1 // SPDX-License-Identifier: GPL-2.0
5 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
6 * http://www.samsung.com/
9 #include <linux/f2fs_fs.h>
10 #include <linux/bio.h>
11 #include <linux/blkdev.h>
12 #include <linux/prefetch.h>
13 #include <linux/kthread.h>
14 #include <linux/swap.h>
15 #include <linux/timer.h>
16 #include <linux/freezer.h>
17 #include <linux/sched/signal.h>
23 #include <trace/events/f2fs.h>
25 #define __reverse_ffz(x) __reverse_ffs(~(x))
27 static struct kmem_cache *discard_entry_slab;
28 static struct kmem_cache *discard_cmd_slab;
29 static struct kmem_cache *sit_entry_set_slab;
30 static struct kmem_cache *inmem_entry_slab;
32 static unsigned long __reverse_ulong(unsigned char *str)
34 unsigned long tmp = 0;
35 int shift = 24, idx = 0;
37 #if BITS_PER_LONG == 64
41 tmp |= (unsigned long)str[idx++] << shift;
42 shift -= BITS_PER_BYTE;
48 * __reverse_ffs is copied from include/asm-generic/bitops/__ffs.h since
49 * MSB and LSB are reversed in a byte by f2fs_set_bit.
51 static inline unsigned long __reverse_ffs(unsigned long word)
55 #if BITS_PER_LONG == 64
56 if ((word & 0xffffffff00000000UL) == 0)
61 if ((word & 0xffff0000) == 0)
66 if ((word & 0xff00) == 0)
71 if ((word & 0xf0) == 0)
76 if ((word & 0xc) == 0)
81 if ((word & 0x2) == 0)
87 * __find_rev_next(_zero)_bit is copied from lib/find_next_bit.c because
88 * f2fs_set_bit makes MSB and LSB reversed in a byte.
89 * @size must be integral times of unsigned long.
92 * f2fs_set_bit(0, bitmap) => 1000 0000
93 * f2fs_set_bit(7, bitmap) => 0000 0001
95 static unsigned long __find_rev_next_bit(const unsigned long *addr,
96 unsigned long size, unsigned long offset)
98 const unsigned long *p = addr + BIT_WORD(offset);
99 unsigned long result = size;
105 size -= (offset & ~(BITS_PER_LONG - 1));
106 offset %= BITS_PER_LONG;
112 tmp = __reverse_ulong((unsigned char *)p);
114 tmp &= ~0UL >> offset;
115 if (size < BITS_PER_LONG)
116 tmp &= (~0UL << (BITS_PER_LONG - size));
120 if (size <= BITS_PER_LONG)
122 size -= BITS_PER_LONG;
128 return result - size + __reverse_ffs(tmp);
131 static unsigned long __find_rev_next_zero_bit(const unsigned long *addr,
132 unsigned long size, unsigned long offset)
134 const unsigned long *p = addr + BIT_WORD(offset);
135 unsigned long result = size;
141 size -= (offset & ~(BITS_PER_LONG - 1));
142 offset %= BITS_PER_LONG;
148 tmp = __reverse_ulong((unsigned char *)p);
151 tmp |= ~0UL << (BITS_PER_LONG - offset);
152 if (size < BITS_PER_LONG)
157 if (size <= BITS_PER_LONG)
159 size -= BITS_PER_LONG;
165 return result - size + __reverse_ffz(tmp);
168 bool f2fs_need_SSR(struct f2fs_sb_info *sbi)
170 int node_secs = get_blocktype_secs(sbi, F2FS_DIRTY_NODES);
171 int dent_secs = get_blocktype_secs(sbi, F2FS_DIRTY_DENTS);
172 int imeta_secs = get_blocktype_secs(sbi, F2FS_DIRTY_IMETA);
174 if (f2fs_lfs_mode(sbi))
176 if (sbi->gc_mode == GC_URGENT_HIGH)
178 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
181 return free_sections(sbi) <= (node_secs + 2 * dent_secs + imeta_secs +
182 SM_I(sbi)->min_ssr_sections + reserved_sections(sbi));
185 void f2fs_register_inmem_page(struct inode *inode, struct page *page)
187 struct inmem_pages *new;
189 f2fs_set_page_private(page, ATOMIC_WRITTEN_PAGE);
191 new = f2fs_kmem_cache_alloc(inmem_entry_slab, GFP_NOFS);
193 /* add atomic page indices to the list */
195 INIT_LIST_HEAD(&new->list);
197 /* increase reference count with clean state */
199 mutex_lock(&F2FS_I(inode)->inmem_lock);
200 list_add_tail(&new->list, &F2FS_I(inode)->inmem_pages);
201 inc_page_count(F2FS_I_SB(inode), F2FS_INMEM_PAGES);
202 mutex_unlock(&F2FS_I(inode)->inmem_lock);
204 trace_f2fs_register_inmem_page(page, INMEM);
207 static int __revoke_inmem_pages(struct inode *inode,
208 struct list_head *head, bool drop, bool recover,
211 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
212 struct inmem_pages *cur, *tmp;
215 list_for_each_entry_safe(cur, tmp, head, list) {
216 struct page *page = cur->page;
219 trace_f2fs_commit_inmem_page(page, INMEM_DROP);
223 * to avoid deadlock in between page lock and
226 if (!trylock_page(page))
232 f2fs_wait_on_page_writeback(page, DATA, true, true);
235 struct dnode_of_data dn;
238 trace_f2fs_commit_inmem_page(page, INMEM_REVOKE);
240 set_new_dnode(&dn, inode, NULL, NULL, 0);
241 err = f2fs_get_dnode_of_data(&dn, page->index,
244 if (err == -ENOMEM) {
245 congestion_wait(BLK_RW_ASYNC,
254 err = f2fs_get_node_info(sbi, dn.nid, &ni);
260 if (cur->old_addr == NEW_ADDR) {
261 f2fs_invalidate_blocks(sbi, dn.data_blkaddr);
262 f2fs_update_data_blkaddr(&dn, NEW_ADDR);
264 f2fs_replace_block(sbi, &dn, dn.data_blkaddr,
265 cur->old_addr, ni.version, true, true);
269 /* we don't need to invalidate this in the sccessful status */
270 if (drop || recover) {
271 ClearPageUptodate(page);
272 clear_cold_data(page);
274 f2fs_clear_page_private(page);
275 f2fs_put_page(page, 1);
277 list_del(&cur->list);
278 kmem_cache_free(inmem_entry_slab, cur);
279 dec_page_count(F2FS_I_SB(inode), F2FS_INMEM_PAGES);
284 void f2fs_drop_inmem_pages_all(struct f2fs_sb_info *sbi, bool gc_failure)
286 struct list_head *head = &sbi->inode_list[ATOMIC_FILE];
288 struct f2fs_inode_info *fi;
289 unsigned int count = sbi->atomic_files;
290 unsigned int looped = 0;
292 spin_lock(&sbi->inode_lock[ATOMIC_FILE]);
293 if (list_empty(head)) {
294 spin_unlock(&sbi->inode_lock[ATOMIC_FILE]);
297 fi = list_first_entry(head, struct f2fs_inode_info, inmem_ilist);
298 inode = igrab(&fi->vfs_inode);
300 list_move_tail(&fi->inmem_ilist, head);
301 spin_unlock(&sbi->inode_lock[ATOMIC_FILE]);
305 if (!fi->i_gc_failures[GC_FAILURE_ATOMIC])
308 set_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST);
309 f2fs_drop_inmem_pages(inode);
313 congestion_wait(BLK_RW_ASYNC, DEFAULT_IO_TIMEOUT);
316 if (++looped >= count)
322 void f2fs_drop_inmem_pages(struct inode *inode)
324 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
325 struct f2fs_inode_info *fi = F2FS_I(inode);
327 while (!list_empty(&fi->inmem_pages)) {
328 mutex_lock(&fi->inmem_lock);
329 __revoke_inmem_pages(inode, &fi->inmem_pages,
331 mutex_unlock(&fi->inmem_lock);
334 fi->i_gc_failures[GC_FAILURE_ATOMIC] = 0;
336 spin_lock(&sbi->inode_lock[ATOMIC_FILE]);
337 if (!list_empty(&fi->inmem_ilist))
338 list_del_init(&fi->inmem_ilist);
339 if (f2fs_is_atomic_file(inode)) {
340 clear_inode_flag(inode, FI_ATOMIC_FILE);
343 spin_unlock(&sbi->inode_lock[ATOMIC_FILE]);
346 void f2fs_drop_inmem_page(struct inode *inode, struct page *page)
348 struct f2fs_inode_info *fi = F2FS_I(inode);
349 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
350 struct list_head *head = &fi->inmem_pages;
351 struct inmem_pages *cur = NULL;
353 f2fs_bug_on(sbi, !IS_ATOMIC_WRITTEN_PAGE(page));
355 mutex_lock(&fi->inmem_lock);
356 list_for_each_entry(cur, head, list) {
357 if (cur->page == page)
361 f2fs_bug_on(sbi, list_empty(head) || cur->page != page);
362 list_del(&cur->list);
363 mutex_unlock(&fi->inmem_lock);
365 dec_page_count(sbi, F2FS_INMEM_PAGES);
366 kmem_cache_free(inmem_entry_slab, cur);
368 ClearPageUptodate(page);
369 f2fs_clear_page_private(page);
370 f2fs_put_page(page, 0);
372 trace_f2fs_commit_inmem_page(page, INMEM_INVALIDATE);
375 static int __f2fs_commit_inmem_pages(struct inode *inode)
377 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
378 struct f2fs_inode_info *fi = F2FS_I(inode);
379 struct inmem_pages *cur, *tmp;
380 struct f2fs_io_info fio = {
385 .op_flags = REQ_SYNC | REQ_PRIO,
386 .io_type = FS_DATA_IO,
388 struct list_head revoke_list;
389 bool submit_bio = false;
392 INIT_LIST_HEAD(&revoke_list);
394 list_for_each_entry_safe(cur, tmp, &fi->inmem_pages, list) {
395 struct page *page = cur->page;
398 if (page->mapping == inode->i_mapping) {
399 trace_f2fs_commit_inmem_page(page, INMEM);
401 f2fs_wait_on_page_writeback(page, DATA, true, true);
403 set_page_dirty(page);
404 if (clear_page_dirty_for_io(page)) {
405 inode_dec_dirty_pages(inode);
406 f2fs_remove_dirty_inode(inode);
410 fio.old_blkaddr = NULL_ADDR;
411 fio.encrypted_page = NULL;
412 fio.need_lock = LOCK_DONE;
413 err = f2fs_do_write_data_page(&fio);
415 if (err == -ENOMEM) {
416 congestion_wait(BLK_RW_ASYNC,
424 /* record old blkaddr for revoking */
425 cur->old_addr = fio.old_blkaddr;
429 list_move_tail(&cur->list, &revoke_list);
433 f2fs_submit_merged_write_cond(sbi, inode, NULL, 0, DATA);
437 * try to revoke all committed pages, but still we could fail
438 * due to no memory or other reason, if that happened, EAGAIN
439 * will be returned, which means in such case, transaction is
440 * already not integrity, caller should use journal to do the
441 * recovery or rewrite & commit last transaction. For other
442 * error number, revoking was done by filesystem itself.
444 err = __revoke_inmem_pages(inode, &revoke_list,
447 /* drop all uncommitted pages */
448 __revoke_inmem_pages(inode, &fi->inmem_pages,
451 __revoke_inmem_pages(inode, &revoke_list,
452 false, false, false);
458 int f2fs_commit_inmem_pages(struct inode *inode)
460 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
461 struct f2fs_inode_info *fi = F2FS_I(inode);
464 f2fs_balance_fs(sbi, true);
466 down_write(&fi->i_gc_rwsem[WRITE]);
469 set_inode_flag(inode, FI_ATOMIC_COMMIT);
471 mutex_lock(&fi->inmem_lock);
472 err = __f2fs_commit_inmem_pages(inode);
473 mutex_unlock(&fi->inmem_lock);
475 clear_inode_flag(inode, FI_ATOMIC_COMMIT);
478 up_write(&fi->i_gc_rwsem[WRITE]);
484 * This function balances dirty node and dentry pages.
485 * In addition, it controls garbage collection.
487 void f2fs_balance_fs(struct f2fs_sb_info *sbi, bool need)
489 if (time_to_inject(sbi, FAULT_CHECKPOINT)) {
490 f2fs_show_injection_info(sbi, FAULT_CHECKPOINT);
491 f2fs_stop_checkpoint(sbi, false);
494 /* balance_fs_bg is able to be pending */
495 if (need && excess_cached_nats(sbi))
496 f2fs_balance_fs_bg(sbi, false);
498 if (!f2fs_is_checkpoint_ready(sbi))
502 * We should do GC or end up with checkpoint, if there are so many dirty
503 * dir/node pages without enough free segments.
505 if (has_not_enough_free_secs(sbi, 0, 0)) {
506 down_write(&sbi->gc_lock);
507 f2fs_gc(sbi, false, false, NULL_SEGNO);
511 void f2fs_balance_fs_bg(struct f2fs_sb_info *sbi, bool from_bg)
513 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
516 /* try to shrink extent cache when there is no enough memory */
517 if (!f2fs_available_free_memory(sbi, EXTENT_CACHE))
518 f2fs_shrink_extent_tree(sbi, EXTENT_CACHE_SHRINK_NUMBER);
520 /* check the # of cached NAT entries */
521 if (!f2fs_available_free_memory(sbi, NAT_ENTRIES))
522 f2fs_try_to_free_nats(sbi, NAT_ENTRY_PER_BLOCK);
524 if (!f2fs_available_free_memory(sbi, FREE_NIDS))
525 f2fs_try_to_free_nids(sbi, MAX_FREE_NIDS);
527 f2fs_build_free_nids(sbi, false, false);
529 if (excess_dirty_nats(sbi) || excess_dirty_nodes(sbi) ||
530 excess_prefree_segs(sbi))
533 /* there is background inflight IO or foreground operation recently */
534 if (is_inflight_io(sbi, REQ_TIME) ||
535 (!f2fs_time_over(sbi, REQ_TIME) && rwsem_is_locked(&sbi->cp_rwsem)))
538 /* exceed periodical checkpoint timeout threshold */
539 if (f2fs_time_over(sbi, CP_TIME))
542 /* checkpoint is the only way to shrink partial cached entries */
543 if (f2fs_available_free_memory(sbi, NAT_ENTRIES) ||
544 f2fs_available_free_memory(sbi, INO_ENTRIES))
548 if (test_opt(sbi, DATA_FLUSH) && from_bg) {
549 struct blk_plug plug;
551 mutex_lock(&sbi->flush_lock);
553 blk_start_plug(&plug);
554 f2fs_sync_dirty_inodes(sbi, FILE_INODE);
555 blk_finish_plug(&plug);
557 mutex_unlock(&sbi->flush_lock);
559 f2fs_sync_fs(sbi->sb, true);
560 stat_inc_bg_cp_count(sbi->stat_info);
563 static int __submit_flush_wait(struct f2fs_sb_info *sbi,
564 struct block_device *bdev)
566 int ret = blkdev_issue_flush(bdev);
568 trace_f2fs_issue_flush(bdev, test_opt(sbi, NOBARRIER),
569 test_opt(sbi, FLUSH_MERGE), ret);
573 static int submit_flush_wait(struct f2fs_sb_info *sbi, nid_t ino)
578 if (!f2fs_is_multi_device(sbi))
579 return __submit_flush_wait(sbi, sbi->sb->s_bdev);
581 for (i = 0; i < sbi->s_ndevs; i++) {
582 if (!f2fs_is_dirty_device(sbi, ino, i, FLUSH_INO))
584 ret = __submit_flush_wait(sbi, FDEV(i).bdev);
591 static int issue_flush_thread(void *data)
593 struct f2fs_sb_info *sbi = data;
594 struct flush_cmd_control *fcc = SM_I(sbi)->fcc_info;
595 wait_queue_head_t *q = &fcc->flush_wait_queue;
597 if (kthread_should_stop())
600 if (!llist_empty(&fcc->issue_list)) {
601 struct flush_cmd *cmd, *next;
604 fcc->dispatch_list = llist_del_all(&fcc->issue_list);
605 fcc->dispatch_list = llist_reverse_order(fcc->dispatch_list);
607 cmd = llist_entry(fcc->dispatch_list, struct flush_cmd, llnode);
609 ret = submit_flush_wait(sbi, cmd->ino);
610 atomic_inc(&fcc->issued_flush);
612 llist_for_each_entry_safe(cmd, next,
613 fcc->dispatch_list, llnode) {
615 complete(&cmd->wait);
617 fcc->dispatch_list = NULL;
620 wait_event_interruptible(*q,
621 kthread_should_stop() || !llist_empty(&fcc->issue_list));
625 int f2fs_issue_flush(struct f2fs_sb_info *sbi, nid_t ino)
627 struct flush_cmd_control *fcc = SM_I(sbi)->fcc_info;
628 struct flush_cmd cmd;
631 if (test_opt(sbi, NOBARRIER))
634 if (!test_opt(sbi, FLUSH_MERGE)) {
635 atomic_inc(&fcc->queued_flush);
636 ret = submit_flush_wait(sbi, ino);
637 atomic_dec(&fcc->queued_flush);
638 atomic_inc(&fcc->issued_flush);
642 if (atomic_inc_return(&fcc->queued_flush) == 1 ||
643 f2fs_is_multi_device(sbi)) {
644 ret = submit_flush_wait(sbi, ino);
645 atomic_dec(&fcc->queued_flush);
647 atomic_inc(&fcc->issued_flush);
652 init_completion(&cmd.wait);
654 llist_add(&cmd.llnode, &fcc->issue_list);
656 /* update issue_list before we wake up issue_flush thread */
659 if (waitqueue_active(&fcc->flush_wait_queue))
660 wake_up(&fcc->flush_wait_queue);
662 if (fcc->f2fs_issue_flush) {
663 wait_for_completion(&cmd.wait);
664 atomic_dec(&fcc->queued_flush);
666 struct llist_node *list;
668 list = llist_del_all(&fcc->issue_list);
670 wait_for_completion(&cmd.wait);
671 atomic_dec(&fcc->queued_flush);
673 struct flush_cmd *tmp, *next;
675 ret = submit_flush_wait(sbi, ino);
677 llist_for_each_entry_safe(tmp, next, list, llnode) {
680 atomic_dec(&fcc->queued_flush);
684 complete(&tmp->wait);
692 int f2fs_create_flush_cmd_control(struct f2fs_sb_info *sbi)
694 dev_t dev = sbi->sb->s_bdev->bd_dev;
695 struct flush_cmd_control *fcc;
698 if (SM_I(sbi)->fcc_info) {
699 fcc = SM_I(sbi)->fcc_info;
700 if (fcc->f2fs_issue_flush)
705 fcc = f2fs_kzalloc(sbi, sizeof(struct flush_cmd_control), GFP_KERNEL);
708 atomic_set(&fcc->issued_flush, 0);
709 atomic_set(&fcc->queued_flush, 0);
710 init_waitqueue_head(&fcc->flush_wait_queue);
711 init_llist_head(&fcc->issue_list);
712 SM_I(sbi)->fcc_info = fcc;
713 if (!test_opt(sbi, FLUSH_MERGE))
717 fcc->f2fs_issue_flush = kthread_run(issue_flush_thread, sbi,
718 "f2fs_flush-%u:%u", MAJOR(dev), MINOR(dev));
719 if (IS_ERR(fcc->f2fs_issue_flush)) {
720 err = PTR_ERR(fcc->f2fs_issue_flush);
722 SM_I(sbi)->fcc_info = NULL;
729 void f2fs_destroy_flush_cmd_control(struct f2fs_sb_info *sbi, bool free)
731 struct flush_cmd_control *fcc = SM_I(sbi)->fcc_info;
733 if (fcc && fcc->f2fs_issue_flush) {
734 struct task_struct *flush_thread = fcc->f2fs_issue_flush;
736 fcc->f2fs_issue_flush = NULL;
737 kthread_stop(flush_thread);
741 SM_I(sbi)->fcc_info = NULL;
745 int f2fs_flush_device_cache(struct f2fs_sb_info *sbi)
749 if (!f2fs_is_multi_device(sbi))
752 if (test_opt(sbi, NOBARRIER))
755 for (i = 1; i < sbi->s_ndevs; i++) {
756 if (!f2fs_test_bit(i, (char *)&sbi->dirty_device))
758 ret = __submit_flush_wait(sbi, FDEV(i).bdev);
762 spin_lock(&sbi->dev_lock);
763 f2fs_clear_bit(i, (char *)&sbi->dirty_device);
764 spin_unlock(&sbi->dev_lock);
770 static void __locate_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno,
771 enum dirty_type dirty_type)
773 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
775 /* need not be added */
776 if (IS_CURSEG(sbi, segno))
779 if (!test_and_set_bit(segno, dirty_i->dirty_segmap[dirty_type]))
780 dirty_i->nr_dirty[dirty_type]++;
782 if (dirty_type == DIRTY) {
783 struct seg_entry *sentry = get_seg_entry(sbi, segno);
784 enum dirty_type t = sentry->type;
786 if (unlikely(t >= DIRTY)) {
790 if (!test_and_set_bit(segno, dirty_i->dirty_segmap[t]))
791 dirty_i->nr_dirty[t]++;
793 if (__is_large_section(sbi)) {
794 unsigned int secno = GET_SEC_FROM_SEG(sbi, segno);
795 block_t valid_blocks =
796 get_valid_blocks(sbi, segno, true);
798 f2fs_bug_on(sbi, unlikely(!valid_blocks ||
799 valid_blocks == BLKS_PER_SEC(sbi)));
801 if (!IS_CURSEC(sbi, secno))
802 set_bit(secno, dirty_i->dirty_secmap);
807 static void __remove_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno,
808 enum dirty_type dirty_type)
810 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
811 block_t valid_blocks;
813 if (test_and_clear_bit(segno, dirty_i->dirty_segmap[dirty_type]))
814 dirty_i->nr_dirty[dirty_type]--;
816 if (dirty_type == DIRTY) {
817 struct seg_entry *sentry = get_seg_entry(sbi, segno);
818 enum dirty_type t = sentry->type;
820 if (test_and_clear_bit(segno, dirty_i->dirty_segmap[t]))
821 dirty_i->nr_dirty[t]--;
823 valid_blocks = get_valid_blocks(sbi, segno, true);
824 if (valid_blocks == 0) {
825 clear_bit(GET_SEC_FROM_SEG(sbi, segno),
826 dirty_i->victim_secmap);
827 #ifdef CONFIG_F2FS_CHECK_FS
828 clear_bit(segno, SIT_I(sbi)->invalid_segmap);
831 if (__is_large_section(sbi)) {
832 unsigned int secno = GET_SEC_FROM_SEG(sbi, segno);
835 valid_blocks == BLKS_PER_SEC(sbi)) {
836 clear_bit(secno, dirty_i->dirty_secmap);
840 if (!IS_CURSEC(sbi, secno))
841 set_bit(secno, dirty_i->dirty_secmap);
847 * Should not occur error such as -ENOMEM.
