to_le16(index);
780 orphan_blk->blk_count = cpu_to_le16(orphan_blocks);
781 orphan_blk->entry_count = cpu_to_le32(nentries);
782 set_page_dirty(page);
783 f2fs_put_page(page, 1);
791 orphan_blk->blk_addr = cpu_to_le16(index);
792 orphan_blk->blk_count = cpu_to_le16(orphan_blocks);
793 orphan_blk->entry_count = cpu_to_le32(nentries);
794 set_page_dirty(page);
795 f2fs_put_page(page, 1);
799 static __u32 f2fs_checkpoint_chksum(struct f2fs_sb_info *sbi,
800 struct f2fs_checkpoint *ckpt)
802 unsigned int chksum_ofs = le32_to_cpu(ckpt->checksum_offset);
805 chksum = f2fs_crc32(sbi, ckpt, chksum_ofs);
806 if (chksum_ofs < CP_CHKSUM_OFFSET) {
807 chksum_ofs += sizeof(chksum);
808 chksum = f2fs_chksum(sbi, chksum, (__u8 *)ckpt + chksum_ofs,
809 F2FS_BLKSIZE - chksum_ofs);
814 static int get_checkpoint_version(struct f2fs_sb_info *sbi, block_t cp_addr,
815 struct f2fs_checkpoint **cp_block, struct page **cp_page,
816 unsigned long long *version)
818 size_t crc_offset = 0;
821 *cp_page = f2fs_get_meta_page(sbi, cp_addr);
822 if (IS_ERR(*cp_page))
823 return PTR_ERR(*cp_page);
825 *cp_block = (struct f2fs_checkpoint *)page_address(*cp_page);
827 crc_offset = le32_to_cpu((*cp_block)->checksum_offset);
828 if (crc_offset < CP_MIN_CHKSUM_OFFSET ||
829 crc_offset > CP_CHKSUM_OFFSET) {
830 f2fs_put_page(*cp_page, 1);
831 f2fs_warn(sbi, "invalid crc_offset: %zu", crc_offset);
835 crc = f2fs_checkpoint_chksum(sbi, *cp_block);
836 if (crc != cur_cp_crc(*cp_block)) {
837 f2fs_put_page(*cp_page, 1);
838 f2fs_warn(sbi, "invalid crc value");
842 *version = cur_cp_version(*cp_block);
846 static struct page *validate_checkpoint(struct f2fs_sb_info *sbi,
847 block_t cp_addr, unsigned long long *version)
849 struct page *cp_page_1 = NULL, *cp_page_2 = NULL;
850 struct f2fs_checkpoint *cp_block = NULL;
851 unsigned long long cur_version = 0, pre_version = 0;
854 err = get_checkpoint_version(sbi, cp_addr, &cp_block,
855 &cp_page_1, version);
859 if (le32_to_cpu(cp_block->cp_pack_total_block_count) >
860 sbi->blocks_per_seg) {
861 f2fs_warn(sbi, "invalid cp_pack_total_block_count:%u",
862 le32_to_cpu(cp_block->cp_pack_total_block_count));
865 pre_version = *version;
867 cp_addr += le32_to_cpu(cp_block->cp_pack_total_block_count) - 1;
868 err = get_checkpoint_version(sbi, cp_addr, &cp_block,
869 &cp_page_2, version);
872 cur_version = *version;
874 if (cur_version == pre_version) {
875 *version = cur_version;
876 f2fs_put_page(cp_page_2, 1);
879 f2fs_put_page(cp_page_2, 1);
881 f2fs_put_page(cp_page_1, 1);
885 int f2fs_get_valid_checkpoint(struct f2fs_sb_info *sbi)
887 struct f2fs_checkpoint *cp_block;
888 struct f2fs_super_block *fsb = sbi->raw_super;
889 struct page *cp1, *cp2, *cur_page;
890 unsigned long blk_size = sbi->blocksize;
891 unsigned long long cp1_version = 0, cp2_version = 0;
892 unsigned long long cp_start_blk_no;
893 unsigned int cp_blks = 1 + __cp_payload(sbi);
898 sbi->ckpt = f2fs_kvzalloc(sbi, array_size(blk_size, cp_blks),
903 * Finding out valid cp block involves read both
904 * sets( cp pack 1 and cp pack 2)
906 cp_start_blk_no = le32_to_cpu(fsb->cp_blkaddr);
907 cp1 = validate_checkpoint(sbi, cp_start_blk_no, &cp1_version);
909 /* The second checkpoint pack should start at the next segment */
