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 set_page_private_atomic(page);
191 new = f2fs_kmem_cache_alloc(inmem_entry_slab, GFP_NOFS);
193 /* add atomic page indices to the list */
195 INIT_LIST_HEAD(&new->list);
197 /* increase reference count with clean state */
199 mutex_lock(&F2FS_I(inode)->inmem_lock);
200 list_add_tail(&new->list, &F2FS_I(inode)->inmem_pages);
201 inc_page_count(F2FS_I_SB(inode), F2FS_INMEM_PAGES);
202 mutex_unlock(&F2FS_I(inode)->inmem_lock);
204 trace_f2fs_register_inmem_page(page, INMEM);
207 static int __revoke_inmem_pages(struct inode *inode,
208 struct list_head *head, bool drop, bool recover,
211 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
212 struct inmem_pages *cur, *tmp;
215 list_for_each_entry_safe(cur, tmp, head, list) {
216 struct page *page = cur->page;
219 trace_f2fs_commit_inmem_page(page, INMEM_DROP);
223 * to avoid deadlock in between page lock and
226 if (!trylock_page(page))
232 f2fs_wait_on_page_writeback(page, DATA, true, true);
235 struct dnode_of_data dn;
238 trace_f2fs_commit_inmem_page(page, INMEM_REVOKE);
240 set_new_dnode(&dn, inode, NULL, NULL, 0);
241 err = f2fs_get_dnode_of_data(&dn, page->index,
244 if (err == -ENOMEM) {
245 congestion_wait(BLK_RW_ASYNC,
254 err = f2fs_get_node_info(sbi, dn.nid, &ni);
260 if (cur->old_addr == NEW_ADDR) {
261 f2fs_invalidate_blocks(sbi, dn.data_blkaddr);
262 f2fs_update_data_blkaddr(&dn, NEW_ADDR);
264 f2fs_replace_block(sbi, &dn, dn.data_blkaddr,
265 cur->old_addr, ni.version, true, true);
269 /* we don't need to invalidate this in the sccessful status */
270 if (drop || recover) {
271 ClearPageUptodate(page);
272 clear_page_private_gcing(page);
274 detach_page_private(page);
275 set_page_private(page, 0);
276 f2fs_put_page(page, 1);
278 list_del(&cur->list);
279 kmem_cache_free(inmem_entry_slab, cur);
280 dec_page_count(F2FS_I_SB(inode), F2FS_INMEM_PAGES);
285 void f2fs_drop_inmem_pages_all(struct f2fs_sb_info *sbi, bool gc_failure)
287 struct list_head *head = &sbi->inode_list[ATOMIC_FILE];
289 struct f2fs_inode_info *fi;
290 unsigned int count = sbi->atomic_files;
291 unsigned int looped = 0;
293 spin_lock(&sbi->inode_lock[ATOMIC_FILE]);
294 if (list_empty(head)) {
295 spin_unlock(&sbi->inode_lock[ATOMIC_FILE]);
298 fi = list_first_entry(head, struct f2fs_inode_info, inmem_ilist);
299 inode = igrab(&fi->vfs_inode);
301 list_move_tail(&fi->inmem_ilist, head);
302 spin_unlock(&sbi->inode_lock[ATOMIC_FILE]);
306 if (!fi->i_gc_failures[GC_FAILURE_ATOMIC])
309 set_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST);
310 f2fs_drop_inmem_pages(inode);
314 congestion_wait(BLK_RW_ASYNC, DEFAULT_IO_TIMEOUT);
317 if (++looped >= count)
323 void f2fs_drop_inmem_pages(struct inode *inode)
325 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
326 struct f2fs_inode_info *fi = F2FS_I(inode);
329 mutex_lock(&fi->inmem_lock);
330 if (list_empty(&fi->inmem_pages)) {
331 fi->i_gc_failures[GC_FAILURE_ATOMIC] = 0;
333 spin_lock(&sbi->inode_lock[ATOMIC_FILE]);
334 if (!list_empty(&fi->inmem_ilist))
335 list_del_init(&fi->inmem_ilist);
336 if (f2fs_is_atomic_file(inode)) {
337 clear_inode_flag(inode, FI_ATOMIC_FILE);
340 spin_unlock(&sbi->inode_lock[ATOMIC_FILE]);
342 mutex_unlock(&fi->inmem_lock);
345 __revoke_inmem_pages(inode, &fi->inmem_pages,
347 mutex_unlock(&fi->inmem_lock);
351 void f2fs_drop_inmem_page(struct inode *inode, struct page *page)
353 struct f2fs_inode_info *fi = F2FS_I(inode);
354 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
355 struct list_head *head = &fi->inmem_pages;
356 struct inmem_pages *cur = NULL;
358 f2fs_bug_on(sbi, !page_private_atomic(page));
360 mutex_lock(&fi->inmem_lock);
361 list_for_each_entry(cur, head, list) {
362 if (cur->page == page)
366 f2fs_bug_on(sbi, list_empty(head) || cur->page != page);
367 list_del(&cur->list);
368 mutex_unlock(&fi->inmem_lock);
370 dec_page_count(sbi, F2FS_INMEM_PAGES);
371 kmem_cache_free(inmem_entry_slab, cur);
373 ClearPageUptodate(page);
374 clear_page_private_atomic(page);
375 f2fs_put_page(page, 0);
377 detach_page_private(page);
378 set_page_private(page, 0);
380 trace_f2fs_commit_inmem_page(page, INMEM_INVALIDATE);
383 static int __f2fs_commit_inmem_pages(struct inode *inode)
385 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
386 struct f2fs_inode_info *fi = F2FS_I(inode);
387 struct inmem_pages *cur, *tmp;
388 struct f2fs_io_info fio = {
393 .op_flags = REQ_SYNC | REQ_PRIO,
394 .io_type = FS_DATA_IO,
396 struct list_head revoke_list;
397 bool submit_bio = false;
400 INIT_LIST_HEAD(&revoke_list);
402 list_for_each_entry_safe(cur, tmp, &fi->inmem_pages, list) {
403 struct page *page = cur->page;
406 if (page->mapping == inode->i_mapping) {
407 trace_f2fs_commit_inmem_page(page, INMEM);
409 f2fs_wait_on_page_writeback(page, DATA, true, true);
411 set_page_dirty(page);
412 if (clear_page_dirty_for_io(page)) {
413 inode_dec_dirty_pages(inode);
414 f2fs_remove_dirty_inode(inode);
418 fio.old_blkaddr = NULL_ADDR;
419 fio.encrypted_page = NULL;
420 fio.need_lock = LOCK_DONE;
421 err = f2fs_do_write_data_page(&fio);
423 if (err == -ENOMEM) {
424 congestion_wait(BLK_RW_ASYNC,
432 /* record old blkaddr for revoking */
433 cur->old_addr = fio.old_blkaddr;
437 list_move_tail(&cur->list, &revoke_list);
441 f2fs_submit_merged_write_cond(sbi, inode, NULL, 0, DATA);
445 * try to revoke all committed pages, but still we could fail
446 * due to no memory or other reason, if that happened, EAGAIN
447 * will be returned, which means in such case, transaction is
448 * already not integrity, caller should use journal to do the
449 * recovery or rewrite & commit last transaction. For other
450 * error number, revoking was done by filesystem itself.