848 * Adding dirty entry into seglist is not critical operation.
849 * If a given segment is one of current working segments, it won't be added.
851 static void locate_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno)
853 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
854 unsigned short valid_blocks, ckpt_valid_blocks;
855 unsigned int usable_blocks;
857 if (segno == NULL_SEGNO || IS_CURSEG(sbi, segno))
860 usable_blocks = f2fs_usable_blks_in_seg(sbi, segno);
861 mutex_lock(&dirty_i->seglist_lock);
863 valid_blocks = get_valid_blocks(sbi, segno, false);
864 ckpt_valid_blocks = get_ckpt_valid_blocks(sbi, segno);
866 if (valid_blocks == 0 && (!is_sbi_flag_set(sbi, SBI_CP_DISABLED) ||
867 ckpt_valid_blocks == usable_blocks)) {
868 __locate_dirty_segment(sbi, segno, PRE);
869 __remove_dirty_segment(sbi, segno, DIRTY);
870 } else if (valid_blocks < usable_blocks) {
871 __locate_dirty_segment(sbi, segno, DIRTY);
873 /* Recovery routine with SSR needs this */
874 __remove_dirty_segment(sbi, segno, DIRTY);
877 mutex_unlock(&dirty_i->seglist_lock);
880 /* This moves currently empty dirty blocks to prefree. Must hold seglist_lock */
881 void f2fs_dirty_to_prefree(struct f2fs_sb_info *sbi)
883 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
886 mutex_lock(&dirty_i->seglist_lock);
887 for_each_set_bit(segno, dirty_i->dirty_segmap[DIRTY], MAIN_SEGS(sbi)) {
888 if (get_valid_blocks(sbi, segno, false))
890 if (IS_CURSEG(sbi, segno))
892 __locate_dirty_segment(sbi, segno, PRE);
893 __remove_dirty_segment(sbi, segno, DIRTY);
895 mutex_unlock(&dirty_i->seglist_lock);
898 block_t f2fs_get_unusable_blocks(struct f2fs_sb_info *sbi)
901 (overprovision_segments(sbi) - reserved_segments(sbi));
902 block_t ovp_holes = ovp_hole_segs << sbi->log_blocks_per_seg;
903 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
904 block_t holes[2] = {0, 0}; /* DATA and NODE */
906 struct seg_entry *se;
909 mutex_lock(&dirty_i->seglist_lock);
910 for_each_set_bit(segno, dirty_i->dirty_segmap[DIRTY], MAIN_SEGS(sbi)) {
911 se = get_seg_entry(sbi, segno);
912 if (IS_NODESEG(se->type))
913 holes[NODE] += f2fs_usable_blks_in_seg(sbi, segno) -
916 holes[DATA] += f2fs_usable_blks_in_seg(sbi, segno) -
919 mutex_unlock(&dirty_i->seglist_lock);
921 unusable = holes[DATA] > holes[NODE] ? holes[DATA] : holes[NODE];
922 if (unusable > ovp_holes)
923 return unusable - ovp_holes;
927 int f2fs_disable_cp_again(struct f2fs_sb_info *sbi, block_t unusable)
930 (overprovision_segments(sbi) - reserved_segments(sbi));
931 if (unusable > F2FS_OPTION(sbi).unusable_cap)
933 if (is_sbi_flag_set(sbi, SBI_CP_DISABLED_QUICK) &&
934 dirty_segments(sbi) > ovp_hole_segs)
939 /* This is only used by SBI_CP_DISABLED */
940 static unsigned int get_free_segment(struct f2fs_sb_info *sbi)
942 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
943 unsigned int segno = 0;
945 mutex_lock(&dirty_i->seglist_lock);
946 for_each_set_bit(segno, dirty_i->dirty_segmap[DIRTY], MAIN_SEGS(sbi)) {
947 if (get_valid_blocks(sbi, segno, false))
949 if (get_ckpt_valid_blocks(sbi, segno))
951 mutex_unlock(&dirty_i->seglist_lock);
954 mutex_unlock(&dirty_i->seglist_lock);
958 static struct discard_cmd *__create_discard_cmd(struct f2fs_sb_info *sbi,
959 struct block_device *bdev, block_t lstart,
960 block_t start, block_t len)
962 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
963 struct list_head *pend_list;
964 struct discard_cmd *dc;
966 f2fs_bug_on(sbi, !len);
968 pend_list = &dcc->pend_list[plist_idx(len)];
970 dc = f2fs_kmem_cache_alloc(discard_cmd_slab, GFP_NOFS);
971 INIT_LIST_HEAD(&dc->list);
980 init_completion(&dc->wait);
981 list_add_tail(&dc->list, pend_list);
982 spin_lock_init(&dc->lock);
984 atomic_inc(&dcc->discard_cmd_cnt);
985 dcc->undiscard_blks += len;
990 static struct discard_cmd *__attach_discard_cmd(struct f2fs_sb_info *sbi,
991 struct block_device *bdev, block_t lstart,
992 block_t start, block_t len,
993 struct rb_node *parent, struct rb_node **p,
996 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
997 struct discard_cmd *dc;
999 dc = __create_discard_cmd(sbi, bdev, lstart, start, len);
1001 rb_link_node(&dc->rb_node, parent, p);
1002 rb_insert_color_cached(&dc->rb_node, &dcc->root, leftmost);
1007 static void __detach_discard_cmd(struct discard_cmd_control *dcc,
1008 struct discard_cmd *dc)
1010 if (dc->state == D_DONE)
1011 atomic_sub(dc->queued, &dcc->queued_discard);
1013 list_del(&dc->list);
1014 rb_erase_cached(&dc->rb_node, &dcc->root);
1015 dcc->undiscard_blks -= dc->len;
1017 kmem_cache_free(discard_cmd_slab, dc);
1019 atomic_dec(&dcc->discard_cmd_cnt);
1022 static void __remove_discard_cmd(struct f2fs_sb_info *sbi,
1023 struct discard_cmd *dc)
1025 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1026 unsigned long flags;
1028 trace_f2fs_remove_discard(dc->bdev, dc->start, dc->len);
1030 spin_lock_irqsave(&dc->lock, flags);
1032 spin_unlock_irqrestore(&dc->lock, flags);
1035 spin_unlock_irqrestore(&dc->lock, flags);
1037 f2fs_bug_on(sbi, dc->ref);
1039 if (dc->error == -EOPNOTSUPP)
1044 "%sF2FS-fs (%s): Issue discard(%u, %u, %u) failed, ret: %d",
1045 KERN_INFO, sbi->sb->s_id,
1046 dc->lstart, dc->start, dc->len, dc->error);
1047 __detach_discard_cmd(dcc, dc);
1050 static void f2fs_submit_discard_endio(struct bio *bio)
1052 struct discard_cmd *dc = (struct discard_cmd *)bio->bi_private;
1053 unsigned long flags;
1055 spin_lock_irqsave(&dc->lock, flags);
1057 dc->error = blk_status_to_errno(bio->bi_status);
1059 if (!dc->bio_ref && dc->state == D_SUBMIT) {
1061 complete_all(&dc->wait);
1063 spin_unlock_irqrestore(&dc->lock, flags);
1067 static void __check_sit_bitmap(struct f2fs_sb_info *sbi,
1068 block_t start, block_t end)
1070 #ifdef CONFIG_F2FS_CHECK_FS
1071 struct seg_entry *sentry;
1073 block_t blk = start;
1074 unsigned long offset, size, max_blocks = sbi->blocks_per_seg;
1078 segno = GET_SEGNO(sbi, blk);
1079 sentry = get_seg_entry(sbi, segno);
1080 offset = GET_BLKOFF_FROM_SEG0(sbi, blk);
1082 if (end < START_BLOCK(sbi, segno + 1))
1083 size = GET_BLKOFF_FROM_SEG0(sbi, end);
1086 map = (unsigned long *)(sentry->cur_valid_map);
1087 offset = __find_rev_next_bit(map, size, offset);
1088 f2fs_bug_on(sbi, offset != size);
1089 blk = START_BLOCK(sbi, segno + 1);
1094 static void __init_discard_policy(struct f2fs_sb_info *sbi,
1095 struct discard_policy *dpolicy,
1096 int discard_type, unsigned int granularity)
1099 dpolicy->type = discard_type;
1100 dpolicy->sync = true;
1101 dpolicy->ordered = false;
1102 dpolicy->granularity = granularity;
1104 dpolicy->max_requests = DEF_MAX_DISCARD_REQUEST;
1105 dpolicy->io_aware_gran = MAX_PLIST_NUM;
1106 dpolicy->timeout = false;
1108 if (discard_type == DPOLICY_BG) {
1109 dpolicy->min_interval = DEF_MIN_DISCARD_ISSUE_TIME;
1110 dpolicy->mid_interval = DEF_MID_DISCARD_ISSUE_TIME;
1111 dpolicy->max_interval = DEF_MAX_DISCARD_ISSUE_TIME;
1112 dpolicy->io_aware = true;
1113 dpolicy->sync = false;
1114 dpolicy->ordered = true;
1115 if (utilization(sbi) > DEF_DISCARD_URGENT_UTIL) {
1116 dpolicy->granularity = 1;
1117 dpolicy->max_interval = DEF_MIN_DISCARD_ISSUE_TIME;
1119 } else if (discard_type == DPOLICY_FORCE) {
1120 dpolicy->min_interval = DEF_MIN_DISCARD_ISSUE_TIME;
1121 dpolicy->mid_interval = DEF_MID_DISCARD_ISSUE_TIME;
1122 dpolicy->max_interval = DEF_MAX_DISCARD_ISSUE_TIME;
1123 dpolicy->io_aware = false;
1124 } else if (discard_type == DPOLICY_FSTRIM) {
1125 dpolicy->io_aware = false;
1126 } else if (discard_type == DPOLICY_UMOUNT) {
1127 dpolicy->io_aware = false;
1128 /* we need to issue all to keep CP_TRIMMED_FLAG */
1129 dpolicy->granularity = 1;
1130 dpolicy->timeout = true;
1134 static void __update_discard_tree_range(struct f2fs_sb_info *sbi,
1135 struct block_device *bdev, block_t lstart,
1136 block_t start, block_t len);
1137 /* this function is copied from blkdev_issue_discard from block/blk-lib.c */
1138 static int __submit_discard_cmd(struct f2fs_sb_info *sbi,
1139 struct discard_policy *dpolicy,
1140 struct discard_cmd *dc,
1141 unsigned int *issued)
1143 struct block_device *bdev = dc->bdev;
1144 struct request_queue *q = bdev_get_queue(bdev);
1145 unsigned int max_discard_blocks =
1146 SECTOR_TO_BLOCK(q->limits.max_discard_sectors);
1147 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1148 struct list_head *wait_list = (dpolicy->type == DPOLICY_FSTRIM) ?
1149 &(dcc->fstrim_list) : &(dcc->wait_list);
1150 int flag = dpolicy->sync ? REQ_SYNC : 0;
1151 block_t lstart, start, len, total_len;
1154 if (dc->state != D_PREP)
1157 if (is_sbi_flag_set(sbi, SBI_NEED_FSCK))
1160 trace_f2fs_issue_discard(bdev, dc->start, dc->len);
1162 lstart = dc->lstart;
1169 while (total_len && *issued < dpolicy->max_requests && !err) {
1170 struct bio *bio = NULL;
1171 unsigned long flags;
1174 if (len > max_discard_blocks) {
1175 len = max_discard_blocks;
1180 if (*issued == dpolicy->max_requests)
1185 if (time_to_inject(sbi, FAULT_DISCARD)) {
1186 f2fs_show_injection_info(sbi, FAULT_DISCARD);
1190 err = __blkdev_issue_discard(bdev,
1191 SECTOR_FROM_BLOCK(start),
1192 SECTOR_FROM_BLOCK(len),
1196 spin_lock_irqsave(&dc->lock, flags);
1197 if (dc->state == D_PARTIAL)
1198 dc->state = D_SUBMIT;
1199 spin_unlock_irqrestore(&dc->lock, flags);
1204 f2fs_bug_on(sbi, !bio);
1207 * should keep before submission to avoid D_DONE
1210 spin_lock_irqsave(&dc->lock, flags);
1212 dc->state = D_SUBMIT;
1214 dc->state = D_PARTIAL;
1216 spin_unlock_irqrestore(&dc->lock, flags);
1218 atomic_inc(&dcc->queued_discard);
1220 list_move_tail(&dc->list, wait_list);
1222 /* sanity check on discard range */
1223 __check_sit_bitmap(sbi, lstart, lstart + len);
1225 bio->bi_private = dc;
1226 bio->bi_end_io = f2fs_submit_discard_endio;
1227 bio->bi_opf |= flag;
1230 atomic_inc(&dcc->issued_discard);
1232 f2fs_update_iostat(sbi, FS_DISCARD, 1);
1241 dcc->undiscard_blks -= len;
1242 __update_discard_tree_range(sbi, bdev, lstart, start, len);
1247 static void __insert_discard_tree(struct f2fs_sb_info *sbi,
1248 struct block_device *bdev, block_t lstart,
1249 block_t start, block_t len,
1250 struct rb_node **insert_p,
1251 struct rb_node *insert_parent)
1253 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1255 struct rb_node *parent = NULL;
1256 bool leftmost = true;
1258 if (insert_p && insert_parent) {
1259 parent = insert_parent;
1264 p = f2fs_lookup_rb_tree_for_insert(sbi, &dcc->root, &parent,
1267 __attach_discard_cmd(sbi, bdev, lstart, start, len, parent,
1271 static void __relocate_discard_cmd(struct discard_cmd_control *dcc,
1272 struct discard_cmd *dc)
1274 list_move_tail(&dc->list, &dcc->pend_list[plist_idx(dc->len)]);
1277 static void __punch_discard_cmd(struct f2fs_sb_info *sbi,
1278 struct discard_cmd *dc, block_t blkaddr)
1280 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1281 struct discard_info di = dc->di;
1282 bool modified = false;
1284 if (dc->state == D_DONE || dc->len == 1) {
1285 __remove_discard_cmd(sbi, dc);
1289 dcc->undiscard_blks -= di.len;
1291 if (blkaddr > di.lstart) {
1292 dc->len = blkaddr - dc->lstart;
1293 dcc->undiscard_blks += dc->len;
1294 __relocate_discard_cmd(dcc, dc);
1298 if (blkaddr < di.lstart + di.len - 1) {
1300 __insert_discard_tree(sbi, dc->bdev, blkaddr + 1,
1301 di.start + blkaddr + 1 - di.lstart,
1302 di.lstart + di.len - 1 - blkaddr,
1308 dcc->undiscard_blks += dc->len;
1309 __relocate_discard_cmd(dcc, dc);
1314 static void __update_discard_tree_range(struct f2fs_sb_info *sbi,
1315 struct block_device *bdev, block_t lstart,
1316 block_t start, block_t len)
1318 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1319 struct discard_cmd *prev_dc = NULL, *next_dc = NULL;
1320 struct discard_cmd *dc;
1321 struct discard_info di = {0};
1322 struct rb_node **insert_p = NULL, *insert_parent = NULL;
1323 struct request_queue *q = bdev_get_queue(bdev);
1324 unsigned int max_discard_blocks =
1325 SECTOR_TO_BLOCK(q->limits.max_discard_sectors);
1326 block_t end = lstart + len;
1328 dc = (struct discard_cmd *)f2fs_lookup_rb_tree_ret(&dcc->root,
1330 (struct rb_entry **)&prev_dc,
1331 (struct rb_entry **)&next_dc,
1332 &insert_p, &insert_parent, true, NULL);
1338 di.len = next_dc ? next_dc->lstart - lstart : len;
1339 di.len = min(di.len, len);
1344 struct rb_node *node;
1345 bool merged = false;
1346 struct discard_cmd *tdc = NULL;
1349 di.lstart = prev_dc->lstart + prev_dc->len;
1350 if (di.lstart < lstart)
1352 if (di.lstart >= end)
1355 if (!next_dc || next_dc->lstart > end)
1356 di.len = end - di.lstart;
1358 di.len = next_dc->lstart - di.lstart;
1359 di.start = start + di.lstart - lstart;
1365 if (prev_dc && prev_dc->state == D_PREP &&
1366 prev_dc->bdev == bdev &&
1367 __is_discard_back_mergeable(&di, &prev_dc->di,
1368 max_discard_blocks)) {
1369 prev_dc->di.len += di.len;
1370 dcc->undiscard_blks += di.len;
1371 __relocate_discard_cmd(dcc, prev_dc);
1377 if (next_dc && next_dc->state == D_PREP &&
1378 next_dc->bdev == bdev &&
1379 __is_discard_front_mergeable(&di, &next_dc->di,
1380 max_discard_blocks)) {
1381 next_dc->di.lstart = di.lstart;
1382 next_dc->di.len += di.len;
1383 next_dc->di.start = di.start;
1384 dcc->undiscard_blks += di.len;
1385 __relocate_discard_cmd(dcc, next_dc);
1387 __remove_discard_cmd(sbi, tdc);
1392 __insert_discard_tree(sbi, bdev, di.lstart, di.start,
1393 di.len, NULL, NULL);
1400 node = rb_next(&prev_dc->rb_node);
1401 next_dc = rb_entry_safe(node, struct discard_cmd, rb_node);
1405 static int __queue_discard_cmd(struct f2fs_sb_info *sbi,
1406 struct block_device *bdev, block_t blkstart, block_t blklen)
1408 block_t lblkstart = blkstart;
1410 if (!f2fs_bdev_support_discard(bdev))
1413 trace_f2fs_queue_discard(bdev, blkstart, blklen);
1415 if (f2fs_is_multi_device(sbi)) {
1416 int devi = f2fs_target_device_index(sbi, blkstart);
1418 blkstart -= FDEV(devi).start_blk;
1420 mutex_lock(&SM_I(sbi)->dcc_info->cmd_lock);
1421 __update_discard_tree_range(sbi, bdev, lblkstart, blkstart, blklen);
1422 mutex_unlock(&SM_I(sbi)->dcc_info->cmd_lock);
1426 static unsigned int __issue_discard_cmd_orderly(struct f2fs_sb_info *sbi,
1427 struct discard_policy *dpolicy)
1429 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1430 struct discard_cmd *prev_dc = NULL, *next_dc = NULL;
1431 struct rb_node **insert_p = NULL, *insert_parent = NULL;
1432 struct discard_cmd *dc;
1433 struct blk_plug plug;
1434 unsigned int pos = dcc->next_pos;
1435 unsigned int issued = 0;
1436 bool io_interrupted = false;
1438 mutex_lock(&dcc->cmd_lock);
1439 dc = (struct discard_cmd *)f2fs_lookup_rb_tree_ret(&dcc->root,
1441 (struct rb_entry **)&prev_dc,
1442 (struct rb_entry **)&next_dc,
1443 &insert_p, &insert_parent, true, NULL);
1447 blk_start_plug(&plug);
1450 struct rb_node *node;
1453 if (dc->state != D_PREP)
1456 if (dpolicy->io_aware && !is_idle(sbi, DISCARD_TIME)) {
1457 io_interrupted = true;
1461 dcc->next_pos = dc->lstart + dc->len;
1462 err = __submit_discard_cmd(sbi, dpolicy, dc, &issued);
1464 if (issued >= dpolicy->max_requests)
1467 node = rb_next(&dc->rb_node);
1469 __remove_discard_cmd(sbi, dc);
1470 dc = rb_entry_safe(node, struct discard_cmd, rb_node);
1473 blk_finish_plug(&plug);
1478 mutex_unlock(&dcc->cmd_lock);
1480 if (!issued && io_interrupted)
1485 static unsigned int __wait_all_discard_cmd(struct f2fs_sb_info *sbi,
1486 struct discard_policy *dpolicy);
1488 static int __issue_discard_cmd(struct f2fs_sb_info *sbi,
1489 struct discard_policy *dpolicy)
1491 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1492 struct list_head *pend_list;
1493 struct discard_cmd *dc, *tmp;
1494 struct blk_plug plug;
1496 bool io_interrupted = false;
1498 if (dpolicy->timeout)
1499 f2fs_update_time(sbi, UMOUNT_DISCARD_TIMEOUT);
1503 for (i = MAX_PLIST_NUM - 1; i >= 0; i--) {
1504 if (dpolicy->timeout &&
1505 f2fs_time_over(sbi, UMOUNT_DISCARD_TIMEOUT))
1508 if (i + 1 < dpolicy->granularity)
1511 if (i < DEFAULT_DISCARD_GRANULARITY && dpolicy->ordered)
1512 return __issue_discard_cmd_orderly(sbi, dpolicy);
1514 pend_list = &dcc->pend_list[i];
1516 mutex_lock(&dcc->cmd_lock);
1517 if (list_empty(pend_list))
1519 if (unlikely(dcc->rbtree_check))
1520 f2fs_bug_on(sbi, !f2fs_check_rb_tree_consistence(sbi,
1521 &dcc->root, false));
1522 blk_start_plug(&plug);
1523 list_for_each_entry_safe(dc, tmp, pend_list, list) {
1524 f2fs_bug_on(sbi, dc->state != D_PREP);
1526 if (dpolicy->timeout &&
1527 f2fs_time_over(sbi, UMOUNT_DISCARD_TIMEOUT))
1530 if (dpolicy->io_aware && i < dpolicy->io_aware_gran &&
1531 !is_idle(sbi, DISCARD_TIME)) {
1532 io_interrupted = true;
1536 __submit_discard_cmd(sbi, dpolicy, dc, &issued);
1538 if (issued >= dpolicy->max_requests)
1541 blk_finish_plug(&plug);
1543 mutex_unlock(&dcc->cmd_lock);
1545 if (issued >= dpolicy->max_requests || io_interrupted)
1549 if (dpolicy->type == DPOLICY_UMOUNT && issued) {
1550 __wait_all_discard_cmd(sbi, dpolicy);
1554 if (!issued && io_interrupted)
1560 static bool __drop_discard_cmd(struct f2fs_sb_info *sbi)
1562 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1563 struct list_head *pend_list;
1564 struct discard_cmd *dc, *tmp;
1566 bool dropped = false;
1568 mutex_lock(&dcc->cmd_lock);
1569 for (i = MAX_PLIST_NUM - 1; i >= 0; i--) {
1570 pend_list = &dcc->pend_list[i];
1571 list_for_each_entry_safe(dc, tmp, pend_list, list) {
1572 f2fs_bug_on(sbi, dc->state != D_PREP);
1573 __remove_discard_cmd(sbi, dc);
1577 mutex_unlock(&dcc->cmd_lock);
1582 void f2fs_drop_discard_cmd(struct f2fs_sb_info *sbi)
1584 __drop_discard_cmd(sbi);
1587 static unsigned int __wait_one_discard_bio(struct f2fs_sb_info *sbi,
1588 struct discard_cmd *dc)
1590 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1591 unsigned int len = 0;
1593 wait_for_completion_io(&dc->wait);
1594 mutex_lock(&dcc->cmd_lock);
1595 f2fs_bug_on(sbi, dc->state != D_DONE);
1600 __remove_discard_cmd(sbi, dc);
1602 mutex_unlock(&dcc->cmd_lock);
1607 static unsigned int __wait_discard_cmd_range(struct f2fs_sb_info *sbi,
1608 struct discard_policy *dpolicy,
1609 block_t start, block_t end)
1611 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1612 struct list_head *wait_list = (dpolicy->type == DPOLICY_FSTRIM) ?
