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 if (PagePrivate(page))
190 set_page_private(page, (unsigned long)ATOMIC_WRITTEN_PAGE);
192 f2fs_set_page_private(page, ATOMIC_WRITTEN_PAGE);
194 new = f2fs_kmem_cache_alloc(inmem_entry_slab, GFP_NOFS);
196 /* add atomic page indices to the list */
198 INIT_LIST_HEAD(&new->list);
200 /* increase reference count with clean state */
202 mutex_lock(&F2FS_I(inode)->inmem_lock);
203 list_add_tail(&new->list, &F2FS_I(inode)->inmem_pages);
204 inc_page_count(F2FS_I_SB(inode), F2FS_INMEM_PAGES);
205 mutex_unlock(&F2FS_I(inode)->inmem_lock);
207 trace_f2fs_register_inmem_page(page, INMEM);
210 static int __revoke_inmem_pages(struct inode *inode,
211 struct list_head *head, bool drop, bool recover,
214 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
215 struct inmem_pages *cur, *tmp;
218 list_for_each_entry_safe(cur, tmp, head, list) {
219 struct page *page = cur->page;
222 trace_f2fs_commit_inmem_page(page, INMEM_DROP);
226 * to avoid deadlock in between page lock and
229 if (!trylock_page(page))
235 f2fs_wait_on_page_writeback(page, DATA, true, true);
238 struct dnode_of_data dn;
241 trace_f2fs_commit_inmem_page(page, INMEM_REVOKE);
243 set_new_dnode(&dn, inode, NULL, NULL, 0);
244 err = f2fs_get_dnode_of_data(&dn, page->index,
247 if (err == -ENOMEM) {
248 congestion_wait(BLK_RW_ASYNC,
257 err = f2fs_get_node_info(sbi, dn.nid, &ni);
263 if (cur->old_addr == NEW_ADDR) {
264 f2fs_invalidate_blocks(sbi, dn.data_blkaddr);
265 f2fs_update_data_blkaddr(&dn, NEW_ADDR);
267 f2fs_replace_block(sbi, &dn, dn.data_blkaddr,
268 cur->old_addr, ni.version, true, true);
272 /* we don't need to invalidate this in the sccessful status */
273 if (drop || recover) {
274 ClearPageUptodate(page);
275 clear_cold_data(page);
277 f2fs_clear_page_private(page);
278 f2fs_put_page(page, 1);
280 list_del(&cur->list);
281 kmem_cache_free(inmem_entry_slab, cur);
282 dec_page_count(F2FS_I_SB(inode), F2FS_INMEM_PAGES);
287 void f2fs_drop_inmem_pages_all(struct f2fs_sb_info *sbi, bool gc_failure)
289 struct list_head *head = &sbi->inode_list[ATOMIC_FILE];
291 struct f2fs_inode_info *fi;
292 unsigned int count = sbi->atomic_files;
293 unsigned int looped = 0;
295 spin_lock(&sbi->inode_lock[ATOMIC_FILE]);
296 if (list_empty(head)) {
297 spin_unlock(&sbi->inode_lock[ATOMIC_FILE]);
300 fi = list_first_entry(head, struct f2fs_inode_info, inmem_ilist);
301 inode = igrab(&fi->vfs_inode);
303 list_move_tail(&fi->inmem_ilist, head);
304 spin_unlock(&sbi->inode_lock[ATOMIC_FILE]);
308 if (!fi->i_gc_failures[GC_FAILURE_ATOMIC])
311 set_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST);
312 f2fs_drop_inmem_pages(inode);
316 congestion_wait(BLK_RW_ASYNC, DEFAULT_IO_TIMEOUT);
319 if (++looped >= count)
325 void f2fs_drop_inmem_pages(struct inode *inode)
327 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
328 struct f2fs_inode_info *fi = F2FS_I(inode);
331 mutex_lock(&fi->inmem_lock);
332 if (list_empty(&fi->inmem_pages)) {
333 fi->i_gc_failures[GC_FAILURE_ATOMIC] = 0;
335 spin_lock(&sbi->inode_lock[ATOMIC_FILE]);
336 if (!list_empty(&fi->inmem_ilist))
337 list_del_init(&fi->inmem_ilist);
338 if (f2fs_is_atomic_file(inode)) {
339 clear_inode_flag(inode, FI_ATOMIC_FILE);
342 spin_unlock(&sbi->inode_lock[ATOMIC_FILE]);
344 mutex_unlock(&fi->inmem_lock);
347 __revoke_inmem_pages(inode, &fi->inmem_pages,
349 mutex_unlock(&fi->inmem_lock);
353 void f2fs_drop_inmem_page(struct inode *inode, struct page *page)
355 struct f2fs_inode_info *fi = F2FS_I(inode);
356 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
357 struct list_head *head = &fi->inmem_pages;
358 struct inmem_pages *cur = NULL;
360 f2fs_bug_on(sbi, !IS_ATOMIC_WRITTEN_PAGE(page));
362 mutex_lock(&fi->inmem_lock);
363 list_for_each_entry(cur, head, list) {
364 if (cur->page == page)
368 f2fs_bug_on(sbi, list_empty(head) || cur->page != page);
369 list_del(&cur->list);
370 mutex_unlock(&fi->inmem_lock);
372 dec_page_count(sbi, F2FS_INMEM_PAGES);
373 kmem_cache_free(inmem_entry_slab, cur);
375 ClearPageUptodate(page);
376 f2fs_clear_page_private(page);
377 f2fs_put_page(page, 0);
379 trace_f2fs_commit_inmem_page(page, INMEM_INVALIDATE);
382 static int __f2fs_commit_inmem_pages(struct inode *inode)
384 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
385 struct f2fs_inode_info *fi = F2FS_I(inode);
386 struct inmem_pages *cur, *tmp;
387 struct f2fs_io_info fio = {
392 .op_flags = REQ_SYNC | REQ_PRIO,
393 .io_type = FS_DATA_IO,
395 struct list_head revoke_list;
396 bool submit_bio = false;
399 INIT_LIST_HEAD(&revoke_list);
401 list_for_each_entry_safe(cur, tmp, &fi->inmem_pages, list) {
402 struct page *page = cur->page;
405 if (page->mapping == inode->i_mapping) {
406 trace_f2fs_commit_inmem_page(page, INMEM);
408 f2fs_wait_on_page_writeback(page, DATA, true, true);
410 set_page_dirty(page);
411 if (clear_page_dirty_for_io(page)) {
412 inode_dec_dirty_pages(inode);
413 f2fs_remove_dirty_inode(inode);
417 fio.old_blkaddr = NULL_ADDR;
418 fio.encrypted_page = NULL;
419 fio.need_lock = LOCK_DONE;
420 err = f2fs_do_write_data_page(&fio);
422 if (err == -ENOMEM) {
423 congestion_wait(BLK_RW_ASYNC,
431 /* record old blkaddr for revoking */
432 cur->old_addr = fio.old_blkaddr;
436 list_move_tail(&cur->list, &revoke_list);
440 f2fs_submit_merged_write_cond(sbi, inode, NULL, 0, DATA);
444 * try to revoke all committed pages, but still we could fail
445 * due to no memory or other reason, if that happened, EAGAIN
446 * will be returned, which means in such case, transaction is
447 * already not integrity, caller should use journal to do the
448 * recovery or rewrite & commit last transaction. For other
449 * error number, revoking was done by filesystem itself.
451 err = __revoke_inmem_pages(inode, &revoke_list,
454 /* drop all uncommitted pages */
455 __revoke_inmem_pages(inode, &fi->inmem_pages,
458 __revoke_inmem_pages(inode, &revoke_list,
459 false, false, false);
465 int f2fs_commit_inmem_pages(struct inode *inode)
467 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
468 struct f2fs_inode_info *fi = F2FS_I(inode);
471 f2fs_balance_fs(sbi, true);
473 down_write(&fi->i_gc_rwsem[WRITE]);
476 set_inode_flag(inode, FI_ATOMIC_COMMIT);
478 mutex_lock(&fi->inmem_lock);
479 err = __f2fs_commit_inmem_pages(inode);
480 mutex_unlock(&fi->inmem_lock);
482 clear_inode_flag(inode, FI_ATOMIC_COMMIT);
485 up_write(&fi->i_gc_rwsem[WRITE]);
491 * This function balances dirty node and dentry pages.
492 * In addition, it controls garbage collection.
494 void f2fs_balance_fs(struct f2fs_sb_info *sbi, bool need)
496 if (time_to_inject(sbi, FAULT_CHECKPOINT)) {
497 f2fs_show_injection_info(sbi, FAULT_CHECKPOINT);
498 f2fs_stop_checkpoint(sbi, false);
501 /* balance_fs_bg is able to be pending */
502 if (need && excess_cached_nats(sbi))
503 f2fs_balance_fs_bg(sbi, false);
505 if (!f2fs_is_checkpoint_ready(sbi))
509 * We should do GC or end up with checkpoint, if there are so many dirty
510 * dir/node pages without enough free segments.
512 if (has_not_enough_free_secs(sbi, 0, 0)) {
513 if (test_opt(sbi, GC_MERGE) && sbi->gc_thread &&
514 sbi->gc_thread->f2fs_gc_task) {
517 prepare_to_wait(&sbi->gc_thread->fggc_wq, &wait,
518 TASK_UNINTERRUPTIBLE);
519 wake_up(&sbi->gc_thread->gc_wait_queue_head);
521 finish_wait(&sbi->gc_thread->fggc_wq, &wait);
523 down_write(&sbi->gc_lock);
524 f2fs_gc(sbi, false, false, false, NULL_SEGNO);
529 void f2fs_balance_fs_bg(struct f2fs_sb_info *sbi, bool from_bg)
531 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
534 /* try to shrink extent cache when there is no enough memory */
535 if (!f2fs_available_free_memory(sbi, EXTENT_CACHE))
536 f2fs_shrink_extent_tree(sbi, EXTENT_CACHE_SHRINK_NUMBER);
538 /* check the # of cached NAT entries */
539 if (!f2fs_available_free_memory(sbi, NAT_ENTRIES))
540 f2fs_try_to_free_nats(sbi, NAT_ENTRY_PER_BLOCK);
542 if (!f2fs_available_free_memory(sbi, FREE_NIDS))
543 f2fs_try_to_free_nids(sbi, MAX_FREE_NIDS);
545 f2fs_build_free_nids(sbi, false, false);
547 if (excess_dirty_nats(sbi) || excess_dirty_nodes(sbi) ||
548 excess_prefree_segs(sbi))
551 /* there is background inflight IO or foreground operation recently */
552 if (is_inflight_io(sbi, REQ_TIME) ||
553 (!f2fs_time_over(sbi, REQ_TIME) && rwsem_is_locked(&sbi->cp_rwsem)))
556 /* exceed periodical checkpoint timeout threshold */
557 if (f2fs_time_over(sbi, CP_TIME))
560 /* checkpoint is the only way to shrink partial cached entries */
561 if (f2fs_available_free_memory(sbi, NAT_ENTRIES) ||
562 f2fs_available_free_memory(sbi, INO_ENTRIES))
566 if (test_opt(sbi, DATA_FLUSH) && from_bg) {
567 struct blk_plug plug;
569 mutex_lock(&sbi->flush_lock);
571 blk_start_plug(&plug);
572 f2fs_sync_dirty_inodes(sbi, FILE_INODE);
573 blk_finish_plug(&plug);
575 mutex_unlock(&sbi->flush_lock);
577 f2fs_sync_fs(sbi->sb, true);
578 stat_inc_bg_cp_count(sbi->stat_info);
581 static int __submit_flush_wait(struct f2fs_sb_info *sbi,
582 struct block_device *bdev)
584 int ret = blkdev_issue_flush(bdev);
586 trace_f2fs_issue_flush(bdev, test_opt(sbi, NOBARRIER),
587 test_opt(sbi, FLUSH_MERGE), ret);
591 static int submit_flush_wait(struct f2fs_sb_info *sbi, nid_t ino)
596 if (!f2fs_is_multi_device(sbi))
597 return __submit_flush_wait(sbi, sbi->sb->s_bdev);
599 for (i = 0; i < sbi->s_ndevs; i++) {
600 if (!f2fs_is_dirty_device(sbi, ino, i, FLUSH_INO))
602 ret = __submit_flush_wait(sbi, FDEV(i).bdev);
609 static int issue_flush_thread(void *data)
611 struct f2fs_sb_info *sbi = data;
612 struct flush_cmd_control *fcc = SM_I(sbi)->fcc_info;
613 wait_queue_head_t *q = &fcc->flush_wait_queue;
615 if (kthread_should_stop())
618 if (!llist_empty(&fcc->issue_list)) {
619 struct flush_cmd *cmd, *next;
622 fcc->dispatch_list = llist_del_all(&fcc->issue_list);
623 fcc->dispatch_list = llist_reverse_order(fcc->dispatch_list);
625 cmd = llist_entry(fcc->dispatch_list, struct flush_cmd, llnode);
627 ret = submit_flush_wait(sbi, cmd->ino);
628 atomic_inc(&fcc->issued_flush);
630 llist_for_each_entry_safe(cmd, next,
631 fcc->dispatch_list, llnode) {
633 complete(&cmd->wait);
635 fcc->dispatch_list = NULL;
638 wait_event_interruptible(*q,
639 kthread_should_stop() || !llist_empty(&fcc->issue_list));
643 int f2fs_issue_flush(struct f2fs_sb_info *sbi, nid_t ino)
645 struct flush_cmd_control *fcc = SM_I(sbi)->fcc_info;
646 struct flush_cmd cmd;
649 if (test_opt(sbi, NOBARRIER))
652 if (!test_opt(sbi, FLUSH_MERGE)) {
653 atomic_inc(&fcc->queued_flush);
654 ret = submit_flush_wait(sbi, ino);
655 atomic_dec(&fcc->queued_flush);
656 atomic_inc(&fcc->issued_flush);
660 if (atomic_inc_return(&fcc->queued_flush) == 1 ||
661 f2fs_is_multi_device(sbi)) {
662 ret = submit_flush_wait(sbi, ino);
663 atomic_dec(&fcc->queued_flush);
665 atomic_inc(&fcc->issued_flush);
670 init_completion(&cmd.wait);
672 llist_add(&cmd.llnode, &fcc->issue_list);
675 * update issue_list before we wake up issue_flush thread, this
676 * smp_mb() pairs with another barrier in ___wait_event(), see
677 * more details in comments of waitqueue_active().
681 if (waitqueue_active(&fcc->flush_wait_queue))
682 wake_up(&fcc->flush_wait_queue);
684 if (fcc->f2fs_issue_flush) {
685 wait_for_completion(&cmd.wait);
686 atomic_dec(&fcc->queued_flush);
688 struct llist_node *list;
690 list = llist_del_all(&fcc->issue_list);
692 wait_for_completion(&cmd.wait);
693 atomic_dec(&fcc->queued_flush);
695 struct flush_cmd *tmp, *next;
697 ret = submit_flush_wait(sbi, ino);
699 llist_for_each_entry_safe(tmp, next, list, llnode) {
702 atomic_dec(&fcc->queued_flush);
706 complete(&tmp->wait);
714 int f2fs_create_flush_cmd_control(struct f2fs_sb_info *sbi)
716 dev_t dev = sbi->sb->s_bdev->bd_dev;
717 struct flush_cmd_control *fcc;
720 if (SM_I(sbi)->fcc_info) {
721 fcc = SM_I(sbi)->fcc_info;
722 if (fcc->f2fs_issue_flush)
727 fcc = f2fs_kzalloc(sbi, sizeof(struct flush_cmd_control), GFP_KERNEL);
730 atomic_set(&fcc->issued_flush, 0);
731 atomic_set(&fcc->queued_flush, 0);
732 init_waitqueue_head(&fcc->flush_wait_queue);
733 init_llist_head(&fcc->issue_list);
734 SM_I(sbi)->fcc_info = fcc;
735 if (!test_opt(sbi, FLUSH_MERGE))
739 fcc->f2fs_issue_flush = kthread_run(issue_flush_thread, sbi,
740 "f2fs_flush-%u:%u", MAJOR(dev), MINOR(dev));
741 if (IS_ERR(fcc->f2fs_issue_flush)) {
742 err = PTR_ERR(fcc->f2fs_issue_flush);
744 SM_I(sbi)->fcc_info = NULL;
751 void f2fs_destroy_flush_cmd_control(struct f2fs_sb_info *sbi, bool free)
753 struct flush_cmd_control *fcc = SM_I(sbi)->fcc_info;
755 if (fcc && fcc->f2fs_issue_flush) {
756 struct task_struct *flush_thread = fcc->f2fs_issue_flush;
758 fcc->f2fs_issue_flush = NULL;
759 kthread_stop(flush_thread);
763 SM_I(sbi)->fcc_info = NULL;
767 int f2fs_flush_device_cache(struct f2fs_sb_info *sbi)
771 if (!f2fs_is_multi_device(sbi))
774 if (test_opt(sbi, NOBARRIER))
777 for (i = 1; i < sbi->s_ndevs; i++) {
778 if (!f2fs_test_bit(i, (char *)&sbi->dirty_device))
780 ret = __submit_flush_wait(sbi, FDEV(i).bdev);
784 spin_lock(&sbi->dev_lock);
785 f2fs_clear_bit(i, (char *)&sbi->dirty_device);
786 spin_unlock(&sbi->dev_lock);
792 static void __locate_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno,
793 enum dirty_type dirty_type)
795 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
797 /* need not be added */
798 if (IS_CURSEG(sbi, segno))
801 if (!test_and_set_bit(segno, dirty_i->dirty_segmap[dirty_type]))
802 dirty_i->nr_dirty[dirty_type]++;
804 if (dirty_type == DIRTY) {
805 struct seg_entry *sentry = get_seg_entry(sbi, segno);
806 enum dirty_type t = sentry->type;
808 if (unlikely(t >= DIRTY)) {
812 if (!test_and_set_bit(segno, dirty_i->dirty_segmap[t]))
813 dirty_i->nr_dirty[t]++;
815 if (__is_large_section(sbi)) {
816 unsigned int secno = GET_SEC_FROM_SEG(sbi, segno);
817 block_t valid_blocks =
818 get_valid_blocks(sbi, segno, true);
820 f2fs_bug_on(sbi, unlikely(!valid_blocks ||
821 valid_blocks == BLKS_PER_SEC(sbi)));
823 if (!IS_CURSEC(sbi, secno))
824 set_bit(secno, dirty_i->dirty_secmap);
829 static void __remove_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno,
830 enum dirty_type dirty_type)
832 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
833 block_t valid_blocks;
835 if (test_and_clear_bit(segno, dirty_i->dirty_segmap[dirty_type]))
836 dirty_i->nr_dirty[dirty_type]--;
838 if (dirty_type == DIRTY) {
839 struct seg_entry *sentry = get_seg_entry(sbi, segno);
840 enum dirty_type t = sentry->type;
842 if (test_and_clear_bit(segno, dirty_i->dirty_segmap[t]))
843 dirty_i->nr_dirty[t]--;
845 valid_blocks = get_valid_blocks(sbi, segno, true);
846 if (valid_blocks == 0) {
847 clear_bit(GET_SEC_FROM_SEG(sbi, segno),
848 dirty_i->victim_secmap);
849 #ifdef CONFIG_F2FS_CHECK_FS
850 clear_bit(segno, SIT_I(sbi)->invalid_segmap);
853 if (__is_large_section(sbi)) {
854 unsigned int secno = GET_SEC_FROM_SEG(sbi, segno);
857 valid_blocks == BLKS_PER_SEC(sbi)) {
858 clear_bit(secno, dirty_i->dirty_secmap);
862 if (!IS_CURSEC(sbi, secno))
863 set_bit(secno, dirty_i->dirty_secmap);
869 * Should not occur error such as -ENOMEM.
870 * Adding dirty entry into seglist is not critical operation.
871 * If a given segment is one of current working segments, it won't be added.