452 err = __revoke_inmem_pages(inode, &revoke_list,
455 /* drop all uncommitted pages */
456 __revoke_inmem_pages(inode, &fi->inmem_pages,
459 __revoke_inmem_pages(inode, &revoke_list,
460 false, false, false);
466 int f2fs_commit_inmem_pages(struct inode *inode)
468 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
469 struct f2fs_inode_info *fi = F2FS_I(inode);
472 f2fs_balance_fs(sbi, true);
474 down_write(&fi->i_gc_rwsem[WRITE]);
477 set_inode_flag(inode, FI_ATOMIC_COMMIT);
479 mutex_lock(&fi->inmem_lock);
480 err = __f2fs_commit_inmem_pages(inode);
481 mutex_unlock(&fi->inmem_lock);
483 clear_inode_flag(inode, FI_ATOMIC_COMMIT);
486 up_write(&fi->i_gc_rwsem[WRITE]);
492 * This function balances dirty node and dentry pages.
493 * In addition, it controls garbage collection.
495 void f2fs_balance_fs(struct f2fs_sb_info *sbi, bool need)
497 if (time_to_inject(sbi, FAULT_CHECKPOINT)) {
498 f2fs_show_injection_info(sbi, FAULT_CHECKPOINT);
499 f2fs_stop_checkpoint(sbi, false);
502 /* balance_fs_bg is able to be pending */
503 if (need && excess_cached_nats(sbi))
504 f2fs_balance_fs_bg(sbi, false);
506 if (!f2fs_is_checkpoint_ready(sbi))
510 * We should do GC or end up with checkpoint, if there are so many dirty
511 * dir/node pages without enough free segments.
513 if (has_not_enough_free_secs(sbi, 0, 0)) {
514 if (test_opt(sbi, GC_MERGE) && sbi->gc_thread &&
515 sbi->gc_thread->f2fs_gc_task) {
518 prepare_to_wait(&sbi->gc_thread->fggc_wq, &wait,
519 TASK_UNINTERRUPTIBLE);
520 wake_up(&sbi->gc_thread->gc_wait_queue_head);
522 finish_wait(&sbi->gc_thread->fggc_wq, &wait);
524 down_write(&sbi->gc_lock);
525 f2fs_gc(sbi, false, false, false, NULL_SEGNO);
530 void f2fs_balance_fs_bg(struct f2fs_sb_info *sbi, bool from_bg)
532 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
535 /* try to shrink extent cache when there is no enough memory */
536 if (!f2fs_available_free_memory(sbi, EXTENT_CACHE))
537 f2fs_shrink_extent_tree(sbi, EXTENT_CACHE_SHRINK_NUMBER);
539 /* check the # of cached NAT entries */
540 if (!f2fs_available_free_memory(sbi, NAT_ENTRIES))
541 f2fs_try_to_free_nats(sbi, NAT_ENTRY_PER_BLOCK);
543 if (!f2fs_available_free_memory(sbi, FREE_NIDS))
544 f2fs_try_to_free_nids(sbi, MAX_FREE_NIDS);
546 f2fs_build_free_nids(sbi, false, false);
548 if (excess_dirty_nats(sbi) || excess_dirty_nodes(sbi) ||
549 excess_prefree_segs(sbi))
552 /* there is background inflight IO or foreground operation recently */
553 if (is_inflight_io(sbi, REQ_TIME) ||
554 (!f2fs_time_over(sbi, REQ_TIME) && rwsem_is_locked(&sbi->cp_rwsem)))
557 /* exceed periodical checkpoint timeout threshold */
558 if (f2fs_time_over(sbi, CP_TIME))
561 /* checkpoint is the only way to shrink partial cached entries */
562 if (f2fs_available_free_memory(sbi, NAT_ENTRIES) ||
563 f2fs_available_free_memory(sbi, INO_ENTRIES))
567 if (test_opt(sbi, DATA_FLUSH) && from_bg) {
568 struct blk_plug plug;
570 mutex_lock(&sbi->flush_lock);
572 blk_start_plug(&plug);
573 f2fs_sync_dirty_inodes(sbi, FILE_INODE);
574 blk_finish_plug(&plug);
576 mutex_unlock(&sbi->flush_lock);
578 f2fs_sync_fs(sbi->sb, true);
579 stat_inc_bg_cp_count(sbi->stat_info);
582 static int __submit_flush_wait(struct f2fs_sb_info *sbi,
583 struct block_device *bdev)
585 int ret = blkdev_issue_flush(bdev);
587 trace_f2fs_issue_flush(bdev, test_opt(sbi, NOBARRIER),
588 test_opt(sbi, FLUSH_MERGE), ret);
592 static int submit_flush_wait(struct f2fs_sb_info *sbi, nid_t ino)
597 if (!f2fs_is_multi_device(sbi))
598 return __submit_flush_wait(sbi, sbi->sb->s_bdev);
600 for (i = 0; i < sbi->s_ndevs; i++) {
601 if (!f2fs_is_dirty_device(sbi, ino, i, FLUSH_INO))
603 ret = __submit_flush_wait(sbi, FDEV(i).bdev);
610 static int issue_flush_thread(void *data)
612 struct f2fs_sb_info *sbi = data;
613 struct flush_cmd_control *fcc = SM_I(sbi)->fcc_info;
614 wait_queue_head_t *q = &fcc->flush_wait_queue;
616 if (kthread_should_stop())
619 if (!llist_empty(&fcc->issue_list)) {
620 struct flush_cmd *cmd, *next;
623 fcc->dispatch_list = llist_del_all(&fcc->issue_list);
624 fcc->dispatch_list = llist_reverse_order(fcc->dispatch_list);
626 cmd = llist_entry(fcc->dispatch_list, struct flush_cmd, llnode);
628 ret = submit_flush_wait(sbi, cmd->ino);
629 atomic_inc(&fcc->issued_flush);
631 llist_for_each_entry_safe(cmd, next,
632 fcc->dispatch_list, llnode) {
634 complete(&cmd->wait);
636 fcc->dispatch_list = NULL;
639 wait_event_interruptible(*q,
640 kthread_should_stop() || !llist_empty(&fcc->issue_list));
644 int f2fs_issue_flush(struct f2fs_sb_info *sbi, nid_t ino)
646 struct flush_cmd_control *fcc = SM_I(sbi)->fcc_info;
647 struct flush_cmd cmd;
650 if (test_opt(sbi, NOBARRIER))
653 if (!test_opt(sbi, FLUSH_MERGE)) {
654 atomic_inc(&fcc->queued_flush);
655 ret = submit_flush_wait(sbi, ino);
656 atomic_dec(&fcc->queued_flush);
657 atomic_inc(&fcc->issued_flush);
661 if (atomic_inc_return(&fcc->queued_flush) == 1 ||
662 f2fs_is_multi_device(sbi)) {
663 ret = submit_flush_wait(sbi, ino);
664 atomic_dec(&fcc->queued_flush);
666 atomic_inc(&fcc->issued_flush);
671 init_completion(&cmd.wait);
673 llist_add(&cmd.llnode, &fcc->issue_list);
676 * update issue_list before we wake up issue_flush thread, this
677 * smp_mb() pairs with another barrier in ___wait_event(), see
678 * more details in comments of waitqueue_active().