1613 &(dcc->fstrim_list) : &(dcc->wait_list);
1614 struct discard_cmd *dc, *tmp;
1616 unsigned int trimmed = 0;
1621 mutex_lock(&dcc->cmd_lock);
1622 list_for_each_entry_safe(dc, tmp, wait_list, list) {
1623 if (dc->lstart + dc->len <= start || end <= dc->lstart)
1625 if (dc->len < dpolicy->granularity)
1627 if (dc->state == D_DONE && !dc->ref) {
1628 wait_for_completion_io(&dc->wait);
1631 __remove_discard_cmd(sbi, dc);
1638 mutex_unlock(&dcc->cmd_lock);
1641 trimmed += __wait_one_discard_bio(sbi, dc);
1648 static unsigned int __wait_all_discard_cmd(struct f2fs_sb_info *sbi,
1649 struct discard_policy *dpolicy)
1651 struct discard_policy dp;
1652 unsigned int discard_blks;
1655 return __wait_discard_cmd_range(sbi, dpolicy, 0, UINT_MAX);
1658 __init_discard_policy(sbi, &dp, DPOLICY_FSTRIM, 1);
1659 discard_blks = __wait_discard_cmd_range(sbi, &dp, 0, UINT_MAX);
1660 __init_discard_policy(sbi, &dp, DPOLICY_UMOUNT, 1);
1661 discard_blks += __wait_discard_cmd_range(sbi, &dp, 0, UINT_MAX);
1663 return discard_blks;
1666 /* This should be covered by global mutex, &sit_i->sentry_lock */
1667 static void f2fs_wait_discard_bio(struct f2fs_sb_info *sbi, block_t blkaddr)
1669 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1670 struct discard_cmd *dc;
1671 bool need_wait = false;
1673 mutex_lock(&dcc->cmd_lock);
1674 dc = (struct discard_cmd *)f2fs_lookup_rb_tree(&dcc->root,
1677 if (dc->state == D_PREP) {
1678 __punch_discard_cmd(sbi, dc, blkaddr);
1684 mutex_unlock(&dcc->cmd_lock);
1687 __wait_one_discard_bio(sbi, dc);
1690 void f2fs_stop_discard_thread(struct f2fs_sb_info *sbi)
1692 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1694 if (dcc && dcc->f2fs_issue_discard) {
1695 struct task_struct *discard_thread = dcc->f2fs_issue_discard;
1697 dcc->f2fs_issue_discard = NULL;
1698 kthread_stop(discard_thread);
1702 /* This comes from f2fs_put_super */
1703 bool f2fs_issue_discard_timeout(struct f2fs_sb_info *sbi)
1705 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1706 struct discard_policy dpolicy;
1709 __init_discard_policy(sbi, &dpolicy, DPOLICY_UMOUNT,
1710 dcc->discard_granularity);
1711 __issue_discard_cmd(sbi, &dpolicy);
1712 dropped = __drop_discard_cmd(sbi);
1714 /* just to make sure there is no pending discard commands */
1715 __wait_all_discard_cmd(sbi, NULL);
1717 f2fs_bug_on(sbi, atomic_read(&dcc->discard_cmd_cnt));
1721 static int issue_discard_thread(void *data)
1723 struct f2fs_sb_info *sbi = data;
1724 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1725 wait_queue_head_t *q = &dcc->discard_wait_queue;
1726 struct discard_policy dpolicy;
1727 unsigned int wait_ms = DEF_MIN_DISCARD_ISSUE_TIME;
1733 __init_discard_policy(sbi, &dpolicy, DPOLICY_BG,
1734 dcc->discard_granularity);
1736 wait_event_interruptible_timeout(*q,
1737 kthread_should_stop() || freezing(current) ||
1739 msecs_to_jiffies(wait_ms));
1741 if (dcc->discard_wake)
1742 dcc->discard_wake = 0;
1744 /* clean up pending candidates before going to sleep */
1745 if (atomic_read(&dcc->queued_discard))
1746 __wait_all_discard_cmd(sbi, NULL);
1748 if (try_to_freeze())
1750 if (f2fs_readonly(sbi->sb))
1752 if (kthread_should_stop())
1754 if (is_sbi_flag_set(sbi, SBI_NEED_FSCK)) {
1755 wait_ms = dpolicy.max_interval;
1759 if (sbi->gc_mode == GC_URGENT_HIGH)
1760 __init_discard_policy(sbi, &dpolicy, DPOLICY_FORCE, 1);
1762 sb_start_intwrite(sbi->sb);
1764 issued = __issue_discard_cmd(sbi, &dpolicy);
1766 __wait_all_discard_cmd(sbi, &dpolicy);
1767 wait_ms = dpolicy.min_interval;
1768 } else if (issued == -1){
1769 wait_ms = f2fs_time_to_wait(sbi, DISCARD_TIME);
1771 wait_ms = dpolicy.mid_interval;
1773 wait_ms = dpolicy.max_interval;
1776 sb_end_intwrite(sbi->sb);
1778 } while (!kthread_should_stop());
1782 #ifdef CONFIG_BLK_DEV_ZONED
1783 static int __f2fs_issue_discard_zone(struct f2fs_sb_info *sbi,
1784 struct block_device *bdev, block_t blkstart, block_t blklen)
1786 sector_t sector, nr_sects;
1787 block_t lblkstart = blkstart;
1790 if (f2fs_is_multi_device(sbi)) {
1791 devi = f2fs_target_device_index(sbi, blkstart);
1792 if (blkstart < FDEV(devi).start_blk ||
1793 blkstart > FDEV(devi).end_blk) {
1794 f2fs_err(sbi, "Invalid block %x", blkstart);
1797 blkstart -= FDEV(devi).start_blk;
1800 /* For sequential zones, reset the zone write pointer */
1801 if (f2fs_blkz_is_seq(sbi, devi, blkstart)) {
1802 sector = SECTOR_FROM_BLOCK(blkstart);
1803 nr_sects = SECTOR_FROM_BLOCK(blklen);
1805 if (sector & (bdev_zone_sectors(bdev) - 1) ||
1806 nr_sects != bdev_zone_sectors(bdev)) {
1807 f2fs_err(sbi, "(%d) %s: Unaligned zone reset attempted (block %x + %x)",
1808 devi, sbi->s_ndevs ? FDEV(devi).path : "",
1812 trace_f2fs_issue_reset_zone(bdev, blkstart);
1813 return blkdev_zone_mgmt(bdev, REQ_OP_ZONE_RESET,
1814 sector, nr_sects, GFP_NOFS);
1817 /* For conventional zones, use regular discard if supported */
1818 return __queue_discard_cmd(sbi, bdev, lblkstart, blklen);
1822 static int __issue_discard_async(struct f2fs_sb_info *sbi,
1823 struct block_device *bdev, block_t blkstart, block_t blklen)
1825 #ifdef CONFIG_BLK_DEV_ZONED
1826 if (f2fs_sb_has_blkzoned(sbi) && bdev_is_zoned(bdev))
1827 return __f2fs_issue_discard_zone(sbi, bdev, blkstart, blklen);
1829 return __queue_discard_cmd(sbi, bdev, blkstart, blklen);
1832 static int f2fs_issue_discard(struct f2fs_sb_info *sbi,
1833 block_t blkstart, block_t blklen)
1835 sector_t start = blkstart, len = 0;
1836 struct block_device *bdev;
1837 struct seg_entry *se;
1838 unsigned int offset;
1842 bdev = f2fs_target_device(sbi, blkstart, NULL);
1844 for (i = blkstart; i < blkstart + blklen; i++, len++) {
1846 struct block_device *bdev2 =
1847 f2fs_target_device(sbi, i, NULL);
1849 if (bdev2 != bdev) {
1850 err = __issue_discard_async(sbi, bdev,
1860 se = get_seg_entry(sbi, GET_SEGNO(sbi, i));
1861 offset = GET_BLKOFF_FROM_SEG0(sbi, i);
1863 if (!f2fs_test_and_set_bit(offset, se->discard_map))
1864 sbi->discard_blks--;
1868 err = __issue_discard_async(sbi, bdev, start, len);
1872 static bool add_discard_addrs(struct f2fs_sb_info *sbi, struct cp_control *cpc,
1875 int entries = SIT_VBLOCK_MAP_SIZE / sizeof(unsigned long);
1876 int max_blocks = sbi->blocks_per_seg;
1877 struct seg_entry *se = get_seg_entry(sbi, cpc->trim_start);
1878 unsigned long *cur_map = (unsigned long *)se->cur_valid_map;
1879 unsigned long *ckpt_map = (unsigned long *)se->ckpt_valid_map;
1880 unsigned long *discard_map = (unsigned long *)se->discard_map;
1881 unsigned long *dmap = SIT_I(sbi)->tmp_map;
1882 unsigned int start = 0, end = -1;
1883 bool force = (cpc->reason & CP_DISCARD);
1884 struct discard_entry *de = NULL;
1885 struct list_head *head = &SM_I(sbi)->dcc_info->entry_list;
1888 if (se->valid_blocks == max_blocks || !f2fs_hw_support_discard(sbi))
1892 if (!f2fs_realtime_discard_enable(sbi) || !se->valid_blocks ||
1893 SM_I(sbi)->dcc_info->nr_discards >=
1894 SM_I(sbi)->dcc_info->max_discards)
1898 /* SIT_VBLOCK_MAP_SIZE should be multiple of sizeof(unsigned long) */
1899 for (i = 0; i < entries; i++)
1900 dmap[i] = force ? ~ckpt_map[i] & ~discard_map[i] :
1901 (cur_map[i] ^ ckpt_map[i]) & ckpt_map[i];
1903 while (force || SM_I(sbi)->dcc_info->nr_discards <=
1904 SM_I(sbi)->dcc_info->max_discards) {
1905 start = __find_rev_next_bit(dmap, max_blocks, end + 1);
1906 if (start >= max_blocks)
1909 end = __find_rev_next_zero_bit(dmap, max_blocks, start + 1);
1910 if (force && start && end != max_blocks
1911 && (end - start) < cpc->trim_minlen)
1918 de = f2fs_kmem_cache_alloc(discard_entry_slab,
1920 de->start_blkaddr = START_BLOCK(sbi, cpc->trim_start);
1921 list_add_tail(&de->list, head);
1924 for (i = start; i < end; i++)
1925 __set_bit_le(i, (void *)de->discard_map);
1927 SM_I(sbi)->dcc_info->nr_discards += end - start;
1932 static void release_discard_addr(struct discard_entry *entry)
1934 list_del(&entry->list);
1935 kmem_cache_free(discard_entry_slab, entry);
1938 void f2fs_release_discard_addrs(struct f2fs_sb_info *sbi)
1940 struct list_head *head = &(SM_I(sbi)->dcc_info->entry_list);
1941 struct discard_entry *entry, *this;
1944 list_for_each_entry_safe(entry, this, head, list)
1945 release_discard_addr(entry);
1949 * Should call f2fs_clear_prefree_segments after checkpoint is done.
1951 static void set_prefree_as_free_segments(struct f2fs_sb_info *sbi)
1953 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
1956 mutex_lock(&dirty_i->seglist_lock);
1957 for_each_set_bit(segno, dirty_i->dirty_segmap[PRE], MAIN_SEGS(sbi))
1958 __set_test_and_free(sbi, segno, false);
1959 mutex_unlock(&dirty_i->seglist_lock);
1962 void f2fs_clear_prefree_segments(struct f2fs_sb_info *sbi,
1963 struct cp_control *cpc)
1965 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1966 struct list_head *head = &dcc->entry_list;
1967 struct discard_entry *entry, *this;
1968 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
1969 unsigned long *prefree_map = dirty_i->dirty_segmap[PRE];
1970 unsigned int start = 0, end = -1;
1971 unsigned int secno, start_segno;
1972 bool force = (cpc->reason & CP_DISCARD);
1973 bool need_align = f2fs_lfs_mode(sbi) && __is_large_section(sbi);
1975 mutex_lock(&dirty_i->seglist_lock);
1980 if (need_align && end != -1)
1982 start = find_next_bit(prefree_map, MAIN_SEGS(sbi), end + 1);
1983 if (start >= MAIN_SEGS(sbi))
1985 end = find_next_zero_bit(prefree_map, MAIN_SEGS(sbi),
1989 start = rounddown(start, sbi->segs_per_sec);
1990 end = roundup(end, sbi->segs_per_sec);
1993 for (i = start; i < end; i++) {
1994 if (test_and_clear_bit(i, prefree_map))
1995 dirty_i->nr_dirty[PRE]--;
1998 if (!f2fs_realtime_discard_enable(sbi))
2001 if (force && start >= cpc->trim_start &&
2002 (end - 1) <= cpc->trim_end)
2005 if (!f2fs_lfs_mode(sbi) || !__is_large_section(sbi)) {
2006 f2fs_issue_discard(sbi, START_BLOCK(sbi, start),
2007 (end - start) << sbi->log_blocks_per_seg);
2011 secno = GET_SEC_FROM_SEG(sbi, start);
2012 start_segno = GET_SEG_FROM_SEC(sbi, secno);
2013 if (!IS_CURSEC(sbi, secno) &&
2014 !get_valid_blocks(sbi, start, true))
2015 f2fs_issue_discard(sbi, START_BLOCK(sbi, start_segno),
2016 sbi->segs_per_sec << sbi->log_blocks_per_seg);
2018 start = start_segno + sbi->segs_per_sec;
2024 mutex_unlock(&dirty_i->seglist_lock);
2026 /* send small discards */
2027 list_for_each_entry_safe(entry, this, head, list) {
2028 unsigned int cur_pos = 0, next_pos, len, total_len = 0;
2029 bool is_valid = test_bit_le(0, entry->discard_map);
2033 next_pos = find_next_zero_bit_le(entry->discard_map,
2034 sbi->blocks_per_seg, cur_pos);
2035 len = next_pos - cur_pos;
2037 if (f2fs_sb_has_blkzoned(sbi) ||
2038 (force && len < cpc->trim_minlen))
2041 f2fs_issue_discard(sbi, entry->start_blkaddr + cur_pos,
2045 next_pos = find_next_bit_le(entry->discard_map,
2046 sbi->blocks_per_seg, cur_pos);
2050 is_valid = !is_valid;
2052 if (cur_pos < sbi->blocks_per_seg)
2055 release_discard_addr(entry);
2056 dcc->nr_discards -= total_len;
2059 wake_up_discard_thread(sbi, false);
2062 static int create_discard_cmd_control(struct f2fs_sb_info *sbi)
2064 dev_t dev = sbi->sb->s_bdev->bd_dev;
2065 struct discard_cmd_control *dcc;
2068 if (SM_I(sbi)->dcc_info) {
2069 dcc = SM_I(sbi)->dcc_info;
2073 dcc = f2fs_kzalloc(sbi, sizeof(struct discard_cmd_control), GFP_KERNEL);
2077 dcc->discard_granularity = DEFAULT_DISCARD_GRANULARITY;
2078 INIT_LIST_HEAD(&dcc->entry_list);
2079 for (i = 0; i < MAX_PLIST_NUM; i++)
2080 INIT_LIST_HEAD(&dcc->pend_list[i]);
2081 INIT_LIST_HEAD(&dcc->wait_list);
2082 INIT_LIST_HEAD(&dcc->fstrim_list);
2083 mutex_init(&dcc->cmd_lock);
2084 atomic_set(&dcc->issued_discard, 0);
2085 atomic_set(&dcc->queued_discard, 0);
2086 atomic_set(&dcc->discard_cmd_cnt, 0);
2087 dcc->nr_discards = 0;
2088 dcc->max_discards = MAIN_SEGS(sbi) << sbi->log_blocks_per_seg;
2089 dcc->undiscard_blks = 0;
2091 dcc->root = RB_ROOT_CACHED;
2092 dcc->rbtree_check = false;
2094 init_waitqueue_head(&dcc->discard_wait_queue);
2095 SM_I(sbi)->dcc_info = dcc;
2097 dcc->f2fs_issue_discard = kthread_run(issue_discard_thread, sbi,
2098 "f2fs_discard-%u:%u", MAJOR(dev), MINOR(dev));
2099 if (IS_ERR(dcc->f2fs_issue_discard)) {
2100 err = PTR_ERR(dcc->f2fs_issue_discard);
2102 SM_I(sbi)->dcc_info = NULL;
2109 static void destroy_discard_cmd_control(struct f2fs_sb_info *sbi)
2111 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
2116 f2fs_stop_discard_thread(sbi);
2119 * Recovery can cache discard commands, so in error path of
2120 * fill_super(), it needs to give a chance to handle them.