910 cp_start_blk_no += ((unsigned long long)1) <<
911 le32_to_cpu(fsb->log_blocks_per_seg);
912 cp2 = validate_checkpoint(sbi, cp_start_blk_no, &cp2_version);
915 if (ver_after(cp2_version, cp1_version))
928 cp_block = (struct f2fs_checkpoint *)page_address(cur_page);
929 memcpy(sbi->ckpt, cp_block, blk_size);
932 sbi->cur_cp_pack = 1;
934 sbi->cur_cp_pack = 2;
936 /* Sanity checking of checkpoint */
937 if (f2fs_sanity_check_ckpt(sbi)) {
939 goto free_fail_no_cp;
945 cp_blk_no = le32_to_cpu(fsb->cp_blkaddr);
947 cp_blk_no += 1 << le32_to_cpu(fsb->log_blocks_per_seg);
949 for (i = 1; i < cp_blks; i++) {
950 void *sit_bitmap_ptr;
951 unsigned char *ckpt = (unsigned char *)sbi->ckpt;
953 cur_page = f2fs_get_meta_page(sbi, cp_blk_no + i);
954 if (IS_ERR(cur_page)) {
955 err = PTR_ERR(cur_page);
956 goto free_fail_no_cp;
958 sit_bitmap_ptr = page_address(cur_page);
959 memcpy(ckpt + i * blk_size, sit_bitmap_ptr, blk_size);
960 f2fs_put_page(cur_page, 1);
963 f2fs_put_page(cp1, 1);
964 f2fs_put_page(cp2, 1);
968 f2fs_put_page(cp1, 1);
969 f2fs_put_page(cp2, 1);
975 static void __add_dirty_inode(struct inode *inode, enum inode_type type)
977 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
978 int flag = (type == DIR_INODE) ? FI_DIRTY_DIR : FI_DIRTY_FILE;
980 if (is_inode_flag_set(inode, flag))
983 set_inode_flag(inode, flag);
984 if (!f2fs_is_volatile_file(inode))
985 list_add_tail(&F2FS_I(inode)->dirty_list,
986 &sbi->inode_list[type]);
987 stat_inc_dirty_inode(sbi, type);
990 static void __remove_dirty_inode(struct inode *inode, enum inode_type type)
992 int flag = (type == DIR_INODE) ? FI_DIRTY_DIR : FI_DIRTY_FILE;
994 if (get_dirty_pages(inode) || !is_inode_flag_set(inode, flag))
997 list_del_init(&F2FS_I(inode)->dirty_list);
998 clear_inode_flag(inode, flag);
999 stat_dec_dirty_inode(F2FS_I_SB(inode), type);
1002 void f2fs_update_dirty_page(struct inode *inode, struct page *page)
1004 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1005 enum inode_type type = S_ISDIR(inode->i_mode) ? DIR_INODE : FILE_INODE;
1007 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&
1008 !S_ISLNK(inode->i_mode))
1011 spin_lock(&sbi->inode_lock[type]);
1012 if (type != FILE_INODE || test_opt(sbi, DATA_FLUSH))
1013 __add_dirty_inode(inode, type);
1014 inode_inc_dirty_pages(inode);
1015 spin_unlock(&sbi->inode_lock[type]);
1017 f2fs_set_page_private(page, 0);
1018 f2fs_trace_pid(page);
1021 void f2fs_remove_dirty_inode(struct inode *inode)
1023 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1024 enum inode_type type = S_ISDIR(inode->i_mode) ? DIR_INODE : FILE_INODE;
1026 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&
1027 !S_ISLNK(inode->i_mode))
1030 if (type == FILE_INODE && !test_opt(sbi, DATA_FLUSH))
1033 spin_lock(&sbi->inode_lock[type]);
1034 __remove_dirty_inode(inode, type);
1035 spin_unlock(&sbi->inode_lock[type]);
1038 int f2fs_sync_dirty_inodes(struct f2fs_sb_info *sbi, enum inode_type type)
1040 struct list_head *head;
1041 struct inode *inode;
1042 struct f2fs_inode_info *fi;
1043 bool is_dir = (type == DIR_INODE);
1044 unsigned long ino = 0;
1046 trace_f2fs_sync_dirty_inodes_enter(sbi->sb, is_dir,
1047 get_pages(sbi, is_dir ?