682 if (waitqueue_active(&fcc->flush_wait_queue))
683 wake_up(&fcc->flush_wait_queue);
685 if (fcc->f2fs_issue_flush) {
686 wait_for_completion(&cmd.wait);
687 atomic_dec(&fcc->queued_flush);
689 struct llist_node *list;
691 list = llist_del_all(&fcc->issue_list);
693 wait_for_completion(&cmd.wait);
694 atomic_dec(&fcc->queued_flush);
696 struct flush_cmd *tmp, *next;
698 ret = submit_flush_wait(sbi, ino);
700 llist_for_each_entry_safe(tmp, next, list, llnode) {
703 atomic_dec(&fcc->queued_flush);
707 complete(&tmp->wait);
715 int f2fs_create_flush_cmd_control(struct f2fs_sb_info *sbi)
717 dev_t dev = sbi->sb->s_bdev->bd_dev;
718 struct flush_cmd_control *fcc;
721 if (SM_I(sbi)->fcc_info) {
722 fcc = SM_I(sbi)->fcc_info;
723 if (fcc->f2fs_issue_flush)
728 fcc = f2fs_kzalloc(sbi, sizeof(struct flush_cmd_control), GFP_KERNEL);
731 atomic_set(&fcc->issued_flush, 0);
732 atomic_set(&fcc->queued_flush, 0);
733 init_waitqueue_head(&fcc->flush_wait_queue);
734 init_llist_head(&fcc->issue_list);
735 SM_I(sbi)->fcc_info = fcc;
736 if (!test_opt(sbi, FLUSH_MERGE))
740 fcc->f2fs_issue_flush = kthread_run(issue_flush_thread, sbi,
741 "f2fs_flush-%u:%u", MAJOR(dev), MINOR(dev));
742 if (IS_ERR(fcc->f2fs_issue_flush)) {
743 err = PTR_ERR(fcc->f2fs_issue_flush);
745 SM_I(sbi)->fcc_info = NULL;
752 void f2fs_destroy_flush_cmd_control(struct f2fs_sb_info *sbi, bool free)
754 struct flush_cmd_control *fcc = SM_I(sbi)->fcc_info;
756 if (fcc && fcc->f2fs_issue_flush) {
757 struct task_struct *flush_thread = fcc->f2fs_issue_flush;
759 fcc->f2fs_issue_flush = NULL;
760 kthread_stop(flush_thread);
764 SM_I(sbi)->fcc_info = NULL;
768 int f2fs_flush_device_cache(struct f2fs_sb_info *sbi)
772 if (!f2fs_is_multi_device(sbi))
775 if (test_opt(sbi, NOBARRIER))
778 for (i = 1; i < sbi->s_ndevs; i++) {
779 if (!f2fs_test_bit(i, (char *)&sbi->dirty_device))
781 ret = __submit_flush_wait(sbi, FDEV(i).bdev);
785 spin_lock(&sbi->dev_lock);
786 f2fs_clear_bit(i, (char *)&sbi->dirty_device);
787 spin_unlock(&sbi->dev_lock);
793 static void __locate_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno,
794 enum dirty_type dirty_type)
796 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
798 /* need not be added */
799 if (IS_CURSEG(sbi, segno))
802 if (!test_and_set_bit(segno, dirty_i->dirty_segmap[dirty_type]))
803 dirty_i->nr_dirty[dirty_type]++;
805 if (dirty_type == DIRTY) {
806 struct seg_entry *sentry = get_seg_entry(sbi, segno);
807 enum dirty_type t = sentry->type;
809 if (unlikely(t >= DIRTY)) {
813 if (!test_and_set_bit(segno, dirty_i->dirty_segmap[t]))
814 dirty_i->nr_dirty[t]++;
816 if (__is_large_section(sbi)) {
817 unsigned int secno = GET_SEC_FROM_SEG(sbi, segno);
818 block_t valid_blocks =
819 get_valid_blocks(sbi, segno, true);
821 f2fs_bug_on(sbi, unlikely(!valid_blocks ||
822 valid_blocks == BLKS_PER_SEC(sbi)));
824 if (!IS_CURSEC(sbi, secno))
825 set_bit(secno, dirty_i->dirty_secmap);
830 static void __remove_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno,
831 enum dirty_type dirty_type)
833 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
834 block_t valid_blocks;
836 if (test_and_clear_bit(segno, dirty_i->dirty_segmap[dirty_type]))
837 dirty_i->nr_dirty[dirty_type]--;
839 if (dirty_type == DIRTY) {
840 struct seg_entry *sentry = get_seg_entry(sbi, segno);
841 enum dirty_type t = sentry->type;
843 if (test_and_clear_bit(segno, dirty_i->dirty_segmap[t]))
844 dirty_i->nr_dirty[t]--;
846 valid_blocks = get_valid_blocks(sbi, segno, true);
847 if (valid_blocks == 0) {
848 clear_bit(GET_SEC_FROM_SEG(sbi, segno),
849 dirty_i->victim_secmap);
850 #ifdef CONFIG_F2FS_CHECK_FS
851 clear_bit(segno, SIT_I(sbi)->invalid_segmap);
854 if (__is_large_section(sbi)) {
855 unsigned int secno = GET_SEC_FROM_SEG(sbi, segno);
858 valid_blocks == BLKS_PER_SEC(sbi)) {
859 clear_bit(secno, dirty_i->dirty_secmap);
863 if (!IS_CURSEC(sbi, secno))
864 set_bit(secno, dirty_i->dirty_secmap);
870 * Should not occur error such as -ENOMEM.
871 * Adding dirty entry into seglist is not critical operation.
872 * If a given segment is one of current working segments, it won't be added.