2122 if (unlikely(atomic_read(&dcc->discard_cmd_cnt)))
2123 f2fs_issue_discard_timeout(sbi);
2126 SM_I(sbi)->dcc_info = NULL;
2129 static bool __mark_sit_entry_dirty(struct f2fs_sb_info *sbi, unsigned int segno)
2131 struct sit_info *sit_i = SIT_I(sbi);
2133 if (!__test_and_set_bit(segno, sit_i->dirty_sentries_bitmap)) {
2134 sit_i->dirty_sentries++;
2141 static void __set_sit_entry_type(struct f2fs_sb_info *sbi, int type,
2142 unsigned int segno, int modified)
2144 struct seg_entry *se = get_seg_entry(sbi, segno);
2147 __mark_sit_entry_dirty(sbi, segno);
2150 static inline unsigned long long get_segment_mtime(struct f2fs_sb_info *sbi,
2153 unsigned int segno = GET_SEGNO(sbi, blkaddr);
2155 if (segno == NULL_SEGNO)
2157 return get_seg_entry(sbi, segno)->mtime;
2160 static void update_segment_mtime(struct f2fs_sb_info *sbi, block_t blkaddr,
2161 unsigned long long old_mtime)
2163 struct seg_entry *se;
2164 unsigned int segno = GET_SEGNO(sbi, blkaddr);
2165 unsigned long long ctime = get_mtime(sbi, false);
2166 unsigned long long mtime = old_mtime ? old_mtime : ctime;
2168 if (segno == NULL_SEGNO)
2171 se = get_seg_entry(sbi, segno);
2176 se->mtime = div_u64(se->mtime * se->valid_blocks + mtime,
2177 se->valid_blocks + 1);
2179 if (ctime > SIT_I(sbi)->max_mtime)
2180 SIT_I(sbi)->max_mtime = ctime;
2183 static void update_sit_entry(struct f2fs_sb_info *sbi, block_t blkaddr, int del)
2185 struct seg_entry *se;
2186 unsigned int segno, offset;
2187 long int new_vblocks;
2189 #ifdef CONFIG_F2FS_CHECK_FS
2193 segno = GET_SEGNO(sbi, blkaddr);
2195 se = get_seg_entry(sbi, segno);
2196 new_vblocks = se->valid_blocks + del;
2197 offset = GET_BLKOFF_FROM_SEG0(sbi, blkaddr);
2199 f2fs_bug_on(sbi, (new_vblocks < 0 ||
2200 (new_vblocks > f2fs_usable_blks_in_seg(sbi, segno))));
2202 se->valid_blocks = new_vblocks;
2204 /* Update valid block bitmap */
2206 exist = f2fs_test_and_set_bit(offset, se->cur_valid_map);
2207 #ifdef CONFIG_F2FS_CHECK_FS
2208 mir_exist = f2fs_test_and_set_bit(offset,
2209 se->cur_valid_map_mir);
2210 if (unlikely(exist != mir_exist)) {
2211 f2fs_err(sbi, "Inconsistent error when setting bitmap, blk:%u, old bit:%d",
2213 f2fs_bug_on(sbi, 1);
2216 if (unlikely(exist)) {
2217 f2fs_err(sbi, "Bitmap was wrongly set, blk:%u",
2219 f2fs_bug_on(sbi, 1);
2224 if (!f2fs_test_and_set_bit(offset, se->discard_map))
2225 sbi->discard_blks--;
2228 * SSR should never reuse block which is checkpointed
2229 * or newly invalidated.
2231 if (!is_sbi_flag_set(sbi, SBI_CP_DISABLED)) {
2232 if (!f2fs_test_and_set_bit(offset, se->ckpt_valid_map))
2233 se->ckpt_valid_blocks++;
2236 exist = f2fs_test_and_clear_bit(offset, se->cur_valid_map);
2237 #ifdef CONFIG_F2FS_CHECK_FS
2238 mir_exist = f2fs_test_and_clear_bit(offset,
2239 se->cur_valid_map_mir);
2240 if (unlikely(exist != mir_exist)) {
2241 f2fs_err(sbi, "Inconsistent error when clearing bitmap, blk:%u, old bit:%d",
2243 f2fs_bug_on(sbi, 1);
2246 if (unlikely(!exist)) {
2247 f2fs_err(sbi, "Bitmap was wrongly cleared, blk:%u",
2249 f2fs_bug_on(sbi, 1);
2252 } else if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
2254 * If checkpoints are off, we must not reuse data that
2255 * was used in the previous checkpoint. If it was used
2256 * before, we must track that to know how much space we
2259 if (f2fs_test_bit(offset, se->ckpt_valid_map)) {
2260 spin_lock(&sbi->stat_lock);
2261 sbi->unusable_block_count++;
2262 spin_unlock(&sbi->stat_lock);
2266 if (f2fs_test_and_clear_bit(offset, se->discard_map))
2267 sbi->discard_blks++;
2269 if (!f2fs_test_bit(offset, se->ckpt_valid_map))
2270 se->ckpt_valid_blocks += del;
2272 __mark_sit_entry_dirty(sbi, segno);
2274 /* update total number of valid blocks to be written in ckpt area */
2275 SIT_I(sbi)->written_valid_blocks += del;
2277 if (__is_large_section(sbi))
2278 get_sec_entry(sbi, segno)->valid_blocks += del;
2281 void f2fs_invalidate_blocks(struct f2fs_sb_info *sbi, block_t addr)
2283 unsigned int segno = GET_SEGNO(sbi, addr);
2284 struct sit_info *sit_i = SIT_I(sbi);
2286 f2fs_bug_on(sbi, addr == NULL_ADDR);
2287 if (addr == NEW_ADDR || addr == COMPRESS_ADDR)
2290 invalidate_mapping_pages(META_MAPPING(sbi), addr, addr);
2292 /* add it into sit main buffer */
2293 down_write(&sit_i->sentry_lock);
2295 update_segment_mtime(sbi, addr, 0);
2296 update_sit_entry(sbi, addr, -1);
2298 /* add it into dirty seglist */
2299 locate_dirty_segment(sbi, segno);
2301 up_write(&sit_i->sentry_lock);
2304 bool f2fs_is_checkpointed_data(struct f2fs_sb_info *sbi, block_t blkaddr)
2306 struct sit_info *sit_i = SIT_I(sbi);
2307 unsigned int segno, offset;
2308 struct seg_entry *se;
2311 if (!__is_valid_data_blkaddr(blkaddr))
2314 down_read(&sit_i->sentry_lock);
2316 segno = GET_SEGNO(sbi, blkaddr);
2317 se = get_seg_entry(sbi, segno);
2318 offset = GET_BLKOFF_FROM_SEG0(sbi, blkaddr);
2320 if (f2fs_test_bit(offset, se->ckpt_valid_map))
2323 up_read(&sit_i->sentry_lock);
2329 * This function should be resided under the curseg_mutex lock
2331 static void __add_sum_entry(struct f2fs_sb_info *sbi, int type,
2332 struct f2fs_summary *sum)
2334 struct curseg_info *curseg = CURSEG_I(sbi, type);
2335 void *addr = curseg->sum_blk;
2336 addr += curseg->next_blkoff * sizeof(struct f2fs_summary);
2337 memcpy(addr, sum, sizeof(struct f2fs_summary));
2341 * Calculate the number of current summary pages for writing
2343 int f2fs_npages_for_summary_flush(struct f2fs_sb_info *sbi, bool for_ra)
2345 int valid_sum_count = 0;
2348 for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) {
2349 if (sbi->ckpt->alloc_type[i] == SSR)
2350 valid_sum_count += sbi->blocks_per_seg;
2353 valid_sum_count += le16_to_cpu(
2354 F2FS_CKPT(sbi)->cur_data_blkoff[i]);
2356 valid_sum_count += curseg_blkoff(sbi, i);
2360 sum_in_page = (PAGE_SIZE - 2 * SUM_JOURNAL_SIZE -
2361 SUM_FOOTER_SIZE) / SUMMARY_SIZE;
2362 if (valid_sum_count <= sum_in_page)
2364 else if ((valid_sum_count - sum_in_page) <=
2365 (PAGE_SIZE - SUM_FOOTER_SIZE) / SUMMARY_SIZE)
2371 * Caller should put this summary page
2373 struct page *f2fs_get_sum_page(struct f2fs_sb_info *sbi, unsigned int segno)
2375 if (unlikely(f2fs_cp_error(sbi)))
2376 return ERR_PTR(-EIO);
2377 return f2fs_get_meta_page_retry(sbi, GET_SUM_BLOCK(sbi, segno));
2380 void f2fs_update_meta_page(struct f2fs_sb_info *sbi,
2381 void *src, block_t blk_addr)
2383 struct page *page = f2fs_grab_meta_page(sbi, blk_addr);
2385 memcpy(page_address(page), src, PAGE_SIZE);
2386 set_page_dirty(page);
2387 f2fs_put_page(page, 1);
2390 static void write_sum_page(struct f2fs_sb_info *sbi,
2391 struct f2fs_summary_block *sum_blk, block_t blk_addr)
2393 f2fs_update_meta_page(sbi, (void *)sum_blk, blk_addr);
2396 static void write_current_sum_page(struct f2fs_sb_info *sbi,
2397 int type, block_t blk_addr)
2399 struct curseg_info *curseg = CURSEG_I(sbi, type);
2400 struct page *page = f2fs_grab_meta_page(sbi, blk_addr);
2401 struct f2fs_summary_block *src = curseg->sum_blk;
2402 struct f2fs_summary_block *dst;
2404 dst = (struct f2fs_summary_block *)page_address(page);
2405 memset(dst, 0, PAGE_SIZE);
2407 mutex_lock(&curseg->curseg_mutex);
2409 down_read(&curseg->journal_rwsem);
2410 memcpy(&dst->journal, curseg->journal, SUM_JOURNAL_SIZE);
2411 up_read(&curseg->journal_rwsem);
2413 memcpy(dst->entries, src->entries, SUM_ENTRY_SIZE);
2414 memcpy(&dst->footer, &src->footer, SUM_FOOTER_SIZE);
2416 mutex_unlock(&curseg->curseg_mutex);
2418 set_page_dirty(page);
2419 f2fs_put_page(page, 1);
2422 static int is_next_segment_free(struct f2fs_sb_info *sbi,
2423 struct curseg_info *curseg, int type)
2425 unsigned int segno = curseg->segno + 1;
2426 struct free_segmap_info *free_i = FREE_I(sbi);
2428 if (segno < MAIN_SEGS(sbi) && segno % sbi->segs_per_sec)
2429 return !test_bit(segno, free_i->free_segmap);
2434 * Find a new segment from the free segments bitmap to right order
2435 * This function should be returned with success, otherwise BUG
2437 static void get_new_segment(struct f2fs_sb_info *sbi,
2438 unsigned int *newseg, bool new_sec, int dir)
2440 struct free_segmap_info *free_i = FREE_I(sbi);
2441 unsigned int segno, secno, zoneno;
2442 unsigned int total_zones = MAIN_SECS(sbi) / sbi->secs_per_zone;
2443 unsigned int hint = GET_SEC_FROM_SEG(sbi, *newseg);
2444 unsigned int old_zoneno = GET_ZONE_FROM_SEG(sbi, *newseg);
2445 unsigned int left_start = hint;
2450 spin_lock(&free_i->segmap_lock);
2452 if (!new_sec && ((*newseg + 1) % sbi->segs_per_sec)) {
2453 segno = find_next_zero_bit(free_i->free_segmap,
2454 GET_SEG_FROM_SEC(sbi, hint + 1), *newseg + 1);
2455 if (segno < GET_SEG_FROM_SEC(sbi, hint + 1))
2459 secno = find_next_zero_bit(free_i->free_secmap, MAIN_SECS(sbi), hint);
2460 if (secno >= MAIN_SECS(sbi)) {
2461 if (dir == ALLOC_RIGHT) {
2462 secno = find_next_zero_bit(free_i->free_secmap,
2464 f2fs_bug_on(sbi, secno >= MAIN_SECS(sbi));
2467 left_start = hint - 1;
2473 while (test_bit(left_start, free_i->free_secmap)) {
2474 if (left_start > 0) {
2478 left_start = find_next_zero_bit(free_i->free_secmap,
2480 f2fs_bug_on(sbi, left_start >= MAIN_SECS(sbi));
2485 segno = GET_SEG_FROM_SEC(sbi, secno);
2486 zoneno = GET_ZONE_FROM_SEC(sbi, secno);
2488 /* give up on finding another zone */
2491 if (sbi->secs_per_zone == 1)
2493 if (zoneno == old_zoneno)
2495 if (dir == ALLOC_LEFT) {
2496 if (!go_left && zoneno + 1 >= total_zones)
2498 if (go_left && zoneno == 0)
2501 for (i = 0; i < NR_CURSEG_TYPE; i++)
2502 if (CURSEG_I(sbi, i)->zone == zoneno)
2505 if (i < NR_CURSEG_TYPE) {
2506 /* zone is in user, try another */
2508 hint = zoneno * sbi->secs_per_zone - 1;
2509 else if (zoneno + 1 >= total_zones)
2512 hint = (zoneno + 1) * sbi->secs_per_zone;
2514 goto find_other_zone;
2517 /* set it as dirty segment in free segmap */
2518 f2fs_bug_on(sbi, test_bit(segno, free_i->free_segmap));
2519 __set_inuse(sbi, segno);
2521 spin_unlock(&free_i->segmap_lock);
2524 static void reset_curseg(struct f2fs_sb_info *sbi, int type, int modified)
2526 struct curseg_info *curseg = CURSEG_I(sbi, type);
2527 struct summary_footer *sum_footer;
2528 unsigned short seg_type = curseg->seg_type;
2530 curseg->inited = true;
2531 curseg->segno = curseg->next_segno;
2532 curseg->zone = GET_ZONE_FROM_SEG(sbi, curseg->segno);
2533 curseg->next_blkoff = 0;
2534 curseg->next_segno = NULL_SEGNO;
2536 sum_footer = &(curseg->sum_blk->footer);
2537 memset(sum_footer, 0, sizeof(struct summary_footer));
2539 sanity_check_seg_type(sbi, seg_type);
2541 if (IS_DATASEG(seg_type))
2542 SET_SUM_TYPE(sum_footer, SUM_TYPE_DATA);
2543 if (IS_NODESEG(seg_type))
2544 SET_SUM_TYPE(sum_footer, SUM_TYPE_NODE);
2545 __set_sit_entry_type(sbi, seg_type, curseg->segno, modified);
2548 static unsigned int __get_next_segno(struct f2fs_sb_info *sbi, int type)
2550 struct curseg_info *curseg = CURSEG_I(sbi, type);
2551 unsigned short seg_type = curseg->seg_type;
2553 sanity_check_seg_type(sbi, seg_type);
2555 /* if segs_per_sec is large than 1, we need to keep original policy. */
2556 if (__is_large_section(sbi))
2557 return curseg->segno;
2559 /* inmem log may not locate on any segment after mount */
2560 if (!curseg->inited)
2563 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
2566 if (test_opt(sbi, NOHEAP) &&
2567 (seg_type == CURSEG_HOT_DATA || IS_NODESEG(seg_type)))
2570 if (SIT_I(sbi)->last_victim[ALLOC_NEXT])
2571 return SIT_I(sbi)->last_victim[ALLOC_NEXT];
2573 /* find segments from 0 to reuse freed segments */
2574 if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_REUSE)
2577 return curseg->segno;
2581 * Allocate a current working segment.
2582 * This function always allocates a free segment in LFS manner.
2584 static void new_curseg(struct f2fs_sb_info *sbi, int type, bool new_sec)
2586 struct curseg_info *curseg = CURSEG_I(sbi, type);
2587 unsigned short seg_type = curseg->seg_type;
2588 unsigned int segno = curseg->segno;
2589 int dir = ALLOC_LEFT;
2592 write_sum_page(sbi, curseg->sum_blk,
2593 GET_SUM_BLOCK(sbi, segno));
2594 if (seg_type == CURSEG_WARM_DATA || seg_type == CURSEG_COLD_DATA)
2597 if (test_opt(sbi, NOHEAP))
2600 segno = __get_next_segno(sbi, type);
2601 get_new_segment(sbi, &segno, new_sec, dir);
2602 curseg->next_segno = segno;
2603 reset_curseg(sbi, type, 1);
2604 curseg->alloc_type = LFS;
2607 static void __next_free_blkoff(struct f2fs_sb_info *sbi,
2608 struct curseg_info *seg, block_t start)
2610 struct seg_entry *se = get_seg_entry(sbi, seg->segno);
2611 int entries = SIT_VBLOCK_MAP_SIZE / sizeof(unsigned long);
2612 unsigned long *target_map = SIT_I(sbi)->tmp_map;
2613 unsigned long *ckpt_map = (unsigned long *)se->ckpt_valid_map;
2614 unsigned long *cur_map = (unsigned long *)se->cur_valid_map;
2617 for (i = 0; i < entries; i++)
2618 target_map[i] = ckpt_map[i] | cur_map[i];
2620 pos = __find_rev_next_zero_bit(target_map, sbi->blocks_per_seg, start);
2622 seg->next_blkoff = pos;
2626 * If a segment is written by LFS manner, next block offset is just obtained
2627 * by increasing the current block offset. However, if a segment is written by
2628 * SSR manner, next block offset obtained by calling __next_free_blkoff
2630 static void __refresh_next_blkoff(struct f2fs_sb_info *sbi,
2631 struct curseg_info *seg)
2633 if (seg->alloc_type == SSR)
2634 __next_free_blkoff(sbi, seg, seg->next_blkoff + 1);
2640 * This function always allocates a used segment(from dirty seglist) by SSR
2641 * manner, so it should recover the existing segment information of valid blocks
2643 static void change_curseg(struct f2fs_sb_info *sbi, int type, bool flush)
2645 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
2646 struct curseg_info *curseg = CURSEG_I(sbi, type);
2647 unsigned int new_segno = curseg->next_segno;
2648 struct f2fs_summary_block *sum_node;
2649 struct page *sum_page;
2652 write_sum_page(sbi, curseg->sum_blk,
2653 GET_SUM_BLOCK(sbi, curseg->segno));
2655 __set_test_and_inuse(sbi, new_segno);
2657 mutex_lock(&dirty_i->seglist_lock);
2658 __remove_dirty_segment(sbi, new_segno, PRE);
2659 __remove_dirty_segment(sbi, new_segno, DIRTY);
2660 mutex_unlock(&dirty_i->seglist_lock);
2662 reset_curseg(sbi, type, 1);
2663 curseg->alloc_type = SSR;
2664 __next_free_blkoff(sbi, curseg, 0);
2666 sum_page = f2fs_get_sum_page(sbi, new_segno);
2667 if (IS_ERR(sum_page)) {
2668 /* GC won't be able to use stale summary pages by cp_error */
2669 memset(curseg->sum_blk, 0, SUM_ENTRY_SIZE);
2672 sum_node = (struct f2fs_summary_block *)page_address(sum_page);
2673 memcpy(curseg->sum_blk, sum_node, SUM_ENTRY_SIZE);
2674 f2fs_put_page(sum_page, 1);
2677 static int get_ssr_segment(struct f2fs_sb_info *sbi, int type,
2678 int alloc_mode, unsigned long long age);
2680 static void get_atssr_segment(struct f2fs_sb_info *sbi, int type,
2681 int target_type, int alloc_mode,
2682 unsigned long long age)
2684 struct curseg_info *curseg = CURSEG_I(sbi, type);
2686 curseg->seg_type = target_type;
2688 if (get_ssr_segment(sbi, type, alloc_mode, age)) {
2689 struct seg_entry *se = get_seg_entry(sbi, curseg->next_segno);
2691 curseg->seg_type = se->type;
2692 change_curseg(sbi, type, true);
2694 /* allocate cold segment by default */
2695 curseg->seg_type = CURSEG_COLD_DATA;
2696 new_curseg(sbi, type, true);
2698 stat_inc_seg_type(sbi, curseg);
2701 static void __f2fs_init_atgc_curseg(struct f2fs_sb_info *sbi)
2703 struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_ALL_DATA_ATGC);
2705 if (!sbi->am.atgc_enabled)
2708 down_read(&SM_I(sbi)->curseg_lock);
2710 mutex_lock(&curseg->curseg_mutex);
2711 down_write(&SIT_I(sbi)->sentry_lock);
2713 get_atssr_segment(sbi, CURSEG_ALL_DATA_ATGC, CURSEG_COLD_DATA, SSR, 0);
2715 up_write(&SIT_I(sbi)->sentry_lock);
2716 mutex_unlock(&curseg->curseg_mutex);
2718 up_read(&SM_I(sbi)->curseg_lock);
2721 void f2fs_init_inmem_curseg(struct f2fs_sb_info *sbi)
2723 __f2fs_init_atgc_curseg(sbi);