1048 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA));
1050 if (unlikely(f2fs_cp_error(sbi)))
1053 spin_lock(&sbi->inode_lock[type]);
1055 head = &sbi->inode_list[type];
1056 if (list_empty(head)) {
1057 spin_unlock(&sbi->inode_lock[type]);
1058 trace_f2fs_sync_dirty_inodes_exit(sbi->sb, is_dir,
1059 get_pages(sbi, is_dir ?
1060 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA));
1063 fi = list_first_entry(head, struct f2fs_inode_info, dirty_list);
1064 inode = igrab(&fi->vfs_inode);
1065 spin_unlock(&sbi->inode_lock[type]);
1067 unsigned long cur_ino = inode->i_ino;
1069 F2FS_I(inode)->cp_task = current;
1071 filemap_fdatawrite(inode->i_mapping);
1073 F2FS_I(inode)->cp_task = NULL;
1076 /* We need to give cpu to another writers. */
1083 * We should submit bio, since it exists several
1084 * wribacking dentry pages in the freeing inode.
1086 f2fs_submit_merged_write(sbi, DATA);
1092 int f2fs_sync_inode_meta(struct f2fs_sb_info *sbi)
1094 struct list_head *head = &sbi->inode_list[DIRTY_META];
1095 struct inode *inode;
1096 struct f2fs_inode_info *fi;
1097 s64 total = get_pages(sbi, F2FS_DIRTY_IMETA);
1100 if (unlikely(f2fs_cp_error(sbi)))
1103 spin_lock(&sbi->inode_lock[DIRTY_META]);
1104 if (list_empty(head)) {
1105 spin_unlock(&sbi->inode_lock[DIRTY_META]);
1108 fi = list_first_entry(head, struct f2fs_inode_info,
1110 inode = igrab(&fi->vfs_inode);
1111 spin_unlock(&sbi->inode_lock[DIRTY_META]);
1113 sync_inode_metadata(inode, 0);
1115 /* it's on eviction */
1116 if (is_inode_flag_set(inode, FI_DIRTY_INODE))
1117 f2fs_update_inode_page(inode);
1124 static void __prepare_cp_block(struct f2fs_sb_info *sbi)
1126 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1127 struct f2fs_nm_info *nm_i = NM_I(sbi);
1128 nid_t last_nid = nm_i->next_scan_nid;
1130 next_free_nid(sbi, &last_nid);
1131 ckpt->valid_block_count = cpu_to_le64(valid_user_blocks(sbi));
1132 ckpt->valid_node_count = cpu_to_le32(valid_node_count(sbi));
1133 ckpt->valid_inode_count = cpu_to_le32(valid_inode_count(sbi));
1134 ckpt->next_free_nid = cpu_to_le32(last_nid);
1137 static bool __need_flush_quota(struct f2fs_sb_info *sbi)
1141 if (!is_journalled_quota(sbi))
1144 down_write(&sbi->quota_sem);
1145 if (is_sbi_flag_set(sbi, SBI_QUOTA_SKIP_FLUSH)) {
1147 } else if (is_sbi_flag_set(sbi, SBI_QUOTA_NEED_REPAIR)) {
1149 } else if (is_sbi_flag_set(sbi, SBI_QUOTA_NEED_FLUSH)) {
1150 clear_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH);
1152 } else if (get_pages(sbi, F2FS_DIRTY_QDATA)) {
1155 up_write(&sbi->quota_sem);
1160 * Freeze all the FS-operations for checkpoint.