873 static void locate_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno)
875 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
876 unsigned short valid_blocks, ckpt_valid_blocks;
877 unsigned int usable_blocks;
879 if (segno == NULL_SEGNO || IS_CURSEG(sbi, segno))
882 usable_blocks = f2fs_usable_blks_in_seg(sbi, segno);
883 mutex_lock(&dirty_i->seglist_lock);
885 valid_blocks = get_valid_blocks(sbi, segno, false);
886 ckpt_valid_blocks = get_ckpt_valid_blocks(sbi, segno, false);
888 if (valid_blocks == 0 && (!is_sbi_flag_set(sbi, SBI_CP_DISABLED) ||
889 ckpt_valid_blocks == usable_blocks)) {
890 __locate_dirty_segment(sbi, segno, PRE);
891 __remove_dirty_segment(sbi, segno, DIRTY);
892 } else if (valid_blocks < usable_blocks) {
893 __locate_dirty_segment(sbi, segno, DIRTY);
895 /* Recovery routine with SSR needs this */
896 __remove_dirty_segment(sbi, segno, DIRTY);
899 mutex_unlock(&dirty_i->seglist_lock);
902 /* This moves currently empty dirty blocks to prefree. Must hold seglist_lock */
903 void f2fs_dirty_to_prefree(struct f2fs_sb_info *sbi)
905 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
908 mutex_lock(&dirty_i->seglist_lock);
909 for_each_set_bit(segno, dirty_i->dirty_segmap[DIRTY], MAIN_SEGS(sbi)) {
910 if (get_valid_blocks(sbi, segno, false))
912 if (IS_CURSEG(sbi, segno))
914 __locate_dirty_segment(sbi, segno, PRE);
915 __remove_dirty_segment(sbi, segno, DIRTY);
917 mutex_unlock(&dirty_i->seglist_lock);
920 block_t f2fs_get_unusable_blocks(struct f2fs_sb_info *sbi)
923 (overprovision_segments(sbi) - reserved_segments(sbi));
924 block_t ovp_holes = ovp_hole_segs << sbi->log_blocks_per_seg;
925 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
926 block_t holes[2] = {0, 0}; /* DATA and NODE */
928 struct seg_entry *se;
931 mutex_lock(&dirty_i->seglist_lock);
932 for_each_set_bit(segno, dirty_i->dirty_segmap[DIRTY], MAIN_SEGS(sbi)) {
933 se = get_seg_entry(sbi, segno);
934 if (IS_NODESEG(se->type))
935 holes[NODE] += f2fs_usable_blks_in_seg(sbi, segno) -
938 holes[DATA] += f2fs_usable_blks_in_seg(sbi, segno) -
941 mutex_unlock(&dirty_i->seglist_lock);
943 unusable = holes[DATA] > holes[NODE] ? holes[DATA] : holes[NODE];
944 if (unusable > ovp_holes)
945 return unusable - ovp_holes;
949 int f2fs_disable_cp_again(struct f2fs_sb_info *sbi, block_t unusable)
952 (overprovision_segments(sbi) - reserved_segments(sbi));
953 if (unusable > F2FS_OPTION(sbi).unusable_cap)
955 if (is_sbi_flag_set(sbi, SBI_CP_DISABLED_QUICK) &&
956 dirty_segments(sbi) > ovp_hole_segs)
961 /* This is only used by SBI_CP_DISABLED */
962 static unsigned int get_free_segment(struct f2fs_sb_info *sbi)
964 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
965 unsigned int segno = 0;
967 mutex_lock(&dirty_i->seglist_lock);
968 for_each_set_bit(segno, dirty_i->dirty_segmap[DIRTY], MAIN_SEGS(sbi)) {
969 if (get_valid_blocks(sbi, segno, false))
971 if (get_ckpt_valid_blocks(sbi, segno, false))
973 mutex_unlock(&dirty_i->seglist_lock);
976 mutex_unlock(&dirty_i->seglist_lock);
980 static struct discard_cmd *__create_discard_cmd(struct f2fs_sb_info *sbi,
981 struct block_device *bdev, block_t lstart,
982 block_t start, block_t len)
984 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
985 struct list_head *pend_list;
986 struct discard_cmd *dc;
988 f2fs_bug_on(sbi, !len);
990 pend_list = &dcc->pend_list[plist_idx(len)];
992 dc = f2fs_kmem_cache_alloc(discard_cmd_slab, GFP_NOFS);
993 INIT_LIST_HEAD(&dc->list);
1002 init_completion(&dc->wait);
1003 list_add_tail(&dc->list, pend_list);
1004 spin_lock_init(&dc->lock);
1006 atomic_inc(&dcc->discard_cmd_cnt);
1007 dcc->undiscard_blks += len;
1012 static struct discard_cmd *__attach_discard_cmd(struct f2fs_sb_info *sbi,
1013 struct block_device *bdev, block_t lstart,
1014 block_t start, block_t len,
1015 struct rb_node *parent, struct rb_node **p,
1018 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1019 struct discard_cmd *dc;
1021 dc = __create_discard_cmd(sbi, bdev, lstart, start, len);
1023 rb_link_node(&dc->rb_node, parent, p);
1024 rb_insert_color_cached(&dc->rb_node, &dcc->root, leftmost);
1029 static void __detach_discard_cmd(struct discard_cmd_control *dcc,
1030 struct discard_cmd *dc)
1032 if (dc->state == D_DONE)
1033 atomic_sub(dc->queued, &dcc->queued_discard);
1035 list_del(&dc->list);
1036 rb_erase_cached(&dc->rb_node, &dcc->root);
1037 dcc->undiscard_blks -= dc->len;
1039 kmem_cache_free(discard_cmd_slab, dc);
1041 atomic_dec(&dcc->discard_cmd_cnt);
1044 static void __remove_discard_cmd(struct f2fs_sb_info *sbi,
1045 struct discard_cmd *dc)
1047 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1048 unsigned long flags;
1050 trace_f2fs_remove_discard(dc->bdev, dc->start, dc->len);
1052 spin_lock_irqsave(&dc->lock, flags);
1054 spin_unlock_irqrestore(&dc->lock, flags);
1057 spin_unlock_irqrestore(&dc->lock, flags);
1059 f2fs_bug_on(sbi, dc->ref);
1061 if (dc->error == -EOPNOTSUPP)
1066 "%sF2FS-fs (%s): Issue discard(%u, %u, %u) failed, ret: %d",
1067 KERN_INFO, sbi->sb->s_id,
1068 dc->lstart, dc->start, dc->len, dc->error);
1069 __detach_discard_cmd(dcc, dc);
1072 static void f2fs_submit_discard_endio(struct bio *bio)
1074 struct discard_cmd *dc = (struct discard_cmd *)bio->bi_private;
1075 unsigned long flags;
1077 spin_lock_irqsave(&dc->lock, flags);
1079 dc->error = blk_status_to_errno(bio->bi_status);
1081 if (!dc->bio_ref && dc->state == D_SUBMIT) {
1083 complete_all(&dc->wait);
1085 spin_unlock_irqrestore(&dc->lock, flags);
1089 static void __check_sit_bitmap(struct f2fs_sb_info *sbi,
1090 block_t start, block_t end)
1092 #ifdef CONFIG_F2FS_CHECK_FS
1093 struct seg_entry *sentry;
1095 block_t blk = start;
1096 unsigned long offset, size, max_blocks = sbi->blocks_per_seg;
1100 segno = GET_SEGNO(sbi, blk);
1101 sentry = get_seg_entry(sbi, segno);
1102 offset = GET_BLKOFF_FROM_SEG0(sbi, blk);
1104 if (end < START_BLOCK(sbi, segno + 1))
1105 size = GET_BLKOFF_FROM_SEG0(sbi, end);
1108 map = (unsigned long *)(sentry->cur_valid_map);
1109 offset = __find_rev_next_bit(map, size, offset);
1110 f2fs_bug_on(sbi, offset != size);
1111 blk = START_BLOCK(sbi, segno + 1);
1116 static void __init_discard_policy(struct f2fs_sb_info *sbi,
1117 struct discard_policy *dpolicy,
1118 int discard_type, unsigned int granularity)
1120 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1123 dpolicy->type = discard_type;
1124 dpolicy->sync = true;
1125 dpolicy->ordered = false;
1126 dpolicy->granularity = granularity;
1128 dpolicy->max_requests = DEF_MAX_DISCARD_REQUEST;
1129 dpolicy->io_aware_gran = MAX_PLIST_NUM;
1130 dpolicy->timeout = false;
1132 if (discard_type == DPOLICY_BG) {
1133 dpolicy->min_interval = DEF_MIN_DISCARD_ISSUE_TIME;
1134 dpolicy->mid_interval = DEF_MID_DISCARD_ISSUE_TIME;
1135 dpolicy->max_interval = DEF_MAX_DISCARD_ISSUE_TIME;
1136 dpolicy->io_aware = true;
1137 dpolicy->sync = false;
1138 dpolicy->ordered = true;
1139 if (utilization(sbi) > DEF_DISCARD_URGENT_UTIL) {
1140 dpolicy->granularity = 1;
1141 if (atomic_read(&dcc->discard_cmd_cnt))
1142 dpolicy->max_interval =
1143 DEF_MIN_DISCARD_ISSUE_TIME;
1145 } else if (discard_type == DPOLICY_FORCE) {
1146 dpolicy->min_interval = DEF_MIN_DISCARD_ISSUE_TIME;
1147 dpolicy->mid_interval = DEF_MID_DISCARD_ISSUE_TIME;
1148 dpolicy->max_interval = DEF_MAX_DISCARD_ISSUE_TIME;
1149 dpolicy->io_aware = false;
1150 } else if (discard_type == DPOLICY_FSTRIM) {
1151 dpolicy->io_aware = false;
1152 } else if (discard_type == DPOLICY_UMOUNT) {
1153 dpolicy->io_aware = false;
1154 /* we need to issue all to keep CP_TRIMMED_FLAG */
1155 dpolicy->granularity = 1;
1156 dpolicy->timeout = true;
1160 static void __update_discard_tree_range(struct f2fs_sb_info *sbi,
1161 struct block_device *bdev, block_t lstart,
1162 block_t start, block_t len);
1163 /* this function is copied from blkdev_issue_discard from block/blk-lib.c */
1164 static int __submit_discard_cmd(struct f2fs_sb_info *sbi,
1165 struct discard_policy *dpolicy,
1166 struct discard_cmd *dc,
1167 unsigned int *issued)
1169 struct block_device *bdev = dc->bdev;
1170 struct request_queue *q = bdev_get_queue(bdev);
1171 unsigned int max_discard_blocks =
1172 SECTOR_TO_BLOCK(q->limits.max_discard_sectors);
1173 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1174 struct list_head *wait_list = (dpolicy->type == DPOLICY_FSTRIM) ?
1175 &(dcc->fstrim_list) : &(dcc->wait_list);
1176 int flag = dpolicy->sync ? REQ_SYNC : 0;
1177 block_t lstart, start, len, total_len;
1180 if (dc->state != D_PREP)
1183 if (is_sbi_flag_set(sbi, SBI_NEED_FSCK))
1186 trace_f2fs_issue_discard(bdev, dc->start, dc->len);
1188 lstart = dc->lstart;
1195 while (total_len && *issued < dpolicy->max_requests && !err) {
1196 struct bio *bio = NULL;
1197 unsigned long flags;
1200 if (len > max_discard_blocks) {
1201 len = max_discard_blocks;
1206 if (*issued == dpolicy->max_requests)
1211 if (time_to_inject(sbi, FAULT_DISCARD)) {
1212 f2fs_show_injection_info(sbi, FAULT_DISCARD);
1216 err = __blkdev_issue_discard(bdev,
1217 SECTOR_FROM_BLOCK(start),
1218 SECTOR_FROM_BLOCK(len),
1222 spin_lock_irqsave(&dc->lock, flags);
1223 if (dc->state == D_PARTIAL)
1224 dc->state = D_SUBMIT;
1225 spin_unlock_irqrestore(&dc->lock, flags);
1230 f2fs_bug_on(sbi, !bio);
1233 * should keep before submission to avoid D_DONE
1236 spin_lock_irqsave(&dc->lock, flags);
1238 dc->state = D_SUBMIT;
1240 dc->state = D_PARTIAL;
1242 spin_unlock_irqrestore(&dc->lock, flags);
1244 atomic_inc(&dcc->queued_discard);
1246 list_move_tail(&dc->list, wait_list);
1248 /* sanity check on discard range */
1249 __check_sit_bitmap(sbi, lstart, lstart + len);
1251 bio->bi_private = dc;
1252 bio->bi_end_io = f2fs_submit_discard_endio;
1253 bio->bi_opf |= flag;
1256 atomic_inc(&dcc->issued_discard);
1258 f2fs_update_iostat(sbi, FS_DISCARD, 1);
1267 dcc->undiscard_blks -= len;
1268 __update_discard_tree_range(sbi, bdev, lstart, start, len);
1273 static void __insert_discard_tree(struct f2fs_sb_info *sbi,
1274 struct block_device *bdev, block_t lstart,
1275 block_t start, block_t len,
1276 struct rb_node **insert_p,
1277 struct rb_node *insert_parent)
1279 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1281 struct rb_node *parent = NULL;
1282 bool leftmost = true;
1284 if (insert_p && insert_parent) {
1285 parent = insert_parent;
1290 p = f2fs_lookup_rb_tree_for_insert(sbi, &dcc->root, &parent,
1293 __attach_discard_cmd(sbi, bdev, lstart, start, len, parent,
1297 static void __relocate_discard_cmd(struct discard_cmd_control *dcc,
1298 struct discard_cmd *dc)
1300 list_move_tail(&dc->list, &dcc->pend_list[plist_idx(dc->len)]);
1303 static void __punch_discard_cmd(struct f2fs_sb_info *sbi,
1304 struct discard_cmd *dc, block_t blkaddr)
1306 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1307 struct discard_info di = dc->di;
1308 bool modified = false;
1310 if (dc->state == D_DONE || dc->len == 1) {
1311 __remove_discard_cmd(sbi, dc);
1315 dcc->undiscard_blks -= di.len;
1317 if (blkaddr > di.lstart) {
1318 dc->len = blkaddr - dc->lstart;
1319 dcc->undiscard_blks += dc->len;
1320 __relocate_discard_cmd(dcc, dc);
1324 if (blkaddr < di.lstart + di.len - 1) {
1326 __insert_discard_tree(sbi, dc->bdev, blkaddr + 1,
1327 di.start + blkaddr + 1 - di.lstart,
1328 di.lstart + di.len - 1 - blkaddr,
1334 dcc->undiscard_blks += dc->len;
1335 __relocate_discard_cmd(dcc, dc);
1340 static void __update_discard_tree_range(struct f2fs_sb_info *sbi,
1341 struct block_device *bdev, block_t lstart,
1342 block_t start, block_t len)
1344 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1345 struct discard_cmd *prev_dc = NULL, *next_dc = NULL;
1346 struct discard_cmd *dc;
1347 struct discard_info di = {0};
1348 struct rb_node **insert_p = NULL, *insert_parent = NULL;
1349 struct request_queue *q = bdev_get_queue(bdev);
1350 unsigned int max_discard_blocks =
1351 SECTOR_TO_BLOCK(q->limits.max_discard_sectors);
1352 block_t end = lstart + len;
1354 dc = (struct discard_cmd *)f2fs_lookup_rb_tree_ret(&dcc->root,
1356 (struct rb_entry **)&prev_dc,
1357 (struct rb_entry **)&next_dc,
1358 &insert_p, &insert_parent, true, NULL);
1364 di.len = next_dc ? next_dc->lstart - lstart : len;
1365 di.len = min(di.len, len);
1370 struct rb_node *node;
1371 bool merged = false;
1372 struct discard_cmd *tdc = NULL;
1375 di.lstart = prev_dc->lstart + prev_dc->len;
1376 if (di.lstart < lstart)
1378 if (di.lstart >= end)
1381 if (!next_dc || next_dc->lstart > end)
1382 di.len = end - di.lstart;
1384 di.len = next_dc->lstart - di.lstart;
1385 di.start = start + di.lstart - lstart;
1391 if (prev_dc && prev_dc->state == D_PREP &&
1392 prev_dc->bdev == bdev &&
1393 __is_discard_back_mergeable(&di, &prev_dc->di,
1394 max_discard_blocks)) {
1395 prev_dc->di.len += di.len;
1396 dcc->undiscard_blks += di.len;
1397 __relocate_discard_cmd(dcc, prev_dc);
1403 if (next_dc && next_dc->state == D_PREP &&
1404 next_dc->bdev == bdev &&
1405 __is_discard_front_mergeable(&di, &next_dc->di,
1406 max_discard_blocks)) {
1407 next_dc->di.lstart = di.lstart;
1408 next_dc->di.len += di.len;
1409 next_dc->di.start = di.start;
1410 dcc->undiscard_blks += di.len;
1411 __relocate_discard_cmd(dcc, next_dc);
1413 __remove_discard_cmd(sbi, tdc);
1418 __insert_discard_tree(sbi, bdev, di.lstart, di.start,
1419 di.len, NULL, NULL);
1426 node = rb_next(&prev_dc->rb_node);
1427 next_dc = rb_entry_safe(node, struct discard_cmd, rb_node);
1431 static int __queue_discard_cmd(struct f2fs_sb_info *sbi,
1432 struct block_device *bdev, block_t blkstart, block_t blklen)
1434 block_t lblkstart = blkstart;
1436 if (!f2fs_bdev_support_discard(bdev))
1439 trace_f2fs_queue_discard(bdev, blkstart, blklen);
1441 if (f2fs_is_multi_device(sbi)) {
1442 int devi = f2fs_target_device_index(sbi, blkstart);
1444 blkstart -= FDEV(devi).start_blk;
1446 mutex_lock(&SM_I(sbi)->dcc_info->cmd_lock);
1447 __update_discard_tree_range(sbi, bdev, lblkstart, blkstart, blklen);
1448 mutex_unlock(&SM_I(sbi)->dcc_info->cmd_lock);
1452 static unsigned int __issue_discard_cmd_orderly(struct f2fs_sb_info *sbi,
1453 struct discard_policy *dpolicy)
1455 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1456 struct discard_cmd *prev_dc = NULL, *next_dc = NULL;
1457 struct rb_node **insert_p = NULL, *insert_parent = NULL;
1458 struct discard_cmd *dc;
1459 struct blk_plug plug;
1460 unsigned int pos = dcc->next_pos;
1461 unsigned int issued = 0;
1462 bool io_interrupted = false;
1464 mutex_lock(&dcc->cmd_lock);
1465 dc = (struct discard_cmd *)f2fs_lookup_rb_tree_ret(&dcc->root,
1467 (struct rb_entry **)&prev_dc,
1468 (struct rb_entry **)&next_dc,
1469 &insert_p, &insert_parent, true, NULL);
1473 blk_start_plug(&plug);
1476 struct rb_node *node;
1479 if (dc->state != D_PREP)
1482 if (dpolicy->io_aware && !is_idle(sbi, DISCARD_TIME)) {
1483 io_interrupted = true;
1487 dcc->next_pos = dc->lstart + dc->len;
1488 err = __submit_discard_cmd(sbi, dpolicy, dc, &issued);
1490 if (issued >= dpolicy->max_requests)
1493 node = rb_next(&dc->rb_node);
1495 __remove_discard_cmd(sbi, dc);
1496 dc = rb_entry_safe(node, struct discard_cmd, rb_node);
1499 blk_finish_plug(&plug);
1504 mutex_unlock(&dcc->cmd_lock);
1506 if (!issued && io_interrupted)
1511 static unsigned int __wait_all_discard_cmd(struct f2fs_sb_info *sbi,
1512 struct discard_policy *dpolicy);
1514 static int __issue_discard_cmd(struct f2fs_sb_info *sbi,
1515 struct discard_policy *dpolicy)
1517 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1518 struct list_head *pend_list;
1519 struct discard_cmd *dc, *tmp;
1520 struct blk_plug plug;
1522 bool io_interrupted = false;
1524 if (dpolicy->timeout)
1525 f2fs_update_time(sbi, UMOUNT_DISCARD_TIMEOUT);
1529 for (i = MAX_PLIST_NUM - 1; i >= 0; i--) {
1530 if (dpolicy->timeout &&
1531 f2fs_time_over(sbi, UMOUNT_DISCARD_TIMEOUT))
1534 if (i + 1 < dpolicy->granularity)
1537 if (i < DEFAULT_DISCARD_GRANULARITY && dpolicy->ordered)
1538 return __issue_discard_cmd_orderly(sbi, dpolicy);
1540 pend_list = &dcc->pend_list[i];
1542 mutex_lock(&dcc->cmd_lock);
1543 if (list_empty(pend_list))
1545 if (unlikely(dcc->rbtree_check))
1546 f2fs_bug_on(sbi, !f2fs_check_rb_tree_consistence(sbi,
1547 &dcc->root, false));
1548 blk_start_plug(&plug);
1549 list_for_each_entry_safe(dc, tmp, pend_list, list) {
1550 f2fs_bug_on(sbi, dc->state != D_PREP);
1552 if (dpolicy->timeout &&
1553 f2fs_time_over(sbi, UMOUNT_DISCARD_TIMEOUT))
1556 if (dpolicy->io_aware && i < dpolicy->io_aware_gran &&
1557 !is_idle(sbi, DISCARD_TIME)) {
1558 io_interrupted = true;
1562 __submit_discard_cmd(sbi, dpolicy, dc, &issued);
1564 if (issued >= dpolicy->max_requests)
1567 blk_finish_plug(&plug);
1569 mutex_unlock(&dcc->cmd_lock);
1571 if (issued >= dpolicy->max_requests || io_interrupted)
1575 if (dpolicy->type == DPOLICY_UMOUNT && issued) {
1576 __wait_all_discard_cmd(sbi, dpolicy);
1580 if (!issued && io_interrupted)
1586 static bool __drop_discard_cmd(struct f2fs_sb_info *sbi)
1588 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1589 struct list_head *pend_list;
1590 struct discard_cmd *dc, *tmp;
1592 bool dropped = false;
1594 mutex_lock(&dcc->cmd_lock);
1595 for (i = MAX_PLIST_NUM - 1; i >= 0; i--) {
1596 pend_list = &dcc->pend_list[i];
1597 list_for_each_entry_safe(dc, tmp, pend_list, list) {
1598 f2fs_bug_on(sbi, dc->state != D_PREP);
1599 __remove_discard_cmd(sbi, dc);
1603 mutex_unlock(&dcc->cmd_lock);
1608 void f2fs_drop_discard_cmd(struct f2fs_sb_info *sbi)
1610 __drop_discard_cmd(sbi);
1613 static unsigned int __wait_one_discard_bio(struct f2fs_sb_info *sbi,
1614 struct discard_cmd *dc)
1616 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1617 unsigned int len = 0;
1619 wait_for_completion_io(&dc->wait);
1620 mutex_lock(&dcc->cmd_lock);
1621 f2fs_bug_on(sbi, dc->state != D_DONE);
1626 __remove_discard_cmd(sbi, dc);
1628 mutex_unlock(&dcc->cmd_lock);
1633 static unsigned int __wait_discard_cmd_range(struct f2fs_sb_info *sbi,
1634 struct discard_policy *dpolicy,
1635 block_t start, block_t end)
1637 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1638 struct list_head *wait_list = (dpolicy->type == DPOLICY_FSTRIM) ?