2726 static void __f2fs_save_inmem_curseg(struct f2fs_sb_info *sbi, int type)
2728 struct curseg_info *curseg = CURSEG_I(sbi, type);
2730 mutex_lock(&curseg->curseg_mutex);
2731 if (!curseg->inited)
2734 if (get_valid_blocks(sbi, curseg->segno, false)) {
2735 write_sum_page(sbi, curseg->sum_blk,
2736 GET_SUM_BLOCK(sbi, curseg->segno));
2738 mutex_lock(&DIRTY_I(sbi)->seglist_lock);
2739 __set_test_and_free(sbi, curseg->segno, true);
2740 mutex_unlock(&DIRTY_I(sbi)->seglist_lock);
2743 mutex_unlock(&curseg->curseg_mutex);
2746 void f2fs_save_inmem_curseg(struct f2fs_sb_info *sbi)
2748 __f2fs_save_inmem_curseg(sbi, CURSEG_COLD_DATA_PINNED);
2750 if (sbi->am.atgc_enabled)
2751 __f2fs_save_inmem_curseg(sbi, CURSEG_ALL_DATA_ATGC);
2754 static void __f2fs_restore_inmem_curseg(struct f2fs_sb_info *sbi, int type)
2756 struct curseg_info *curseg = CURSEG_I(sbi, type);
2758 mutex_lock(&curseg->curseg_mutex);
2759 if (!curseg->inited)
2761 if (get_valid_blocks(sbi, curseg->segno, false))
2764 mutex_lock(&DIRTY_I(sbi)->seglist_lock);
2765 __set_test_and_inuse(sbi, curseg->segno);
2766 mutex_unlock(&DIRTY_I(sbi)->seglist_lock);
2768 mutex_unlock(&curseg->curseg_mutex);
2771 void f2fs_restore_inmem_curseg(struct f2fs_sb_info *sbi)
2773 __f2fs_restore_inmem_curseg(sbi, CURSEG_COLD_DATA_PINNED);
2775 if (sbi->am.atgc_enabled)
2776 __f2fs_restore_inmem_curseg(sbi, CURSEG_ALL_DATA_ATGC);
2779 static int get_ssr_segment(struct f2fs_sb_info *sbi, int type,
2780 int alloc_mode, unsigned long long age)
2782 struct curseg_info *curseg = CURSEG_I(sbi, type);
2783 const struct victim_selection *v_ops = DIRTY_I(sbi)->v_ops;
2784 unsigned segno = NULL_SEGNO;
2785 unsigned short seg_type = curseg->seg_type;
2787 bool reversed = false;
2789 sanity_check_seg_type(sbi, seg_type);
2791 /* f2fs_need_SSR() already forces to do this */
2792 if (!v_ops->get_victim(sbi, &segno, BG_GC, seg_type, alloc_mode, age)) {
2793 curseg->next_segno = segno;
2797 /* For node segments, let's do SSR more intensively */
2798 if (IS_NODESEG(seg_type)) {
2799 if (seg_type >= CURSEG_WARM_NODE) {
2801 i = CURSEG_COLD_NODE;
2803 i = CURSEG_HOT_NODE;
2805 cnt = NR_CURSEG_NODE_TYPE;
2807 if (seg_type >= CURSEG_WARM_DATA) {
2809 i = CURSEG_COLD_DATA;
2811 i = CURSEG_HOT_DATA;
2813 cnt = NR_CURSEG_DATA_TYPE;
2816 for (; cnt-- > 0; reversed ? i-- : i++) {
2819 if (!v_ops->get_victim(sbi, &segno, BG_GC, i, alloc_mode, age)) {
2820 curseg->next_segno = segno;
2825 /* find valid_blocks=0 in dirty list */
2826 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
2827 segno = get_free_segment(sbi);
2828 if (segno != NULL_SEGNO) {
2829 curseg->next_segno = segno;
2837 * flush out current segment and replace it with new segment
2838 * This function should be returned with success, otherwise BUG
2840 static void allocate_segment_by_default(struct f2fs_sb_info *sbi,
2841 int type, bool force)
2843 struct curseg_info *curseg = CURSEG_I(sbi, type);
2846 new_curseg(sbi, type, true);
2847 else if (!is_set_ckpt_flags(sbi, CP_CRC_RECOVERY_FLAG) &&
2848 curseg->seg_type == CURSEG_WARM_NODE)
2849 new_curseg(sbi, type, false);
2850 else if (curseg->alloc_type == LFS &&
2851 is_next_segment_free(sbi, curseg, type) &&
2852 likely(!is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
2853 new_curseg(sbi, type, false);
2854 else if (f2fs_need_SSR(sbi) &&
2855 get_ssr_segment(sbi, type, SSR, 0))
2856 change_curseg(sbi, type, true);
2858 new_curseg(sbi, type, false);
2860 stat_inc_seg_type(sbi, curseg);
2863 void f2fs_allocate_segment_for_resize(struct f2fs_sb_info *sbi, int type,
2864 unsigned int start, unsigned int end)
2866 struct curseg_info *curseg = CURSEG_I(sbi, type);
2869 down_read(&SM_I(sbi)->curseg_lock);
2870 mutex_lock(&curseg->curseg_mutex);
2871 down_write(&SIT_I(sbi)->sentry_lock);
2873 segno = CURSEG_I(sbi, type)->segno;
2874 if (segno < start || segno > end)
2877 if (f2fs_need_SSR(sbi) && get_ssr_segment(sbi, type, SSR, 0))
2878 change_curseg(sbi, type, true);
2880 new_curseg(sbi, type, true);
2882 stat_inc_seg_type(sbi, curseg);
2884 locate_dirty_segment(sbi, segno);
2886 up_write(&SIT_I(sbi)->sentry_lock);
2888 if (segno != curseg->segno)
2889 f2fs_notice(sbi, "For resize: curseg of type %d: %u ==> %u",
2890 type, segno, curseg->segno);
2892 mutex_unlock(&curseg->curseg_mutex);
2893 up_read(&SM_I(sbi)->curseg_lock);
2896 static void __allocate_new_segment(struct f2fs_sb_info *sbi, int type)
2898 struct curseg_info *curseg = CURSEG_I(sbi, type);
2899 unsigned int old_segno;
2901 if (!curseg->inited)
2904 if (!curseg->next_blkoff &&
2905 !get_valid_blocks(sbi, curseg->segno, false) &&
2906 !get_ckpt_valid_blocks(sbi, curseg->segno))
2910 old_segno = curseg->segno;
2911 SIT_I(sbi)->s_ops->allocate_segment(sbi, type, true);
2912 locate_dirty_segment(sbi, old_segno);
2915 void f2fs_allocate_new_segment(struct f2fs_sb_info *sbi, int type)
2917 down_write(&SIT_I(sbi)->sentry_lock);
2918 __allocate_new_segment(sbi, type);
2919 up_write(&SIT_I(sbi)->sentry_lock);
2922 void f2fs_allocate_new_segments(struct f2fs_sb_info *sbi)
2926 down_write(&SIT_I(sbi)->sentry_lock);
2927 for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++)
2928 __allocate_new_segment(sbi, i);
2929 up_write(&SIT_I(sbi)->sentry_lock);
2932 static const struct segment_allocation default_salloc_ops = {
2933 .allocate_segment = allocate_segment_by_default,
2936 bool f2fs_exist_trim_candidates(struct f2fs_sb_info *sbi,
2937 struct cp_control *cpc)
2939 __u64 trim_start = cpc->trim_start;
2940 bool has_candidate = false;
2942 down_write(&SIT_I(sbi)->sentry_lock);
2943 for (; cpc->trim_start <= cpc->trim_end; cpc->trim_start++) {
2944 if (add_discard_addrs(sbi, cpc, true)) {
2945 has_candidate = true;
2949 up_write(&SIT_I(sbi)->sentry_lock);
2951 cpc->trim_start = trim_start;
2952 return has_candidate;
2955 static unsigned int __issue_discard_cmd_range(struct f2fs_sb_info *sbi,
2956 struct discard_policy *dpolicy,
2957 unsigned int start, unsigned int end)
2959 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
2960 struct discard_cmd *prev_dc = NULL, *next_dc = NULL;
2961 struct rb_node **insert_p = NULL, *insert_parent = NULL;
2962 struct discard_cmd *dc;
2963 struct blk_plug plug;
2965 unsigned int trimmed = 0;
2970 mutex_lock(&dcc->cmd_lock);
2971 if (unlikely(dcc->rbtree_check))
2972 f2fs_bug_on(sbi, !f2fs_check_rb_tree_consistence(sbi,
2973 &dcc->root, false));
2975 dc = (struct discard_cmd *)f2fs_lookup_rb_tree_ret(&dcc->root,
2977 (struct rb_entry **)&prev_dc,
2978 (struct rb_entry **)&next_dc,
2979 &insert_p, &insert_parent, true, NULL);
2983 blk_start_plug(&plug);
2985 while (dc && dc->lstart <= end) {
2986 struct rb_node *node;
2989 if (dc->len < dpolicy->granularity)
2992 if (dc->state != D_PREP) {
2993 list_move_tail(&dc->list, &dcc->fstrim_list);
2997 err = __submit_discard_cmd(sbi, dpolicy, dc, &issued);
2999 if (issued >= dpolicy->max_requests) {
3000 start = dc->lstart + dc->len;
3003 __remove_discard_cmd(sbi, dc);
3005 blk_finish_plug(&plug);
3006 mutex_unlock(&dcc->cmd_lock);
3007 trimmed += __wait_all_discard_cmd(sbi, NULL);
3008 congestion_wait(BLK_RW_ASYNC, DEFAULT_IO_TIMEOUT);
3012 node = rb_next(&dc->rb_node);
3014 __remove_discard_cmd(sbi, dc);
3015 dc = rb_entry_safe(node, struct discard_cmd, rb_node);
3017 if (fatal_signal_pending(current))
3021 blk_finish_plug(&plug);
3022 mutex_unlock(&dcc->cmd_lock);
3027 int f2fs_trim_fs(struct f2fs_sb_info *sbi, struct fstrim_range *range)
3029 __u64 start = F2FS_BYTES_TO_BLK(range->start);
3030 __u64 end = start + F2FS_BYTES_TO_BLK(range->len) - 1;
3031 unsigned int start_segno, end_segno;
3032 block_t start_block, end_block;
3033 struct cp_control cpc;
3034 struct discard_policy dpolicy;
3035 unsigned long long trimmed = 0;
3037 bool need_align = f2fs_lfs_mode(sbi) && __is_large_section(sbi);
3039 if (start >= MAX_BLKADDR(sbi) || range->len < sbi->blocksize)
3042 if (end < MAIN_BLKADDR(sbi))
3045 if (is_sbi_flag_set(sbi, SBI_NEED_FSCK)) {
3046 f2fs_warn(sbi, "Found FS corruption, run fsck to fix.");
3047 return -EFSCORRUPTED;
3050 /* start/end segment number in main_area */
3051 start_segno = (start <= MAIN_BLKADDR(sbi)) ? 0 : GET_SEGNO(sbi, start);
3052 end_segno = (end >= MAX_BLKADDR(sbi)) ? MAIN_SEGS(sbi) - 1 :
3053 GET_SEGNO(sbi, end);
3055 start_segno = rounddown(start_segno, sbi->segs_per_sec);
3056 end_segno = roundup(end_segno + 1, sbi->segs_per_sec) - 1;
3059 cpc.reason = CP_DISCARD;
3060 cpc.trim_minlen = max_t(__u64, 1, F2FS_BYTES_TO_BLK(range->minlen));
3061 cpc.trim_start = start_segno;
3062 cpc.trim_end = end_segno;
3064 if (sbi->discard_blks == 0)
3067 down_write(&sbi->gc_lock);
3068 err = f2fs_write_checkpoint(sbi, &cpc);
3069 up_write(&sbi->gc_lock);
3074 * We filed discard candidates, but actually we don't need to wait for
3075 * all of them, since they'll be issued in idle time along with runtime
3076 * discard option. User configuration looks like using runtime discard
3077 * or periodic fstrim instead of it.
3079 if (f2fs_realtime_discard_enable(sbi))
3082 start_block = START_BLOCK(sbi, start_segno);
3083 end_block = START_BLOCK(sbi, end_segno + 1);
3085 __init_discard_policy(sbi, &dpolicy, DPOLICY_FSTRIM, cpc.trim_minlen);
3086 trimmed = __issue_discard_cmd_range(sbi, &dpolicy,
3087 start_block, end_block);
3089 trimmed += __wait_discard_cmd_range(sbi, &dpolicy,
3090 start_block, end_block);
3093 range->len = F2FS_BLK_TO_BYTES(trimmed);
3097 static bool __has_curseg_space(struct f2fs_sb_info *sbi,
3098 struct curseg_info *curseg)
3100 return curseg->next_blkoff < f2fs_usable_blks_in_seg(sbi,
3104 int f2fs_rw_hint_to_seg_type(enum rw_hint hint)
3107 case WRITE_LIFE_SHORT:
3108 return CURSEG_HOT_DATA;
3109 case WRITE_LIFE_EXTREME:
3110 return CURSEG_COLD_DATA;
3112 return CURSEG_WARM_DATA;
3116 /* This returns write hints for each segment type. This hints will be
3117 * passed down to block layer. There are mapping tables which depend on
3118 * the mount option 'whint_mode'.
3120 * 1) whint_mode=off. F2FS only passes down WRITE_LIFE_NOT_SET.
3122 * 2) whint_mode=user-based. F2FS tries to pass down hints given by users.
3126 * META WRITE_LIFE_NOT_SET
3130 * ioctl(COLD) COLD_DATA WRITE_LIFE_EXTREME
3131 * extension list " "
3134 * WRITE_LIFE_EXTREME COLD_DATA WRITE_LIFE_EXTREME
3135 * WRITE_LIFE_SHORT HOT_DATA WRITE_LIFE_SHORT
3136 * WRITE_LIFE_NOT_SET WARM_DATA WRITE_LIFE_NOT_SET
3137 * WRITE_LIFE_NONE " "
3138 * WRITE_LIFE_MEDIUM " "
3139 * WRITE_LIFE_LONG " "
3142 * WRITE_LIFE_EXTREME COLD_DATA WRITE_LIFE_EXTREME
3143 * WRITE_LIFE_SHORT HOT_DATA WRITE_LIFE_SHORT
3144 * WRITE_LIFE_NOT_SET WARM_DATA WRITE_LIFE_NOT_SET
3145 * WRITE_LIFE_NONE " WRITE_LIFE_NONE
3146 * WRITE_LIFE_MEDIUM " WRITE_LIFE_MEDIUM
3147 * WRITE_LIFE_LONG " WRITE_LIFE_LONG
3149 * 3) whint_mode=fs-based. F2FS passes down hints with its policy.
3153 * META WRITE_LIFE_MEDIUM;
3154 * HOT_NODE WRITE_LIFE_NOT_SET
3156 * COLD_NODE WRITE_LIFE_NONE
3157 * ioctl(COLD) COLD_DATA WRITE_LIFE_EXTREME
3158 * extension list " "
3161 * WRITE_LIFE_EXTREME COLD_DATA WRITE_LIFE_EXTREME
3162 * WRITE_LIFE_SHORT HOT_DATA WRITE_LIFE_SHORT
3163 * WRITE_LIFE_NOT_SET WARM_DATA WRITE_LIFE_LONG
3164 * WRITE_LIFE_NONE " "
3165 * WRITE_LIFE_MEDIUM " "
3166 * WRITE_LIFE_LONG " "
3169 * WRITE_LIFE_EXTREME COLD_DATA WRITE_LIFE_EXTREME
3170 * WRITE_LIFE_SHORT HOT_DATA WRITE_LIFE_SHORT
3171 * WRITE_LIFE_NOT_SET WARM_DATA WRITE_LIFE_NOT_SET
3172 * WRITE_LIFE_NONE " WRITE_LIFE_NONE
3173 * WRITE_LIFE_MEDIUM " WRITE_LIFE_MEDIUM
3174 * WRITE_LIFE_LONG " WRITE_LIFE_LONG
3177 enum rw_hint f2fs_io_type_to_rw_hint(struct f2fs_sb_info *sbi,
3178 enum page_type type, enum temp_type temp)
3180 if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_USER) {
3183 return WRITE_LIFE_NOT_SET;
3184 else if (temp == HOT)
3185 return WRITE_LIFE_SHORT;
3186 else if (temp == COLD)
3187 return WRITE_LIFE_EXTREME;
3189 return WRITE_LIFE_NOT_SET;
3191 } else if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_FS) {
3194 return WRITE_LIFE_LONG;
3195 else if (temp == HOT)
3196 return WRITE_LIFE_SHORT;
3197 else if (temp == COLD)
3198 return WRITE_LIFE_EXTREME;
3199 } else if (type == NODE) {
3200 if (temp == WARM || temp == HOT)
3201 return WRITE_LIFE_NOT_SET;
3202 else if (temp == COLD)
3203 return WRITE_LIFE_NONE;
3204 } else if (type == META) {
3205 return WRITE_LIFE_MEDIUM;
3208 return WRITE_LIFE_NOT_SET;
3211 static int __get_segment_type_2(struct f2fs_io_info *fio)
3213 if (fio->type == DATA)
3214 return CURSEG_HOT_DATA;
3216 return CURSEG_HOT_NODE;
3219 static int __get_segment_type_4(struct f2fs_io_info *fio)
3221 if (fio->type == DATA) {
3222 struct inode *inode = fio->page->mapping->host;
3224 if (S_ISDIR(inode->i_mode))
3225 return CURSEG_HOT_DATA;
3227 return CURSEG_COLD_DATA;
3229 if (IS_DNODE(fio->page) && is_cold_node(fio->page))
3230 return CURSEG_WARM_NODE;
3232 return CURSEG_COLD_NODE;
3236 static int __get_segment_type_6(struct f2fs_io_info *fio)
3238 if (fio->type == DATA) {
3239 struct inode *inode = fio->page->mapping->host;
3241 if (is_cold_data(fio->page)) {
3242 if (fio->sbi->am.atgc_enabled)
3243 return CURSEG_ALL_DATA_ATGC;
3245 return CURSEG_COLD_DATA;
3247 if (file_is_cold(inode) || f2fs_need_compress_data(inode))
3248 return CURSEG_COLD_DATA;
3249 if (file_is_hot(inode) ||
3250 is_inode_flag_set(inode, FI_HOT_DATA) ||
3251 f2fs_is_atomic_file(inode) ||
3252 f2fs_is_volatile_file(inode))
3253 return CURSEG_HOT_DATA;
3254 return f2fs_rw_hint_to_seg_type(inode->i_write_hint);
3256 if (IS_DNODE(fio->page))
3257 return is_cold_node(fio->page) ? CURSEG_WARM_NODE :
3259 return CURSEG_COLD_NODE;
3263 static int __get_segment_type(struct f2fs_io_info *fio)
3267 switch (F2FS_OPTION(fio->sbi).active_logs) {
3269 type = __get_segment_type_2(fio);
3272 type = __get_segment_type_4(fio);
3275 type = __get_segment_type_6(fio);
3278 f2fs_bug_on(fio->sbi, true);
3283 else if (IS_WARM(type))
3290 void f2fs_allocate_data_block(struct f2fs_sb_info *sbi, struct page *page,
3291 block_t old_blkaddr, block_t *new_blkaddr,
3292 struct f2fs_summary *sum, int type,
3293 struct f2fs_io_info *fio)
3295 struct sit_info *sit_i = SIT_I(sbi);
3296 struct curseg_info *curseg = CURSEG_I(sbi, type);
3297 unsigned long long old_mtime;
3298 bool from_gc = (type == CURSEG_ALL_DATA_ATGC);
3299 struct seg_entry *se = NULL;
3301 down_read(&SM_I(sbi)->curseg_lock);
3303 mutex_lock(&curseg->curseg_mutex);
3304 down_write(&sit_i->sentry_lock);
3307 f2fs_bug_on(sbi, GET_SEGNO(sbi, old_blkaddr) == NULL_SEGNO);
3308 se = get_seg_entry(sbi, GET_SEGNO(sbi, old_blkaddr));
3309 sanity_check_seg_type(sbi, se->type);
3310 f2fs_bug_on(sbi, IS_NODESEG(se->type));
3312 *new_blkaddr = NEXT_FREE_BLKADDR(sbi, curseg);
3314 f2fs_bug_on(sbi, curseg->next_blkoff >= sbi->blocks_per_seg);
3316 f2fs_wait_discard_bio(sbi, *new_blkaddr);
3319 * __add_sum_entry should be resided under the curseg_mutex
3320 * because, this function updates a summary entry in the
3321 * current summary block.
3323 __add_sum_entry(sbi, type, sum);
3325 __refresh_next_blkoff(sbi, curseg);
3327 stat_inc_block_count(sbi, curseg);
3330 old_mtime = get_segment_mtime(sbi, old_blkaddr);
3332 update_segment_mtime(sbi, old_blkaddr, 0);
3335 update_segment_mtime(sbi, *new_blkaddr, old_mtime);
3338 * SIT information should be updated before segment allocation,
3339 * since SSR needs latest valid block information.
3341 update_sit_entry(sbi, *new_blkaddr, 1);
3342 if (GET_SEGNO(sbi, old_blkaddr) != NULL_SEGNO)
3343 update_sit_entry(sbi, old_blkaddr, -1);
3345 if (!__has_curseg_space(sbi, curseg)) {
3347 get_atssr_segment(sbi, type, se->type,
3350 sit_i->s_ops->allocate_segment(sbi, type, false);
3353 * segment dirty status should be updated after segment allocation,
3354 * so we just need to update status only one time after previous
3355 * segment being closed.