1162 static int block_operations(struct f2fs_sb_info *sbi)
1164 struct writeback_control wbc = {
1165 .sync_mode = WB_SYNC_ALL,
1166 .nr_to_write = LONG_MAX,
1169 int err = 0, cnt = 0;
1172 * Let's flush inline_data in dirty node pages.
1174 f2fs_flush_inline_data(sbi);
1178 if (__need_flush_quota(sbi)) {
1181 if (++cnt > DEFAULT_RETRY_QUOTA_FLUSH_COUNT) {
1182 set_sbi_flag(sbi, SBI_QUOTA_SKIP_FLUSH);
1183 set_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH);
1184 goto retry_flush_dents;
1186 f2fs_unlock_all(sbi);
1188 /* only failed during mount/umount/freeze/quotactl */
1189 locked = down_read_trylock(&sbi->sb->s_umount);
1190 f2fs_quota_sync(sbi->sb, -1);
1192 up_read(&sbi->sb->s_umount);
1194 goto retry_flush_quotas;
1198 /* write all the dirty dentry pages */
1199 if (get_pages(sbi, F2FS_DIRTY_DENTS)) {
1200 f2fs_unlock_all(sbi);
1201 err = f2fs_sync_dirty_inodes(sbi, DIR_INODE);
1205 goto retry_flush_quotas;
1209 * POR: we should ensure that there are no dirty node pages
1210 * until finishing nat/sit flush. inode->i_blocks can be updated.
1212 down_write(&sbi->node_change);
1214 if (get_pages(sbi, F2FS_DIRTY_IMETA)) {
1215 up_write(&sbi->node_change);
1216 f2fs_unlock_all(sbi);
1217 err = f2fs_sync_inode_meta(sbi);
1221 goto retry_flush_quotas;
1225 down_write(&sbi->node_write);
1227 if (get_pages(sbi, F2FS_DIRTY_NODES)) {
1228 up_write(&sbi->node_write);
1229 atomic_inc(&sbi->wb_sync_req[NODE]);
1230 err = f2fs_sync_node_pages(sbi, &wbc, false, FS_CP_NODE_IO);
1231 atomic_dec(&sbi->wb_sync_req[NODE]);
1233 up_write(&sbi->node_change);
1234 f2fs_unlock_all(sbi);
1238 goto retry_flush_nodes;
1242 * sbi->node_change is used only for AIO write_begin path which produces
1243 * dirty node blocks and some checkpoint values by block allocation.
1245 __prepare_cp_block(sbi);
1246 up_write(&sbi->node_change);
1250 static void unblock_operations(struct f2fs_sb_info *sbi)
1252 up_write(&sbi->node_write);
1253 f2fs_unlock_all(sbi);
1256 void f2fs_wait_on_all_pages(struct f2fs_sb_info *sbi, int type)
1261 if (!get_pages(sbi, type))
1264 if (unlikely(f2fs_cp_error(sbi)))
1267 if (type == F2FS_DIRTY_META)
1268 f2fs_sync_meta_pages(sbi, META, LONG_MAX,
1270 else if (type == F2FS_WB_CP_DATA)
1271 f2fs_submit_merged_write(sbi, DATA);
1273 prepare_to_wait(&sbi->cp_wait, &wait, TASK_UNINTERRUPTIBLE);
1274 io_schedule_timeout(DEFAULT_IO_TIMEOUT);