1639 &(dcc->fstrim_list) : &(dcc->wait_list);
1640 struct discard_cmd *dc, *tmp;
1642 unsigned int trimmed = 0;
1647 mutex_lock(&dcc->cmd_lock);
1648 list_for_each_entry_safe(dc, tmp, wait_list, list) {
1649 if (dc->lstart + dc->len <= start || end <= dc->lstart)
1651 if (dc->len < dpolicy->granularity)
1653 if (dc->state == D_DONE && !dc->ref) {
1654 wait_for_completion_io(&dc->wait);
1657 __remove_discard_cmd(sbi, dc);
1664 mutex_unlock(&dcc->cmd_lock);
1667 trimmed += __wait_one_discard_bio(sbi, dc);
1674 static unsigned int __wait_all_discard_cmd(struct f2fs_sb_info *sbi,
1675 struct discard_policy *dpolicy)
1677 struct discard_policy dp;
1678 unsigned int discard_blks;
1681 return __wait_discard_cmd_range(sbi, dpolicy, 0, UINT_MAX);
1684 __init_discard_policy(sbi, &dp, DPOLICY_FSTRIM, 1);
1685 discard_blks = __wait_discard_cmd_range(sbi, &dp, 0, UINT_MAX);
1686 __init_discard_policy(sbi, &dp, DPOLICY_UMOUNT, 1);
1687 discard_blks += __wait_discard_cmd_range(sbi, &dp, 0, UINT_MAX);
1689 return discard_blks;
1692 /* This should be covered by global mutex, &sit_i->sentry_lock */
1693 static void f2fs_wait_discard_bio(struct f2fs_sb_info *sbi, block_t blkaddr)
1695 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1696 struct discard_cmd *dc;
1697 bool need_wait = false;
1699 mutex_lock(&dcc->cmd_lock);
1700 dc = (struct discard_cmd *)f2fs_lookup_rb_tree(&dcc->root,
1703 if (dc->state == D_PREP) {
1704 __punch_discard_cmd(sbi, dc, blkaddr);
1710 mutex_unlock(&dcc->cmd_lock);
1713 __wait_one_discard_bio(sbi, dc);
1716 void f2fs_stop_discard_thread(struct f2fs_sb_info *sbi)
1718 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1720 if (dcc && dcc->f2fs_issue_discard) {
1721 struct task_struct *discard_thread = dcc->f2fs_issue_discard;
1723 dcc->f2fs_issue_discard = NULL;
1724 kthread_stop(discard_thread);
1728 /* This comes from f2fs_put_super */
1729 bool f2fs_issue_discard_timeout(struct f2fs_sb_info *sbi)
1731 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1732 struct discard_policy dpolicy;
1735 __init_discard_policy(sbi, &dpolicy, DPOLICY_UMOUNT,
1736 dcc->discard_granularity);
1737 __issue_discard_cmd(sbi, &dpolicy);
1738 dropped = __drop_discard_cmd(sbi);
1740 /* just to make sure there is no pending discard commands */
1741 __wait_all_discard_cmd(sbi, NULL);
1743 f2fs_bug_on(sbi, atomic_read(&dcc->discard_cmd_cnt));
1747 static int issue_discard_thread(void *data)
1749 struct f2fs_sb_info *sbi = data;
1750 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1751 wait_queue_head_t *q = &dcc->discard_wait_queue;
1752 struct discard_policy dpolicy;
1753 unsigned int wait_ms = DEF_MIN_DISCARD_ISSUE_TIME;
1759 if (sbi->gc_mode == GC_URGENT_HIGH ||
1760 !f2fs_available_free_memory(sbi, DISCARD_CACHE))
1761 __init_discard_policy(sbi, &dpolicy, DPOLICY_FORCE, 1);
1763 __init_discard_policy(sbi, &dpolicy, DPOLICY_BG,
1764 dcc->discard_granularity);
1766 if (!atomic_read(&dcc->discard_cmd_cnt))
1767 wait_ms = dpolicy.max_interval;
1769 wait_event_interruptible_timeout(*q,
1770 kthread_should_stop() || freezing(current) ||
1772 msecs_to_jiffies(wait_ms));
1774 if (dcc->discard_wake)
1775 dcc->discard_wake = 0;
1777 /* clean up pending candidates before going to sleep */
1778 if (atomic_read(&dcc->queued_discard))
1779 __wait_all_discard_cmd(sbi, NULL);
1781 if (try_to_freeze())
1783 if (f2fs_readonly(sbi->sb))
1785 if (kthread_should_stop())
1787 if (is_sbi_flag_set(sbi, SBI_NEED_FSCK)) {
1788 wait_ms = dpolicy.max_interval;
1791 if (!atomic_read(&dcc->discard_cmd_cnt))
1794 sb_start_intwrite(sbi->sb);
1796 issued = __issue_discard_cmd(sbi, &dpolicy);
1798 __wait_all_discard_cmd(sbi, &dpolicy);
1799 wait_ms = dpolicy.min_interval;
1800 } else if (issued == -1) {
1801 wait_ms = f2fs_time_to_wait(sbi, DISCARD_TIME);
1803 wait_ms = dpolicy.mid_interval;
1805 wait_ms = dpolicy.max_interval;
1808 sb_end_intwrite(sbi->sb);
1810 } while (!kthread_should_stop());
1814 #ifdef CONFIG_BLK_DEV_ZONED
1815 static int __f2fs_issue_discard_zone(struct f2fs_sb_info *sbi,
1816 struct block_device *bdev, block_t blkstart, block_t blklen)
1818 sector_t sector, nr_sects;
1819 block_t lblkstart = blkstart;
1822 if (f2fs_is_multi_device(sbi)) {
1823 devi = f2fs_target_device_index(sbi, blkstart);
1824 if (blkstart < FDEV(devi).start_blk ||
1825 blkstart > FDEV(devi).end_blk) {
1826 f2fs_err(sbi, "Invalid block %x", blkstart);
1829 blkstart -= FDEV(devi).start_blk;
1832 /* For sequential zones, reset the zone write pointer */
1833 if (f2fs_blkz_is_seq(sbi, devi, blkstart)) {
1834 sector = SECTOR_FROM_BLOCK(blkstart);
1835 nr_sects = SECTOR_FROM_BLOCK(blklen);
1837 if (sector & (bdev_zone_sectors(bdev) - 1) ||
1838 nr_sects != bdev_zone_sectors(bdev)) {
1839 f2fs_err(sbi, "(%d) %s: Unaligned zone reset attempted (block %x + %x)",
1840 devi, sbi->s_ndevs ? FDEV(devi).path : "",
1844 trace_f2fs_issue_reset_zone(bdev, blkstart);
1845 return blkdev_zone_mgmt(bdev, REQ_OP_ZONE_RESET,
1846 sector, nr_sects, GFP_NOFS);
1849 /* For conventional zones, use regular discard if supported */
1850 return __queue_discard_cmd(sbi, bdev, lblkstart, blklen);
1854 static int __issue_discard_async(struct f2fs_sb_info *sbi,
1855 struct block_device *bdev, block_t blkstart, block_t blklen)
1857 #ifdef CONFIG_BLK_DEV_ZONED
1858 if (f2fs_sb_has_blkzoned(sbi) && bdev_is_zoned(bdev))
1859 return __f2fs_issue_discard_zone(sbi, bdev, blkstart, blklen);
1861 return __queue_discard_cmd(sbi, bdev, blkstart, blklen);
1864 static int f2fs_issue_discard(struct f2fs_sb_info *sbi,
1865 block_t blkstart, block_t blklen)
1867 sector_t start = blkstart, len = 0;
1868 struct block_device *bdev;
1869 struct seg_entry *se;
1870 unsigned int offset;
1874 bdev = f2fs_target_device(sbi, blkstart, NULL);
1876 for (i = blkstart; i < blkstart + blklen; i++, len++) {
1878 struct block_device *bdev2 =
1879 f2fs_target_device(sbi, i, NULL);
1881 if (bdev2 != bdev) {
1882 err = __issue_discard_async(sbi, bdev,
1892 se = get_seg_entry(sbi, GET_SEGNO(sbi, i));
1893 offset = GET_BLKOFF_FROM_SEG0(sbi, i);
1895 if (!f2fs_test_and_set_bit(offset, se->discard_map))
1896 sbi->discard_blks--;
1900 err = __issue_discard_async(sbi, bdev, start, len);
1904 static bool add_discard_addrs(struct f2fs_sb_info *sbi, struct cp_control *cpc,
1907 int entries = SIT_VBLOCK_MAP_SIZE / sizeof(unsigned long);
1908 int max_blocks = sbi->blocks_per_seg;
1909 struct seg_entry *se = get_seg_entry(sbi, cpc->trim_start);
1910 unsigned long *cur_map = (unsigned long *)se->cur_valid_map;
1911 unsigned long *ckpt_map = (unsigned long *)se->ckpt_valid_map;
1912 unsigned long *discard_map = (unsigned long *)se->discard_map;
1913 unsigned long *dmap = SIT_I(sbi)->tmp_map;
1914 unsigned int start = 0, end = -1;
1915 bool force = (cpc->reason & CP_DISCARD);
1916 struct discard_entry *de = NULL;
1917 struct list_head *head = &SM_I(sbi)->dcc_info->entry_list;
1920 if (se->valid_blocks == max_blocks || !f2fs_hw_support_discard(sbi))
1924 if (!f2fs_realtime_discard_enable(sbi) || !se->valid_blocks ||
1925 SM_I(sbi)->dcc_info->nr_discards >=
1926 SM_I(sbi)->dcc_info->max_discards)
1930 /* SIT_VBLOCK_MAP_SIZE should be multiple of sizeof(unsigned long) */
1931 for (i = 0; i < entries; i++)
1932 dmap[i] = force ? ~ckpt_map[i] & ~discard_map[i] :
1933 (cur_map[i] ^ ckpt_map[i]) & ckpt_map[i];
1935 while (force || SM_I(sbi)->dcc_info->nr_discards <=
1936 SM_I(sbi)->dcc_info->max_discards) {
1937 start = __find_rev_next_bit(dmap, max_blocks, end + 1);
1938 if (start >= max_blocks)
1941 end = __find_rev_next_zero_bit(dmap, max_blocks, start + 1);
1942 if (force && start && end != max_blocks
1943 && (end - start) < cpc->trim_minlen)
1950 de = f2fs_kmem_cache_alloc(discard_entry_slab,
1952 de->start_blkaddr = START_BLOCK(sbi, cpc->trim_start);
1953 list_add_tail(&de->list, head);
1956 for (i = start; i < end; i++)
1957 __set_bit_le(i, (void *)de->discard_map);
1959 SM_I(sbi)->dcc_info->nr_discards += end - start;
1964 static void release_discard_addr(struct discard_entry *entry)
1966 list_del(&entry->list);
1967 kmem_cache_free(discard_entry_slab, entry);
1970 void f2fs_release_discard_addrs(struct f2fs_sb_info *sbi)
1972 struct list_head *head = &(SM_I(sbi)->dcc_info->entry_list);
1973 struct discard_entry *entry, *this;
1976 list_for_each_entry_safe(entry, this, head, list)
1977 release_discard_addr(entry);
1981 * Should call f2fs_clear_prefree_segments after checkpoint is done.
1983 static void set_prefree_as_free_segments(struct f2fs_sb_info *sbi)
1985 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
1988 mutex_lock(&dirty_i->seglist_lock);
1989 for_each_set_bit(segno, dirty_i->dirty_segmap[PRE], MAIN_SEGS(sbi))
1990 __set_test_and_free(sbi, segno, false);
1991 mutex_unlock(&dirty_i->seglist_lock);
1994 void f2fs_clear_prefree_segments(struct f2fs_sb_info *sbi,
1995 struct cp_control *cpc)
1997 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1998 struct list_head *head = &dcc->entry_list;
1999 struct discard_entry *entry, *this;
2000 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
2001 unsigned long *prefree_map = dirty_i->dirty_segmap[PRE];
2002 unsigned int start = 0, end = -1;
2003 unsigned int secno, start_segno;
2004 bool force = (cpc->reason & CP_DISCARD);
2005 bool need_align = f2fs_lfs_mode(sbi) && __is_large_section(sbi);
2007 mutex_lock(&dirty_i->seglist_lock);
2012 if (need_align && end != -1)
2014 start = find_next_bit(prefree_map, MAIN_SEGS(sbi), end + 1);
2015 if (start >= MAIN_SEGS(sbi))
2017 end = find_next_zero_bit(prefree_map, MAIN_SEGS(sbi),
2021 start = rounddown(start, sbi->segs_per_sec);
2022 end = roundup(end, sbi->segs_per_sec);
2025 for (i = start; i < end; i++) {
2026 if (test_and_clear_bit(i, prefree_map))
2027 dirty_i->nr_dirty[PRE]--;
2030 if (!f2fs_realtime_discard_enable(sbi))
2033 if (force && start >= cpc->trim_start &&
2034 (end - 1) <= cpc->trim_end)
2037 if (!f2fs_lfs_mode(sbi) || !__is_large_section(sbi)) {
2038 f2fs_issue_discard(sbi, START_BLOCK(sbi, start),
2039 (end - start) << sbi->log_blocks_per_seg);
2043 secno = GET_SEC_FROM_SEG(sbi, start);
2044 start_segno = GET_SEG_FROM_SEC(sbi, secno);
2045 if (!IS_CURSEC(sbi, secno) &&
2046 !get_valid_blocks(sbi, start, true))
2047 f2fs_issue_discard(sbi, START_BLOCK(sbi, start_segno),
2048 sbi->segs_per_sec << sbi->log_blocks_per_seg);
2050 start = start_segno + sbi->segs_per_sec;
2056 mutex_unlock(&dirty_i->seglist_lock);
2058 /* send small discards */
2059 list_for_each_entry_safe(entry, this, head, list) {
2060 unsigned int cur_pos = 0, next_pos, len, total_len = 0;
2061 bool is_valid = test_bit_le(0, entry->discard_map);
2065 next_pos = find_next_zero_bit_le(entry->discard_map,
2066 sbi->blocks_per_seg, cur_pos);
2067 len = next_pos - cur_pos;
2069 if (f2fs_sb_has_blkzoned(sbi) ||
2070 (force && len < cpc->trim_minlen))
2073 f2fs_issue_discard(sbi, entry->start_blkaddr + cur_pos,
2077 next_pos = find_next_bit_le(entry->discard_map,
2078 sbi->blocks_per_seg, cur_pos);
2082 is_valid = !is_valid;
2084 if (cur_pos < sbi->blocks_per_seg)
2087 release_discard_addr(entry);
2088 dcc->nr_discards -= total_len;
2091 wake_up_discard_thread(sbi, false);
2094 static int create_discard_cmd_control(struct f2fs_sb_info *sbi)
2096 dev_t dev = sbi->sb->s_bdev->bd_dev;
2097 struct discard_cmd_control *dcc;
2100 if (SM_I(sbi)->dcc_info) {
2101 dcc = SM_I(sbi)->dcc_info;
2105 dcc = f2fs_kzalloc(sbi, sizeof(struct discard_cmd_control), GFP_KERNEL);
2109 dcc->discard_granularity = DEFAULT_DISCARD_GRANULARITY;
2110 INIT_LIST_HEAD(&dcc->entry_list);
2111 for (i = 0; i < MAX_PLIST_NUM; i++)
2112 INIT_LIST_HEAD(&dcc->pend_list[i]);
2113 INIT_LIST_HEAD(&dcc->wait_list);
2114 INIT_LIST_HEAD(&dcc->fstrim_list);
2115 mutex_init(&dcc->cmd_lock);
2116 atomic_set(&dcc->issued_discard, 0);
2117 atomic_set(&dcc->queued_discard, 0);
2118 atomic_set(&dcc->discard_cmd_cnt, 0);
2119 dcc->nr_discards = 0;
2120 dcc->max_discards = MAIN_SEGS(sbi) << sbi->log_blocks_per_seg;
2121 dcc->undiscard_blks = 0;
2123 dcc->root = RB_ROOT_CACHED;
2124 dcc->rbtree_check = false;
2126 init_waitqueue_head(&dcc->discard_wait_queue);
2127 SM_I(sbi)->dcc_info = dcc;
2129 dcc->f2fs_issue_discard = kthread_run(issue_discard_thread, sbi,
2130 "f2fs_discard-%u:%u", MAJOR(dev), MINOR(dev));
2131 if (IS_ERR(dcc->f2fs_issue_discard)) {
2132 err = PTR_ERR(dcc->f2fs_issue_discard);
2134 SM_I(sbi)->dcc_info = NULL;
2141 static void destroy_discard_cmd_control(struct f2fs_sb_info *sbi)
2143 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
2148 f2fs_stop_discard_thread(sbi);
2151 * Recovery can cache discard commands, so in error path of
2152 * fill_super(), it needs to give a chance to handle them.
2154 if (unlikely(atomic_read(&dcc->discard_cmd_cnt)))
2155 f2fs_issue_discard_timeout(sbi);
2158 SM_I(sbi)->dcc_info = NULL;
2161 static bool __mark_sit_entry_dirty(struct f2fs_sb_info *sbi, unsigned int segno)
2163 struct sit_info *sit_i = SIT_I(sbi);
2165 if (!__test_and_set_bit(segno, sit_i->dirty_sentries_bitmap)) {
2166 sit_i->dirty_sentries++;
2173 static void __set_sit_entry_type(struct f2fs_sb_info *sbi, int type,
2174 unsigned int segno, int modified)
2176 struct seg_entry *se = get_seg_entry(sbi, segno);
2180 __mark_sit_entry_dirty(sbi, segno);
2183 static inline unsigned long long get_segment_mtime(struct f2fs_sb_info *sbi,
2186 unsigned int segno = GET_SEGNO(sbi, blkaddr);
2188 if (segno == NULL_SEGNO)
2190 return get_seg_entry(sbi, segno)->mtime;
2193 static void update_segment_mtime(struct f2fs_sb_info *sbi, block_t blkaddr,
2194 unsigned long long old_mtime)
2196 struct seg_entry *se;
2197 unsigned int segno = GET_SEGNO(sbi, blkaddr);
2198 unsigned long long ctime = get_mtime(sbi, false);
2199 unsigned long long mtime = old_mtime ? old_mtime : ctime;
2201 if (segno == NULL_SEGNO)
2204 se = get_seg_entry(sbi, segno);
2209 se->mtime = div_u64(se->mtime * se->valid_blocks + mtime,
2210 se->valid_blocks + 1);
2212 if (ctime > SIT_I(sbi)->max_mtime)
2213 SIT_I(sbi)->max_mtime = ctime;
2216 static void update_sit_entry(struct f2fs_sb_info *sbi, block_t blkaddr, int del)
2218 struct seg_entry *se;
2219 unsigned int segno, offset;
2220 long int new_vblocks;
2222 #ifdef CONFIG_F2FS_CHECK_FS
2226 segno = GET_SEGNO(sbi, blkaddr);
2228 se = get_seg_entry(sbi, segno);
2229 new_vblocks = se->valid_blocks + del;
2230 offset = GET_BLKOFF_FROM_SEG0(sbi, blkaddr);
2232 f2fs_bug_on(sbi, (new_vblocks < 0 ||
2233 (new_vblocks > f2fs_usable_blks_in_seg(sbi, segno))));
2235 se->valid_blocks = new_vblocks;
2237 /* Update valid block bitmap */
2239 exist = f2fs_test_and_set_bit(offset, se->cur_valid_map);
2240 #ifdef CONFIG_F2FS_CHECK_FS
2241 mir_exist = f2fs_test_and_set_bit(offset,
2242 se->cur_valid_map_mir);
2243 if (unlikely(exist != mir_exist)) {
2244 f2fs_err(sbi, "Inconsistent error when setting bitmap, blk:%u, old bit:%d",
2246 f2fs_bug_on(sbi, 1);
2249 if (unlikely(exist)) {
2250 f2fs_err(sbi, "Bitmap was wrongly set, blk:%u",
2252 f2fs_bug_on(sbi, 1);
2257 if (!f2fs_test_and_set_bit(offset, se->discard_map))
2258 sbi->discard_blks--;
2261 * SSR should never reuse block which is checkpointed
2262 * or newly invalidated.