3357 locate_dirty_segment(sbi, GET_SEGNO(sbi, old_blkaddr));
3358 locate_dirty_segment(sbi, GET_SEGNO(sbi, *new_blkaddr));
3360 up_write(&sit_i->sentry_lock);
3362 if (page && IS_NODESEG(type)) {
3363 fill_node_footer_blkaddr(page, NEXT_FREE_BLKADDR(sbi, curseg));
3365 f2fs_inode_chksum_set(sbi, page);
3368 if (F2FS_IO_ALIGNED(sbi))
3372 struct f2fs_bio_info *io;
3374 INIT_LIST_HEAD(&fio->list);
3375 fio->in_list = true;
3376 io = sbi->write_io[fio->type] + fio->temp;
3377 spin_lock(&io->io_lock);
3378 list_add_tail(&fio->list, &io->io_list);
3379 spin_unlock(&io->io_lock);
3382 mutex_unlock(&curseg->curseg_mutex);
3384 up_read(&SM_I(sbi)->curseg_lock);
3387 static void update_device_state(struct f2fs_io_info *fio)
3389 struct f2fs_sb_info *sbi = fio->sbi;
3390 unsigned int devidx;
3392 if (!f2fs_is_multi_device(sbi))
3395 devidx = f2fs_target_device_index(sbi, fio->new_blkaddr);
3397 /* update device state for fsync */
3398 f2fs_set_dirty_device(sbi, fio->ino, devidx, FLUSH_INO);
3400 /* update device state for checkpoint */
3401 if (!f2fs_test_bit(devidx, (char *)&sbi->dirty_device)) {
3402 spin_lock(&sbi->dev_lock);
3403 f2fs_set_bit(devidx, (char *)&sbi->dirty_device);
3404 spin_unlock(&sbi->dev_lock);
3408 static void do_write_page(struct f2fs_summary *sum, struct f2fs_io_info *fio)
3410 int type = __get_segment_type(fio);
3411 bool keep_order = (f2fs_lfs_mode(fio->sbi) && type == CURSEG_COLD_DATA);
3414 down_read(&fio->sbi->io_order_lock);
3416 f2fs_allocate_data_block(fio->sbi, fio->page, fio->old_blkaddr,
3417 &fio->new_blkaddr, sum, type, fio);
3418 if (GET_SEGNO(fio->sbi, fio->old_blkaddr) != NULL_SEGNO)
3419 invalidate_mapping_pages(META_MAPPING(fio->sbi),
3420 fio->old_blkaddr, fio->old_blkaddr);
3422 /* writeout dirty page into bdev */
3423 f2fs_submit_page_write(fio);
3425 fio->old_blkaddr = fio->new_blkaddr;
3429 update_device_state(fio);
3432 up_read(&fio->sbi->io_order_lock);
3435 void f2fs_do_write_meta_page(struct f2fs_sb_info *sbi, struct page *page,
3436 enum iostat_type io_type)
3438 struct f2fs_io_info fio = {
3443 .op_flags = REQ_SYNC | REQ_META | REQ_PRIO,
3444 .old_blkaddr = page->index,
3445 .new_blkaddr = page->index,
3447 .encrypted_page = NULL,
3451 if (unlikely(page->index >= MAIN_BLKADDR(sbi)))
3452 fio.op_flags &= ~REQ_META;
3454 set_page_writeback(page);
3455 ClearPageError(page);
3456 f2fs_submit_page_write(&fio);
3458 stat_inc_meta_count(sbi, page->index);
3459 f2fs_update_iostat(sbi, io_type, F2FS_BLKSIZE);
3462 void f2fs_do_write_node_page(unsigned int nid, struct f2fs_io_info *fio)
3464 struct f2fs_summary sum;
3466 set_summary(&sum, nid, 0, 0);
3467 do_write_page(&sum, fio);
3469 f2fs_update_iostat(fio->sbi, fio->io_type, F2FS_BLKSIZE);
3472 void f2fs_outplace_write_data(struct dnode_of_data *dn,
3473 struct f2fs_io_info *fio)
3475 struct f2fs_sb_info *sbi = fio->sbi;
3476 struct f2fs_summary sum;
3478 f2fs_bug_on(sbi, dn->data_blkaddr == NULL_ADDR);
3479 set_summary(&sum, dn->nid, dn->ofs_in_node, fio->version);
3480 do_write_page(&sum, fio);
3481 f2fs_update_data_blkaddr(dn, fio->new_blkaddr);
3483 f2fs_update_iostat(sbi, fio->io_type, F2FS_BLKSIZE);
3486 int f2fs_inplace_write_data(struct f2fs_io_info *fio)
3489 struct f2fs_sb_info *sbi = fio->sbi;
3492 fio->new_blkaddr = fio->old_blkaddr;
3493 /* i/o temperature is needed for passing down write hints */
3494 __get_segment_type(fio);
3496 segno = GET_SEGNO(sbi, fio->new_blkaddr);
3498 if (!IS_DATASEG(get_seg_entry(sbi, segno)->type)) {
3499 set_sbi_flag(sbi, SBI_NEED_FSCK);
3500 f2fs_warn(sbi, "%s: incorrect segment(%u) type, run fsck to fix.",
3502 return -EFSCORRUPTED;
3505 stat_inc_inplace_blocks(fio->sbi);
3507 if (fio->bio && !(SM_I(sbi)->ipu_policy & (1 << F2FS_IPU_NOCACHE)))
3508 err = f2fs_merge_page_bio(fio);
3510 err = f2fs_submit_page_bio(fio);
3512 update_device_state(fio);
3513 f2fs_update_iostat(fio->sbi, fio->io_type, F2FS_BLKSIZE);
3519 static inline int __f2fs_get_curseg(struct f2fs_sb_info *sbi,
3524 for (i = CURSEG_HOT_DATA; i < NO_CHECK_TYPE; i++) {
3525 if (CURSEG_I(sbi, i)->segno == segno)
3531 void f2fs_do_replace_block(struct f2fs_sb_info *sbi, struct f2fs_summary *sum,
3532 block_t old_blkaddr, block_t new_blkaddr,
3533 bool recover_curseg, bool recover_newaddr,
3536 struct sit_info *sit_i = SIT_I(sbi);
3537 struct curseg_info *curseg;
3538 unsigned int segno, old_cursegno;
3539 struct seg_entry *se;
3541 unsigned short old_blkoff;
3543 segno = GET_SEGNO(sbi, new_blkaddr);
3544 se = get_seg_entry(sbi, segno);
3547 down_write(&SM_I(sbi)->curseg_lock);
3549 if (!recover_curseg) {
3550 /* for recovery flow */
3551 if (se->valid_blocks == 0 && !IS_CURSEG(sbi, segno)) {
3552 if (old_blkaddr == NULL_ADDR)
3553 type = CURSEG_COLD_DATA;
3555 type = CURSEG_WARM_DATA;
3558 if (IS_CURSEG(sbi, segno)) {
3559 /* se->type is volatile as SSR allocation */
3560 type = __f2fs_get_curseg(sbi, segno);
3561 f2fs_bug_on(sbi, type == NO_CHECK_TYPE);
3563 type = CURSEG_WARM_DATA;
3567 f2fs_bug_on(sbi, !IS_DATASEG(type));
3568 curseg = CURSEG_I(sbi, type);
3570 mutex_lock(&curseg->curseg_mutex);
3571 down_write(&sit_i->sentry_lock);
3573 old_cursegno = curseg->segno;
3574 old_blkoff = curseg->next_blkoff;
3576 /* change the current segment */
3577 if (segno != curseg->segno) {
3578 curseg->next_segno = segno;
3579 change_curseg(sbi, type, true);
3582 curseg->next_blkoff = GET_BLKOFF_FROM_SEG0(sbi, new_blkaddr);
3583 __add_sum_entry(sbi, type, sum);
3585 if (!recover_curseg || recover_newaddr) {
3587 update_segment_mtime(sbi, new_blkaddr, 0);
3588 update_sit_entry(sbi, new_blkaddr, 1);
3590 if (GET_SEGNO(sbi, old_blkaddr) != NULL_SEGNO) {
3591 invalidate_mapping_pages(META_MAPPING(sbi),
3592 old_blkaddr, old_blkaddr);
3594 update_segment_mtime(sbi, old_blkaddr, 0);
3595 update_sit_entry(sbi, old_blkaddr, -1);
3598 locate_dirty_segment(sbi, GET_SEGNO(sbi, old_blkaddr));
3599 locate_dirty_segment(sbi, GET_SEGNO(sbi, new_blkaddr));
3601 locate_dirty_segment(sbi, old_cursegno);
3603 if (recover_curseg) {
3604 if (old_cursegno != curseg->segno) {
3605 curseg->next_segno = old_cursegno;
3606 change_curseg(sbi, type, true);
3608 curseg->next_blkoff = old_blkoff;
3611 up_write(&sit_i->sentry_lock);
3612 mutex_unlock(&curseg->curseg_mutex);
3613 up_write(&SM_I(sbi)->curseg_lock);
3616 void f2fs_replace_block(struct f2fs_sb_info *sbi, struct dnode_of_data *dn,
3617 block_t old_addr, block_t new_addr,
3618 unsigned char version, bool recover_curseg,
3619 bool recover_newaddr)
3621 struct f2fs_summary sum;
3623 set_summary(&sum, dn->nid, dn->ofs_in_node, version);
3625 f2fs_do_replace_block(sbi, &sum, old_addr, new_addr,
3626 recover_curseg, recover_newaddr, false);
3628 f2fs_update_data_blkaddr(dn, new_addr);
3631 void f2fs_wait_on_page_writeback(struct page *page,
3632 enum page_type type, bool ordered, bool locked)
3634 if (PageWriteback(page)) {
3635 struct f2fs_sb_info *sbi = F2FS_P_SB(page);
3637 /* submit cached LFS IO */
3638 f2fs_submit_merged_write_cond(sbi, NULL, page, 0, type);
3639 /* sbumit cached IPU IO */
3640 f2fs_submit_merged_ipu_write(sbi, NULL, page);
3642 wait_on_page_writeback(page);
3643 f2fs_bug_on(sbi, locked && PageWriteback(page));
3645 wait_for_stable_page(page);
3650 void f2fs_wait_on_block_writeback(struct inode *inode, block_t blkaddr)
3652 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3655 if (!f2fs_post_read_required(inode))
3658 if (!__is_valid_data_blkaddr(blkaddr))
3661 cpage = find_lock_page(META_MAPPING(sbi), blkaddr);
3663 f2fs_wait_on_page_writeback(cpage, DATA, true, true);
3664 f2fs_put_page(cpage, 1);
3668 void f2fs_wait_on_block_writeback_range(struct inode *inode, block_t blkaddr,
3673 for (i = 0; i < len; i++)
3674 f2fs_wait_on_block_writeback(inode, blkaddr + i);
3677 static int read_compacted_summaries(struct f2fs_sb_info *sbi)
3679 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
3680 struct curseg_info *seg_i;
3681 unsigned char *kaddr;
3686 start = start_sum_block(sbi);
3688 page = f2fs_get_meta_page(sbi, start++);
3690 return PTR_ERR(page);
3691 kaddr = (unsigned char *)page_address(page);
3693 /* Step 1: restore nat cache */
3694 seg_i = CURSEG_I(sbi, CURSEG_HOT_DATA);
3695 memcpy(seg_i->journal, kaddr, SUM_JOURNAL_SIZE);
3697 /* Step 2: restore sit cache */
3698 seg_i = CURSEG_I(sbi, CURSEG_COLD_DATA);
3699 memcpy(seg_i->journal, kaddr + SUM_JOURNAL_SIZE, SUM_JOURNAL_SIZE);
3700 offset = 2 * SUM_JOURNAL_SIZE;
3702 /* Step 3: restore summary entries */
3703 for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) {
3704 unsigned short blk_off;
3707 seg_i = CURSEG_I(sbi, i);
3708 segno = le32_to_cpu(ckpt->cur_data_segno[i]);
3709 blk_off = le16_to_cpu(ckpt->cur_data_blkoff[i]);
3710 seg_i->next_segno = segno;
3711 reset_curseg(sbi, i, 0);
3712 seg_i->alloc_type = ckpt->alloc_type[i];
3713 seg_i->next_blkoff = blk_off;
3715 if (seg_i->alloc_type == SSR)
3716 blk_off = sbi->blocks_per_seg;
3718 for (j = 0; j < blk_off; j++) {
3719 struct f2fs_summary *s;
3720 s = (struct f2fs_summary *)(kaddr + offset);
3721 seg_i->sum_blk->entries[j] = *s;
3722 offset += SUMMARY_SIZE;
3723 if (offset + SUMMARY_SIZE <= PAGE_SIZE -
3727 f2fs_put_page(page, 1);
3730 page = f2fs_get_meta_page(sbi, start++);
3732 return PTR_ERR(page);
3733 kaddr = (unsigned char *)page_address(page);
3737 f2fs_put_page(page, 1);
3741 static int read_normal_summaries(struct f2fs_sb_info *sbi, int type)
3743 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
3744 struct f2fs_summary_block *sum;
3745 struct curseg_info *curseg;
3747 unsigned short blk_off;
3748 unsigned int segno = 0;
3749 block_t blk_addr = 0;
3752 /* get segment number and block addr */
3753 if (IS_DATASEG(type)) {
3754 segno = le32_to_cpu(ckpt->cur_data_segno[type]);
3755 blk_off = le16_to_cpu(ckpt->cur_data_blkoff[type -
3757 if (__exist_node_summaries(sbi))
3758 blk_addr = sum_blk_addr(sbi, NR_CURSEG_PERSIST_TYPE, type);
3760 blk_addr = sum_blk_addr(sbi, NR_CURSEG_DATA_TYPE, type);
3762 segno = le32_to_cpu(ckpt->cur_node_segno[type -
3764 blk_off = le16_to_cpu(ckpt->cur_node_blkoff[type -
3766 if (__exist_node_summaries(sbi))
3767 blk_addr = sum_blk_addr(sbi, NR_CURSEG_NODE_TYPE,
3768 type - CURSEG_HOT_NODE);
3770 blk_addr = GET_SUM_BLOCK(sbi, segno);
3773 new = f2fs_get_meta_page(sbi, blk_addr);
3775 return PTR_ERR(new);
3776 sum = (struct f2fs_summary_block *)page_address(new);
3778 if (IS_NODESEG(type)) {
3779 if (__exist_node_summaries(sbi)) {
3780 struct f2fs_summary *ns = &sum->entries[0];
3782 for (i = 0; i < sbi->blocks_per_seg; i++, ns++) {
3784 ns->ofs_in_node = 0;
3787 err = f2fs_restore_node_summary(sbi, segno, sum);
3793 /* set uncompleted segment to curseg */
3794 curseg = CURSEG_I(sbi, type);
3795 mutex_lock(&curseg->curseg_mutex);
3797 /* update journal info */
3798 down_write(&curseg->journal_rwsem);
3799 memcpy(curseg->journal, &sum->journal, SUM_JOURNAL_SIZE);
3800 up_write(&curseg->journal_rwsem);
3802 memcpy(curseg->sum_blk->entries, sum->entries, SUM_ENTRY_SIZE);
3803 memcpy(&curseg->sum_blk->footer, &sum->footer, SUM_FOOTER_SIZE);
3804 curseg->next_segno = segno;
3805 reset_curseg(sbi, type, 0);
3806 curseg->alloc_type = ckpt->alloc_type[type];
3807 curseg->next_blkoff = blk_off;
3808 mutex_unlock(&curseg->curseg_mutex);
3810 f2fs_put_page(new, 1);
3814 static int restore_curseg_summaries(struct f2fs_sb_info *sbi)
3816 struct f2fs_journal *sit_j = CURSEG_I(sbi, CURSEG_COLD_DATA)->journal;
3817 struct f2fs_journal *nat_j = CURSEG_I(sbi, CURSEG_HOT_DATA)->journal;
3818 int type = CURSEG_HOT_DATA;
3821 if (is_set_ckpt_flags(sbi, CP_COMPACT_SUM_FLAG)) {
3822 int npages = f2fs_npages_for_summary_flush(sbi, true);
3825 f2fs_ra_meta_pages(sbi, start_sum_block(sbi), npages,
3828 /* restore for compacted data summary */
3829 err = read_compacted_summaries(sbi);
3832 type = CURSEG_HOT_NODE;
3835 if (__exist_node_summaries(sbi))
3836 f2fs_ra_meta_pages(sbi,
3837 sum_blk_addr(sbi, NR_CURSEG_PERSIST_TYPE, type),
3838 NR_CURSEG_PERSIST_TYPE - type, META_CP, true);
3840 for (; type <= CURSEG_COLD_NODE; type++) {
3841 err = read_normal_summaries(sbi, type);
3846 /* sanity check for summary blocks */
3847 if (nats_in_cursum(nat_j) > NAT_JOURNAL_ENTRIES ||
3848 sits_in_cursum(sit_j) > SIT_JOURNAL_ENTRIES) {
3849 f2fs_err(sbi, "invalid journal entries nats %u sits %u\n",
3850 nats_in_cursum(nat_j), sits_in_cursum(sit_j));
3857 static void write_compacted_summaries(struct f2fs_sb_info *sbi, block_t blkaddr)
3860 unsigned char *kaddr;
3861 struct f2fs_summary *summary;
3862 struct curseg_info *seg_i;
3863 int written_size = 0;
3866 page = f2fs_grab_meta_page(sbi, blkaddr++);
3867 kaddr = (unsigned char *)page_address(page);
3868 memset(kaddr, 0, PAGE_SIZE);
3870 /* Step 1: write nat cache */
3871 seg_i = CURSEG_I(sbi, CURSEG_HOT_DATA);
3872 memcpy(kaddr, seg_i->journal, SUM_JOURNAL_SIZE);
3873 written_size += SUM_JOURNAL_SIZE;
3875 /* Step 2: write sit cache */
3876 seg_i = CURSEG_I(sbi, CURSEG_COLD_DATA);
3877 memcpy(kaddr + written_size, seg_i->journal, SUM_JOURNAL_SIZE);
3878 written_size += SUM_JOURNAL_SIZE;
3880 /* Step 3: write summary entries */
3881 for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) {
3882 unsigned short blkoff;
3883 seg_i = CURSEG_I(sbi, i);
3884 if (sbi->ckpt->alloc_type[i] == SSR)
3885 blkoff = sbi->blocks_per_seg;
3887 blkoff = curseg_blkoff(sbi, i);
3889 for (j = 0; j < blkoff; j++) {
3891 page = f2fs_grab_meta_page(sbi, blkaddr++);
3892 kaddr = (unsigned char *)page_address(page);
3893 memset(kaddr, 0, PAGE_SIZE);
3896 summary = (struct f2fs_summary *)(kaddr + written_size);
3897 *summary = seg_i->sum_blk->entries[j];
3898 written_size += SUMMARY_SIZE;
3900 if (written_size + SUMMARY_SIZE <= PAGE_SIZE -
3904 set_page_dirty(page);
3905 f2fs_put_page(page, 1);
3910 set_page_dirty(page);
3911 f2fs_put_page(page, 1);
3915 static void write_normal_summaries(struct f2fs_sb_info *sbi,
3916 block_t blkaddr, int type)
3919 if (IS_DATASEG(type))
3920 end = type + NR_CURSEG_DATA_TYPE;
3922 end = type + NR_CURSEG_NODE_TYPE;
3924 for (i = type; i < end; i++)
3925 write_current_sum_page(sbi, i, blkaddr + (i - type));
3928 void f2fs_write_data_summaries(struct f2fs_sb_info *sbi, block_t start_blk)
3930 if (is_set_ckpt_flags(sbi, CP_COMPACT_SUM_FLAG))
3931 write_compacted_summaries(sbi, start_blk);
3933 write_normal_summaries(sbi, start_blk, CURSEG_HOT_DATA);
3936 void f2fs_write_node_summaries(struct f2fs_sb_info *sbi, block_t start_blk)
3938 write_normal_summaries(sbi, start_blk, CURSEG_HOT_NODE);
3941 int f2fs_lookup_journal_in_cursum(struct f2fs_journal *journal, int type,
3942 unsigned int val, int alloc)
3946 if (type == NAT_JOURNAL) {
3947 for (i = 0; i < nats_in_cursum(journal); i++) {
3948 if (le32_to_cpu(nid_in_journal(journal, i)) == val)
3951 if (alloc && __has_cursum_space(journal, 1, NAT_JOURNAL))
3952 return update_nats_in_cursum(journal, 1);
3953 } else if (type == SIT_JOURNAL) {
3954 for (i = 0; i < sits_in_cursum(journal); i++)
3955 if (le32_to_cpu(segno_in_journal(journal, i)) == val)
3957 if (alloc && __has_cursum_space(journal, 1, SIT_JOURNAL))
3958 return update_sits_in_cursum(journal, 1);
3963 static struct page *get_current_sit_page(struct f2fs_sb_info *sbi,
3966 return f2fs_get_meta_page(sbi, current_sit_addr(sbi, segno));
3969 static struct page *get_next_sit_page(struct f2fs_sb_info *sbi,
3972 struct sit_info *sit_i = SIT_I(sbi);
3974 pgoff_t src_off, dst_off;
3976 src_off = current_sit_addr(sbi, start);
3977 dst_off = next_sit_addr(sbi, src_off);
3979 page = f2fs_grab_meta_page(sbi, dst_off);
3980 seg_info_to_sit_page(sbi, page, start);
3982 set_page_dirty(page);
3983 set_to_next_sit(sit_i, start);
3988 static struct sit_entry_set *grab_sit_entry_set(void)
3990 struct sit_entry_set *ses =
3991 f2fs_kmem_cache_alloc(sit_entry_set_slab, GFP_NOFS);
3994 INIT_LIST_HEAD(&ses->set_list);
3998 static void release_sit_entry_set(struct sit_entry_set *ses)
4000 list_del(&ses->set_list);
4001 kmem_cache_free(sit_entry_set_slab, ses);
4004 static void adjust_sit_entry_set(struct sit_entry_set *ses,
4005 struct list_head *head)
4007 struct sit_entry_set *next = ses;
4009 if (list_is_last(&ses->set_list, head))
4012 list_for_each_entry_continue(next, head, set_list)
4013 if (ses->entry_cnt <= next->entry_cnt)
4016 list_move_tail(&ses->set_list, &next->set_list);
4019 static void add_sit_entry(unsigned int segno, struct list_head *head)
4021 struct sit_entry_set *ses;
4022 unsigned int start_segno = START_SEGNO(segno);
4024 list_for_each_entry(ses, head, set_list) {
4025 if (ses->start_segno == start_segno) {
4027 adjust_sit_entry_set(ses, head);
4032 ses = grab_sit_entry_set();
4034 ses->start_segno = start_segno;
4036 list_add(&ses->set_list, head);
4039 static void add_sits_in_set(struct f2fs_sb_info *sbi)
4041 struct f2fs_sm_info *sm_info = SM_I(sbi);
4042 struct list_head *set_list = &sm_info->sit_entry_set;
4043 unsigned long *bitmap = SIT_I(sbi)->dirty_sentries_bitmap;
4046 for_each_set_bit(segno, bitmap, MAIN_SEGS(sbi))
4047 add_sit_entry(segno, set_list);
4050 static void remove_sits_in_journal(struct f2fs_sb_info *sbi)
4052 struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA);
4053 struct f2fs_journal *journal = curseg->journal;
4056 down_write(&curseg->journal_rwsem);
4057 for (i = 0; i < sits_in_cursum(journal); i++) {
4061 segno = le32_to_cpu(segno_in_journal(journal, i));
4062 dirtied = __mark_sit_entry_dirty(sbi, segno);
4065 add_sit_entry(segno, &SM_I(sbi)->sit_entry_set);
4067 update_sits_in_cursum(journal, -i);
4068 up_write(&curseg->journal_rwsem);
4072 * CP calls this function, which flushes SIT entries including sit_journal,
4073 * and moves prefree segs to free segs.