1276 finish_wait(&sbi->cp_wait, &wait);
1279 static void update_ckpt_flags(struct f2fs_sb_info *sbi, struct cp_control *cpc)
1281 unsigned long orphan_num = sbi->im[ORPHAN_INO].ino_num;
1282 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1283 unsigned long flags;
1285 spin_lock_irqsave(&sbi->cp_lock, flags);
1287 if ((cpc->reason & CP_UMOUNT) &&
1288 le32_to_cpu(ckpt->cp_pack_total_block_count) >
1289 sbi->blocks_per_seg - NM_I(sbi)->nat_bits_blocks)
1290 disable_nat_bits(sbi, false);
1292 if (cpc->reason & CP_TRIMMED)
1293 __set_ckpt_flags(ckpt, CP_TRIMMED_FLAG);
1295 __clear_ckpt_flags(ckpt, CP_TRIMMED_FLAG);
1297 if (cpc->reason & CP_UMOUNT)
1298 __set_ckpt_flags(ckpt, CP_UMOUNT_FLAG);
1300 __clear_ckpt_flags(ckpt, CP_UMOUNT_FLAG);
1302 if (cpc->reason & CP_FASTBOOT)
1303 __set_ckpt_flags(ckpt, CP_FASTBOOT_FLAG);
1305 __clear_ckpt_flags(ckpt, CP_FASTBOOT_FLAG);
1308 __set_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG);
1310 __clear_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG);
1312 if (is_sbi_flag_set(sbi, SBI_NEED_FSCK))
1313 __set_ckpt_flags(ckpt, CP_FSCK_FLAG);
1315 if (is_sbi_flag_set(sbi, SBI_IS_RESIZEFS))
1316 __set_ckpt_flags(ckpt, CP_RESIZEFS_FLAG);
1318 __clear_ckpt_flags(ckpt, CP_RESIZEFS_FLAG);
1320 if (is_sbi_flag_set(sbi, SBI_CP_DISABLED))
1321 __set_ckpt_flags(ckpt, CP_DISABLED_FLAG);
1323 __clear_ckpt_flags(ckpt, CP_DISABLED_FLAG);
1325 if (is_sbi_flag_set(sbi, SBI_CP_DISABLED_QUICK))
1326 __set_ckpt_flags(ckpt, CP_DISABLED_QUICK_FLAG);
1328 __clear_ckpt_flags(ckpt, CP_DISABLED_QUICK_FLAG);
1330 if (is_sbi_flag_set(sbi, SBI_QUOTA_SKIP_FLUSH))
1331 __set_ckpt_flags(ckpt, CP_QUOTA_NEED_FSCK_FLAG);
1333 __clear_ckpt_flags(ckpt, CP_QUOTA_NEED_FSCK_FLAG);
1335 if (is_sbi_flag_set(sbi, SBI_QUOTA_NEED_REPAIR))
1336 __set_ckpt_flags(ckpt, CP_QUOTA_NEED_FSCK_FLAG);
1338 /* set this flag to activate crc|cp_ver for recovery */
1339 __set_ckpt_flags(ckpt, CP_CRC_RECOVERY_FLAG);
1340 __clear_ckpt_flags(ckpt, CP_NOCRC_RECOVERY_FLAG);
1342 spin_unlock_irqrestore(&sbi->cp_lock, flags);
1345 static void commit_checkpoint(struct f2fs_sb_info *sbi,
1346 void *src, block_t blk_addr)
1348 struct writeback_control wbc = {
1353 * pagevec_lookup_tag and lock_page again will take
1354 * some extra time. Therefore, f2fs_update_meta_pages and
1355 * f2fs_sync_meta_pages are combined in this function.