2264 if (!is_sbi_flag_set(sbi, SBI_CP_DISABLED)) {
2265 if (!f2fs_test_and_set_bit(offset, se->ckpt_valid_map))
2266 se->ckpt_valid_blocks++;
2269 exist = f2fs_test_and_clear_bit(offset, se->cur_valid_map);
2270 #ifdef CONFIG_F2FS_CHECK_FS
2271 mir_exist = f2fs_test_and_clear_bit(offset,
2272 se->cur_valid_map_mir);
2273 if (unlikely(exist != mir_exist)) {
2274 f2fs_err(sbi, "Inconsistent error when clearing bitmap, blk:%u, old bit:%d",
2276 f2fs_bug_on(sbi, 1);
2279 if (unlikely(!exist)) {
2280 f2fs_err(sbi, "Bitmap was wrongly cleared, blk:%u",
2282 f2fs_bug_on(sbi, 1);
2285 } else if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
2287 * If checkpoints are off, we must not reuse data that
2288 * was used in the previous checkpoint. If it was used
2289 * before, we must track that to know how much space we
2292 if (f2fs_test_bit(offset, se->ckpt_valid_map)) {
2293 spin_lock(&sbi->stat_lock);
2294 sbi->unusable_block_count++;
2295 spin_unlock(&sbi->stat_lock);
2299 if (f2fs_test_and_clear_bit(offset, se->discard_map))
2300 sbi->discard_blks++;
2302 if (!f2fs_test_bit(offset, se->ckpt_valid_map))
2303 se->ckpt_valid_blocks += del;
2305 __mark_sit_entry_dirty(sbi, segno);
2307 /* update total number of valid blocks to be written in ckpt area */
2308 SIT_I(sbi)->written_valid_blocks += del;
2310 if (__is_large_section(sbi))
2311 get_sec_entry(sbi, segno)->valid_blocks += del;
2314 void f2fs_invalidate_blocks(struct f2fs_sb_info *sbi, block_t addr)
2316 unsigned int segno = GET_SEGNO(sbi, addr);
2317 struct sit_info *sit_i = SIT_I(sbi);
2319 f2fs_bug_on(sbi, addr == NULL_ADDR);
2320 if (addr == NEW_ADDR || addr == COMPRESS_ADDR)
2323 invalidate_mapping_pages(META_MAPPING(sbi), addr, addr);
2325 /* add it into sit main buffer */
2326 down_write(&sit_i->sentry_lock);
2328 update_segment_mtime(sbi, addr, 0);
2329 update_sit_entry(sbi, addr, -1);
2331 /* add it into dirty seglist */
2332 locate_dirty_segment(sbi, segno);
2334 up_write(&sit_i->sentry_lock);
2337 bool f2fs_is_checkpointed_data(struct f2fs_sb_info *sbi, block_t blkaddr)
2339 struct sit_info *sit_i = SIT_I(sbi);
2340 unsigned int segno, offset;
2341 struct seg_entry *se;
2344 if (!__is_valid_data_blkaddr(blkaddr))
2347 down_read(&sit_i->sentry_lock);
2349 segno = GET_SEGNO(sbi, blkaddr);
2350 se = get_seg_entry(sbi, segno);
2351 offset = GET_BLKOFF_FROM_SEG0(sbi, blkaddr);
2353 if (f2fs_test_bit(offset, se->ckpt_valid_map))
2356 up_read(&sit_i->sentry_lock);
2362 * This function should be resided under the curseg_mutex lock
2364 static void __add_sum_entry(struct f2fs_sb_info *sbi, int type,
2365 struct f2fs_summary *sum)
2367 struct curseg_info *curseg = CURSEG_I(sbi, type);
2368 void *addr = curseg->sum_blk;
2370 addr += curseg->next_blkoff * sizeof(struct f2fs_summary);
2371 memcpy(addr, sum, sizeof(struct f2fs_summary));
2375 * Calculate the number of current summary pages for writing
2377 int f2fs_npages_for_summary_flush(struct f2fs_sb_info *sbi, bool for_ra)
2379 int valid_sum_count = 0;
2382 for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) {
2383 if (sbi->ckpt->alloc_type[i] == SSR)
2384 valid_sum_count += sbi->blocks_per_seg;
2387 valid_sum_count += le16_to_cpu(
2388 F2FS_CKPT(sbi)->cur_data_blkoff[i]);
2390 valid_sum_count += curseg_blkoff(sbi, i);
2394 sum_in_page = (PAGE_SIZE - 2 * SUM_JOURNAL_SIZE -
2395 SUM_FOOTER_SIZE) / SUMMARY_SIZE;
2396 if (valid_sum_count <= sum_in_page)
2398 else if ((valid_sum_count - sum_in_page) <=
2399 (PAGE_SIZE - SUM_FOOTER_SIZE) / SUMMARY_SIZE)
2405 * Caller should put this summary page
2407 struct page *f2fs_get_sum_page(struct f2fs_sb_info *sbi, unsigned int segno)
2409 if (unlikely(f2fs_cp_error(sbi)))
2410 return ERR_PTR(-EIO);
2411 return f2fs_get_meta_page_retry(sbi, GET_SUM_BLOCK(sbi, segno));
2414 void f2fs_update_meta_page(struct f2fs_sb_info *sbi,
2415 void *src, block_t blk_addr)
2417 struct page *page = f2fs_grab_meta_page(sbi, blk_addr);
2419 memcpy(page_address(page), src, PAGE_SIZE);
2420 set_page_dirty(page);
2421 f2fs_put_page(page, 1);
2424 static void write_sum_page(struct f2fs_sb_info *sbi,
2425 struct f2fs_summary_block *sum_blk, block_t blk_addr)
2427 f2fs_update_meta_page(sbi, (void *)sum_blk, blk_addr);
2430 static void write_current_sum_page(struct f2fs_sb_info *sbi,
2431 int type, block_t blk_addr)
2433 struct curseg_info *curseg = CURSEG_I(sbi, type);
2434 struct page *page = f2fs_grab_meta_page(sbi, blk_addr);
2435 struct f2fs_summary_block *src = curseg->sum_blk;
2436 struct f2fs_summary_block *dst;
2438 dst = (struct f2fs_summary_block *)page_address(page);
2439 memset(dst, 0, PAGE_SIZE);
2441 mutex_lock(&curseg->curseg_mutex);
2443 down_read(&curseg->journal_rwsem);
2444 memcpy(&dst->journal, curseg->journal, SUM_JOURNAL_SIZE);
2445 up_read(&curseg->journal_rwsem);
2447 memcpy(dst->entries, src->entries, SUM_ENTRY_SIZE);
2448 memcpy(&dst->footer, &src->footer, SUM_FOOTER_SIZE);
2450 mutex_unlock(&curseg->curseg_mutex);
2452 set_page_dirty(page);
2453 f2fs_put_page(page, 1);
2456 static int is_next_segment_free(struct f2fs_sb_info *sbi,
2457 struct curseg_info *curseg, int type)
2459 unsigned int segno = curseg->segno + 1;
2460 struct free_segmap_info *free_i = FREE_I(sbi);
2462 if (segno < MAIN_SEGS(sbi) && segno % sbi->segs_per_sec)
2463 return !test_bit(segno, free_i->free_segmap);
2468 * Find a new segment from the free segments bitmap to right order
2469 * This function should be returned with success, otherwise BUG
2471 static void get_new_segment(struct f2fs_sb_info *sbi,
2472 unsigned int *newseg, bool new_sec, int dir)
2474 struct free_segmap_info *free_i = FREE_I(sbi);
2475 unsigned int segno, secno, zoneno;
2476 unsigned int total_zones = MAIN_SECS(sbi) / sbi->secs_per_zone;
2477 unsigned int hint = GET_SEC_FROM_SEG(sbi, *newseg);
2478 unsigned int old_zoneno = GET_ZONE_FROM_SEG(sbi, *newseg);
2479 unsigned int left_start = hint;
2484 spin_lock(&free_i->segmap_lock);
2486 if (!new_sec && ((*newseg + 1) % sbi->segs_per_sec)) {
2487 segno = find_next_zero_bit(free_i->free_segmap,
2488 GET_SEG_FROM_SEC(sbi, hint + 1), *newseg + 1);
2489 if (segno < GET_SEG_FROM_SEC(sbi, hint + 1))
2493 secno = find_next_zero_bit(free_i->free_secmap, MAIN_SECS(sbi), hint);
2494 if (secno >= MAIN_SECS(sbi)) {
2495 if (dir == ALLOC_RIGHT) {
2496 secno = find_next_zero_bit(free_i->free_secmap,
2498 f2fs_bug_on(sbi, secno >= MAIN_SECS(sbi));
2501 left_start = hint - 1;
2507 while (test_bit(left_start, free_i->free_secmap)) {
2508 if (left_start > 0) {
2512 left_start = find_next_zero_bit(free_i->free_secmap,
2514 f2fs_bug_on(sbi, left_start >= MAIN_SECS(sbi));
2519 segno = GET_SEG_FROM_SEC(sbi, secno);
2520 zoneno = GET_ZONE_FROM_SEC(sbi, secno);
2522 /* give up on finding another zone */
2525 if (sbi->secs_per_zone == 1)
2527 if (zoneno == old_zoneno)
2529 if (dir == ALLOC_LEFT) {
2530 if (!go_left && zoneno + 1 >= total_zones)
2532 if (go_left && zoneno == 0)
2535 for (i = 0; i < NR_CURSEG_TYPE; i++)
2536 if (CURSEG_I(sbi, i)->zone == zoneno)
2539 if (i < NR_CURSEG_TYPE) {
2540 /* zone is in user, try another */
2542 hint = zoneno * sbi->secs_per_zone - 1;
2543 else if (zoneno + 1 >= total_zones)
2546 hint = (zoneno + 1) * sbi->secs_per_zone;
2548 goto find_other_zone;
2551 /* set it as dirty segment in free segmap */
2552 f2fs_bug_on(sbi, test_bit(segno, free_i->free_segmap));
2553 __set_inuse(sbi, segno);
2555 spin_unlock(&free_i->segmap_lock);
2558 static void reset_curseg(struct f2fs_sb_info *sbi, int type, int modified)
2560 struct curseg_info *curseg = CURSEG_I(sbi, type);
2561 struct summary_footer *sum_footer;
2562 unsigned short seg_type = curseg->seg_type;
2564 curseg->inited = true;
2565 curseg->segno = curseg->next_segno;
2566 curseg->zone = GET_ZONE_FROM_SEG(sbi, curseg->segno);
2567 curseg->next_blkoff = 0;
2568 curseg->next_segno = NULL_SEGNO;
2570 sum_footer = &(curseg->sum_blk->footer);
2571 memset(sum_footer, 0, sizeof(struct summary_footer));
2573 sanity_check_seg_type(sbi, seg_type);
2575 if (IS_DATASEG(seg_type))
2576 SET_SUM_TYPE(sum_footer, SUM_TYPE_DATA);
2577 if (IS_NODESEG(seg_type))
2578 SET_SUM_TYPE(sum_footer, SUM_TYPE_NODE);
2579 __set_sit_entry_type(sbi, seg_type, curseg->segno, modified);
2582 static unsigned int __get_next_segno(struct f2fs_sb_info *sbi, int type)
2584 struct curseg_info *curseg = CURSEG_I(sbi, type);
2585 unsigned short seg_type = curseg->seg_type;
2587 sanity_check_seg_type(sbi, seg_type);
2589 /* if segs_per_sec is large than 1, we need to keep original policy. */
2590 if (__is_large_section(sbi))
2591 return curseg->segno;
2593 /* inmem log may not locate on any segment after mount */
2594 if (!curseg->inited)
2597 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
2600 if (test_opt(sbi, NOHEAP) &&
2601 (seg_type == CURSEG_HOT_DATA || IS_NODESEG(seg_type)))
2604 if (SIT_I(sbi)->last_victim[ALLOC_NEXT])
2605 return SIT_I(sbi)->last_victim[ALLOC_NEXT];
2607 /* find segments from 0 to reuse freed segments */
2608 if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_REUSE)
2611 return curseg->segno;
2615 * Allocate a current working segment.
2616 * This function always allocates a free segment in LFS manner.
2618 static void new_curseg(struct f2fs_sb_info *sbi, int type, bool new_sec)
2620 struct curseg_info *curseg = CURSEG_I(sbi, type);
2621 unsigned short seg_type = curseg->seg_type;
2622 unsigned int segno = curseg->segno;
2623 int dir = ALLOC_LEFT;
2626 write_sum_page(sbi, curseg->sum_blk,
2627 GET_SUM_BLOCK(sbi, segno));
2628 if (seg_type == CURSEG_WARM_DATA || seg_type == CURSEG_COLD_DATA)
2631 if (test_opt(sbi, NOHEAP))
2634 segno = __get_next_segno(sbi, type);
2635 get_new_segment(sbi, &segno, new_sec, dir);
2636 curseg->next_segno = segno;
2637 reset_curseg(sbi, type, 1);
2638 curseg->alloc_type = LFS;
2641 static int __next_free_blkoff(struct f2fs_sb_info *sbi,
2642 int segno, block_t start)
2644 struct seg_entry *se = get_seg_entry(sbi, segno);
2645 int entries = SIT_VBLOCK_MAP_SIZE / sizeof(unsigned long);
2646 unsigned long *target_map = SIT_I(sbi)->tmp_map;
2647 unsigned long *ckpt_map = (unsigned long *)se->ckpt_valid_map;
2648 unsigned long *cur_map = (unsigned long *)se->cur_valid_map;
2651 for (i = 0; i < entries; i++)
2652 target_map[i] = ckpt_map[i] | cur_map[i];
2654 return __find_rev_next_zero_bit(target_map, sbi->blocks_per_seg, start);
2658 * If a segment is written by LFS manner, next block offset is just obtained
2659 * by increasing the current block offset. However, if a segment is written by
2660 * SSR manner, next block offset obtained by calling __next_free_blkoff
2662 static void __refresh_next_blkoff(struct f2fs_sb_info *sbi,
2663 struct curseg_info *seg)
2665 if (seg->alloc_type == SSR)
2667 __next_free_blkoff(sbi, seg->segno,
2668 seg->next_blkoff + 1);
2673 bool f2fs_segment_has_free_slot(struct f2fs_sb_info *sbi, int segno)
2675 return __next_free_blkoff(sbi, segno, 0) < sbi->blocks_per_seg;
2679 * This function always allocates a used segment(from dirty seglist) by SSR
2680 * manner, so it should recover the existing segment information of valid blocks
2682 static void change_curseg(struct f2fs_sb_info *sbi, int type, bool flush)
2684 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
2685 struct curseg_info *curseg = CURSEG_I(sbi, type);
2686 unsigned int new_segno = curseg->next_segno;
2687 struct f2fs_summary_block *sum_node;
2688 struct page *sum_page;
2691 write_sum_page(sbi, curseg->sum_blk,
2692 GET_SUM_BLOCK(sbi, curseg->segno));
2694 __set_test_and_inuse(sbi, new_segno);
2696 mutex_lock(&dirty_i->seglist_lock);
2697 __remove_dirty_segment(sbi, new_segno, PRE);
2698 __remove_dirty_segment(sbi, new_segno, DIRTY);
2699 mutex_unlock(&dirty_i->seglist_lock);
2701 reset_curseg(sbi, type, 1);
2702 curseg->alloc_type = SSR;
2703 curseg->next_blkoff = __next_free_blkoff(sbi, curseg->segno, 0);
2705 sum_page = f2fs_get_sum_page(sbi, new_segno);
2706 if (IS_ERR(sum_page)) {
2707 /* GC won't be able to use stale summary pages by cp_error */
2708 memset(curseg->sum_blk, 0, SUM_ENTRY_SIZE);
2711 sum_node = (struct f2fs_summary_block *)page_address(sum_page);
2712 memcpy(curseg->sum_blk, sum_node, SUM_ENTRY_SIZE);
2713 f2fs_put_page(sum_page, 1);
2716 static int get_ssr_segment(struct f2fs_sb_info *sbi, int type,
2717 int alloc_mode, unsigned long long age);
2719 static void get_atssr_segment(struct f2fs_sb_info *sbi, int type,
2720 int target_type, int alloc_mode,
2721 unsigned long long age)
2723 struct curseg_info *curseg = CURSEG_I(sbi, type);
2725 curseg->seg_type = target_type;
2727 if (get_ssr_segment(sbi, type, alloc_mode, age)) {
2728 struct seg_entry *se = get_seg_entry(sbi, curseg->next_segno);
2730 curseg->seg_type = se->type;
2731 change_curseg(sbi, type, true);
2733 /* allocate cold segment by default */
2734 curseg->seg_type = CURSEG_COLD_DATA;
2735 new_curseg(sbi, type, true);
2737 stat_inc_seg_type(sbi, curseg);
2740 static void __f2fs_init_atgc_curseg(struct f2fs_sb_info *sbi)
2742 struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_ALL_DATA_ATGC);
2744 if (!sbi->am.atgc_enabled)
2747 down_read(&SM_I(sbi)->curseg_lock);
2749 mutex_lock(&curseg->curseg_mutex);
2750 down_write(&SIT_I(sbi)->sentry_lock);
2752 get_atssr_segment(sbi, CURSEG_ALL_DATA_ATGC, CURSEG_COLD_DATA, SSR, 0);
2754 up_write(&SIT_I(sbi)->sentry_lock);
2755 mutex_unlock(&curseg->curseg_mutex);
2757 up_read(&SM_I(sbi)->curseg_lock);
2760 void f2fs_init_inmem_curseg(struct f2fs_sb_info *sbi)
2762 __f2fs_init_atgc_curseg(sbi);
2765 static void __f2fs_save_inmem_curseg(struct f2fs_sb_info *sbi, int type)
2767 struct curseg_info *curseg = CURSEG_I(sbi, type);
2769 mutex_lock(&curseg->curseg_mutex);
2770 if (!curseg->inited)
2773 if (get_valid_blocks(sbi, curseg->segno, false)) {
2774 write_sum_page(sbi, curseg->sum_blk,
2775 GET_SUM_BLOCK(sbi, curseg->segno));
2777 mutex_lock(&DIRTY_I(sbi)->seglist_lock);
2778 __set_test_and_free(sbi, curseg->segno, true);
2779 mutex_unlock(&DIRTY_I(sbi)->seglist_lock);
2782 mutex_unlock(&curseg->curseg_mutex);
2785 void f2fs_save_inmem_curseg(struct f2fs_sb_info *sbi)
2787 __f2fs_save_inmem_curseg(sbi, CURSEG_COLD_DATA_PINNED);
2789 if (sbi->am.atgc_enabled)
2790 __f2fs_save_inmem_curseg(sbi, CURSEG_ALL_DATA_ATGC);
2793 static void __f2fs_restore_inmem_curseg(struct f2fs_sb_info *sbi, int type)
2795 struct curseg_info *curseg = CURSEG_I(sbi, type);
2797 mutex_lock(&curseg->curseg_mutex);
2798 if (!curseg->inited)
2800 if (get_valid_blocks(sbi, curseg->segno, false))
2803 mutex_lock(&DIRTY_I(sbi)->seglist_lock);
2804 __set_test_and_inuse(sbi, curseg->segno);
2805 mutex_unlock(&DIRTY_I(sbi)->seglist_lock);
2807 mutex_unlock(&curseg->curseg_mutex);
2810 void f2fs_restore_inmem_curseg(struct f2fs_sb_info *sbi)
2812 __f2fs_restore_inmem_curseg(sbi, CURSEG_COLD_DATA_PINNED);
2814 if (sbi->am.atgc_enabled)
2815 __f2fs_restore_inmem_curseg(sbi, CURSEG_ALL_DATA_ATGC);