874 static void locate_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno)
876 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
877 unsigned short valid_blocks, ckpt_valid_blocks;
878 unsigned int usable_blocks;
880 if (segno == NULL_SEGNO || IS_CURSEG(sbi, segno))
883 usable_blocks = f2fs_usable_blks_in_seg(sbi, segno);
884 mutex_lock(&dirty_i->seglist_lock);
886 valid_blocks = get_valid_blocks(sbi, segno, false);
887 ckpt_valid_blocks = get_ckpt_valid_blocks(sbi, segno, false);
889 if (valid_blocks == 0 && (!is_sbi_flag_set(sbi, SBI_CP_DISABLED) ||
890 ckpt_valid_blocks == usable_blocks)) {
891 __locate_dirty_segment(sbi, segno, PRE);
892 __remove_dirty_segment(sbi, segno, DIRTY);
893 } else if (valid_blocks < usable_blocks) {
894 __locate_dirty_segment(sbi, segno, DIRTY);
896 /* Recovery routine with SSR needs this */
897 __remove_dirty_segment(sbi, segno, DIRTY);
900 mutex_unlock(&dirty_i->seglist_lock);
903 /* This moves currently empty dirty blocks to prefree. Must hold seglist_lock */
904 void f2fs_dirty_to_prefree(struct f2fs_sb_info *sbi)
906 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
909 mutex_lock(&dirty_i->seglist_lock);
910 for_each_set_bit(segno, dirty_i->dirty_segmap[DIRTY], MAIN_SEGS(sbi)) {
911 if (get_valid_blocks(sbi, segno, false))
913 if (IS_CURSEG(sbi, segno))
915 __locate_dirty_segment(sbi, segno, PRE);
916 __remove_dirty_segment(sbi, segno, DIRTY);
918 mutex_unlock(&dirty_i->seglist_lock);
921 block_t f2fs_get_unusable_blocks(struct f2fs_sb_info *sbi)
924 (overprovision_segments(sbi) - reserved_segments(sbi));
925 block_t ovp_holes = ovp_hole_segs << sbi->log_blocks_per_seg;
926 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
927 block_t holes[2] = {0, 0}; /* DATA and NODE */
929 struct seg_entry *se;
932 mutex_lock(&dirty_i->seglist_lock);
933 for_each_set_bit(segno, dirty_i->dirty_segmap[DIRTY], MAIN_SEGS(sbi)) {
934 se = get_seg_entry(sbi, segno);
935 if (IS_NODESEG(se->type))
936 holes[NODE] += f2fs_usable_blks_in_seg(sbi, segno) -
939 holes[DATA] += f2fs_usable_blks_in_seg(sbi, segno) -
942 mutex_unlock(&dirty_i->seglist_lock);
944 unusable = holes[DATA] > holes[NODE] ? holes[DATA] : holes[NODE];
945 if (unusable > ovp_holes)
946 return unusable - ovp_holes;
950 int f2fs_disable_cp_again(struct f2fs_sb_info *sbi, block_t unusable)
953 (overprovision_segments(sbi) - reserved_segments(sbi));
954 if (unusable > F2FS_OPTION(sbi).unusable_cap)
956 if (is_sbi_flag_set(sbi, SBI_CP_DISABLED_QUICK) &&
957 dirty_segments(sbi) > ovp_hole_segs)
962 /* This is only used by SBI_CP_DISABLED */
963 static unsigned int get_free_segment(struct f2fs_sb_info *sbi)
965 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
966 unsigned int segno = 0;
968 mutex_lock(&dirty_i->seglist_lock);
969 for_each_set_bit(segno, dirty_i->dirty_segmap[DIRTY], MAIN_SEGS(sbi)) {
970 if (get_valid_blocks(sbi, segno, false))
972 if (get_ckpt_valid_blocks(sbi, segno, false))
974 mutex_unlock(&dirty_i->seglist_lock);
977 mutex_unlock(&dirty_i->seglist_lock);
981 static struct discard_cmd *__create_discard_cmd(struct f2fs_sb_info *sbi,
982 struct block_device *bdev, block_t lstart,
983 block_t start, block_t len)
985 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
986 struct list_head *pend_list;
987 struct discard_cmd *dc;
989 f2fs_bug_on(sbi, !len);
991 pend_list = &dcc->pend_list[plist_idx(len)];
993 dc = f2fs_kmem_cache_alloc(discard_cmd_slab, GFP_NOFS);
994 INIT_LIST_HEAD(&dc->list);
1003 init_completion(&dc->wait);
1004 list_add_tail(&dc->list, pend_list);
1005 spin_lock_init(&dc->lock);
1007 atomic_inc(&dcc->discard_cmd_cnt);
1008 dcc->undiscard_blks += len;
1013 static struct discard_cmd *__attach_discard_cmd(struct f2fs_sb_info *sbi,
1014 struct block_device *bdev, block_t lstart,
1015 block_t start, block_t len,
1016 struct rb_node *parent, struct rb_node **p,
1019 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1020 struct discard_cmd *dc;
1022 dc = __create_discard_cmd(sbi, bdev, lstart, start, len);
1024 rb_link_node(&dc->rb_node, parent, p);
1025 rb_insert_color_cached(&dc->rb_node, &dcc->root, leftmost);
1030 static void __detach_discard_cmd(struct discard_cmd_control *dcc,
1031 struct discard_cmd *dc)
1033 if (dc->state == D_DONE)
1034 atomic_sub(dc->queued, &dcc->queued_discard);
1036 list_del(&dc->list);
1037 rb_erase_cached(&dc->rb_node, &dcc->root);
1038 dcc->undiscard_blks -= dc->len;
1040 kmem_cache_free(discard_cmd_slab, dc);
1042 atomic_dec(&dcc->discard_cmd_cnt);
1045 static void __remove_discard_cmd(struct f2fs_sb_info *sbi,
1046 struct discard_cmd *dc)
1048 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1049 unsigned long flags;
1051 trace_f2fs_remove_discard(dc->bdev, dc->start, dc->len);
1053 spin_lock_irqsave(&dc->lock, flags);
1055 spin_unlock_irqrestore(&dc->lock, flags);
1058 spin_unlock_irqrestore(&dc->lock, flags);
1060 f2fs_bug_on(sbi, dc->ref);
1062 if (dc->error == -EOPNOTSUPP)
1067 "%sF2FS-fs (%s): Issue discard(%u, %u, %u) failed, ret: %d",
1068 KERN_INFO, sbi->sb->s_id,
1069 dc->lstart, dc->start, dc->len, dc->error);
1070 __detach_discard_cmd(dcc, dc);
1073 static void f2fs_submit_discard_endio(struct bio *bio)
1075 struct discard_cmd *dc = (struct discard_cmd *)bio->bi_private;
1076 unsigned long flags;
1078 spin_lock_irqsave(&dc->lock, flags);
1080 dc->error = blk_status_to_errno(bio->bi_status);
1082 if (!dc->bio_ref && dc->state == D_SUBMIT) {
1084 complete_all(&dc->wait);
1086 spin_unlock_irqrestore(&dc->lock, flags);
1090 static void __check_sit_bitmap(struct f2fs_sb_info *sbi,
1091 block_t start, block_t end)
1093 #ifdef CONFIG_F2FS_CHECK_FS
1094 struct seg_entry *sentry;
1096 block_t blk = start;
1097 unsigned long offset, size, max_blocks = sbi->blocks_per_seg;
1101 segno = GET_SEGNO(sbi, blk);
1102 sentry = get_seg_entry(sbi, segno);
1103 offset = GET_BLKOFF_FROM_SEG0(sbi, blk);
1105 if (end < START_BLOCK(sbi, segno + 1))
1106 size = GET_BLKOFF_FROM_SEG0(sbi, end);
1109 map = (unsigned long *)(sentry->cur_valid_map);