1357 struct page *page = f2fs_grab_meta_page(sbi, blk_addr);
1360 f2fs_wait_on_page_writeback(page, META, true, true);
1362 memcpy(page_address(page), src, PAGE_SIZE);
1364 set_page_dirty(page);
1365 if (unlikely(!clear_page_dirty_for_io(page)))
1366 f2fs_bug_on(sbi, 1);
1368 /* writeout cp pack 2 page */
1369 err = __f2fs_write_meta_page(page, &wbc, FS_CP_META_IO);
1370 if (unlikely(err && f2fs_cp_error(sbi))) {
1371 f2fs_put_page(page, 1);
1375 f2fs_bug_on(sbi, err);
1376 f2fs_put_page(page, 0);
1378 /* submit checkpoint (with barrier if NOBARRIER is not set) */
1379 f2fs_submit_merged_write(sbi, META_FLUSH);
1382 static int do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
1384 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1385 struct f2fs_nm_info *nm_i = NM_I(sbi);
1386 unsigned long orphan_num = sbi->im[ORPHAN_INO].ino_num, flags;
1388 unsigned int data_sum_blocks, orphan_blocks;
1391 int cp_payload_blks = __cp_payload(sbi);
1392 struct super_block *sb = sbi->sb;
1393 struct curseg_info *seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE);
1397 /* Flush all the NAT/SIT pages */
1398 f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_CP_META_IO);
1400 /* start to update checkpoint, cp ver is already updated previously */
1401 ckpt->elapsed_time = cpu_to_le64(get_mtime(sbi, true));
1402 ckpt->free_segment_count = cpu_to_le32(free_segments(sbi));
1403 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
1404 ckpt->cur_node_segno[i] =
1405 cpu_to_le32(curseg_segno(sbi, i + CURSEG_HOT_NODE));
1406 ckpt->cur_node_blkoff[i] =
1407 cpu_to_le16(curseg_blkoff(sbi, i + CURSEG_HOT_NODE));
1408 ckpt->alloc_type[i + CURSEG_HOT_NODE] =
1409 curseg_alloc_type(sbi, i + CURSEG_HOT_NODE);
1411 for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) {
1412 ckpt->cur_data_segno[i] =
1413 cpu_to_le32(curseg_segno(sbi, i + CURSEG_HOT_DATA));
1414 ckpt->cur_data_blkoff[i] =
1415 cpu_to_le16(curseg_blkoff(sbi, i + CURSEG_HOT_DATA));
1416 ckpt->alloc_type[i + CURSEG_HOT_DATA] =
1417 curseg_alloc_type(sbi, i + CURSEG_HOT_DATA);
1420 /* 2 cp + n data seg summary + orphan inode blocks */
1421 data_sum_blocks = f2fs_npages_for_summary_flush(sbi, false);
1422 spin_lock_irqsave(&sbi->cp_lock, flags);
1423 if (data_sum_blocks < NR_CURSEG_DATA_TYPE)
1424 __set_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG);
1426 __clear_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG);
1427 spin_unlock_irqrestore(&sbi->cp_lock, flags);
1429 orphan_blocks = GET_ORPHAN_BLOCKS(orphan_num);
1430 ckpt->cp_pack_start_sum = cpu_to_le32(1 + cp_payload_blks +
1433 if (__remain_node_summaries(cpc->reason))
1434 ckpt->cp_pack_total_block_count = cpu_to_le32(F2FS_CP_PACKS+
1435 cp_payload_blks + data_sum_blocks +
1436 orphan_blocks + NR_CURSEG_NODE_TYPE);
1438 ckpt->cp_pack_total_block_count = cpu_to_le32(F2FS_CP_PACKS +
1439 cp_payload_blks + data_sum_blocks +
1442 /* update ckpt flag for checkpoint */
1443 update_ckpt_flags(sbi, cpc);
1445 /* update SIT/NAT bitmap */