2818 static int get_ssr_segment(struct f2fs_sb_info *sbi, int type,
2819 int alloc_mode, unsigned long long age)
2821 struct curseg_info *curseg = CURSEG_I(sbi, type);
2822 const struct victim_selection *v_ops = DIRTY_I(sbi)->v_ops;
2823 unsigned segno = NULL_SEGNO;
2824 unsigned short seg_type = curseg->seg_type;
2826 bool reversed = false;
2828 sanity_check_seg_type(sbi, seg_type);
2830 /* f2fs_need_SSR() already forces to do this */
2831 if (!v_ops->get_victim(sbi, &segno, BG_GC, seg_type, alloc_mode, age)) {
2832 curseg->next_segno = segno;
2836 /* For node segments, let's do SSR more intensively */
2837 if (IS_NODESEG(seg_type)) {
2838 if (seg_type >= CURSEG_WARM_NODE) {
2840 i = CURSEG_COLD_NODE;
2842 i = CURSEG_HOT_NODE;
2844 cnt = NR_CURSEG_NODE_TYPE;
2846 if (seg_type >= CURSEG_WARM_DATA) {
2848 i = CURSEG_COLD_DATA;
2850 i = CURSEG_HOT_DATA;
2852 cnt = NR_CURSEG_DATA_TYPE;
2855 for (; cnt-- > 0; reversed ? i-- : i++) {
2858 if (!v_ops->get_victim(sbi, &segno, BG_GC, i, alloc_mode, age)) {
2859 curseg->next_segno = segno;
2864 /* find valid_blocks=0 in dirty list */
2865 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
2866 segno = get_free_segment(sbi);
2867 if (segno != NULL_SEGNO) {
2868 curseg->next_segno = segno;
2876 * flush out current segment and replace it with new segment
2877 * This function should be returned with success, otherwise BUG
2879 static void allocate_segment_by_default(struct f2fs_sb_info *sbi,
2880 int type, bool force)
2882 struct curseg_info *curseg = CURSEG_I(sbi, type);
2885 new_curseg(sbi, type, true);
2886 else if (!is_set_ckpt_flags(sbi, CP_CRC_RECOVERY_FLAG) &&
2887 curseg->seg_type == CURSEG_WARM_NODE)
2888 new_curseg(sbi, type, false);
2889 else if (curseg->alloc_type == LFS &&
2890 is_next_segment_free(sbi, curseg, type) &&
2891 likely(!is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
2892 new_curseg(sbi, type, false);
2893 else if (f2fs_need_SSR(sbi) &&
2894 get_ssr_segment(sbi, type, SSR, 0))
2895 change_curseg(sbi, type, true);
2897 new_curseg(sbi, type, false);
2899 stat_inc_seg_type(sbi, curseg);
2902 void f2fs_allocate_segment_for_resize(struct f2fs_sb_info *sbi, int type,
2903 unsigned int start, unsigned int end)
2905 struct curseg_info *curseg = CURSEG_I(sbi, type);
2908 down_read(&SM_I(sbi)->curseg_lock);
2909 mutex_lock(&curseg->curseg_mutex);
2910 down_write(&SIT_I(sbi)->sentry_lock);
2912 segno = CURSEG_I(sbi, type)->segno;
2913 if (segno < start || segno > end)
2916 if (f2fs_need_SSR(sbi) && get_ssr_segment(sbi, type, SSR, 0))
2917 change_curseg(sbi, type, true);
2919 new_curseg(sbi, type, true);
2921 stat_inc_seg_type(sbi, curseg);
2923 locate_dirty_segment(sbi, segno);
2925 up_write(&SIT_I(sbi)->sentry_lock);
2927 if (segno != curseg->segno)
2928 f2fs_notice(sbi, "For resize: curseg of type %d: %u ==> %u",
2929 type, segno, curseg->segno);
2931 mutex_unlock(&curseg->curseg_mutex);
2932 up_read(&SM_I(sbi)->curseg_lock);
2935 static void __allocate_new_segment(struct f2fs_sb_info *sbi, int type,
2936 bool new_sec, bool force)
2938 struct curseg_info *curseg = CURSEG_I(sbi, type);
2939 unsigned int old_segno;
2941 if (!curseg->inited)
2944 if (force || curseg->next_blkoff ||
2945 get_valid_blocks(sbi, curseg->segno, new_sec))
2948 if (!get_ckpt_valid_blocks(sbi, curseg->segno, new_sec))
2951 old_segno = curseg->segno;
2952 SIT_I(sbi)->s_ops->allocate_segment(sbi, type, true);
2953 locate_dirty_segment(sbi, old_segno);
2956 static void __allocate_new_section(struct f2fs_sb_info *sbi,
2957 int type, bool force)
2959 __allocate_new_segment(sbi, type, true, force);
2962 void f2fs_allocate_new_section(struct f2fs_sb_info *sbi, int type, bool force)
2964 down_read(&SM_I(sbi)->curseg_lock);
2965 down_write(&SIT_I(sbi)->sentry_lock);
2966 __allocate_new_section(sbi, type, force);
2967 up_write(&SIT_I(sbi)->sentry_lock);
2968 up_read(&SM_I(sbi)->curseg_lock);
2971 void f2fs_allocate_new_segments(struct f2fs_sb_info *sbi)
2975 down_read(&SM_I(sbi)->curseg_lock);
2976 down_write(&SIT_I(sbi)->sentry_lock);
2977 for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++)
2978 __allocate_new_segment(sbi, i, false, false);
2979 up_write(&SIT_I(sbi)->sentry_lock);
2980 up_read(&SM_I(sbi)->curseg_lock);
2983 static const struct segment_allocation default_salloc_ops = {
2984 .allocate_segment = allocate_segment_by_default,
2987 bool f2fs_exist_trim_candidates(struct f2fs_sb_info *sbi,
2988 struct cp_control *cpc)
2990 __u64 trim_start = cpc->trim_start;
2991 bool has_candidate = false;
2993 down_write(&SIT_I(sbi)->sentry_lock);
2994 for (; cpc->trim_start <= cpc->trim_end; cpc->trim_start++) {
2995 if (add_discard_addrs(sbi, cpc, true)) {
2996 has_candidate = true;
3000 up_write(&SIT_I(sbi)->sentry_lock);
3002 cpc->trim_start = trim_start;
3003 return has_candidate;
3006 static unsigned int __issue_discard_cmd_range(struct f2fs_sb_info *sbi,
3007 struct discard_policy *dpolicy,
3008 unsigned int start, unsigned int end)
3010 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
3011 struct discard_cmd *prev_dc = NULL, *next_dc = NULL;
3012 struct rb_node **insert_p = NULL, *insert_parent = NULL;
3013 struct discard_cmd *dc;
3014 struct blk_plug plug;
3016 unsigned int trimmed = 0;
3021 mutex_lock(&dcc->cmd_lock);
3022 if (unlikely(dcc->rbtree_check))
3023 f2fs_bug_on(sbi, !f2fs_check_rb_tree_consistence(sbi,
3024 &dcc->root, false));
3026 dc = (struct discard_cmd *)f2fs_lookup_rb_tree_ret(&dcc->root,
3028 (struct rb_entry **)&prev_dc,
3029 (struct rb_entry **)&next_dc,
3030 &insert_p, &insert_parent, true, NULL);
3034 blk_start_plug(&plug);
3036 while (dc && dc->lstart <= end) {
3037 struct rb_node *node;
3040 if (dc->len < dpolicy->granularity)
3043 if (dc->state != D_PREP) {
3044 list_move_tail(&dc->list, &dcc->fstrim_list);
3048 err = __submit_discard_cmd(sbi, dpolicy, dc, &issued);
3050 if (issued >= dpolicy->max_requests) {
3051 start = dc->lstart + dc->len;
3054 __remove_discard_cmd(sbi, dc);
3056 blk_finish_plug(&plug);
3057 mutex_unlock(&dcc->cmd_lock);
3058 trimmed += __wait_all_discard_cmd(sbi, NULL);
3059 congestion_wait(BLK_RW_ASYNC, DEFAULT_IO_TIMEOUT);
3063 node = rb_next(&dc->rb_node);
3065 __remove_discard_cmd(sbi, dc);
3066 dc = rb_entry_safe(node, struct discard_cmd, rb_node);
3068 if (fatal_signal_pending(current))
3072 blk_finish_plug(&plug);
3073 mutex_unlock(&dcc->cmd_lock);
3078 int f2fs_trim_fs(struct f2fs_sb_info *sbi, struct fstrim_range *range)
3080 __u64 start = F2FS_BYTES_TO_BLK(range->start);
3081 __u64 end = start + F2FS_BYTES_TO_BLK(range->len) - 1;
3082 unsigned int start_segno, end_segno;
3083 block_t start_block, end_block;
3084 struct cp_control cpc;
3085 struct discard_policy dpolicy;
3086 unsigned long long trimmed = 0;
3088 bool need_align = f2fs_lfs_mode(sbi) && __is_large_section(sbi);
3090 if (start >= MAX_BLKADDR(sbi) || range->len < sbi->blocksize)
3093 if (end < MAIN_BLKADDR(sbi))
3096 if (is_sbi_flag_set(sbi, SBI_NEED_FSCK)) {
3097 f2fs_warn(sbi, "Found FS corruption, run fsck to fix.");
3098 return -EFSCORRUPTED;
3101 /* start/end segment number in main_area */
3102 start_segno = (start <= MAIN_BLKADDR(sbi)) ? 0 : GET_SEGNO(sbi, start);
3103 end_segno = (end >= MAX_BLKADDR(sbi)) ? MAIN_SEGS(sbi) - 1 :
3104 GET_SEGNO(sbi, end);
3106 start_segno = rounddown(start_segno, sbi->segs_per_sec);
3107 end_segno = roundup(end_segno + 1, sbi->segs_per_sec) - 1;
3110 cpc.reason = CP_DISCARD;
3111 cpc.trim_minlen = max_t(__u64, 1, F2FS_BYTES_TO_BLK(range->minlen));
3112 cpc.trim_start = start_segno;
3113 cpc.trim_end = end_segno;
3115 if (sbi->discard_blks == 0)
3118 down_write(&sbi->gc_lock);
3119 err = f2fs_write_checkpoint(sbi, &cpc);
3120 up_write(&sbi->gc_lock);
3125 * We filed discard candidates, but actually we don't need to wait for
3126 * all of them, since they'll be issued in idle time along with runtime
3127 * discard option. User configuration looks like using runtime discard
3128 * or periodic fstrim instead of it.
3130 if (f2fs_realtime_discard_enable(sbi))
3133 start_block = START_BLOCK(sbi, start_segno);
3134 end_block = START_BLOCK(sbi, end_segno + 1);
3136 __init_discard_policy(sbi, &dpolicy, DPOLICY_FSTRIM, cpc.trim_minlen);
3137 trimmed = __issue_discard_cmd_range(sbi, &dpolicy,
3138 start_block, end_block);
3140 trimmed += __wait_discard_cmd_range(sbi, &dpolicy,
3141 start_block, end_block);
3144 range->len = F2FS_BLK_TO_BYTES(trimmed);
3148 static bool __has_curseg_space(struct f2fs_sb_info *sbi,
3149 struct curseg_info *curseg)
3151 return curseg->next_blkoff < f2fs_usable_blks_in_seg(sbi,
3155 int f2fs_rw_hint_to_seg_type(enum rw_hint hint)
3158 case WRITE_LIFE_SHORT:
3159 return CURSEG_HOT_DATA;
3160 case WRITE_LIFE_EXTREME:
3161 return CURSEG_COLD_DATA;
3163 return CURSEG_WARM_DATA;
3167 /* This returns write hints for each segment type. This hints will be
3168 * passed down to block layer. There are mapping tables which depend on
3169 * the mount option 'whint_mode'.
3171 * 1) whint_mode=off. F2FS only passes down WRITE_LIFE_NOT_SET.
3173 * 2) whint_mode=user-based. F2FS tries to pass down hints given by users.
3177 * META WRITE_LIFE_NOT_SET
3181 * ioctl(COLD) COLD_DATA WRITE_LIFE_EXTREME
3182 * extension list " "
3185 * WRITE_LIFE_EXTREME COLD_DATA WRITE_LIFE_EXTREME
3186 * WRITE_LIFE_SHORT HOT_DATA WRITE_LIFE_SHORT
3187 * WRITE_LIFE_NOT_SET WARM_DATA WRITE_LIFE_NOT_SET
3188 * WRITE_LIFE_NONE " "
3189 * WRITE_LIFE_MEDIUM " "
3190 * WRITE_LIFE_LONG " "
3193 * WRITE_LIFE_EXTREME COLD_DATA WRITE_LIFE_EXTREME
3194 * WRITE_LIFE_SHORT HOT_DATA WRITE_LIFE_SHORT
3195 * WRITE_LIFE_NOT_SET WARM_DATA WRITE_LIFE_NOT_SET
3196 * WRITE_LIFE_NONE " WRITE_LIFE_NONE
3197 * WRITE_LIFE_MEDIUM " WRITE_LIFE_MEDIUM
3198 * WRITE_LIFE_LONG " WRITE_LIFE_LONG
3200 * 3) whint_mode=fs-based. F2FS passes down hints with its policy.
3204 * META WRITE_LIFE_MEDIUM;
3205 * HOT_NODE WRITE_LIFE_NOT_SET
3207 * COLD_NODE WRITE_LIFE_NONE
3208 * ioctl(COLD) COLD_DATA WRITE_LIFE_EXTREME
3209 * extension list " "
3212 * WRITE_LIFE_EXTREME COLD_DATA WRITE_LIFE_EXTREME
3213 * WRITE_LIFE_SHORT HOT_DATA WRITE_LIFE_SHORT
3214 * WRITE_LIFE_NOT_SET WARM_DATA WRITE_LIFE_LONG
3215 * WRITE_LIFE_NONE " "
3216 * WRITE_LIFE_MEDIUM " "
3217 * WRITE_LIFE_LONG " "
3220 * WRITE_LIFE_EXTREME COLD_DATA WRITE_LIFE_EXTREME
3221 * WRITE_LIFE_SHORT HOT_DATA WRITE_LIFE_SHORT
3222 * WRITE_LIFE_NOT_SET WARM_DATA WRITE_LIFE_NOT_SET
3223 * WRITE_LIFE_NONE " WRITE_LIFE_NONE
3224 * WRITE_LIFE_MEDIUM " WRITE_LIFE_MEDIUM
3225 * WRITE_LIFE_LONG " WRITE_LIFE_LONG
3228 enum rw_hint f2fs_io_type_to_rw_hint(struct f2fs_sb_info *sbi,
3229 enum page_type type, enum temp_type temp)
3231 if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_USER) {
3234 return WRITE_LIFE_NOT_SET;
3235 else if (temp == HOT)
3236 return WRITE_LIFE_SHORT;
3237 else if (temp == COLD)
3238 return WRITE_LIFE_EXTREME;
3240 return WRITE_LIFE_NOT_SET;
3242 } else if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_FS) {
3245 return WRITE_LIFE_LONG;
3246 else if (temp == HOT)
3247 return WRITE_LIFE_SHORT;
3248 else if (temp == COLD)
3249 return WRITE_LIFE_EXTREME;
3250 } else if (type == NODE) {
3251 if (temp == WARM || temp == HOT)
3252 return WRITE_LIFE_NOT_SET;
3253 else if (temp == COLD)
3254 return WRITE_LIFE_NONE;
3255 } else if (type == META) {
3256 return WRITE_LIFE_MEDIUM;
3259 return WRITE_LIFE_NOT_SET;
3262 static int __get_segment_type_2(struct f2fs_io_info *fio)
3264 if (fio->type == DATA)
3265 return CURSEG_HOT_DATA;
3267 return CURSEG_HOT_NODE;
3270 static int __get_segment_type_4(struct f2fs_io_info *fio)
3272 if (fio->type == DATA) {
3273 struct inode *inode = fio->page->mapping->host;
3275 if (S_ISDIR(inode->i_mode))
3276 return CURSEG_HOT_DATA;
3278 return CURSEG_COLD_DATA;
3280 if (IS_DNODE(fio->page) && is_cold_node(fio->page))
3281 return CURSEG_WARM_NODE;
3283 return CURSEG_COLD_NODE;
3287 static int __get_segment_type_6(struct f2fs_io_info *fio)
3289 if (fio->type == DATA) {
3290 struct inode *inode = fio->page->mapping->host;
3292 if (is_cold_data(fio->page)) {
3293 if (fio->sbi->am.atgc_enabled &&
3294 (fio->io_type == FS_DATA_IO) &&
3295 (fio->sbi->gc_mode != GC_URGENT_HIGH))
3296 return CURSEG_ALL_DATA_ATGC;
3298 return CURSEG_COLD_DATA;
3300 if (file_is_cold(inode) || f2fs_need_compress_data(inode))
3301 return CURSEG_COLD_DATA;
3302 if (file_is_hot(inode) ||
3303 is_inode_flag_set(inode, FI_HOT_DATA) ||
3304 f2fs_is_atomic_file(inode) ||
3305 f2fs_is_volatile_file(inode))
3306 return CURSEG_HOT_DATA;
3307 return f2fs_rw_hint_to_seg_type(inode->i_write_hint);
3309 if (IS_DNODE(fio->page))
3310 return is_cold_node(fio->page) ? CURSEG_WARM_NODE :
3312 return CURSEG_COLD_NODE;
3316 static int __get_segment_type(struct f2fs_io_info *fio)
3320 switch (F2FS_OPTION(fio->sbi).active_logs) {
3322 type = __get_segment_type_2(fio);
3325 type = __get_segment_type_4(fio);
3328 type = __get_segment_type_6(fio);
3331 f2fs_bug_on(fio->sbi, true);
3336 else if (IS_WARM(type))
3343 void f2fs_allocate_data_block(struct f2fs_sb_info *sbi, struct page *page,
3344 block_t old_blkaddr, block_t *new_blkaddr,
3345 struct f2fs_summary *sum, int type,
3346 struct f2fs_io_info *fio)
3348 struct sit_info *sit_i = SIT_I(sbi);
3349 struct curseg_info *curseg = CURSEG_I(sbi, type);
3350 unsigned long long old_mtime;
3351 bool from_gc = (type == CURSEG_ALL_DATA_ATGC);
3352 struct seg_entry *se = NULL;
3354 down_read(&SM_I(sbi)->curseg_lock);
3356 mutex_lock(&curseg->curseg_mutex);
3357 down_write(&sit_i->sentry_lock);
3360 f2fs_bug_on(sbi, GET_SEGNO(sbi, old_blkaddr) == NULL_SEGNO);
3361 se = get_seg_entry(sbi, GET_SEGNO(sbi, old_blkaddr));
3362 sanity_check_seg_type(sbi, se->type);
3363 f2fs_bug_on(sbi, IS_NODESEG(se->type));
3365 *new_blkaddr = NEXT_FREE_BLKADDR(sbi, curseg);
3367 f2fs_bug_on(sbi, curseg->next_blkoff >= sbi->blocks_per_seg);
3369 f2fs_wait_discard_bio(sbi, *new_blkaddr);
3372 * __add_sum_entry should be resided under the curseg_mutex
3373 * because, this function updates a summary entry in the
3374 * current summary block.
3376 __add_sum_entry(sbi, type, sum);
3378 __refresh_next_blkoff(sbi, curseg);
3380 stat_inc_block_count(sbi, curseg);
3383 old_mtime = get_segment_mtime(sbi, old_blkaddr);
3385 update_segment_mtime(sbi, old_blkaddr, 0);
3388 update_segment_mtime(sbi, *new_blkaddr, old_mtime);
3391 * SIT information should be updated before segment allocation,
3392 * since SSR needs latest valid block information.
3394 update_sit_entry(sbi, *new_blkaddr, 1);
3395 if (GET_SEGNO(sbi, old_blkaddr) != NULL_SEGNO)
3396 update_sit_entry(sbi, old_blkaddr, -1);
3398 if (!__has_curseg_space(sbi, curseg)) {
3400 get_atssr_segment(sbi, type, se->type,
3403 sit_i->s_ops->allocate_segment(sbi, type, false);
3406 * segment dirty status should be updated after segment allocation,
3407 * so we just need to update status only one time after previous
3408 * segment being closed.