1110 offset = __find_rev_next_bit(map, size, offset);
1111 f2fs_bug_on(sbi, offset != size);
1112 blk = START_BLOCK(sbi, segno + 1);
1117 static void __init_discard_policy(struct f2fs_sb_info *sbi,
1118 struct discard_policy *dpolicy,
1119 int discard_type, unsigned int granularity)
1121 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1124 dpolicy->type = discard_type;
1125 dpolicy->sync = true;
1126 dpolicy->ordered = false;
1127 dpolicy->granularity = granularity;
1129 dpolicy->max_requests = DEF_MAX_DISCARD_REQUEST;
1130 dpolicy->io_aware_gran = MAX_PLIST_NUM;
1131 dpolicy->timeout = false;
1133 if (discard_type == DPOLICY_BG) {
1134 dpolicy->min_interval = DEF_MIN_DISCARD_ISSUE_TIME;
1135 dpolicy->mid_interval = DEF_MID_DISCARD_ISSUE_TIME;
1136 dpolicy->max_interval = DEF_MAX_DISCARD_ISSUE_TIME;
1137 dpolicy->io_aware = true;
1138 dpolicy->sync = false;
1139 dpolicy->ordered = true;
1140 if (utilization(sbi) > DEF_DISCARD_URGENT_UTIL) {
1141 dpolicy->granularity = 1;
1142 if (atomic_read(&dcc->discard_cmd_cnt))
1143 dpolicy->max_interval =
1144 DEF_MIN_DISCARD_ISSUE_TIME;
1146 } else if (discard_type == DPOLICY_FORCE) {
1147 dpolicy->min_interval = DEF_MIN_DISCARD_ISSUE_TIME;
1148 dpolicy->mid_interval = DEF_MID_DISCARD_ISSUE_TIME;
1149 dpolicy->max_interval = DEF_MAX_DISCARD_ISSUE_TIME;
1150 dpolicy->io_aware = false;
1151 } else if (discard_type == DPOLICY_FSTRIM) {
1152 dpolicy->io_aware = false;
1153 } else if (discard_type == DPOLICY_UMOUNT) {
1154 dpolicy->io_aware = false;
1155 /* we need to issue all to keep CP_TRIMMED_FLAG */
1156 dpolicy->granularity = 1;
1157 dpolicy->timeout = true;
1161 static void __update_discard_tree_range(struct f2fs_sb_info *sbi,
1162 struct block_device *bdev, block_t lstart,
1163 block_t start, block_t len);
1164 /* this function is copied from blkdev_issue_discard from block/blk-lib.c */
1165 static int __submit_discard_cmd(struct f2fs_sb_info *sbi,
1166 struct discard_policy *dpolicy,
1167 struct discard_cmd *dc,
1168 unsigned int *issued)
1170 struct block_device *bdev = dc->bdev;
1171 struct request_queue *q = bdev_get_queue(bdev);
1172 unsigned int max_discard_blocks =
1173 SECTOR_TO_BLOCK(q->limits.max_discard_sectors);
1174 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1175 struct list_head *wait_list = (dpolicy->type == DPOLICY_FSTRIM) ?
1176 &(dcc->fstrim_list) : &(dcc->wait_list);
1177 int flag = dpolicy->sync ? REQ_SYNC : 0;
1178 block_t lstart, start, len, total_len;
1181 if (dc->state != D_PREP)
1184 if (is_sbi_flag_set(sbi, SBI_NEED_FSCK))
1187 trace_f2fs_issue_discard(bdev, dc->start, dc->len);
1189 lstart = dc->lstart;
1196 while (total_len && *issued < dpolicy->max_requests && !err) {
1197 struct bio *bio = NULL;
1198 unsigned long flags;
1201 if (len > max_discard_blocks) {
1202 len = max_discard_blocks;
1207 if (*issued == dpolicy->max_requests)
1212 if (time_to_inject(sbi, FAULT_DISCARD)) {
1213 f2fs_show_injection_info(sbi, FAULT_DISCARD);
1217 err = __blkdev_issue_discard(bdev,
1218 SECTOR_FROM_BLOCK(start),
1219 SECTOR_FROM_BLOCK(len),
1223 spin_lock_irqsave(&dc->lock, flags);
1224 if (dc->state == D_PARTIAL)
1225 dc->state = D_SUBMIT;
1226 spin_unlock_irqrestore(&dc->lock, flags);
1231 f2fs_bug_on(sbi, !bio);
1234 * should keep before submission to avoid D_DONE
1237 spin_lock_irqsave(&dc->lock, flags);
1239 dc->state = D_SUBMIT;
1241 dc->state = D_PARTIAL;
1243 spin_unlock_irqrestore(&dc->lock, flags);
1245 atomic_inc(&dcc->queued_discard);
1247 list_move_tail(&dc->list, wait_list);
1249 /* sanity check on discard range */
1250 __check_sit_bitmap(sbi, lstart, lstart + len);
1252 bio->bi_private = dc;
1253 bio->bi_end_io = f2fs_submit_discard_endio;
1254 bio->bi_opf |= flag;
1257 atomic_inc(&dcc->issued_discard);
1259 f2fs_update_iostat(sbi, FS_DISCARD, 1);
1268 dcc->undiscard_blks -= len;
1269 __update_discard_tree_range(sbi, bdev, lstart, start, len);
1274 static void __insert_discard_tree(struct f2fs_sb_info *sbi,
1275 struct block_device *bdev, block_t lstart,
1276 block_t start, block_t len,
1277 struct rb_node **insert_p,
1278 struct rb_node *insert_parent)
1280 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1282 struct rb_node *parent = NULL;
1283 bool leftmost = true;
1285 if (insert_p && insert_parent) {
1286 parent = insert_parent;
1291 p = f2fs_lookup_rb_tree_for_insert(sbi, &dcc->root, &parent,
1294 __attach_discard_cmd(sbi, bdev, lstart, start, len, parent,
1298 static void __relocate_discard_cmd(struct discard_cmd_control *dcc,
1299 struct discard_cmd *dc)
1301 list_move_tail(&dc->list, &dcc->pend_list[plist_idx(dc->len)]);
1304 static void __punch_discard_cmd(struct f2fs_sb_info *sbi,
1305 struct discard_cmd *dc, block_t blkaddr)
1307 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1308 struct discard_info di = dc->di;
1309 bool modified = false;
1311 if (dc->state == D_DONE || dc->len == 1) {
1312 __remove_discard_cmd(sbi, dc);
1316 dcc->undiscard_blks -= di.len;
1318 if (blkaddr > di.lstart) {
1319 dc->len = blkaddr - dc->lstart;
1320 dcc->undiscard_blks += dc->len;
1321 __relocate_discard_cmd(dcc, dc);
1325 if (blkaddr < di.lstart + di.len - 1) {
1327 __insert_discard_tree(sbi, dc->bdev, blkaddr + 1,
1328 di.start + blkaddr + 1 - di.lstart,
1329 di.lstart + di.len - 1 - blkaddr,
1335 dcc->undiscard_blks += dc->len;
1336 __relocate_discard_cmd(dcc, dc);
1341 static void __update_discard_tree_range(struct f2fs_sb_info *sbi,
1342 struct block_device *bdev, block_t lstart,
1343 block_t start, block_t len)
1345 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1346 struct discard_cmd *prev_dc = NULL, *next_dc = NULL;
1347 struct discard_cmd *dc;
1348 struct discard_info di = {0};
1349 struct rb_node **insert_p = NULL, *insert_parent = NULL;
1350 struct request_queue *q = bdev_get_queue(bdev);
1351 unsigned int max_discard_blocks =
1352 SECTOR_TO_BLOCK(q->limits.max_discard_sectors);
1353 block_t end = lstart + len;
1355 dc = (struct discard_cmd *)f2fs_lookup_rb_tree_ret(&dcc->root,
1357 (struct rb_entry **)&prev_dc,
1358 (struct rb_entry **)&next_dc,