4075 void f2fs_flush_sit_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc)
4077 struct sit_info *sit_i = SIT_I(sbi);
4078 unsigned long *bitmap = sit_i->dirty_sentries_bitmap;
4079 struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA);
4080 struct f2fs_journal *journal = curseg->journal;
4081 struct sit_entry_set *ses, *tmp;
4082 struct list_head *head = &SM_I(sbi)->sit_entry_set;
4083 bool to_journal = !is_sbi_flag_set(sbi, SBI_IS_RESIZEFS);
4084 struct seg_entry *se;
4086 down_write(&sit_i->sentry_lock);
4088 if (!sit_i->dirty_sentries)
4092 * add and account sit entries of dirty bitmap in sit entry
4095 add_sits_in_set(sbi);
4098 * if there are no enough space in journal to store dirty sit
4099 * entries, remove all entries from journal and add and account
4100 * them in sit entry set.
4102 if (!__has_cursum_space(journal, sit_i->dirty_sentries, SIT_JOURNAL) ||
4104 remove_sits_in_journal(sbi);
4107 * there are two steps to flush sit entries:
4108 * #1, flush sit entries to journal in current cold data summary block.
4109 * #2, flush sit entries to sit page.
4111 list_for_each_entry_safe(ses, tmp, head, set_list) {
4112 struct page *page = NULL;
4113 struct f2fs_sit_block *raw_sit = NULL;
4114 unsigned int start_segno = ses->start_segno;
4115 unsigned int end = min(start_segno + SIT_ENTRY_PER_BLOCK,
4116 (unsigned long)MAIN_SEGS(sbi));
4117 unsigned int segno = start_segno;
4120 !__has_cursum_space(journal, ses->entry_cnt, SIT_JOURNAL))
4124 down_write(&curseg->journal_rwsem);
4126 page = get_next_sit_page(sbi, start_segno);
4127 raw_sit = page_address(page);
4130 /* flush dirty sit entries in region of current sit set */
4131 for_each_set_bit_from(segno, bitmap, end) {
4132 int offset, sit_offset;
4134 se = get_seg_entry(sbi, segno);
4135 #ifdef CONFIG_F2FS_CHECK_FS
4136 if (memcmp(se->cur_valid_map, se->cur_valid_map_mir,
4137 SIT_VBLOCK_MAP_SIZE))
4138 f2fs_bug_on(sbi, 1);
4141 /* add discard candidates */
4142 if (!(cpc->reason & CP_DISCARD)) {
4143 cpc->trim_start = segno;
4144 add_discard_addrs(sbi, cpc, false);
4148 offset = f2fs_lookup_journal_in_cursum(journal,
4149 SIT_JOURNAL, segno, 1);
4150 f2fs_bug_on(sbi, offset < 0);
4151 segno_in_journal(journal, offset) =
4153 seg_info_to_raw_sit(se,
4154 &sit_in_journal(journal, offset));
4155 check_block_count(sbi, segno,
4156 &sit_in_journal(journal, offset));
4158 sit_offset = SIT_ENTRY_OFFSET(sit_i, segno);
4159 seg_info_to_raw_sit(se,
4160 &raw_sit->entries[sit_offset]);
4161 check_block_count(sbi, segno,
4162 &raw_sit->entries[sit_offset]);
4165 __clear_bit(segno, bitmap);
4166 sit_i->dirty_sentries--;
4171 up_write(&curseg->journal_rwsem);
4173 f2fs_put_page(page, 1);
4175 f2fs_bug_on(sbi, ses->entry_cnt);
4176 release_sit_entry_set(ses);
4179 f2fs_bug_on(sbi, !list_empty(head));
4180 f2fs_bug_on(sbi, sit_i->dirty_sentries);
4182 if (cpc->reason & CP_DISCARD) {
4183 __u64 trim_start = cpc->trim_start;
4185 for (; cpc->trim_start <= cpc->trim_end; cpc->trim_start++)
4186 add_discard_addrs(sbi, cpc, false);
4188 cpc->trim_start = trim_start;
4190 up_write(&sit_i->sentry_lock);
4192 set_prefree_as_free_segments(sbi);
4195 static int build_sit_info(struct f2fs_sb_info *sbi)
4197 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
4198 struct sit_info *sit_i;
4199 unsigned int sit_segs, start;
4200 char *src_bitmap, *bitmap;
4201 unsigned int bitmap_size, main_bitmap_size, sit_bitmap_size;
4203 /* allocate memory for SIT information */
4204 sit_i = f2fs_kzalloc(sbi, sizeof(struct sit_info), GFP_KERNEL);
4208 SM_I(sbi)->sit_info = sit_i;
4211 f2fs_kvzalloc(sbi, array_size(sizeof(struct seg_entry),
4214 if (!sit_i->sentries)
4217 main_bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi));
4218 sit_i->dirty_sentries_bitmap = f2fs_kvzalloc(sbi, main_bitmap_size,
4220 if (!sit_i->dirty_sentries_bitmap)
4223 #ifdef CONFIG_F2FS_CHECK_FS
4224 bitmap_size = MAIN_SEGS(sbi) * SIT_VBLOCK_MAP_SIZE * 4;
4226 bitmap_size = MAIN_SEGS(sbi) * SIT_VBLOCK_MAP_SIZE * 3;
4228 sit_i->bitmap = f2fs_kvzalloc(sbi, bitmap_size, GFP_KERNEL);
4232 bitmap = sit_i->bitmap;
4234 for (start = 0; start < MAIN_SEGS(sbi); start++) {
4235 sit_i->sentries[start].cur_valid_map = bitmap;
4236 bitmap += SIT_VBLOCK_MAP_SIZE;
4238 sit_i->sentries[start].ckpt_valid_map = bitmap;
4239 bitmap += SIT_VBLOCK_MAP_SIZE;
4241 #ifdef CONFIG_F2FS_CHECK_FS
4242 sit_i->sentries[start].cur_valid_map_mir = bitmap;
4243 bitmap += SIT_VBLOCK_MAP_SIZE;
4246 sit_i->sentries[start].discard_map = bitmap;
4247 bitmap += SIT_VBLOCK_MAP_SIZE;
4250 sit_i->tmp_map = f2fs_kzalloc(sbi, SIT_VBLOCK_MAP_SIZE, GFP_KERNEL);
4251 if (!sit_i->tmp_map)
4254 if (__is_large_section(sbi)) {
4255 sit_i->sec_entries =
4256 f2fs_kvzalloc(sbi, array_size(sizeof(struct sec_entry),
4259 if (!sit_i->sec_entries)
4263 /* get information related with SIT */
4264 sit_segs = le32_to_cpu(raw_super->segment_count_sit) >> 1;
4266 /* setup SIT bitmap from ckeckpoint pack */
4267 sit_bitmap_size = __bitmap_size(sbi, SIT_BITMAP);
4268 src_bitmap = __bitmap_ptr(sbi, SIT_BITMAP);
4270 sit_i->sit_bitmap = kmemdup(src_bitmap, sit_bitmap_size, GFP_KERNEL);
4271 if (!sit_i->sit_bitmap)
4274 #ifdef CONFIG_F2FS_CHECK_FS
4275 sit_i->sit_bitmap_mir = kmemdup(src_bitmap,
4276 sit_bitmap_size, GFP_KERNEL);
4277 if (!sit_i->sit_bitmap_mir)
4280 sit_i->invalid_segmap = f2fs_kvzalloc(sbi,
4281 main_bitmap_size, GFP_KERNEL);
4282 if (!sit_i->invalid_segmap)
4286 /* init SIT information */
4287 sit_i->s_ops = &default_salloc_ops;
4289 sit_i->sit_base_addr = le32_to_cpu(raw_super->sit_blkaddr);
4290 sit_i->sit_blocks = sit_segs << sbi->log_blocks_per_seg;
4291 sit_i->written_valid_blocks = 0;
4292 sit_i->bitmap_size = sit_bitmap_size;
4293 sit_i->dirty_sentries = 0;
4294 sit_i->sents_per_block = SIT_ENTRY_PER_BLOCK;
4295 sit_i->elapsed_time = le64_to_cpu(sbi->ckpt->elapsed_time);
4296 sit_i->mounted_time = ktime_get_boottime_seconds();
4297 init_rwsem(&sit_i->sentry_lock);
4301 static int build_free_segmap(struct f2fs_sb_info *sbi)
4303 struct free_segmap_info *free_i;
4304 unsigned int bitmap_size, sec_bitmap_size;
4306 /* allocate memory for free segmap information */
4307 free_i = f2fs_kzalloc(sbi, sizeof(struct free_segmap_info), GFP_KERNEL);
4311 SM_I(sbi)->free_info = free_i;
4313 bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi));
4314 free_i->free_segmap = f2fs_kvmalloc(sbi, bitmap_size, GFP_KERNEL);
4315 if (!free_i->free_segmap)
4318 sec_bitmap_size = f2fs_bitmap_size(MAIN_SECS(sbi));
4319 free_i->free_secmap = f2fs_kvmalloc(sbi, sec_bitmap_size, GFP_KERNEL);
4320 if (!free_i->free_secmap)
4323 /* set all segments as dirty temporarily */
4324 memset(free_i->free_segmap, 0xff, bitmap_size);
4325 memset(free_i->free_secmap, 0xff, sec_bitmap_size);
4327 /* init free segmap information */
4328 free_i->start_segno = GET_SEGNO_FROM_SEG0(sbi, MAIN_BLKADDR(sbi));
4329 free_i->free_segments = 0;
4330 free_i->free_sections = 0;
4331 spin_lock_init(&free_i->segmap_lock);
4335 static int build_curseg(struct f2fs_sb_info *sbi)
4337 struct curseg_info *array;
4340 array = f2fs_kzalloc(sbi, array_size(NR_CURSEG_TYPE,
4341 sizeof(*array)), GFP_KERNEL);
4345 SM_I(sbi)->curseg_array = array;
4347 for (i = 0; i < NO_CHECK_TYPE; i++) {
4348 mutex_init(&array[i].curseg_mutex);
4349 array[i].sum_blk = f2fs_kzalloc(sbi, PAGE_SIZE, GFP_KERNEL);
4350 if (!array[i].sum_blk)
4352 init_rwsem(&array[i].journal_rwsem);
4353 array[i].journal = f2fs_kzalloc(sbi,
4354 sizeof(struct f2fs_journal), GFP_KERNEL);
4355 if (!array[i].journal)
4357 if (i < NR_PERSISTENT_LOG)
4358 array[i].seg_type = CURSEG_HOT_DATA + i;
4359 else if (i == CURSEG_COLD_DATA_PINNED)
4360 array[i].seg_type = CURSEG_COLD_DATA;
4361 else if (i == CURSEG_ALL_DATA_ATGC)
4362 array[i].seg_type = CURSEG_COLD_DATA;
4363 array[i].segno = NULL_SEGNO;
4364 array[i].next_blkoff = 0;
4365 array[i].inited = false;
4367 return restore_curseg_summaries(sbi);
4370 static int build_sit_entries(struct f2fs_sb_info *sbi)
4372 struct sit_info *sit_i = SIT_I(sbi);
4373 struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA);
4374 struct f2fs_journal *journal = curseg->journal;
4375 struct seg_entry *se;
4376 struct f2fs_sit_entry sit;
4377 int sit_blk_cnt = SIT_BLK_CNT(sbi);
4378 unsigned int i, start, end;
4379 unsigned int readed, start_blk = 0;
4381 block_t total_node_blocks = 0;
4384 readed = f2fs_ra_meta_pages(sbi, start_blk, BIO_MAX_PAGES,
4387 start = start_blk * sit_i->sents_per_block;
4388 end = (start_blk + readed) * sit_i->sents_per_block;
4390 for (; start < end && start < MAIN_SEGS(sbi); start++) {
4391 struct f2fs_sit_block *sit_blk;
4394 se = &sit_i->sentries[start];
4395 page = get_current_sit_page(sbi, start);
4397 return PTR_ERR(page);
4398 sit_blk = (struct f2fs_sit_block *)page_address(page);
4399 sit = sit_blk->entries[SIT_ENTRY_OFFSET(sit_i, start)];
4400 f2fs_put_page(page, 1);
4402 err = check_block_count(sbi, start, &sit);
4405 seg_info_from_raw_sit(se, &sit);
4406 if (IS_NODESEG(se->type))
4407 total_node_blocks += se->valid_blocks;
4409 /* build discard map only one time */
4410 if (is_set_ckpt_flags(sbi, CP_TRIMMED_FLAG)) {
4411 memset(se->discard_map, 0xff,
4412 SIT_VBLOCK_MAP_SIZE);
4414 memcpy(se->discard_map,
4416 SIT_VBLOCK_MAP_SIZE);
4417 sbi->discard_blks +=
4418 sbi->blocks_per_seg -
4422 if (__is_large_section(sbi))
4423 get_sec_entry(sbi, start)->valid_blocks +=
4426 start_blk += readed;
4427 } while (start_blk < sit_blk_cnt);
4429 down_read(&curseg->journal_rwsem);
4430 for (i = 0; i < sits_in_cursum(journal); i++) {
4431 unsigned int old_valid_blocks;
4433 start = le32_to_cpu(segno_in_journal(journal, i));
4434 if (start >= MAIN_SEGS(sbi)) {
4435 f2fs_err(sbi, "Wrong journal entry on segno %u",
4437 err = -EFSCORRUPTED;
4441 se = &sit_i->sentries[start];
4442 sit = sit_in_journal(journal, i);
4444 old_valid_blocks = se->valid_blocks;
4445 if (IS_NODESEG(se->type))
4446 total_node_blocks -= old_valid_blocks;
4448 err = check_block_count(sbi, start, &sit);
4451 seg_info_from_raw_sit(se, &sit);
4452 if (IS_NODESEG(se->type))
4453 total_node_blocks += se->valid_blocks;
4455 if (is_set_ckpt_flags(sbi, CP_TRIMMED_FLAG)) {
4456 memset(se->discard_map, 0xff, SIT_VBLOCK_MAP_SIZE);
4458 memcpy(se->discard_map, se->cur_valid_map,
4459 SIT_VBLOCK_MAP_SIZE);
4460 sbi->discard_blks += old_valid_blocks;
4461 sbi->discard_blks -= se->valid_blocks;
4464 if (__is_large_section(sbi)) {
4465 get_sec_entry(sbi, start)->valid_blocks +=
4467 get_sec_entry(sbi, start)->valid_blocks -=
4471 up_read(&curseg->journal_rwsem);
4473 if (!err && total_node_blocks != valid_node_count(sbi)) {
4474 f2fs_err(sbi, "SIT is corrupted node# %u vs %u",
4475 total_node_blocks, valid_node_count(sbi));
4476 err = -EFSCORRUPTED;
4482 static void init_free_segmap(struct f2fs_sb_info *sbi)
4486 struct seg_entry *sentry;
4488 for (start = 0; start < MAIN_SEGS(sbi); start++) {
4489 if (f2fs_usable_blks_in_seg(sbi, start) == 0)
4491 sentry = get_seg_entry(sbi, start);
4492 if (!sentry->valid_blocks)
4493 __set_free(sbi, start);
4495 SIT_I(sbi)->written_valid_blocks +=
4496 sentry->valid_blocks;
4499 /* set use the current segments */
4500 for (type = CURSEG_HOT_DATA; type <= CURSEG_COLD_NODE; type++) {
4501 struct curseg_info *curseg_t = CURSEG_I(sbi, type);
4502 __set_test_and_inuse(sbi, curseg_t->segno);
4506 static void init_dirty_segmap(struct f2fs_sb_info *sbi)
4508 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
4509 struct free_segmap_info *free_i = FREE_I(sbi);
4510 unsigned int segno = 0, offset = 0, secno;
4511 block_t valid_blocks, usable_blks_in_seg;
4512 block_t blks_per_sec = BLKS_PER_SEC(sbi);
4515 /* find dirty segment based on free segmap */
4516 segno = find_next_inuse(free_i, MAIN_SEGS(sbi), offset);
4517 if (segno >= MAIN_SEGS(sbi))
4520 valid_blocks = get_valid_blocks(sbi, segno, false);
4521 usable_blks_in_seg = f2fs_usable_blks_in_seg(sbi, segno);
4522 if (valid_blocks == usable_blks_in_seg || !valid_blocks)
4524 if (valid_blocks > usable_blks_in_seg) {
4525 f2fs_bug_on(sbi, 1);
4528 mutex_lock(&dirty_i->seglist_lock);
4529 __locate_dirty_segment(sbi, segno, DIRTY);
4530 mutex_unlock(&dirty_i->seglist_lock);
4533 if (!__is_large_section(sbi))
4536 mutex_lock(&dirty_i->seglist_lock);
4537 for (segno = 0; segno < MAIN_SEGS(sbi); segno += sbi->segs_per_sec) {
4538 valid_blocks = get_valid_blocks(sbi, segno, true);
4539 secno = GET_SEC_FROM_SEG(sbi, segno);
4541 if (!valid_blocks || valid_blocks == blks_per_sec)
4543 if (IS_CURSEC(sbi, secno))
4545 set_bit(secno, dirty_i->dirty_secmap);
4547 mutex_unlock(&dirty_i->seglist_lock);
4550 static int init_victim_secmap(struct f2fs_sb_info *sbi)
4552 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
4553 unsigned int bitmap_size = f2fs_bitmap_size(MAIN_SECS(sbi));
4555 dirty_i->victim_secmap = f2fs_kvzalloc(sbi, bitmap_size, GFP_KERNEL);
4556 if (!dirty_i->victim_secmap)
4561 static int build_dirty_segmap(struct f2fs_sb_info *sbi)
4563 struct dirty_seglist_info *dirty_i;
4564 unsigned int bitmap_size, i;
4566 /* allocate memory for dirty segments list information */
4567 dirty_i = f2fs_kzalloc(sbi, sizeof(struct dirty_seglist_info),
4572 SM_I(sbi)->dirty_info = dirty_i;
4573 mutex_init(&dirty_i->seglist_lock);
4575 bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi));
4577 for (i = 0; i < NR_DIRTY_TYPE; i++) {
4578 dirty_i->dirty_segmap[i] = f2fs_kvzalloc(sbi, bitmap_size,
4580 if (!dirty_i->dirty_segmap[i])
4584 if (__is_large_section(sbi)) {
4585 bitmap_size = f2fs_bitmap_size(MAIN_SECS(sbi));
4586 dirty_i->dirty_secmap = f2fs_kvzalloc(sbi,
4587 bitmap_size, GFP_KERNEL);
4588 if (!dirty_i->dirty_secmap)
4592 init_dirty_segmap(sbi);
4593 return init_victim_secmap(sbi);
4596 static int sanity_check_curseg(struct f2fs_sb_info *sbi)
4601 * In LFS/SSR curseg, .next_blkoff should point to an unused blkaddr;
4602 * In LFS curseg, all blkaddr after .next_blkoff should be unused.