3410 locate_dirty_segment(sbi, GET_SEGNO(sbi, old_blkaddr));
3411 locate_dirty_segment(sbi, GET_SEGNO(sbi, *new_blkaddr));
3413 up_write(&sit_i->sentry_lock);
3415 if (page && IS_NODESEG(type)) {
3416 fill_node_footer_blkaddr(page, NEXT_FREE_BLKADDR(sbi, curseg));
3418 f2fs_inode_chksum_set(sbi, page);
3422 struct f2fs_bio_info *io;
3424 if (F2FS_IO_ALIGNED(sbi))
3427 INIT_LIST_HEAD(&fio->list);
3428 fio->in_list = true;
3429 io = sbi->write_io[fio->type] + fio->temp;
3430 spin_lock(&io->io_lock);
3431 list_add_tail(&fio->list, &io->io_list);
3432 spin_unlock(&io->io_lock);
3435 mutex_unlock(&curseg->curseg_mutex);
3437 up_read(&SM_I(sbi)->curseg_lock);
3440 static void update_device_state(struct f2fs_io_info *fio)
3442 struct f2fs_sb_info *sbi = fio->sbi;
3443 unsigned int devidx;
3445 if (!f2fs_is_multi_device(sbi))
3448 devidx = f2fs_target_device_index(sbi, fio->new_blkaddr);
3450 /* update device state for fsync */
3451 f2fs_set_dirty_device(sbi, fio->ino, devidx, FLUSH_INO);
3453 /* update device state for checkpoint */
3454 if (!f2fs_test_bit(devidx, (char *)&sbi->dirty_device)) {
3455 spin_lock(&sbi->dev_lock);
3456 f2fs_set_bit(devidx, (char *)&sbi->dirty_device);
3457 spin_unlock(&sbi->dev_lock);
3461 static void do_write_page(struct f2fs_summary *sum, struct f2fs_io_info *fio)
3463 int type = __get_segment_type(fio);
3464 bool keep_order = (f2fs_lfs_mode(fio->sbi) && type == CURSEG_COLD_DATA);
3467 down_read(&fio->sbi->io_order_lock);
3469 f2fs_allocate_data_block(fio->sbi, fio->page, fio->old_blkaddr,
3470 &fio->new_blkaddr, sum, type, fio);
3471 if (GET_SEGNO(fio->sbi, fio->old_blkaddr) != NULL_SEGNO)
3472 invalidate_mapping_pages(META_MAPPING(fio->sbi),
3473 fio->old_blkaddr, fio->old_blkaddr);
3475 /* writeout dirty page into bdev */
3476 f2fs_submit_page_write(fio);
3478 fio->old_blkaddr = fio->new_blkaddr;
3482 update_device_state(fio);
3485 up_read(&fio->sbi->io_order_lock);
3488 void f2fs_do_write_meta_page(struct f2fs_sb_info *sbi, struct page *page,
3489 enum iostat_type io_type)
3491 struct f2fs_io_info fio = {
3496 .op_flags = REQ_SYNC | REQ_META | REQ_PRIO,
3497 .old_blkaddr = page->index,
3498 .new_blkaddr = page->index,
3500 .encrypted_page = NULL,
3504 if (unlikely(page->index >= MAIN_BLKADDR(sbi)))
3505 fio.op_flags &= ~REQ_META;
3507 set_page_writeback(page);
3508 ClearPageError(page);
3509 f2fs_submit_page_write(&fio);
3511 stat_inc_meta_count(sbi, page->index);
3512 f2fs_update_iostat(sbi, io_type, F2FS_BLKSIZE);
3515 void f2fs_do_write_node_page(unsigned int nid, struct f2fs_io_info *fio)
3517 struct f2fs_summary sum;
3519 set_summary(&sum, nid, 0, 0);
3520 do_write_page(&sum, fio);
3522 f2fs_update_iostat(fio->sbi, fio->io_type, F2FS_BLKSIZE);
3525 void f2fs_outplace_write_data(struct dnode_of_data *dn,
3526 struct f2fs_io_info *fio)
3528 struct f2fs_sb_info *sbi = fio->sbi;
3529 struct f2fs_summary sum;
3531 f2fs_bug_on(sbi, dn->data_blkaddr == NULL_ADDR);
3532 set_summary(&sum, dn->nid, dn->ofs_in_node, fio->version);
3533 do_write_page(&sum, fio);
3534 f2fs_update_data_blkaddr(dn, fio->new_blkaddr);
3536 f2fs_update_iostat(sbi, fio->io_type, F2FS_BLKSIZE);
3539 int f2fs_inplace_write_data(struct f2fs_io_info *fio)
3542 struct f2fs_sb_info *sbi = fio->sbi;
3545 fio->new_blkaddr = fio->old_blkaddr;
3546 /* i/o temperature is needed for passing down write hints */
3547 __get_segment_type(fio);
3549 segno = GET_SEGNO(sbi, fio->new_blkaddr);
3551 if (!IS_DATASEG(get_seg_entry(sbi, segno)->type)) {
3552 set_sbi_flag(sbi, SBI_NEED_FSCK);
3553 f2fs_warn(sbi, "%s: incorrect segment(%u) type, run fsck to fix.",
3555 err = -EFSCORRUPTED;
3559 if (is_sbi_flag_set(sbi, SBI_NEED_FSCK) || f2fs_cp_error(sbi)) {
3564 stat_inc_inplace_blocks(fio->sbi);
3566 if (fio->bio && !(SM_I(sbi)->ipu_policy & (1 << F2FS_IPU_NOCACHE)))
3567 err = f2fs_merge_page_bio(fio);
3569 err = f2fs_submit_page_bio(fio);
3571 update_device_state(fio);
3572 f2fs_update_iostat(fio->sbi, fio->io_type, F2FS_BLKSIZE);
3577 if (fio->bio && *(fio->bio)) {
3578 struct bio *bio = *(fio->bio);
3580 bio->bi_status = BLK_STS_IOERR;
3587 static inline int __f2fs_get_curseg(struct f2fs_sb_info *sbi,
3592 for (i = CURSEG_HOT_DATA; i < NO_CHECK_TYPE; i++) {
3593 if (CURSEG_I(sbi, i)->segno == segno)
3599 void f2fs_do_replace_block(struct f2fs_sb_info *sbi, struct f2fs_summary *sum,
3600 block_t old_blkaddr, block_t new_blkaddr,
3601 bool recover_curseg, bool recover_newaddr,
3604 struct sit_info *sit_i = SIT_I(sbi);
3605 struct curseg_info *curseg;
3606 unsigned int segno, old_cursegno;
3607 struct seg_entry *se;
3609 unsigned short old_blkoff;
3610 unsigned char old_alloc_type;
3612 segno = GET_SEGNO(sbi, new_blkaddr);
3613 se = get_seg_entry(sbi, segno);
3616 down_write(&SM_I(sbi)->curseg_lock);
3618 if (!recover_curseg) {
3619 /* for recovery flow */
3620 if (se->valid_blocks == 0 && !IS_CURSEG(sbi, segno)) {
3621 if (old_blkaddr == NULL_ADDR)
3622 type = CURSEG_COLD_DATA;
3624 type = CURSEG_WARM_DATA;
3627 if (IS_CURSEG(sbi, segno)) {
3628 /* se->type is volatile as SSR allocation */
3629 type = __f2fs_get_curseg(sbi, segno);
3630 f2fs_bug_on(sbi, type == NO_CHECK_TYPE);
3632 type = CURSEG_WARM_DATA;
3636 f2fs_bug_on(sbi, !IS_DATASEG(type));
3637 curseg = CURSEG_I(sbi, type);
3639 mutex_lock(&curseg->curseg_mutex);
3640 down_write(&sit_i->sentry_lock);
3642 old_cursegno = curseg->segno;
3643 old_blkoff = curseg->next_blkoff;
3644 old_alloc_type = curseg->alloc_type;
3646 /* change the current segment */
3647 if (segno != curseg->segno) {
3648 curseg->next_segno = segno;
3649 change_curseg(sbi, type, true);
3652 curseg->next_blkoff = GET_BLKOFF_FROM_SEG0(sbi, new_blkaddr);
3653 __add_sum_entry(sbi, type, sum);
3655 if (!recover_curseg || recover_newaddr) {
3657 update_segment_mtime(sbi, new_blkaddr, 0);
3658 update_sit_entry(sbi, new_blkaddr, 1);
3660 if (GET_SEGNO(sbi, old_blkaddr) != NULL_SEGNO) {
3661 invalidate_mapping_pages(META_MAPPING(sbi),
3662 old_blkaddr, old_blkaddr);
3664 update_segment_mtime(sbi, old_blkaddr, 0);
3665 update_sit_entry(sbi, old_blkaddr, -1);
3668 locate_dirty_segment(sbi, GET_SEGNO(sbi, old_blkaddr));
3669 locate_dirty_segment(sbi, GET_SEGNO(sbi, new_blkaddr));
3671 locate_dirty_segment(sbi, old_cursegno);
3673 if (recover_curseg) {
3674 if (old_cursegno != curseg->segno) {
3675 curseg->next_segno = old_cursegno;
3676 change_curseg(sbi, type, true);
3678 curseg->next_blkoff = old_blkoff;
3679 curseg->alloc_type = old_alloc_type;
3682 up_write(&sit_i->sentry_lock);
3683 mutex_unlock(&curseg->curseg_mutex);
3684 up_write(&SM_I(sbi)->curseg_lock);
3687 void f2fs_replace_block(struct f2fs_sb_info *sbi, struct dnode_of_data *dn,
3688 block_t old_addr, block_t new_addr,
3689 unsigned char version, bool recover_curseg,
3690 bool recover_newaddr)
3692 struct f2fs_summary sum;
3694 set_summary(&sum, dn->nid, dn->ofs_in_node, version);
3696 f2fs_do_replace_block(sbi, &sum, old_addr, new_addr,
3697 recover_curseg, recover_newaddr, false);
3699 f2fs_update_data_blkaddr(dn, new_addr);
3702 void f2fs_wait_on_page_writeback(struct page *page,
3703 enum page_type type, bool ordered, bool locked)
3705 if (PageWriteback(page)) {
3706 struct f2fs_sb_info *sbi = F2FS_P_SB(page);
3708 /* submit cached LFS IO */
3709 f2fs_submit_merged_write_cond(sbi, NULL, page, 0, type);
3710 /* sbumit cached IPU IO */
3711 f2fs_submit_merged_ipu_write(sbi, NULL, page);
3713 wait_on_page_writeback(page);
3714 f2fs_bug_on(sbi, locked && PageWriteback(page));
3716 wait_for_stable_page(page);
3721 void f2fs_wait_on_block_writeback(struct inode *inode, block_t blkaddr)
3723 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3726 if (!f2fs_post_read_required(inode))
3729 if (!__is_valid_data_blkaddr(blkaddr))
3732 cpage = find_lock_page(META_MAPPING(sbi), blkaddr);
3734 f2fs_wait_on_page_writeback(cpage, DATA, true, true);
3735 f2fs_put_page(cpage, 1);
3739 void f2fs_wait_on_block_writeback_range(struct inode *inode, block_t blkaddr,
3744 for (i = 0; i < len; i++)
3745 f2fs_wait_on_block_writeback(inode, blkaddr + i);
3748 static int read_compacted_summaries(struct f2fs_sb_info *sbi)
3750 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
3751 struct curseg_info *seg_i;
3752 unsigned char *kaddr;
3757 start = start_sum_block(sbi);
3759 page = f2fs_get_meta_page(sbi, start++);
3761 return PTR_ERR(page);
3762 kaddr = (unsigned char *)page_address(page);
3764 /* Step 1: restore nat cache */
3765 seg_i = CURSEG_I(sbi, CURSEG_HOT_DATA);
3766 memcpy(seg_i->journal, kaddr, SUM_JOURNAL_SIZE);
3768 /* Step 2: restore sit cache */
3769 seg_i = CURSEG_I(sbi, CURSEG_COLD_DATA);
3770 memcpy(seg_i->journal, kaddr + SUM_JOURNAL_SIZE, SUM_JOURNAL_SIZE);
3771 offset = 2 * SUM_JOURNAL_SIZE;
3773 /* Step 3: restore summary entries */
3774 for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) {
3775 unsigned short blk_off;
3778 seg_i = CURSEG_I(sbi, i);
3779 segno = le32_to_cpu(ckpt->cur_data_segno[i]);
3780 blk_off = le16_to_cpu(ckpt->cur_data_blkoff[i]);
3781 seg_i->next_segno = segno;
3782 reset_curseg(sbi, i, 0);
3783 seg_i->alloc_type = ckpt->alloc_type[i];
3784 seg_i->next_blkoff = blk_off;
3786 if (seg_i->alloc_type == SSR)
3787 blk_off = sbi->blocks_per_seg;
3789 for (j = 0; j < blk_off; j++) {
3790 struct f2fs_summary *s;
3792 s = (struct f2fs_summary *)(kaddr + offset);
3793 seg_i->sum_blk->entries[j] = *s;
3794 offset += SUMMARY_SIZE;
3795 if (offset + SUMMARY_SIZE <= PAGE_SIZE -
3799 f2fs_put_page(page, 1);
3802 page = f2fs_get_meta_page(sbi, start++);
3804 return PTR_ERR(page);
3805 kaddr = (unsigned char *)page_address(page);
3809 f2fs_put_page(page, 1);
3813 static int read_normal_summaries(struct f2fs_sb_info *sbi, int type)
3815 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
3816 struct f2fs_summary_block *sum;
3817 struct curseg_info *curseg;
3819 unsigned short blk_off;
3820 unsigned int segno = 0;
3821 block_t blk_addr = 0;
3824 /* get segment number and block addr */
3825 if (IS_DATASEG(type)) {
3826 segno = le32_to_cpu(ckpt->cur_data_segno[type]);
3827 blk_off = le16_to_cpu(ckpt->cur_data_blkoff[type -
3829 if (__exist_node_summaries(sbi))
3830 blk_addr = sum_blk_addr(sbi, NR_CURSEG_PERSIST_TYPE, type);
3832 blk_addr = sum_blk_addr(sbi, NR_CURSEG_DATA_TYPE, type);
3834 segno = le32_to_cpu(ckpt->cur_node_segno[type -
3836 blk_off = le16_to_cpu(ckpt->cur_node_blkoff[type -
3838 if (__exist_node_summaries(sbi))
3839 blk_addr = sum_blk_addr(sbi, NR_CURSEG_NODE_TYPE,
3840 type - CURSEG_HOT_NODE);
3842 blk_addr = GET_SUM_BLOCK(sbi, segno);
3845 new = f2fs_get_meta_page(sbi, blk_addr);
3847 return PTR_ERR(new);
3848 sum = (struct f2fs_summary_block *)page_address(new);
3850 if (IS_NODESEG(type)) {
3851 if (__exist_node_summaries(sbi)) {
3852 struct f2fs_summary *ns = &sum->entries[0];
3855 for (i = 0; i < sbi->blocks_per_seg; i++, ns++) {
3857 ns->ofs_in_node = 0;
3860 err = f2fs_restore_node_summary(sbi, segno, sum);
3866 /* set uncompleted segment to curseg */
3867 curseg = CURSEG_I(sbi, type);
3868 mutex_lock(&curseg->curseg_mutex);
3870 /* update journal info */
3871 down_write(&curseg->journal_rwsem);
3872 memcpy(curseg->journal, &sum->journal, SUM_JOURNAL_SIZE);
3873 up_write(&curseg->journal_rwsem);
3875 memcpy(curseg->sum_blk->entries, sum->entries, SUM_ENTRY_SIZE);
3876 memcpy(&curseg->sum_blk->footer, &sum->footer, SUM_FOOTER_SIZE);
3877 curseg->next_segno = segno;
3878 reset_curseg(sbi, type, 0);
3879 curseg->alloc_type = ckpt->alloc_type[type];
3880 curseg->next_blkoff = blk_off;
3881 mutex_unlock(&curseg->curseg_mutex);
3883 f2fs_put_page(new, 1);
3887 static int restore_curseg_summaries(struct f2fs_sb_info *sbi)
3889 struct f2fs_journal *sit_j = CURSEG_I(sbi, CURSEG_COLD_DATA)->journal;
3890 struct f2fs_journal *nat_j = CURSEG_I(sbi, CURSEG_HOT_DATA)->journal;
3891 int type = CURSEG_HOT_DATA;
3894 if (is_set_ckpt_flags(sbi, CP_COMPACT_SUM_FLAG)) {
3895 int npages = f2fs_npages_for_summary_flush(sbi, true);
3898 f2fs_ra_meta_pages(sbi, start_sum_block(sbi), npages,
3901 /* restore for compacted data summary */
3902 err = read_compacted_summaries(sbi);
3905 type = CURSEG_HOT_NODE;
3908 if (__exist_node_summaries(sbi))
3909 f2fs_ra_meta_pages(sbi,
3910 sum_blk_addr(sbi, NR_CURSEG_PERSIST_TYPE, type),
3911 NR_CURSEG_PERSIST_TYPE - type, META_CP, true);
3913 for (; type <= CURSEG_COLD_NODE; type++) {
3914 err = read_normal_summaries(sbi, type);
3919 /* sanity check for summary blocks */
3920 if (nats_in_cursum(nat_j) > NAT_JOURNAL_ENTRIES ||
3921 sits_in_cursum(sit_j) > SIT_JOURNAL_ENTRIES) {
3922 f2fs_err(sbi, "invalid journal entries nats %u sits %u\n",
3923 nats_in_cursum(nat_j), sits_in_cursum(sit_j));
3930 static void write_compacted_summaries(struct f2fs_sb_info *sbi, block_t blkaddr)
3933 unsigned char *kaddr;
3934 struct f2fs_summary *summary;
3935 struct curseg_info *seg_i;
3936 int written_size = 0;
3939 page = f2fs_grab_meta_page(sbi, blkaddr++);
3940 kaddr = (unsigned char *)page_address(page);
3941 memset(kaddr, 0, PAGE_SIZE);
3943 /* Step 1: write nat cache */
3944 seg_i = CURSEG_I(sbi, CURSEG_HOT_DATA);
3945 memcpy(kaddr, seg_i->journal, SUM_JOURNAL_SIZE);
3946 written_size += SUM_JOURNAL_SIZE;
3948 /* Step 2: write sit cache */
3949 seg_i = CURSEG_I(sbi, CURSEG_COLD_DATA);
3950 memcpy(kaddr + written_size, seg_i->journal, SUM_JOURNAL_SIZE);
3951 written_size += SUM_JOURNAL_SIZE;
3953 /* Step 3: write summary entries */
3954 for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) {
3955 unsigned short blkoff;
3957 seg_i = CURSEG_I(sbi, i);
3958 if (sbi->ckpt->alloc_type[i] == SSR)
3959 blkoff = sbi->blocks_per_seg;
3961 blkoff = curseg_blkoff(sbi, i);
3963 for (j = 0; j < blkoff; j++) {
3965 page = f2fs_grab_meta_page(sbi, blkaddr++);
3966 kaddr = (unsigned char *)page_address(page);
3967 memset(kaddr, 0, PAGE_SIZE);
3970 summary = (struct f2fs_summary *)(kaddr + written_size);
3971 *summary = seg_i->sum_blk->entries[j];
3972 written_size += SUMMARY_SIZE;
3974 if (written_size + SUMMARY_SIZE <= PAGE_SIZE -
3978 set_page_dirty(page);
3979 f2fs_put_page(page, 1);
3984 set_page_dirty(page);
3985 f2fs_put_page(page, 1);
3989 static void write_normal_summaries(struct f2fs_sb_info *sbi,
3990 block_t blkaddr, int type)
3994 if (IS_DATASEG(type))
3995 end = type + NR_CURSEG_DATA_TYPE;
3997 end = type + NR_CURSEG_NODE_TYPE;
3999 for (i = type; i < end; i++)
4000 write_current_sum_page(sbi, i, blkaddr + (i - type));
4003 void f2fs_write_data_summaries(struct f2fs_sb_info *sbi, block_t start_blk)
4005 if (is_set_ckpt_flags(sbi, CP_COMPACT_SUM_FLAG))
4006 write_compacted_summaries(sbi, start_blk);
4008 write_normal_summaries(sbi, start_blk, CURSEG_HOT_DATA);
4011 void f2fs_write_node_summaries(struct f2fs_sb_info *sbi, block_t start_blk)
4013 write_normal_summaries(sbi, start_blk, CURSEG_HOT_NODE);
4016 int f2fs_lookup_journal_in_cursum(struct f2fs_journal *journal, int type,
4017 unsigned int val, int alloc)
4021 if (type == NAT_JOURNAL) {
4022 for (i = 0; i < nats_in_cursum(journal); i++) {
4023 if (le32_to_cpu(nid_in_journal(journal, i)) == val)
4026 if (alloc && __has_cursum_space(journal, 1, NAT_JOURNAL))
4027 return update_nats_in_cursum(journal, 1);
4028 } else if (type == SIT_JOURNAL) {
4029 for (i = 0; i < sits_in_cursum(journal); i++)
4030 if (le32_to_cpu(segno_in_journal(journal, i)) == val)
4032 if (alloc && __has_cursum_space(journal, 1, SIT_JOURNAL))
4033 return update_sits_in_cursum(journal, 1);
4038 static struct page *get_current_sit_page(struct f2fs_sb_info *sbi,
4041 return f2fs_get_meta_page(sbi, current_sit_addr(sbi, segno));
4044 static struct page *get_next_sit_page(struct f2fs_sb_info *sbi,
4047 struct sit_info *sit_i = SIT_I(sbi);
4049 pgoff_t src_off, dst_off;
4051 src_off = current_sit_addr(sbi, start);
4052 dst_off = next_sit_addr(sbi, src_off);
4054 page = f2fs_grab_meta_page(sbi, dst_off);
4055 seg_info_to_sit_page(sbi, page, start);
4057 set_page_dirty(page);
4058 set_to_next_sit(sit_i, start);
4063 static struct sit_entry_set *grab_sit_entry_set(void)
4065 struct sit_entry_set *ses =
4066 f2fs_kmem_cache_alloc(sit_entry_set_slab, GFP_NOFS);
4069 INIT_LIST_HEAD(&ses->set_list);
4073 static void release_sit_entry_set(struct sit_entry_set *ses)
4075 list_del(&ses->set_list);
4076 kmem_cache_free(sit_entry_set_slab, ses);
4079 static void adjust_sit_entry_set(struct sit_entry_set *ses,
4080 struct list_head *head)
4082 struct sit_entry_set *next = ses;
4084 if (list_is_last(&ses->set_list, head))
4087 list_for_each_entry_continue(next, head, set_list)
4088 if (ses->entry_cnt <= next->entry_cnt)
4091 list_move_tail(&ses->set_list, &next->set_list);
4094 static void add_sit_entry(unsigned int segno, struct list_head *head)
4096 struct sit_entry_set *ses;
4097 unsigned int start_segno = START_SEGNO(segno);
4099 list_for_each_entry(ses, head, set_list) {
4100 if (ses->start_segno == start_segno) {
4102 adjust_sit_entry_set(ses, head);
4107 ses = grab_sit_entry_set();
4109 ses->start_segno = start_segno;
4111 list_add(&ses->set_list, head);
4114 static void add_sits_in_set(struct f2fs_sb_info *sbi)
4116 struct f2fs_sm_info *sm_info = SM_I(sbi);
4117 struct list_head *set_list = &sm_info->sit_entry_set;
4118 unsigned long *bitmap = SIT_I(sbi)->dirty_sentries_bitmap;
4121 for_each_set_bit(segno, bitmap, MAIN_SEGS(sbi))
4122 add_sit_entry(segno, set_list);
4125 static void remove_sits_in_journal(struct f2fs_sb_info *sbi)
4127 struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA);
4128 struct f2fs_journal *journal = curseg->journal;
4131 down_write(&curseg->journal_rwsem);
4132 for (i = 0; i < sits_in_cursum(journal); i++) {
4136 segno = le32_to_cpu(segno_in_journal(journal, i));
4137 dirtied = __mark_sit_entry_dirty(sbi, segno);
4140 add_sit_entry(segno, &SM_I(sbi)->sit_entry_set);
4142 update_sits_in_cursum(journal, -i);
4143 up_write(&curseg->journal_rwsem);
4147 * CP calls this function, which flushes SIT entries including sit_journal,
4148 * and moves prefree segs to free segs.