1359 &insert_p, &insert_parent, true, NULL);
1365 di.len = next_dc ? next_dc->lstart - lstart : len;
1366 di.len = min(di.len, len);
1371 struct rb_node *node;
1372 bool merged = false;
1373 struct discard_cmd *tdc = NULL;
1376 di.lstart = prev_dc->lstart + prev_dc->len;
1377 if (di.lstart < lstart)
1379 if (di.lstart >= end)
1382 if (!next_dc || next_dc->lstart > end)
1383 di.len = end - di.lstart;
1385 di.len = next_dc->lstart - di.lstart;
1386 di.start = start + di.lstart - lstart;
1392 if (prev_dc && prev_dc->state == D_PREP &&
1393 prev_dc->bdev == bdev &&
1394 __is_discard_back_mergeable(&di, &prev_dc->di,
1395 max_discard_blocks)) {
1396 prev_dc->di.len += di.len;
1397 dcc->undiscard_blks += di.len;
1398 __relocate_discard_cmd(dcc, prev_dc);
1404 if (next_dc && next_dc->state == D_PREP &&
1405 next_dc->bdev == bdev &&
1406 __is_discard_front_mergeable(&di, &next_dc->di,
1407 max_discard_blocks)) {
1408 next_dc->di.lstart = di.lstart;
1409 next_dc->di.len += di.len;
1410 next_dc->di.start = di.start;
1411 dcc->undiscard_blks += di.len;
1412 __relocate_discard_cmd(dcc, next_dc);
1414 __remove_discard_cmd(sbi, tdc);
1419 __insert_discard_tree(sbi, bdev, di.lstart, di.start,
1420 di.len, NULL, NULL);
1427 node = rb_next(&prev_dc->rb_node);
1428 next_dc = rb_entry_safe(node, struct discard_cmd, rb_node);
1432 static int __queue_discard_cmd(struct f2fs_sb_info *sbi,
1433 struct block_device *bdev, block_t blkstart, block_t blklen)
1435 block_t lblkstart = blkstart;
1437 if (!f2fs_bdev_support_discard(bdev))
1440 trace_f2fs_queue_discard(bdev, blkstart, blklen);
1442 if (f2fs_is_multi_device(sbi)) {
1443 int devi = f2fs_target_device_index(sbi, blkstart);
1445 blkstart -= FDEV(devi).start_blk;
1447 mutex_lock(&SM_I(sbi)->dcc_info->cmd_lock);
1448 __update_discard_tree_range(sbi, bdev, lblkstart, blkstart, blklen);
1449 mutex_unlock(&SM_I(sbi)->dcc_info->cmd_lock);
1453 static unsigned int __issue_discard_cmd_orderly(struct f2fs_sb_info *sbi,
1454 struct discard_policy *dpolicy)
1456 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1457 struct discard_cmd *prev_dc = NULL, *next_dc = NULL;
1458 struct rb_node **insert_p = NULL, *insert_parent = NULL;
1459 struct discard_cmd *dc;
1460 struct blk_plug plug;
1461 unsigned int pos = dcc->next_pos;
1462 unsigned int issued = 0;
1463 bool io_interrupted = false;
1465 mutex_lock(&dcc->cmd_lock);
1466 dc = (struct discard_cmd *)f2fs_lookup_rb_tree_ret(&dcc->root,
1468 (struct rb_entry **)&prev_dc,
1469 (struct rb_entry **)&next_dc,
1470 &insert_p, &insert_parent, true, NULL);
1474 blk_start_plug(&plug);
1477 struct rb_node *node;
1480 if (dc->state != D_PREP)
1483 if (dpolicy->io_aware && !is_idle(sbi, DISCARD_TIME)) {
1484 io_interrupted = true;
1488 dcc->next_pos = dc->lstart + dc->len;
1489 err = __submit_discard_cmd(sbi, dpolicy, dc, &issued);
1491 if (issued >= dpolicy->max_requests)
1494 node = rb_next(&dc->rb_node);
1496 __remove_discard_cmd(sbi, dc);
1497 dc = rb_entry_safe(node, struct discard_cmd, rb_node);
1500 blk_finish_plug(&plug);
1505 mutex_unlock(&dcc->cmd_lock);
1507 if (!issued && io_interrupted)
1512 static unsigned int __wait_all_discard_cmd(struct f2fs_sb_info *sbi,
1513 struct discard_policy *dpolicy);
1515 static int __issue_discard_cmd(struct f2fs_sb_info *sbi,
1516 struct discard_policy *dpolicy)
1518 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1519 struct list_head *pend_list;
1520 struct discard_cmd *dc, *tmp;
1521 struct blk_plug plug;
1523 bool io_interrupted = false;
1525 if (dpolicy->timeout)
1526 f2fs_update_time(sbi, UMOUNT_DISCARD_TIMEOUT);
1530 for (i = MAX_PLIST_NUM - 1; i >= 0; i--) {
1531 if (dpolicy->timeout &&
1532 f2fs_time_over(sbi, UMOUNT_DISCARD_TIMEOUT))
1535 if (i + 1 < dpolicy->granularity)
1538 if (i < DEFAULT_DISCARD_GRANULARITY && dpolicy->ordered)
1539 return __issue_discard_cmd_orderly(sbi, dpolicy);
1541 pend_list = &dcc->pend_list[i];
1543 mutex_lock(&dcc->cmd_lock);
1544 if (list_empty(pend_list))
1546 if (unlikely(dcc->rbtree_check))
1547 f2fs_bug_on(sbi, !f2fs_check_rb_tree_consistence(sbi,
1548 &dcc->root, false));
1549 blk_start_plug(&plug);
1550 list_for_each_entry_safe(dc, tmp, pend_list, list) {
1551 f2fs_bug_on(sbi, dc->state != D_PREP);
1553 if (dpolicy->timeout &&
1554 f2fs_time_over(sbi, UMOUNT_DISCARD_TIMEOUT))
1557 if (dpolicy->io_aware && i < dpolicy->io_aware_gran &&
1558 !is_idle(sbi, DISCARD_TIME)) {
1559 io_interrupted = true;
1563 __submit_discard_cmd(sbi, dpolicy, dc, &issued);
1565 if (issued >= dpolicy->max_requests)
1568 blk_finish_plug(&plug);
1570 mutex_unlock(&dcc->cmd_lock);
1572 if (issued >= dpolicy->max_requests || io_interrupted)
1576 if (dpolicy->type == DPOLICY_UMOUNT && issued) {
1577 __wait_all_discard_cmd(sbi, dpolicy);
1581 if (!issued && io_interrupted)
1587 static bool __drop_discard_cmd(struct f2fs_sb_info *sbi)
1589 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1590 struct list_head *pend_list;
1591 struct discard_cmd *dc, *tmp;
1593 bool dropped = false;
1595 mutex_lock(&dcc->cmd_lock);
1596 for (i = MAX_PLIST_NUM - 1; i >= 0; i--) {
1597 pend_list = &dcc->pend_list[i];
1598 list_for_each_entry_safe(dc, tmp, pend_list, list) {
1599 f2fs_bug_on(sbi, dc->state != D_PREP);
1600 __remove_discard_cmd(sbi, dc);
1604 mutex_unlock(&dcc->cmd_lock);
1609 void f2fs_drop_discard_cmd(struct f2fs_sb_info *sbi)
1611 __drop_discard_cmd(sbi);
1614 static unsigned int __wait_one_discard_bio(struct f2fs_sb_info *sbi,
1615 struct discard_cmd *dc)
1617 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1618 unsigned int len = 0;
1620 wait_for_completion_io(&dc->wait);
1621 mutex_lock(&dcc->cmd_lock);
1622 f2fs_bug_on(sbi, dc->state != D_DONE);
1627 __remove_discard_cmd(sbi, dc);
1629 mutex_unlock(&dcc->cmd_lock);
1634 static unsigned int __wait_discard_cmd_range(struct f2fs_sb_info *sbi,
1635 struct discard_policy *dpolicy,
1636 block_t start, block_t end)
1638 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1639 struct list_head *wait_list = (dpolicy->type == DPOLICY_FSTRIM) ?