1446 get_sit_bitmap(sbi, __bitmap_ptr(sbi, SIT_BITMAP));
1447 get_nat_bitmap(sbi, __bitmap_ptr(sbi, NAT_BITMAP));
1449 crc32 = f2fs_checkpoint_chksum(sbi, ckpt);
1450 *((__le32 *)((unsigned char *)ckpt +
1451 le32_to_cpu(ckpt->checksum_offset)))
1452 = cpu_to_le32(crc32);
1454 start_blk = __start_cp_next_addr(sbi);
1456 /* write nat bits */
1457 if (enabled_nat_bits(sbi, cpc)) {
1458 __u64 cp_ver = cur_cp_version(ckpt);
1461 cp_ver |= ((__u64)crc32 << 32);
1462 *(__le64 *)nm_i->nat_bits = cpu_to_le64(cp_ver);
1464 blk = start_blk + sbi->blocks_per_seg - nm_i->nat_bits_blocks;
1465 for (i = 0; i < nm_i->nat_bits_blocks; i++)
1466 f2fs_update_meta_page(sbi, nm_i->nat_bits +
1467 (i << F2FS_BLKSIZE_BITS), blk + i);
1470 /* write out checkpoint buffer at block 0 */
1471 f2fs_update_meta_page(sbi, ckpt, start_blk++);
1473 for (i = 1; i < 1 + cp_payload_blks; i++)
1474 f2fs_update_meta_page(sbi, (char *)ckpt + i * F2FS_BLKSIZE,
1478 write_orphan_inodes(sbi, start_blk);
1479 start_blk += orphan_blocks;
1482 f2fs_write_data_summaries(sbi, start_blk);
1483 start_blk += data_sum_blocks;
1485 /* Record write statistics in the hot node summary */
1486 kbytes_written = sbi->kbytes_written;
1487 if (sb->s_bdev->bd_part)
1488 kbytes_written += BD_PART_WRITTEN(sbi);
1490 seg_i->journal->info.kbytes_written = cpu_to_le64(kbytes_written);
1492 if (__remain_node_summaries(cpc->reason)) {
1493 f2fs_write_node_summaries(sbi, start_blk);
1494 start_blk += NR_CURSEG_NODE_TYPE;
1497 /* update user_block_counts */
1498 sbi->last_valid_block_count = sbi->total_valid_block_count;
1499 percpu_counter_set(&sbi->alloc_valid_block_count, 0);
1501 /* Here, we have one bio having CP pack except cp pack 2 page */
1502 f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_CP_META_IO);
1503 /* Wait for all dirty meta pages to be submitted for IO */
1504 f2fs_wait_on_all_pages(sbi, F2FS_DIRTY_META);
1506 /* wait for previous submitted meta pages writeback */
1507 f2fs_wait_on_all_pages(sbi, F2FS_WB_CP_DATA);
1509 /* flush all device cache */
1510 err = f2fs_flush_device_cache(sbi);
1514 /* barrier and flush checkpoint cp pack 2 page if it can */
1515 commit_checkpoint(sbi, ckpt, start_blk);
1516 f2fs_wait_on_all_pages(sbi, F2FS_WB_CP_DATA);
1519 * invalidate intermediate page cache borrowed from meta inode which are
1520 * used for migration of encrypted, verity or compressed inode's blocks.
1522 if (f2fs_sb_has_encrypt(sbi) || f2fs_sb_has_verity(sbi) ||
1523 f2fs_sb_has_compression(sbi))
1524 invalidate_mapping_pages(META_MAPPING(sbi),
1525 MAIN_BLKADDR(sbi), MAX_BLKADDR(sbi) - 1);
1527 f2fs_release_ino_entry(sbi, false);
1529 f2fs_reset_fsync_node_info(sbi);
1531 clear_sbi_flag(sbi, SBI_IS_DIRTY);
1532 clear_sbi_flag(sbi, SBI_NEED_CP);
1533 clear_sbi_flag(sbi, SBI_QUOTA_SKIP_FLUSH);
1535 spin_lock(&sbi->stat_lock);
1536 sbi->unusable_block_count = 0;
1537 spin_unlock(&sbi->stat_lock);
1539 __set_cp_next_pack(sbi);
1542 * redirty superblock if metadata like node page or inode cache is
1543 * updated during writing checkpoint.