4150 void f2fs_flush_sit_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc)
4152 struct sit_info *sit_i = SIT_I(sbi);
4153 unsigned long *bitmap = sit_i->dirty_sentries_bitmap;
4154 struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA);
4155 struct f2fs_journal *journal = curseg->journal;
4156 struct sit_entry_set *ses, *tmp;
4157 struct list_head *head = &SM_I(sbi)->sit_entry_set;
4158 bool to_journal = !is_sbi_flag_set(sbi, SBI_IS_RESIZEFS);
4159 struct seg_entry *se;
4161 down_write(&sit_i->sentry_lock);
4163 if (!sit_i->dirty_sentries)
4167 * add and account sit entries of dirty bitmap in sit entry
4170 add_sits_in_set(sbi);
4173 * if there are no enough space in journal to store dirty sit
4174 * entries, remove all entries from journal and add and account
4175 * them in sit entry set.
4177 if (!__has_cursum_space(journal, sit_i->dirty_sentries, SIT_JOURNAL) ||
4179 remove_sits_in_journal(sbi);
4182 * there are two steps to flush sit entries:
4183 * #1, flush sit entries to journal in current cold data summary block.
4184 * #2, flush sit entries to sit page.
4186 list_for_each_entry_safe(ses, tmp, head, set_list) {
4187 struct page *page = NULL;
4188 struct f2fs_sit_block *raw_sit = NULL;
4189 unsigned int start_segno = ses->start_segno;
4190 unsigned int end = min(start_segno + SIT_ENTRY_PER_BLOCK,
4191 (unsigned long)MAIN_SEGS(sbi));
4192 unsigned int segno = start_segno;
4195 !__has_cursum_space(journal, ses->entry_cnt, SIT_JOURNAL))
4199 down_write(&curseg->journal_rwsem);
4201 page = get_next_sit_page(sbi, start_segno);
4202 raw_sit = page_address(page);
4205 /* flush dirty sit entries in region of current sit set */
4206 for_each_set_bit_from(segno, bitmap, end) {
4207 int offset, sit_offset;
4209 se = get_seg_entry(sbi, segno);
4210 #ifdef CONFIG_F2FS_CHECK_FS
4211 if (memcmp(se->cur_valid_map, se->cur_valid_map_mir,
4212 SIT_VBLOCK_MAP_SIZE))
4213 f2fs_bug_on(sbi, 1);
4216 /* add discard candidates */
4217 if (!(cpc->reason & CP_DISCARD)) {
4218 cpc->trim_start = segno;
4219 add_discard_addrs(sbi, cpc, false);
4223 offset = f2fs_lookup_journal_in_cursum(journal,
4224 SIT_JOURNAL, segno, 1);
4225 f2fs_bug_on(sbi, offset < 0);
4226 segno_in_journal(journal, offset) =
4228 seg_info_to_raw_sit(se,
4229 &sit_in_journal(journal, offset));
4230 check_block_count(sbi, segno,
4231 &sit_in_journal(journal, offset));
4233 sit_offset = SIT_ENTRY_OFFSET(sit_i, segno);
4234 seg_info_to_raw_sit(se,
4235 &raw_sit->entries[sit_offset]);
4236 check_block_count(sbi, segno,
4237 &raw_sit->entries[sit_offset]);
4240 __clear_bit(segno, bitmap);
4241 sit_i->dirty_sentries--;
4246 up_write(&curseg->journal_rwsem);
4248 f2fs_put_page(page, 1);
4250 f2fs_bug_on(sbi, ses->entry_cnt);
4251 release_sit_entry_set(ses);
4254 f2fs_bug_on(sbi, !list_empty(head));
4255 f2fs_bug_on(sbi, sit_i->dirty_sentries);
4257 if (cpc->reason & CP_DISCARD) {
4258 __u64 trim_start = cpc->trim_start;
4260 for (; cpc->trim_start <= cpc->trim_end; cpc->trim_start++)
4261 add_discard_addrs(sbi, cpc, false);
4263 cpc->trim_start = trim_start;
4265 up_write(&sit_i->sentry_lock);
4267 set_prefree_as_free_segments(sbi);
4270 static int build_sit_info(struct f2fs_sb_info *sbi)
4272 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
4273 struct sit_info *sit_i;
4274 unsigned int sit_segs, start;
4275 char *src_bitmap, *bitmap;
4276 unsigned int bitmap_size, main_bitmap_size, sit_bitmap_size;
4278 /* allocate memory for SIT information */
4279 sit_i = f2fs_kzalloc(sbi, sizeof(struct sit_info), GFP_KERNEL);
4283 SM_I(sbi)->sit_info = sit_i;
4286 f2fs_kvzalloc(sbi, array_size(sizeof(struct seg_entry),
4289 if (!sit_i->sentries)
4292 main_bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi));
4293 sit_i->dirty_sentries_bitmap = f2fs_kvzalloc(sbi, main_bitmap_size,
4295 if (!sit_i->dirty_sentries_bitmap)
4298 #ifdef CONFIG_F2FS_CHECK_FS
4299 bitmap_size = MAIN_SEGS(sbi) * SIT_VBLOCK_MAP_SIZE * 4;
4301 bitmap_size = MAIN_SEGS(sbi) * SIT_VBLOCK_MAP_SIZE * 3;
4303 sit_i->bitmap = f2fs_kvzalloc(sbi, bitmap_size, GFP_KERNEL);
4307 bitmap = sit_i->bitmap;
4309 for (start = 0; start < MAIN_SEGS(sbi); start++) {
4310 sit_i->sentries[start].cur_valid_map = bitmap;
4311 bitmap += SIT_VBLOCK_MAP_SIZE;
4313 sit_i->sentries[start].ckpt_valid_map = bitmap;
4314 bitmap += SIT_VBLOCK_MAP_SIZE;
4316 #ifdef CONFIG_F2FS_CHECK_FS
4317 sit_i->sentries[start].cur_valid_map_mir = bitmap;
4318 bitmap += SIT_VBLOCK_MAP_SIZE;
4321 sit_i->sentries[start].discard_map = bitmap;
4322 bitmap += SIT_VBLOCK_MAP_SIZE;
4325 sit_i->tmp_map = f2fs_kzalloc(sbi, SIT_VBLOCK_MAP_SIZE, GFP_KERNEL);
4326 if (!sit_i->tmp_map)
4329 if (__is_large_section(sbi)) {
4330 sit_i->sec_entries =
4331 f2fs_kvzalloc(sbi, array_size(sizeof(struct sec_entry),
4334 if (!sit_i->sec_entries)
4338 /* get information related with SIT */
4339 sit_segs = le32_to_cpu(raw_super->segment_count_sit) >> 1;
4341 /* setup SIT bitmap from ckeckpoint pack */
4342 sit_bitmap_size = __bitmap_size(sbi, SIT_BITMAP);
4343 src_bitmap = __bitmap_ptr(sbi, SIT_BITMAP);
4345 sit_i->sit_bitmap = kmemdup(src_bitmap, sit_bitmap_size, GFP_KERNEL);
4346 if (!sit_i->sit_bitmap)
4349 #ifdef CONFIG_F2FS_CHECK_FS
4350 sit_i->sit_bitmap_mir = kmemdup(src_bitmap,
4351 sit_bitmap_size, GFP_KERNEL);
4352 if (!sit_i->sit_bitmap_mir)
4355 sit_i->invalid_segmap = f2fs_kvzalloc(sbi,
4356 main_bitmap_size, GFP_KERNEL);
4357 if (!sit_i->invalid_segmap)
4361 /* init SIT information */
4362 sit_i->s_ops = &default_salloc_ops;
4364 sit_i->sit_base_addr = le32_to_cpu(raw_super->sit_blkaddr);
4365 sit_i->sit_blocks = sit_segs << sbi->log_blocks_per_seg;
4366 sit_i->written_valid_blocks = 0;
4367 sit_i->bitmap_size = sit_bitmap_size;
4368 sit_i->dirty_sentries = 0;
4369 sit_i->sents_per_block = SIT_ENTRY_PER_BLOCK;
4370 sit_i->elapsed_time = le64_to_cpu(sbi->ckpt->elapsed_time);
4371 sit_i->mounted_time = ktime_get_boottime_seconds();
4372 init_rwsem(&sit_i->sentry_lock);
4376 static int build_free_segmap(struct f2fs_sb_info *sbi)
4378 struct free_segmap_info *free_i;
4379 unsigned int bitmap_size, sec_bitmap_size;
4381 /* allocate memory for free segmap information */
4382 free_i = f2fs_kzalloc(sbi, sizeof(struct free_segmap_info), GFP_KERNEL);
4386 SM_I(sbi)->free_info = free_i;
4388 bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi));
4389 free_i->free_segmap = f2fs_kvmalloc(sbi, bitmap_size, GFP_KERNEL);
4390 if (!free_i->free_segmap)
4393 sec_bitmap_size = f2fs_bitmap_size(MAIN_SECS(sbi));
4394 free_i->free_secmap = f2fs_kvmalloc(sbi, sec_bitmap_size, GFP_KERNEL);
4395 if (!free_i->free_secmap)
4398 /* set all segments as dirty temporarily */
4399 memset(free_i->free_segmap, 0xff, bitmap_size);
4400 memset(free_i->free_secmap, 0xff, sec_bitmap_size);
4402 /* init free segmap information */
4403 free_i->start_segno = GET_SEGNO_FROM_SEG0(sbi, MAIN_BLKADDR(sbi));
4404 free_i->free_segments = 0;
4405 free_i->free_sections = 0;
4406 spin_lock_init(&free_i->segmap_lock);
4410 static int build_curseg(struct f2fs_sb_info *sbi)
4412 struct curseg_info *array;
4415 array = f2fs_kzalloc(sbi, array_size(NR_CURSEG_TYPE,
4416 sizeof(*array)), GFP_KERNEL);
4420 SM_I(sbi)->curseg_array = array;
4422 for (i = 0; i < NO_CHECK_TYPE; i++) {
4423 mutex_init(&array[i].curseg_mutex);
4424 array[i].sum_blk = f2fs_kzalloc(sbi, PAGE_SIZE, GFP_KERNEL);
4425 if (!array[i].sum_blk)
4427 init_rwsem(&array[i].journal_rwsem);
4428 array[i].journal = f2fs_kzalloc(sbi,
4429 sizeof(struct f2fs_journal), GFP_KERNEL);
4430 if (!array[i].journal)
4432 if (i < NR_PERSISTENT_LOG)
4433 array[i].seg_type = CURSEG_HOT_DATA + i;
4434 else if (i == CURSEG_COLD_DATA_PINNED)
4435 array[i].seg_type = CURSEG_COLD_DATA;
4436 else if (i == CURSEG_ALL_DATA_ATGC)
4437 array[i].seg_type = CURSEG_COLD_DATA;
4438 array[i].segno = NULL_SEGNO;
4439 array[i].next_blkoff = 0;
4440 array[i].inited = false;
4442 return restore_curseg_summaries(sbi);
4445 static int build_sit_entries(struct f2fs_sb_info *sbi)
4447 struct sit_info *sit_i = SIT_I(sbi);
4448 struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA);
4449 struct f2fs_journal *journal = curseg->journal;
4450 struct seg_entry *se;
4451 struct f2fs_sit_entry sit;
4452 int sit_blk_cnt = SIT_BLK_CNT(sbi);
4453 unsigned int i, start, end;
4454 unsigned int readed, start_blk = 0;
4456 block_t total_node_blocks = 0;
4459 readed = f2fs_ra_meta_pages(sbi, start_blk, BIO_MAX_VECS,
4462 start = start_blk * sit_i->sents_per_block;
4463 end = (start_blk + readed) * sit_i->sents_per_block;
4465 for (; start < end && start < MAIN_SEGS(sbi); start++) {
4466 struct f2fs_sit_block *sit_blk;
4469 se = &sit_i->sentries[start];
4470 page = get_current_sit_page(sbi, start);
4472 return PTR_ERR(page);
4473 sit_blk = (struct f2fs_sit_block *)page_address(page);
4474 sit = sit_blk->entries[SIT_ENTRY_OFFSET(sit_i, start)];
4475 f2fs_put_page(page, 1);
4477 err = check_block_count(sbi, start, &sit);
4480 seg_info_from_raw_sit(se, &sit);
4481 if (IS_NODESEG(se->type))
4482 total_node_blocks += se->valid_blocks;
4484 /* build discard map only one time */
4485 if (is_set_ckpt_flags(sbi, CP_TRIMMED_FLAG)) {
4486 memset(se->discard_map, 0xff,
4487 SIT_VBLOCK_MAP_SIZE);
4489 memcpy(se->discard_map,
4491 SIT_VBLOCK_MAP_SIZE);
4492 sbi->discard_blks +=
4493 sbi->blocks_per_seg -
4497 if (__is_large_section(sbi))
4498 get_sec_entry(sbi, start)->valid_blocks +=
4501 start_blk += readed;
4502 } while (start_blk < sit_blk_cnt);
4504 down_read(&curseg->journal_rwsem);
4505 for (i = 0; i < sits_in_cursum(journal); i++) {
4506 unsigned int old_valid_blocks;
4508 start = le32_to_cpu(segno_in_journal(journal, i));
4509 if (start >= MAIN_SEGS(sbi)) {
4510 f2fs_err(sbi, "Wrong journal entry on segno %u",
4512 err = -EFSCORRUPTED;
4516 se = &sit_i->sentries[start];
4517 sit = sit_in_journal(journal, i);
4519 old_valid_blocks = se->valid_blocks;
4520 if (IS_NODESEG(se->type))
4521 total_node_blocks -= old_valid_blocks;
4523 err = check_block_count(sbi, start, &sit);
4526 seg_info_from_raw_sit(se, &sit);
4527 if (IS_NODESEG(se->type))
4528 total_node_blocks += se->valid_blocks;
4530 if (is_set_ckpt_flags(sbi, CP_TRIMMED_FLAG)) {
4531 memset(se->discard_map, 0xff, SIT_VBLOCK_MAP_SIZE);
4533 memcpy(se->discard_map, se->cur_valid_map,
4534 SIT_VBLOCK_MAP_SIZE);
4535 sbi->discard_blks += old_valid_blocks;
4536 sbi->discard_blks -= se->valid_blocks;
4539 if (__is_large_section(sbi)) {
4540 get_sec_entry(sbi, start)->valid_blocks +=
4542 get_sec_entry(sbi, start)->valid_blocks -=
4546 up_read(&curseg->journal_rwsem);
4548 if (!err && total_node_blocks != valid_node_count(sbi)) {
4549 f2fs_err(sbi, "SIT is corrupted node# %u vs %u",
4550 total_node_blocks, valid_node_count(sbi));
4551 err = -EFSCORRUPTED;
4557 static void init_free_segmap(struct f2fs_sb_info *sbi)
4561 struct seg_entry *sentry;
4563 for (start = 0; start < MAIN_SEGS(sbi); start++) {
4564 if (f2fs_usable_blks_in_seg(sbi, start) == 0)
4566 sentry = get_seg_entry(sbi, start);
4567 if (!sentry->valid_blocks)
4568 __set_free(sbi, start);
4570 SIT_I(sbi)->written_valid_blocks +=
4571 sentry->valid_blocks;
4574 /* set use the current segments */
4575 for (type = CURSEG_HOT_DATA; type <= CURSEG_COLD_NODE; type++) {
4576 struct curseg_info *curseg_t = CURSEG_I(sbi, type);
4578 __set_test_and_inuse(sbi, curseg_t->segno);
4582 static void init_dirty_segmap(struct f2fs_sb_info *sbi)
4584 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
4585 struct free_segmap_info *free_i = FREE_I(sbi);
4586 unsigned int segno = 0, offset = 0, secno;
4587 block_t valid_blocks, usable_blks_in_seg;
4588 block_t blks_per_sec = BLKS_PER_SEC(sbi);
4591 /* find dirty segment based on free segmap */
4592 segno = find_next_inuse(free_i, MAIN_SEGS(sbi), offset);
4593 if (segno >= MAIN_SEGS(sbi))
4596 valid_blocks = get_valid_blocks(sbi, segno, false);
4597 usable_blks_in_seg = f2fs_usable_blks_in_seg(sbi, segno);
4598 if (valid_blocks == usable_blks_in_seg || !valid_blocks)
4600 if (valid_blocks > usable_blks_in_seg) {
4601 f2fs_bug_on(sbi, 1);
4604 mutex_lock(&dirty_i->seglist_lock);
4605 __locate_dirty_segment(sbi, segno, DIRTY);
4606 mutex_unlock(&dirty_i->seglist_lock);
4609 if (!__is_large_section(sbi))
4612 mutex_lock(&dirty_i->seglist_lock);
4613 for (segno = 0; segno < MAIN_SEGS(sbi); segno += sbi->segs_per_sec) {
4614 valid_blocks = get_valid_blocks(sbi, segno, true);
4615 secno = GET_SEC_FROM_SEG(sbi, segno);
4617 if (!valid_blocks || valid_blocks == blks_per_sec)
4619 if (IS_CURSEC(sbi, secno))
4621 set_bit(secno, dirty_i->dirty_secmap);
4623 mutex_unlock(&dirty_i->seglist_lock);
4626 static int init_victim_secmap(struct f2fs_sb_info *sbi)
4628 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
4629 unsigned int bitmap_size = f2fs_bitmap_size(MAIN_SECS(sbi));
4631 dirty_i->victim_secmap = f2fs_kvzalloc(sbi, bitmap_size, GFP_KERNEL);
4632 if (!dirty_i->victim_secmap)
4637 static int build_dirty_segmap(struct f2fs_sb_info *sbi)
4639 struct dirty_seglist_info *dirty_i;
4640 unsigned int bitmap_size, i;
4642 /* allocate memory for dirty segments list information */
4643 dirty_i = f2fs_kzalloc(sbi, sizeof(struct dirty_seglist_info),
4648 SM_I(sbi)->dirty_info = dirty_i;
4649 mutex_init(&dirty_i->seglist_lock);
4651 bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi));
4653 for (i = 0; i < NR_DIRTY_TYPE; i++) {
4654 dirty_i->dirty_segmap[i] = f2fs_kvzalloc(sbi, bitmap_size,
4656 if (!dirty_i->dirty_segmap[i])
4660 if (__is_large_section(sbi)) {
4661 bitmap_size = f2fs_bitmap_size(MAIN_SECS(sbi));
4662 dirty_i->dirty_secmap = f2fs_kvzalloc(sbi,
4663 bitmap_size, GFP_KERNEL);
4664 if (!dirty_i->dirty_secmap)
4668 init_dirty_segmap(sbi);
4669 return init_victim_secmap(sbi);
4672 static int sanity_check_curseg(struct f2fs_sb_info *sbi)
4677 * In LFS/SSR curseg, .next_blkoff should point to an unused blkaddr;
4678 * In LFS curseg, all blkaddr after .next_blkoff should be unused.
4680 for (i = 0; i < NR_PERSISTENT_LOG; i++) {
4681 struct curseg_info *curseg = CURSEG_I(sbi, i);
4682 struct seg_entry *se = get_seg_entry(sbi, curseg->segno);
4683 unsigned int blkofs = curseg->next_blkoff;
4685 sanity_check_seg_type(sbi, curseg->seg_type);
4687 if (f2fs_test_bit(blkofs, se->cur_valid_map))
4690 if (curseg->alloc_type == SSR)
4693 for (blkofs += 1; blkofs < sbi->blocks_per_seg; blkofs++) {
4694 if (!f2fs_test_bit(blkofs, se->cur_valid_map))
4698 "Current segment's next free block offset is inconsistent with bitmap, logtype:%u, segno:%u, type:%u, next_blkoff:%u, blkofs:%u",
4699 i, curseg->segno, curseg->alloc_type,
4700 curseg->next_blkoff, blkofs);
4701 return -EFSCORRUPTED;
4707 #ifdef CONFIG_BLK_DEV_ZONED
4709 static int check_zone_write_pointer(struct f2fs_sb_info *sbi,
4710 struct f2fs_dev_info *fdev,
4711 struct blk_zone *zone)
4713 unsigned int wp_segno, wp_blkoff, zone_secno, zone_segno, segno;
4714 block_t zone_block, wp_block, last_valid_block;
4715 unsigned int log_sectors_per_block = sbi->log_blocksize - SECTOR_SHIFT;
4717 struct seg_entry *se;
4719 if (zone->type != BLK_ZONE_TYPE_SEQWRITE_REQ)
4722 wp_block = fdev->start_blk + (zone->wp >> log_sectors_per_block);
4723 wp_segno = GET_SEGNO(sbi, wp_block);
4724 wp_blkoff = wp_block - START_BLOCK(sbi, wp_segno);
4725 zone_block = fdev->start_blk + (zone->start >> log_sectors_per_block);
4726 zone_segno = GET_SEGNO(sbi, zone_block);
4727 zone_secno = GET_SEC_FROM_SEG(sbi, zone_segno);
4729 if (zone_segno >= MAIN_SEGS(sbi))
4733 * Skip check of zones cursegs point to, since
4734 * fix_curseg_write_pointer() checks them.