1640 &(dcc->fstrim_list) : &(dcc->wait_list);
1641 struct discard_cmd *dc, *tmp;
1643 unsigned int trimmed = 0;
1648 mutex_lock(&dcc->cmd_lock);
1649 list_for_each_entry_safe(dc, tmp, wait_list, list) {
1650 if (dc->lstart + dc->len <= start || end <= dc->lstart)
1652 if (dc->len < dpolicy->granularity)
1654 if (dc->state == D_DONE && !dc->ref) {
1655 wait_for_completion_io(&dc->wait);
1658 __remove_discard_cmd(sbi, dc);
1665 mutex_unlock(&dcc->cmd_lock);
1668 trimmed += __wait_one_discard_bio(sbi, dc);
1675 static unsigned int __wait_all_discard_cmd(struct f2fs_sb_info *sbi,
1676 struct discard_policy *dpolicy)
1678 struct discard_policy dp;
1679 unsigned int discard_blks;
1682 return __wait_discard_cmd_range(sbi, dpolicy, 0, UINT_MAX);
1685 __init_discard_policy(sbi, &dp, DPOLICY_FSTRIM, 1);
1686 discard_blks = __wait_discard_cmd_range(sbi, &dp, 0, UINT_MAX);
1687 __init_discard_policy(sbi, &dp, DPOLICY_UMOUNT, 1);
1688 discard_blks += __wait_discard_cmd_range(sbi, &dp, 0, UINT_MAX);
1690 return discard_blks;
1693 /* This should be covered by global mutex, &sit_i->sentry_lock */
1694 static void f2fs_wait_discard_bio(struct f2fs_sb_info *sbi, block_t blkaddr)
1696 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1697 struct discard_cmd *dc;
1698 bool need_wait = false;
1700 mutex_lock(&dcc->cmd_lock);
1701 dc = (struct discard_cmd *)f2fs_lookup_rb_tree(&dcc->root,
1704 if (dc->state == D_PREP) {
1705 __punch_discard_cmd(sbi, dc, blkaddr);
1711 mutex_unlock(&dcc->cmd_lock);
1714 __wait_one_discard_bio(sbi, dc);
1717 void f2fs_stop_discard_thread(struct f2fs_sb_info *sbi)
1719 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1721 if (dcc && dcc->f2fs_issue_discard) {
1722 struct task_struct *discard_thread = dcc->f2fs_issue_discard;
1724 dcc->f2fs_issue_discard = NULL;
1725 kthread_stop(discard_thread);
1729 /* This comes from f2fs_put_super */
1730 bool f2fs_issue_discard_timeout(struct f2fs_sb_info *sbi)
1732 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1733 struct discard_policy dpolicy;
1736 __init_discard_policy(sbi, &dpolicy, DPOLICY_UMOUNT,
1737 dcc->discard_granularity);
1738 __issue_discard_cmd(sbi, &dpolicy);
1739 dropped = __drop_discard_cmd(sbi);
1741 /* just to make sure there is no pending discard commands */
1742 __wait_all_discard_cmd(sbi, NULL);
1744 f2fs_bug_on(sbi, atomic_read(&dcc->discard_cmd_cnt));
1748 static int issue_discard_thread(void *data)
1750 struct f2fs_sb_info *sbi = data;
1751 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1752 wait_queue_head_t *q = &dcc->discard_wait_queue;
1753 struct discard_policy dpolicy;
1754 unsigned int wait_ms = DEF_MIN_DISCARD_ISSUE_TIME;
1760 if (sbi->gc_mode == GC_URGENT_HIGH ||
1761 !f2fs_available_free_memory(sbi, DISCARD_CACHE))
1762 __init_discard_policy(sbi, &dpolicy, DPOLICY_FORCE, 1);
1764 __init_discard_policy(sbi, &dpolicy, DPOLICY_BG,
1765 dcc->discard_granularity);
1767 if (!atomic_read(&dcc->discard_cmd_cnt))
1768 wait_ms = dpolicy.max_interval;
1770 wait_event_interruptible_timeout(*q,
1771 kthread_should_stop() || freezing(current) ||
1773 msecs_to_jiffies(wait_ms));
1775 if (dcc->discard_wake)
1776 dcc->discard_wake = 0;
1778 /* clean up pending candidates before going to sleep */
1779 if (atomic_read(&dcc->queued_discard))
1780 __wait_all_discard_cmd(sbi, NULL);
1782 if (try_to_freeze())
1784 if (f2fs_readonly(sbi->sb))
1786 if (kthread_should_stop())
1788 if (is_sbi_flag_set(sbi, SBI_NEED_FSCK)) {
1789 wait_ms = dpolicy.max_interval;
1792 if (!atomic_read(&dcc->discard_cmd_cnt))
1795 sb_start_intwrite(sbi->sb);
1797 issued = __issue_discard_cmd(sbi, &dpolicy);
1799 __wait_all_discard_cmd(sbi, &dpolicy);
1800 wait_ms = dpolicy.min_interval;
1801 } else if (issued == -1) {
1802 wait_ms = f2fs_time_to_wait(sbi, DISCARD_TIME);
1804 wait_ms = dpolicy.mid_interval;
1806 wait_ms = dpolicy.max_interval;
1809 sb_end_intwrite(sbi->sb);
1811 } while (!kthread_should_stop());
1815 #ifdef CONFIG_BLK_DEV_ZONED
1816 static int __f2fs_issue_discard_zone(struct f2fs_sb_info *sbi,
1817 struct block_device *bdev, block_t blkstart, block_t blklen)
1819 sector_t sector, nr_sects;
1820 block_t lblkstart = blkstart;
1823 if (f2fs_is_multi_device(sbi)) {
1824 devi = f2fs_target_device_index(sbi, blkstart);
1825 if (blkstart < FDEV(devi).start_blk ||
1826 blkstart > FDEV(devi).end_blk) {
1827 f2fs_err(sbi, "Invalid block %x", blkstart);
1830 blkstart -= FDEV(devi).start_blk;
1833 /* For sequential zones, reset the zone write pointer */
1834 if (f2fs_blkz_is_seq(sbi, devi, blkstart)) {
1835 sector = SECTOR_FROM_BLOCK(blkstart);
1836 nr_sects = SECTOR_FROM_BLOCK(blklen);
1838 if (sector & (bdev_zone_sectors(bdev) - 1) ||
1839 nr_sects != bdev_zone_sectors(bdev)) {
1840 f2fs_err(sbi, "(%d) %s: Unaligned zone reset attempted (block %x + %x)",
1841 devi, sbi->s_ndevs ? FDEV(devi).path : "",