4604 for (i = 0; i < NR_PERSISTENT_LOG; i++) {
4605 struct curseg_info *curseg = CURSEG_I(sbi, i);
4606 struct seg_entry *se = get_seg_entry(sbi, curseg->segno);
4607 unsigned int blkofs = curseg->next_blkoff;
4609 sanity_check_seg_type(sbi, curseg->seg_type);
4611 if (f2fs_test_bit(blkofs, se->cur_valid_map))
4614 if (curseg->alloc_type == SSR)
4617 for (blkofs += 1; blkofs < sbi->blocks_per_seg; blkofs++) {
4618 if (!f2fs_test_bit(blkofs, se->cur_valid_map))
4622 "Current segment's next free block offset is inconsistent with bitmap, logtype:%u, segno:%u, type:%u, next_blkoff:%u, blkofs:%u",
4623 i, curseg->segno, curseg->alloc_type,
4624 curseg->next_blkoff, blkofs);
4625 return -EFSCORRUPTED;
4631 #ifdef CONFIG_BLK_DEV_ZONED
4633 static int check_zone_write_pointer(struct f2fs_sb_info *sbi,
4634 struct f2fs_dev_info *fdev,
4635 struct blk_zone *zone)
4637 unsigned int wp_segno, wp_blkoff, zone_secno, zone_segno, segno;
4638 block_t zone_block, wp_block, last_valid_block;
4639 unsigned int log_sectors_per_block = sbi->log_blocksize - SECTOR_SHIFT;
4641 struct seg_entry *se;
4643 if (zone->type != BLK_ZONE_TYPE_SEQWRITE_REQ)
4646 wp_block = fdev->start_blk + (zone->wp >> log_sectors_per_block);
4647 wp_segno = GET_SEGNO(sbi, wp_block);
4648 wp_blkoff = wp_block - START_BLOCK(sbi, wp_segno);
4649 zone_block = fdev->start_blk + (zone->start >> log_sectors_per_block);
4650 zone_segno = GET_SEGNO(sbi, zone_block);
4651 zone_secno = GET_SEC_FROM_SEG(sbi, zone_segno);
4653 if (zone_segno >= MAIN_SEGS(sbi))
4657 * Skip check of zones cursegs point to, since
4658 * fix_curseg_write_pointer() checks them.
4660 for (i = 0; i < NO_CHECK_TYPE; i++)
4661 if (zone_secno == GET_SEC_FROM_SEG(sbi,
4662 CURSEG_I(sbi, i)->segno))
4666 * Get last valid block of the zone.
4668 last_valid_block = zone_block - 1;
4669 for (s = sbi->segs_per_sec - 1; s >= 0; s--) {
4670 segno = zone_segno + s;
4671 se = get_seg_entry(sbi, segno);
4672 for (b = sbi->blocks_per_seg - 1; b >= 0; b--)
4673 if (f2fs_test_bit(b, se->cur_valid_map)) {
4674 last_valid_block = START_BLOCK(sbi, segno) + b;
4677 if (last_valid_block >= zone_block)
4682 * If last valid block is beyond the write pointer, report the
4683 * inconsistency. This inconsistency does not cause write error
4684 * because the zone will not be selected for write operation until
4685 * it get discarded. Just report it.
4687 if (last_valid_block >= wp_block) {
4688 f2fs_notice(sbi, "Valid block beyond write pointer: "
4689 "valid block[0x%x,0x%x] wp[0x%x,0x%x]",
4690 GET_SEGNO(sbi, last_valid_block),
4691 GET_BLKOFF_FROM_SEG0(sbi, last_valid_block),
4692 wp_segno, wp_blkoff);
4697 * If there is no valid block in the zone and if write pointer is
4698 * not at zone start, reset the write pointer.
4700 if (last_valid_block + 1 == zone_block && zone->wp != zone->start) {
4702 "Zone without valid block has non-zero write "
4703 "pointer. Reset the write pointer: wp[0x%x,0x%x]",
4704 wp_segno, wp_blkoff);
4705 ret = __f2fs_issue_discard_zone(sbi, fdev->bdev, zone_block,
4706 zone->len >> log_sectors_per_block);
4708 f2fs_err(sbi, "Discard zone failed: %s (errno=%d)",
4717 static struct f2fs_dev_info *get_target_zoned_dev(struct f2fs_sb_info *sbi,
4718 block_t zone_blkaddr)
4722 for (i = 0; i < sbi->s_ndevs; i++) {
4723 if (!bdev_is_zoned(FDEV(i).bdev))
4725 if (sbi->s_ndevs == 1 || (FDEV(i).start_blk <= zone_blkaddr &&
4726 zone_blkaddr <= FDEV(i).end_blk))
4733 static int report_one_zone_cb(struct blk_zone *zone, unsigned int idx,
4735 memcpy(data, zone, sizeof(struct blk_zone));
4739 static int fix_curseg_write_pointer(struct f2fs_sb_info *sbi, int type)
4741 struct curseg_info *cs = CURSEG_I(sbi, type);
4742 struct f2fs_dev_info *zbd;
4743 struct blk_zone zone;
4744 unsigned int cs_section, wp_segno, wp_blkoff, wp_sector_off;
4745 block_t cs_zone_block, wp_block;
4746 unsigned int log_sectors_per_block = sbi->log_blocksize - SECTOR_SHIFT;
4747 sector_t zone_sector;
4750 cs_section = GET_SEC_FROM_SEG(sbi, cs->segno);
4751 cs_zone_block = START_BLOCK(sbi, GET_SEG_FROM_SEC(sbi, cs_section));
4753 zbd = get_target_zoned_dev(sbi, cs_zone_block);
4757 /* report zone for the sector the curseg points to */
4758 zone_sector = (sector_t)(cs_zone_block - zbd->start_blk)
4759 << log_sectors_per_block;
4760 err = blkdev_report_zones(zbd->bdev, zone_sector, 1,
4761 report_one_zone_cb, &zone);
4763 f2fs_err(sbi, "Report zone failed: %s errno=(%d)",
4768 if (zone.type != BLK_ZONE_TYPE_SEQWRITE_REQ)
4771 wp_block = zbd->start_blk + (zone.wp >> log_sectors_per_block);
4772 wp_segno = GET_SEGNO(sbi, wp_block);
4773 wp_blkoff = wp_block - START_BLOCK(sbi, wp_segno);
4774 wp_sector_off = zone.wp & GENMASK(log_sectors_per_block - 1, 0);
4776 if (cs->segno == wp_segno && cs->next_blkoff == wp_blkoff &&
4780 f2fs_notice(sbi, "Unaligned curseg[%d] with write pointer: "
4781 "curseg[0x%x,0x%x] wp[0x%x,0x%x]",
4782 type, cs->segno, cs->next_blkoff, wp_segno, wp_blkoff);
4784 f2fs_notice(sbi, "Assign new section to curseg[%d]: "
4785 "curseg[0x%x,0x%x]", type, cs->segno, cs->next_blkoff);
4786 allocate_segment_by_default(sbi, type, true);
4788 /* check consistency of the zone curseg pointed to */
4789 if (check_zone_write_pointer(sbi, zbd, &zone))
4792 /* check newly assigned zone */
4793 cs_section = GET_SEC_FROM_SEG(sbi, cs->segno);
4794 cs_zone_block = START_BLOCK(sbi, GET_SEG_FROM_SEC(sbi, cs_section));
4796 zbd = get_target_zoned_dev(sbi, cs_zone_block);
4800 zone_sector = (sector_t)(cs_zone_block - zbd->start_blk)
4801 << log_sectors_per_block;
4802 err = blkdev_report_zones(zbd->bdev, zone_sector, 1,
4803 report_one_zone_cb, &zone);
4805 f2fs_err(sbi, "Report zone failed: %s errno=(%d)",
4810 if (zone.type != BLK_ZONE_TYPE_SEQWRITE_REQ)
4813 if (zone.wp != zone.start) {
4815 "New zone for curseg[%d] is not yet discarded. "
4816 "Reset the zone: curseg[0x%x,0x%x]",
4817 type, cs->segno, cs->next_blkoff);
4818 err = __f2fs_issue_discard_zone(sbi, zbd->bdev,
4819 zone_sector >> log_sectors_per_block,
4820 zone.len >> log_sectors_per_block);
4822 f2fs_err(sbi, "Discard zone failed: %s (errno=%d)",
4831 int f2fs_fix_curseg_write_pointer(struct f2fs_sb_info *sbi)
4835 for (i = 0; i < NR_PERSISTENT_LOG; i++) {
4836 ret = fix_curseg_write_pointer(sbi, i);
4844 struct check_zone_write_pointer_args {
4845 struct f2fs_sb_info *sbi;
4846 struct f2fs_dev_info *fdev;
4849 static int check_zone_write_pointer_cb(struct blk_zone *zone, unsigned int idx,
4851 struct check_zone_write_pointer_args *args;
4852 args = (struct check_zone_write_pointer_args *)data;
4854 return check_zone_write_pointer(args->sbi, args->fdev, zone);
4857 int f2fs_check_write_pointer(struct f2fs_sb_info *sbi)
4860 struct check_zone_write_pointer_args args;
4862 for (i = 0; i < sbi->s_ndevs; i++) {
4863 if (!bdev_is_zoned(FDEV(i).bdev))
4867 args.fdev = &FDEV(i);
4868 ret = blkdev_report_zones(FDEV(i).bdev, 0, BLK_ALL_ZONES,
4869 check_zone_write_pointer_cb, &args);
4877 static bool is_conv_zone(struct f2fs_sb_info *sbi, unsigned int zone_idx,
4878 unsigned int dev_idx)
4880 if (!bdev_is_zoned(FDEV(dev_idx).bdev))
4882 return !test_bit(zone_idx, FDEV(dev_idx).blkz_seq);
4885 /* Return the zone index in the given device */
4886 static unsigned int get_zone_idx(struct f2fs_sb_info *sbi, unsigned int secno,
4889 block_t sec_start_blkaddr = START_BLOCK(sbi, GET_SEG_FROM_SEC(sbi, secno));
4891 return (sec_start_blkaddr - FDEV(dev_idx).start_blk) >>
4892 sbi->log_blocks_per_blkz;
4896 * Return the usable segments in a section based on the zone's
4897 * corresponding zone capacity. Zone is equal to a section.
4899 static inline unsigned int f2fs_usable_zone_segs_in_sec(
4900 struct f2fs_sb_info *sbi, unsigned int segno)
4902 unsigned int dev_idx, zone_idx, unusable_segs_in_sec;
4904 dev_idx = f2fs_target_device_index(sbi, START_BLOCK(sbi, segno));
4905 zone_idx = get_zone_idx(sbi, GET_SEC_FROM_SEG(sbi, segno), dev_idx);
4907 /* Conventional zone's capacity is always equal to zone size */
4908 if (is_conv_zone(sbi, zone_idx, dev_idx))
4909 return sbi->segs_per_sec;
4912 * If the zone_capacity_blocks array is NULL, then zone capacity
4913 * is equal to the zone size for all zones
4915 if (!FDEV(dev_idx).zone_capacity_blocks)
4916 return sbi->segs_per_sec;
4918 /* Get the segment count beyond zone capacity block */
4919 unusable_segs_in_sec = (sbi->blocks_per_blkz -
4920 FDEV(dev_idx).zone_capacity_blocks[zone_idx]) >>
4921 sbi->log_blocks_per_seg;
4922 return sbi->segs_per_sec - unusable_segs_in_sec;
4926 * Return the number of usable blocks in a segment. The number of blocks
4927 * returned is always equal to the number of blocks in a segment for
4928 * segments fully contained within a sequential zone capacity or a
4929 * conventional zone. For segments partially contained in a sequential
4930 * zone capacity, the number of usable blocks up to the zone capacity
4931 * is returned. 0 is returned in all other cases.
4933 static inline unsigned int f2fs_usable_zone_blks_in_seg(
4934 struct f2fs_sb_info *sbi, unsigned int segno)
4936 block_t seg_start, sec_start_blkaddr, sec_cap_blkaddr;
4937 unsigned int zone_idx, dev_idx, secno;
4939 secno = GET_SEC_FROM_SEG(sbi, segno);
4940 seg_start = START_BLOCK(sbi, segno);
4941 dev_idx = f2fs_target_device_index(sbi, seg_start);
4942 zone_idx = get_zone_idx(sbi, secno, dev_idx);
4945 * Conventional zone's capacity is always equal to zone size,
4946 * so, blocks per segment is unchanged.
4948 if (is_conv_zone(sbi, zone_idx, dev_idx))
4949 return sbi->blocks_per_seg;
4951 if (!FDEV(dev_idx).zone_capacity_blocks)
4952 return sbi->blocks_per_seg;
4954 sec_start_blkaddr = START_BLOCK(sbi, GET_SEG_FROM_SEC(sbi, secno));
4955 sec_cap_blkaddr = sec_start_blkaddr +
4956 FDEV(dev_idx).zone_capacity_blocks[zone_idx];
4959 * If segment starts before zone capacity and spans beyond
4960 * zone capacity, then usable blocks are from seg start to
4961 * zone capacity. If the segment starts after the zone capacity,
4962 * then there are no usable blocks.
4964 if (seg_start >= sec_cap_blkaddr)
4966 if (seg_start + sbi->blocks_per_seg > sec_cap_blkaddr)
4967 return sec_cap_blkaddr - seg_start;
4969 return sbi->blocks_per_seg;
4972 int f2fs_fix_curseg_write_pointer(struct f2fs_sb_info *sbi)
4977 int f2fs_check_write_pointer(struct f2fs_sb_info *sbi)
4982 static inline unsigned int f2fs_usable_zone_blks_in_seg(struct f2fs_sb_info *sbi,
4988 static inline unsigned int f2fs_usable_zone_segs_in_sec(struct f2fs_sb_info *sbi,
4994 unsigned int f2fs_usable_blks_in_seg(struct f2fs_sb_info *sbi,
4997 if (f2fs_sb_has_blkzoned(sbi))
4998 return f2fs_usable_zone_blks_in_seg(sbi, segno);
5000 return sbi->blocks_per_seg;
5003 unsigned int f2fs_usable_segs_in_sec(struct f2fs_sb_info *sbi,
5006 if (f2fs_sb_has_blkzoned(sbi))
5007 return f2fs_usable_zone_segs_in_sec(sbi, segno);
5009 return sbi->segs_per_sec;
5013 * Update min, max modified time for cost-benefit GC algorithm
5015 static void init_min_max_mtime(struct f2fs_sb_info *sbi)
5017 struct sit_info *sit_i = SIT_I(sbi);
5020 down_write(&sit_i->sentry_lock);
5022 sit_i->min_mtime = ULLONG_MAX;
5024 for (segno = 0; segno < MAIN_SEGS(sbi); segno += sbi->segs_per_sec) {
5026 unsigned long long mtime = 0;
5028 for (i = 0; i < sbi->segs_per_sec; i++)
5029 mtime += get_seg_entry(sbi, segno + i)->mtime;
5031 mtime = div_u64(mtime, sbi->segs_per_sec);
5033 if (sit_i->min_mtime > mtime)
5034 sit_i->min_mtime = mtime;
5036 sit_i->max_mtime = get_mtime(sbi, false);
5037 sit_i->dirty_max_mtime = 0;
5038 up_write(&sit_i->sentry_lock);
5041 int f2fs_build_segment_manager(struct f2fs_sb_info *sbi)
5043 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
5044 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
5045 struct f2fs_sm_info *sm_info;
5048 sm_info = f2fs_kzalloc(sbi, sizeof(struct f2fs_sm_info), GFP_KERNEL);
5053 sbi->sm_info = sm_info;
5054 sm_info->seg0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr);
5055 sm_info->main_blkaddr = le32_to_cpu(raw_super->main_blkaddr);
5056 sm_info->segment_count = le32_to_cpu(raw_super->segment_count);
5057 sm_info->reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count);
5058 sm_info->ovp_segments = le32_to_cpu(ckpt->overprov_segment_count);
5059 sm_info->main_segments = le32_to_cpu(raw_super->segment_count_main);
5060 sm_info->ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr);
5061 sm_info->rec_prefree_segments = sm_info->main_segments *
5062 DEF_RECLAIM_PREFREE_SEGMENTS / 100;
5063 if (sm_info->rec_prefree_segments > DEF_MAX_RECLAIM_PREFREE_SEGMENTS)
5064 sm_info->rec_prefree_segments = DEF_MAX_RECLAIM_PREFREE_SEGMENTS;
5066 if (!f2fs_lfs_mode(sbi))
5067 sm_info->ipu_policy = 1 << F2FS_IPU_FSYNC;
5068 sm_info->min_ipu_util = DEF_MIN_IPU_UTIL;
5069 sm_info->min_fsync_blocks = DEF_MIN_FSYNC_BLOCKS;
5070 sm_info->min_seq_blocks = sbi->blocks_per_seg * sbi->segs_per_sec;
5071 sm_info->min_hot_blocks = DEF_MIN_HOT_BLOCKS;
5072 sm_info->min_ssr_sections = reserved_sections(sbi);
5074 INIT_LIST_HEAD(&sm_info->sit_entry_set);
5076 init_rwsem(&sm_info->curseg_lock);
5078 if (!f2fs_readonly(sbi->sb)) {
5079 err = f2fs_create_flush_cmd_control(sbi);
5084 err = create_discard_cmd_control(sbi);
5088 err = build_sit_info(sbi);
5091 err = build_free_segmap(sbi);
5094 err = build_curseg(sbi);
5098 /* reinit free segmap based on SIT */
5099 err = build_sit_entries(sbi);
5103 init_free_segmap(sbi);
5104 err = build_dirty_segmap(sbi);
5108 err = sanity_check_curseg(sbi);
5112 init_min_max_mtime(sbi);
5116 static void discard_dirty_segmap(struct f2fs_sb_info *sbi,
5117 enum dirty_type dirty_type)
5119 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
5121 mutex_lock(&dirty_i->seglist_lock);
5122 kvfree(dirty_i->dirty_segmap[dirty_type]);
5123 dirty_i->nr_dirty[dirty_type] = 0;
5124 mutex_unlock(&dirty_i->seglist_lock);
5127 static void destroy_victim_secmap(struct f2fs_sb_info *sbi)
5129 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
5130 kvfree(dirty_i->victim_secmap);
5133 static void destroy_dirty_segmap(struct f2fs_sb_info *sbi)
5135 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
5141 /* discard pre-free/dirty segments list */
5142 for (i = 0; i < NR_DIRTY_TYPE; i++)
5143 discard_dirty_segmap(sbi, i);
5145 if (__is_large_section(sbi)) {
5146 mutex_lock(&dirty_i->seglist_lock);
5147 kvfree(dirty_i->dirty_secmap);
5148 mutex_unlock(&dirty_i->seglist_lock);
5151 destroy_victim_secmap(sbi);
5152 SM_I(sbi)->dirty_info = NULL;
5156 static void destroy_curseg(struct f2fs_sb_info *sbi)
5158 struct curseg_info *array = SM_I(sbi)->curseg_array;
5163 SM_I(sbi)->curseg_array = NULL;
5164 for (i = 0; i < NR_CURSEG_TYPE; i++) {
5165 kfree(array[i].sum_blk);
5166 kfree(array[i].journal);
5171 static void destroy_free_segmap(struct f2fs_sb_info *sbi)
5173 struct free_segmap_info *free_i = SM_I(sbi)->free_info;
5176 SM_I(sbi)->free_info = NULL;
5177 kvfree(free_i->free_segmap);
5178 kvfree(free_i->free_secmap);
5182 static void destroy_sit_info(struct f2fs_sb_info *sbi)
5184 struct sit_info *sit_i = SIT_I(sbi);
5189 if (sit_i->sentries)
5190 kvfree(sit_i->bitmap);
5191 kfree(sit_i->tmp_map);
5193 kvfree(sit_i->sentries);
5194 kvfree(sit_i->sec_entries);
5195 kvfree(sit_i->dirty_sentries_bitmap);
5197 SM_I(sbi)->sit_info = NULL;
5198 kvfree(sit_i->sit_bitmap);
5199 #ifdef CONFIG_F2FS_CHECK_FS
5200 kvfree(sit_i->sit_bitmap_mir);
5201 kvfree(sit_i->invalid_segmap);
5206 void f2fs_destroy_segment_manager(struct f2fs_sb_info *sbi)
5208 struct f2fs_sm_info *sm_info = SM_I(sbi);
5212 f2fs_destroy_flush_cmd_control(sbi, true);
5213 destroy_discard_cmd_control(sbi);
5214 destroy_dirty_segmap(sbi);
5215 destroy_curseg(sbi);
5216 destroy_free_segmap(sbi);
5217 destroy_sit_info(sbi);
5218 sbi->sm_info = NULL;
5222 int __init f2fs_create_segment_manager_caches(void)
5224 discard_entry_slab = f2fs_kmem_cache_create("f2fs_discard_entry",
5225 sizeof(struct discard_entry));
5226 if (!discard_entry_slab)
5229 discard_cmd_slab = f2fs_kmem_cache_create("f2fs_discard_cmd",
5230 sizeof(struct discard_cmd));
5231 if (!discard_cmd_slab)
5232 goto destroy_discard_entry;
5234 sit_entry_set_slab = f2fs_kmem_cache_create("f2fs_sit_entry_set",
5235 sizeof(struct sit_entry_set));
5236 if (!sit_entry_set_slab)
5237 goto destroy_discard_cmd;
5239 inmem_entry_slab = f2fs_kmem_cache_create("f2fs_inmem_page_entry",
5240 sizeof(struct inmem_pages));
5241 if (!inmem_entry_slab)
5242 goto destroy_sit_entry_set;
5245 destroy_sit_entry_set:
5246 kmem_cache_destroy(sit_entry_set_slab);
5247 destroy_discard_cmd:
5248 kmem_cache_destroy(discard_cmd_slab);
5249 destroy_discard_entry:
5250 kmem_cache_destroy(discard_entry_slab);
5255 void f2fs_destroy_segment_manager_caches(void)
5257 kmem_cache_destroy(sit_entry_set_slab);
5258 kmem_cache_destroy(discard_cmd_slab);
5259 kmem_cache_destroy(discard_entry_slab);
5260 kmem_cache_destroy(inmem_entry_slab);