1545 if (get_pages(sbi, F2FS_DIRTY_NODES) ||
1546 get_pages(sbi, F2FS_DIRTY_IMETA))
1547 set_sbi_flag(sbi, SBI_IS_DIRTY);
1549 f2fs_bug_on(sbi, get_pages(sbi, F2FS_DIRTY_DENTS));
1551 return unlikely(f2fs_cp_error(sbi)) ? -EIO : 0;
1554 int f2fs_write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
1556 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1557 unsigned long long ckpt_ver;
1560 if (f2fs_readonly(sbi->sb) || f2fs_hw_is_readonly(sbi))
1563 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
1564 if (cpc->reason != CP_PAUSE)
1566 f2fs_warn(sbi, "Start checkpoint disabled!");
1568 if (cpc->reason != CP_RESIZE)
1569 mutex_lock(&sbi->cp_mutex);
1571 if (!is_sbi_flag_set(sbi, SBI_IS_DIRTY) &&
1572 ((cpc->reason & CP_FASTBOOT) || (cpc->reason & CP_SYNC) ||
1573 ((cpc->reason & CP_DISCARD) && !sbi->discard_blks)))
1575 if (unlikely(f2fs_cp_error(sbi))) {
1580 trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "start block_ops");
1582 err = block_operations(sbi);
1586 trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "finish block_ops");
1588 f2fs_flush_merged_writes(sbi);
1590 /* this is the case of multiple fstrims without any changes */
1591 if (cpc->reason & CP_DISCARD) {
1592 if (!f2fs_exist_trim_candidates(sbi, cpc)) {
1593 unblock_operations(sbi);
1597 if (NM_I(sbi)->dirty_nat_cnt == 0 &&
1598 SIT_I(sbi)->dirty_sentries == 0 &&
1599 prefree_segments(sbi) == 0) {
1600 f2fs_flush_sit_entries(sbi, cpc);
1601 f2fs_clear_prefree_segments(sbi, cpc);
1602 unblock_operations(sbi);
1608 * update checkpoint pack index
1609 * Increase the version number so that
1610 * SIT entries and seg summaries are written at correct place
1612 ckpt_ver = cur_cp_version(ckpt);
1613 ckpt->checkpoint_ver = cpu_to_le64(++ckpt_ver);
1615 /* write cached NAT/SIT entries to NAT/SIT area */
1616 err = f2fs_flush_nat_entries(sbi, cpc);
1620 f2fs_flush_sit_entries(sbi, cpc);
1622 err = do_checkpoint(sbi, cpc);
1624 f2fs_release_discard_addrs(sbi);
1626 f2fs_clear_prefree_segments(sbi, cpc);
1628 unblock_operations(sbi);
1629 stat_inc_cp_count(sbi->stat_info);
1631 if (cpc->reason & CP_RECOVERY)
1632 f2fs_notice(sbi, "checkpoint: version = %llx", ckpt_ver);
1634 /* update CP_TIME to trigger checkpoint periodically */
1635 f2fs_update_time(sbi, CP_TIME);
1636 trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "finish checkpoint");
1638 if (cpc->reason != CP_RESIZE)
1639 mutex_unlock(&sbi->cp_mutex);
1643 void f2fs_init_ino_entry_info(struct f2fs_sb_info *sbi)
1647 for (i = 0; i < MAX_INO_ENTRY; i++) {
1648 struct inode_management *im = &sbi->im[i];
1650 INIT_RADIX_TREE(&im->ino_root, GFP_ATOMIC);
1651 spin_lock_init(&im->ino_lock);
1652 INIT_LIST_HEAD(&im->ino_list);
1656 sbi->max_orphans = (sbi->blocks_per_seg - F2FS_CP_PACKS -
1657 NR_CURSEG_TYPE - __cp_payload(sbi)) *
1658 F2FS_ORPHANS_PER_BLOCK;
1661 int __init f2fs_create_checkpoint_caches(void)
1663 ino_entry_slab = f2fs_kmem_cache_create("f2fs_ino_entry",
1664 sizeof(struct ino_entry));
1665 if (!ino_entry_slab)
1667 f2fs_inode_entry_slab = f2fs_kmem_cache_create("f2fs_inode_entry",
1668 sizeof(struct inode_entry));
1669 if (!f2fs_inode_entry_slab) {
1670 kmem_cache_destroy(ino_entry_slab);
1676 void f2fs_destroy_checkpoint_caches(void)
1678 kmem_cache_destroy(ino_entry_slab);
1679 kmem_cache_destroy(f2fs_inode_entry_slab);