4736 for (i = 0; i < NO_CHECK_TYPE; i++)
4737 if (zone_secno == GET_SEC_FROM_SEG(sbi,
4738 CURSEG_I(sbi, i)->segno))
4742 * Get last valid block of the zone.
4744 last_valid_block = zone_block - 1;
4745 for (s = sbi->segs_per_sec - 1; s >= 0; s--) {
4746 segno = zone_segno + s;
4747 se = get_seg_entry(sbi, segno);
4748 for (b = sbi->blocks_per_seg - 1; b >= 0; b--)
4749 if (f2fs_test_bit(b, se->cur_valid_map)) {
4750 last_valid_block = START_BLOCK(sbi, segno) + b;
4753 if (last_valid_block >= zone_block)
4758 * If last valid block is beyond the write pointer, report the
4759 * inconsistency. This inconsistency does not cause write error
4760 * because the zone will not be selected for write operation until
4761 * it get discarded. Just report it.
4763 if (last_valid_block >= wp_block) {
4764 f2fs_notice(sbi, "Valid block beyond write pointer: "
4765 "valid block[0x%x,0x%x] wp[0x%x,0x%x]",
4766 GET_SEGNO(sbi, last_valid_block),
4767 GET_BLKOFF_FROM_SEG0(sbi, last_valid_block),
4768 wp_segno, wp_blkoff);
4773 * If there is no valid block in the zone and if write pointer is
4774 * not at zone start, reset the write pointer.
4776 if (last_valid_block + 1 == zone_block && zone->wp != zone->start) {
4778 "Zone without valid block has non-zero write "
4779 "pointer. Reset the write pointer: wp[0x%x,0x%x]",
4780 wp_segno, wp_blkoff);
4781 ret = __f2fs_issue_discard_zone(sbi, fdev->bdev, zone_block,
4782 zone->len >> log_sectors_per_block);
4784 f2fs_err(sbi, "Discard zone failed: %s (errno=%d)",
4793 static struct f2fs_dev_info *get_target_zoned_dev(struct f2fs_sb_info *sbi,
4794 block_t zone_blkaddr)
4798 for (i = 0; i < sbi->s_ndevs; i++) {
4799 if (!bdev_is_zoned(FDEV(i).bdev))
4801 if (sbi->s_ndevs == 1 || (FDEV(i).start_blk <= zone_blkaddr &&
4802 zone_blkaddr <= FDEV(i).end_blk))
4809 static int report_one_zone_cb(struct blk_zone *zone, unsigned int idx,
4812 memcpy(data, zone, sizeof(struct blk_zone));
4816 static int fix_curseg_write_pointer(struct f2fs_sb_info *sbi, int type)
4818 struct curseg_info *cs = CURSEG_I(sbi, type);
4819 struct f2fs_dev_info *zbd;
4820 struct blk_zone zone;
4821 unsigned int cs_section, wp_segno, wp_blkoff, wp_sector_off;
4822 block_t cs_zone_block, wp_block;
4823 unsigned int log_sectors_per_block = sbi->log_blocksize - SECTOR_SHIFT;
4824 sector_t zone_sector;
4827 cs_section = GET_SEC_FROM_SEG(sbi, cs->segno);
4828 cs_zone_block = START_BLOCK(sbi, GET_SEG_FROM_SEC(sbi, cs_section));
4830 zbd = get_target_zoned_dev(sbi, cs_zone_block);
4834 /* report zone for the sector the curseg points to */
4835 zone_sector = (sector_t)(cs_zone_block - zbd->start_blk)
4836 << log_sectors_per_block;
4837 err = blkdev_report_zones(zbd->bdev, zone_sector, 1,
4838 report_one_zone_cb, &zone);
4840 f2fs_err(sbi, "Report zone failed: %s errno=(%d)",
4845 if (zone.type != BLK_ZONE_TYPE_SEQWRITE_REQ)
4848 wp_block = zbd->start_blk + (zone.wp >> log_sectors_per_block);
4849 wp_segno = GET_SEGNO(sbi, wp_block);
4850 wp_blkoff = wp_block - START_BLOCK(sbi, wp_segno);
4851 wp_sector_off = zone.wp & GENMASK(log_sectors_per_block - 1, 0);
4853 if (cs->segno == wp_segno && cs->next_blkoff == wp_blkoff &&
4857 f2fs_notice(sbi, "Unaligned curseg[%d] with write pointer: "
4858 "curseg[0x%x,0x%x] wp[0x%x,0x%x]",
4859 type, cs->segno, cs->next_blkoff, wp_segno, wp_blkoff);
4861 f2fs_notice(sbi, "Assign new section to curseg[%d]: "
4862 "curseg[0x%x,0x%x]", type, cs->segno, cs->next_blkoff);
4864 f2fs_allocate_new_section(sbi, type, true);
4866 /* check consistency of the zone curseg pointed to */
4867 if (check_zone_write_pointer(sbi, zbd, &zone))
4870 /* check newly assigned zone */
4871 cs_section = GET_SEC_FROM_SEG(sbi, cs->segno);
4872 cs_zone_block = START_BLOCK(sbi, GET_SEG_FROM_SEC(sbi, cs_section));
4874 zbd = get_target_zoned_dev(sbi, cs_zone_block);
4878 zone_sector = (sector_t)(cs_zone_block - zbd->start_blk)
4879 << log_sectors_per_block;
4880 err = blkdev_report_zones(zbd->bdev, zone_sector, 1,
4881 report_one_zone_cb, &zone);
4883 f2fs_err(sbi, "Report zone failed: %s errno=(%d)",
4888 if (zone.type != BLK_ZONE_TYPE_SEQWRITE_REQ)
4891 if (zone.wp != zone.start) {
4893 "New zone for curseg[%d] is not yet discarded. "
4894 "Reset the zone: curseg[0x%x,0x%x]",
4895 type, cs->segno, cs->next_blkoff);
4896 err = __f2fs_issue_discard_zone(sbi, zbd->bdev,
4897 zone_sector >> log_sectors_per_block,
4898 zone.len >> log_sectors_per_block);
4900 f2fs_err(sbi, "Discard zone failed: %s (errno=%d)",
4909 int f2fs_fix_curseg_write_pointer(struct f2fs_sb_info *sbi)
4913 for (i = 0; i < NR_PERSISTENT_LOG; i++) {
4914 ret = fix_curseg_write_pointer(sbi, i);
4922 struct check_zone_write_pointer_args {
4923 struct f2fs_sb_info *sbi;
4924 struct f2fs_dev_info *fdev;
4927 static int check_zone_write_pointer_cb(struct blk_zone *zone, unsigned int idx,
4930 struct check_zone_write_pointer_args *args;
4932 args = (struct check_zone_write_pointer_args *)data;
4934 return check_zone_write_pointer(args->sbi, args->fdev, zone);
4937 int f2fs_check_write_pointer(struct f2fs_sb_info *sbi)
4940 struct check_zone_write_pointer_args args;
4942 for (i = 0; i < sbi->s_ndevs; i++) {
4943 if (!bdev_is_zoned(FDEV(i).bdev))
4947 args.fdev = &FDEV(i);
4948 ret = blkdev_report_zones(FDEV(i).bdev, 0, BLK_ALL_ZONES,
4949 check_zone_write_pointer_cb, &args);
4957 static bool is_conv_zone(struct f2fs_sb_info *sbi, unsigned int zone_idx,
4958 unsigned int dev_idx)
4960 if (!bdev_is_zoned(FDEV(dev_idx).bdev))
4962 return !test_bit(zone_idx, FDEV(dev_idx).blkz_seq);
4965 /* Return the zone index in the given device */
4966 static unsigned int get_zone_idx(struct f2fs_sb_info *sbi, unsigned int secno,
4969 block_t sec_start_blkaddr = START_BLOCK(sbi, GET_SEG_FROM_SEC(sbi, secno));
4971 return (sec_start_blkaddr - FDEV(dev_idx).start_blk) >>
4972 sbi->log_blocks_per_blkz;
4976 * Return the usable segments in a section based on the zone's
4977 * corresponding zone capacity. Zone is equal to a section.
4979 static inline unsigned int f2fs_usable_zone_segs_in_sec(
4980 struct f2fs_sb_info *sbi, unsigned int segno)
4982 unsigned int dev_idx, zone_idx, unusable_segs_in_sec;
4984 dev_idx = f2fs_target_device_index(sbi, START_BLOCK(sbi, segno));
4985 zone_idx = get_zone_idx(sbi, GET_SEC_FROM_SEG(sbi, segno), dev_idx);
4987 /* Conventional zone's capacity is always equal to zone size */
4988 if (is_conv_zone(sbi, zone_idx, dev_idx))
4989 return sbi->segs_per_sec;
4992 * If the zone_capacity_blocks array is NULL, then zone capacity
4993 * is equal to the zone size for all zones
4995 if (!FDEV(dev_idx).zone_capacity_blocks)
4996 return sbi->segs_per_sec;
4998 /* Get the segment count beyond zone capacity block */
4999 unusable_segs_in_sec = (sbi->blocks_per_blkz -
5000 FDEV(dev_idx).zone_capacity_blocks[zone_idx]) >>
5001 sbi->log_blocks_per_seg;
5002 return sbi->segs_per_sec - unusable_segs_in_sec;
5006 * Return the number of usable blocks in a segment. The number of blocks
5007 * returned is always equal to the number of blocks in a segment for
5008 * segments fully contained within a sequential zone capacity or a
5009 * conventional zone. For segments partially contained in a sequential
5010 * zone capacity, the number of usable blocks up to the zone capacity
5011 * is returned. 0 is returned in all other cases.
5013 static inline unsigned int f2fs_usable_zone_blks_in_seg(
5014 struct f2fs_sb_info *sbi, unsigned int segno)
5016 block_t seg_start, sec_start_blkaddr, sec_cap_blkaddr;
5017 unsigned int zone_idx, dev_idx, secno;
5019 secno = GET_SEC_FROM_SEG(sbi, segno);
5020 seg_start = START_BLOCK(sbi, segno);
5021 dev_idx = f2fs_target_device_index(sbi, seg_start);
5022 zone_idx = get_zone_idx(sbi, secno, dev_idx);
5025 * Conventional zone's capacity is always equal to zone size,
5026 * so, blocks per segment is unchanged.
5028 if (is_conv_zone(sbi, zone_idx, dev_idx))
5029 return sbi->blocks_per_seg;
5031 if (!FDEV(dev_idx).zone_capacity_blocks)
5032 return sbi->blocks_per_seg;
5034 sec_start_blkaddr = START_BLOCK(sbi, GET_SEG_FROM_SEC(sbi, secno));
5035 sec_cap_blkaddr = sec_start_blkaddr +
5036 FDEV(dev_idx).zone_capacity_blocks[zone_idx];
5039 * If segment starts before zone capacity and spans beyond
5040 * zone capacity, then usable blocks are from seg start to
5041 * zone capacity. If the segment starts after the zone capacity,
5042 * then there are no usable blocks.
5044 if (seg_start >= sec_cap_blkaddr)
5046 if (seg_start + sbi->blocks_per_seg > sec_cap_blkaddr)
5047 return sec_cap_blkaddr - seg_start;
5049 return sbi->blocks_per_seg;
5052 int f2fs_fix_curseg_write_pointer(struct f2fs_sb_info *sbi)
5057 int f2fs_check_write_pointer(struct f2fs_sb_info *sbi)
5062 static inline unsigned int f2fs_usable_zone_blks_in_seg(struct f2fs_sb_info *sbi,
5068 static inline unsigned int f2fs_usable_zone_segs_in_sec(struct f2fs_sb_info *sbi,
5074 unsigned int f2fs_usable_blks_in_seg(struct f2fs_sb_info *sbi,
5077 if (f2fs_sb_has_blkzoned(sbi))
5078 return f2fs_usable_zone_blks_in_seg(sbi, segno);
5080 return sbi->blocks_per_seg;
5083 unsigned int f2fs_usable_segs_in_sec(struct f2fs_sb_info *sbi,
5086 if (f2fs_sb_has_blkzoned(sbi))
5087 return f2fs_usable_zone_segs_in_sec(sbi, segno);
5089 return sbi->segs_per_sec;
5093 * Update min, max modified time for cost-benefit GC algorithm
5095 static void init_min_max_mtime(struct f2fs_sb_info *sbi)
5097 struct sit_info *sit_i = SIT_I(sbi);
5100 down_write(&sit_i->sentry_lock);
5102 sit_i->min_mtime = ULLONG_MAX;
5104 for (segno = 0; segno < MAIN_SEGS(sbi); segno += sbi->segs_per_sec) {
5106 unsigned long long mtime = 0;
5108 for (i = 0; i < sbi->segs_per_sec; i++)
5109 mtime += get_seg_entry(sbi, segno + i)->mtime;
5111 mtime = div_u64(mtime, sbi->segs_per_sec);
5113 if (sit_i->min_mtime > mtime)
5114 sit_i->min_mtime = mtime;
5116 sit_i->max_mtime = get_mtime(sbi, false);
5117 sit_i->dirty_max_mtime = 0;
5118 up_write(&sit_i->sentry_lock);
5121 int f2fs_build_segment_manager(struct f2fs_sb_info *sbi)
5123 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
5124 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
5125 struct f2fs_sm_info *sm_info;
5128 sm_info = f2fs_kzalloc(sbi, sizeof(struct f2fs_sm_info), GFP_KERNEL);
5133 sbi->sm_info = sm_info;
5134 sm_info->seg0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr);
5135 sm_info->main_blkaddr = le32_to_cpu(raw_super->main_blkaddr);
5136 sm_info->segment_count = le32_to_cpu(raw_super->segment_count);
5137 sm_info->reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count);
5138 sm_info->ovp_segments = le32_to_cpu(ckpt->overprov_segment_count);
5139 sm_info->main_segments = le32_to_cpu(raw_super->segment_count_main);
5140 sm_info->ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr);
5141 sm_info->rec_prefree_segments = sm_info->main_segments *
5142 DEF_RECLAIM_PREFREE_SEGMENTS / 100;
5143 if (sm_info->rec_prefree_segments > DEF_MAX_RECLAIM_PREFREE_SEGMENTS)
5144 sm_info->rec_prefree_segments = DEF_MAX_RECLAIM_PREFREE_SEGMENTS;
5146 if (!f2fs_lfs_mode(sbi))
5147 sm_info->ipu_policy = 1 << F2FS_IPU_FSYNC;
5148 sm_info->min_ipu_util = DEF_MIN_IPU_UTIL;
5149 sm_info->min_fsync_blocks = DEF_MIN_FSYNC_BLOCKS;
5150 sm_info->min_seq_blocks = sbi->blocks_per_seg * sbi->segs_per_sec;
5151 sm_info->min_hot_blocks = DEF_MIN_HOT_BLOCKS;
5152 sm_info->min_ssr_sections = reserved_sections(sbi);
5154 INIT_LIST_HEAD(&sm_info->sit_entry_set);
5156 init_rwsem(&sm_info->curseg_lock);
5158 if (!f2fs_readonly(sbi->sb)) {
5159 err = f2fs_create_flush_cmd_control(sbi);
5164 err = create_discard_cmd_control(sbi);
5168 err = build_sit_info(sbi);
5171 err = build_free_segmap(sbi);
5174 err = build_curseg(sbi);
5178 /* reinit free segmap based on SIT */
5179 err = build_sit_entries(sbi);
5183 init_free_segmap(sbi);
5184 err = build_dirty_segmap(sbi);
5188 err = sanity_check_curseg(sbi);
5192 init_min_max_mtime(sbi);
5196 static void discard_dirty_segmap(struct f2fs_sb_info *sbi,
5197 enum dirty_type dirty_type)
5199 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
5201 mutex_lock(&dirty_i->seglist_lock);
5202 kvfree(dirty_i->dirty_segmap[dirty_type]);
5203 dirty_i->nr_dirty[dirty_type] = 0;
5204 mutex_unlock(&dirty_i->seglist_lock);
5207 static void destroy_victim_secmap(struct f2fs_sb_info *sbi)
5209 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
5211 kvfree(dirty_i->victim_secmap);
5214 static void destroy_dirty_segmap(struct f2fs_sb_info *sbi)
5216 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
5222 /* discard pre-free/dirty segments list */
5223 for (i = 0; i < NR_DIRTY_TYPE; i++)
5224 discard_dirty_segmap(sbi, i);
5226 if (__is_large_section(sbi)) {
5227 mutex_lock(&dirty_i->seglist_lock);
5228 kvfree(dirty_i->dirty_secmap);
5229 mutex_unlock(&dirty_i->seglist_lock);
5232 destroy_victim_secmap(sbi);
5233 SM_I(sbi)->dirty_info = NULL;
5237 static void destroy_curseg(struct f2fs_sb_info *sbi)
5239 struct curseg_info *array = SM_I(sbi)->curseg_array;
5244 SM_I(sbi)->curseg_array = NULL;
5245 for (i = 0; i < NR_CURSEG_TYPE; i++) {
5246 kfree(array[i].sum_blk);
5247 kfree(array[i].journal);
5252 static void destroy_free_segmap(struct f2fs_sb_info *sbi)
5254 struct free_segmap_info *free_i = SM_I(sbi)->free_info;
5258 SM_I(sbi)->free_info = NULL;
5259 kvfree(free_i->free_segmap);
5260 kvfree(free_i->free_secmap);
5264 static void destroy_sit_info(struct f2fs_sb_info *sbi)
5266 struct sit_info *sit_i = SIT_I(sbi);
5271 if (sit_i->sentries)
5272 kvfree(sit_i->bitmap);
5273 kfree(sit_i->tmp_map);
5275 kvfree(sit_i->sentries);
5276 kvfree(sit_i->sec_entries);
5277 kvfree(sit_i->dirty_sentries_bitmap);
5279 SM_I(sbi)->sit_info = NULL;
5280 kvfree(sit_i->sit_bitmap);
5281 #ifdef CONFIG_F2FS_CHECK_FS
5282 kvfree(sit_i->sit_bitmap_mir);
5283 kvfree(sit_i->invalid_segmap);
5288 void f2fs_destroy_segment_manager(struct f2fs_sb_info *sbi)
5290 struct f2fs_sm_info *sm_info = SM_I(sbi);
5294 f2fs_destroy_flush_cmd_control(sbi, true);
5295 destroy_discard_cmd_control(sbi);
5296 destroy_dirty_segmap(sbi);
5297 destroy_curseg(sbi);
5298 destroy_free_segmap(sbi);
5299 destroy_sit_info(sbi);
5300 sbi->sm_info = NULL;
5304 int __init f2fs_create_segment_manager_caches(void)
5306 discard_entry_slab = f2fs_kmem_cache_create("f2fs_discard_entry",
5307 sizeof(struct discard_entry));
5308 if (!discard_entry_slab)
5311 discard_cmd_slab = f2fs_kmem_cache_create("f2fs_discard_cmd",
5312 sizeof(struct discard_cmd));
5313 if (!discard_cmd_slab)
5314 goto destroy_discard_entry;
5316 sit_entry_set_slab = f2fs_kmem_cache_create("f2fs_sit_entry_set",
5317 sizeof(struct sit_entry_set));
5318 if (!sit_entry_set_slab)
5319 goto destroy_discard_cmd;
5321 inmem_entry_slab = f2fs_kmem_cache_create("f2fs_inmem_page_entry",
5322 sizeof(struct inmem_pages));
5323 if (!inmem_entry_slab)
5324 goto destroy_sit_entry_set;
5327 destroy_sit_entry_set:
5328 kmem_cache_destroy(sit_entry_set_slab);
5329 destroy_discard_cmd:
5330 kmem_cache_destroy(discard_cmd_slab);
5331 destroy_discard_entry:
5332 kmem_cache_destroy(discard_entry_slab);
5337 void f2fs_destroy_segment_manager_caches(void)
5339 kmem_cache_destroy(sit_entry_set_slab);
5340 kmem_cache_destroy(discard_cmd_slab);
5341 kmem_cache_destroy(discard_entry_slab);
5342 kmem_cache_destroy(inmem_entry_slab);