1845 trace_f2fs_issue_reset_zone(bdev, blkstart);
1846 return blkdev_zone_mgmt(bdev, REQ_OP_ZONE_RESET,
1847 sector, nr_sects, GFP_NOFS);
1850 /* For conventional zones, use regular discard if supported */
1851 return __queue_discard_cmd(sbi, bdev, lblkstart, blklen);
1855 static int __issue_discard_async(struct f2fs_sb_info *sbi,
1856 struct block_device *bdev, block_t blkstart, block_t blklen)
1858 #ifdef CONFIG_BLK_DEV_ZONED
1859 if (f2fs_sb_has_blkzoned(sbi) && bdev_is_zoned(bdev))
1860 return __f2fs_issue_discard_zone(sbi, bdev, blkstart, blklen);
1862 return __queue_discard_cmd(sbi, bdev, blkstart, blklen);
1865 static int f2fs_issue_discard(struct f2fs_sb_info *sbi,
1866 block_t blkstart, block_t blklen)
1868 sector_t start = blkstart, len = 0;
1869 struct block_device *bdev;
1870 struct seg_entry *se;
1871 unsigned int offset;
1875 bdev = f2fs_target_device(sbi, blkstart, NULL);
1877 for (i = blkstart; i < blkstart + blklen; i++, len++) {
1879 struct block_device *bdev2 =
1880 f2fs_target_device(sbi, i, NULL);
1882 if (bdev2 != bdev) {
1883 err = __issue_discard_async(sbi, bdev,
1893 se = get_seg_entry(sbi, GET_SEGNO(sbi, i));
1894 offset = GET_BLKOFF_FROM_SEG0(sbi, i);
1896 if (!f2fs_test_and_set_bit(offset, se->discard_map))
1897 sbi->discard_blks--;
1901 err = __issue_discard_async(sbi, bdev, start, len);
1905 static bool add_discard_addrs(struct f2fs_sb_info *sbi, struct cp_control *cpc,
1908 int entries = SIT_VBLOCK_MAP_SIZE / sizeof(unsigned long);
1909 int max_blocks = sbi->blocks_per_seg;
1910 struct seg_entry *se = get_seg_entry(sbi, cpc->trim_start);
1911 unsigned long *cur_map = (unsigned long *)se->cur_valid_map;
1912 unsigned long *ckpt_map = (unsigned long *)se->ckpt_valid_map;
1913 unsigned long *discard_map = (unsigned long *)se->discard_map;
1914 unsigned long *dmap = SIT_I(sbi)->tmp_map;
1915 unsigned int start = 0, end = -1;
1916 bool force = (cpc->reason & CP_DISCARD);
1917 struct discard_entry *de = NULL;
1918 struct list_head *head = &SM_I(sbi)->dcc_info->entry_list;
1921 if (se->valid_blocks == max_blocks || !f2fs_hw_support_discard(sbi))
1925 if (!f2fs_realtime_discard_enable(sbi) || !se->valid_blocks ||
1926 SM_I(sbi)->dcc_info->nr_discards >=
1927 SM_I(sbi)->dcc_info->max_discards)
1931 /* SIT_VBLOCK_MAP_SIZE should be multiple of sizeof(unsigned long) */
1932 for (i = 0; i < entries; i++)
1933 dmap[i] = force ? ~ckpt_map[i] & ~discard_map[i] :
1934 (cur_map[i] ^ ckpt_map[i]) & ckpt_map[i];
1936 while (force || SM_I(sbi)->dcc_info->nr_discards <=
1937 SM_I(sbi)->dcc_info->max_discards) {
1938 start = __find_rev_next_bit(dmap, max_blocks, end + 1);
1939 if (start >= max_blocks)
1942 end = __find_rev_next_zero_bit(dmap, max_blocks, start + 1);
1943 if (force && start && end != max_blocks
1944 && (end - start) < cpc->trim_minlen)
1951 de = f2fs_kmem_cache_alloc(discard_entry_slab,
1953 de->start_blkaddr = START_BLOCK(sbi, cpc->trim_start);
1954 list_add_tail(&de->list, head);
1957 for (i = start; i < end; i++)
1958 __set_bit_le(i, (void *)de->discard_map);
1960 SM_I(sbi)->dcc_info->nr_discards += end - start;
1965 static void release_discard_addr(struct discard_entry *entry)
1967 list_del(&entry->list);
1968 kmem_cache_free(discard_entry_slab, entry);
1971 void f2fs_release_discard_addrs(struct f2fs_sb_info *sbi)
1973 struct list_head *head = &(SM_I(sbi)->dcc_info->entry_list);
1974 struct discard_entry *entry, *this;
1977 list_for_each_entry_safe(entry, this, head, list)
1978 release_discard_addr(entry);
1982 * Should call f2fs_clear_prefree_segments after checkpoint is done.
1984 static void set_prefree_as_free_segments(struct f2fs_sb_info *sbi)
1986 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
1989 mutex_lock(&dirty_i->seglist_lock);
1990 for_each_set_bit(segno, dirty_i->dirty_segmap[PRE], MAIN_SEGS(sbi))
1991 __set_test_and_free(sbi, segno, false);
1992 mutex_unlock(&dirty_i->seglist_lock);
1995 void f2fs_clear_prefree_segments(struct f2fs_sb_info *sbi,
1996 struct cp_control *cpc)
1998 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1999 struct list_head *head = &dcc->entry_list;
2000 struct discard_entry *entry, *this;
2001 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
2002 unsigned long *prefree_map = dirty_i->dirty_segmap[PRE];
2003 unsigned int start = 0, end = -1;
2004 unsigned int secno, start_segno;
2005 bool force = (cpc->reason & CP_DISCARD);
2006 bool need_align = f2fs_lfs_mode(sbi) && __is_large_section(sbi);
2008 mutex_lock(&dirty_i->seglist_lock);
2013 if (need_align && end != -1)
2015 start = find_next_bit(prefree_map, MAIN_SEGS(sbi), end + 1);
2016 if (start >= MAIN_SEGS(sbi))
2018 end = find_next_zero_bit(prefree_map, MAIN_SEGS(sbi),
2022 start = rounddown(start, sbi->segs_per_sec);
2023 end = roundup(end, sbi->segs_per_sec);
2026 for (i = start; i < end; i++) {
2027 if (test_and_clear_bit(i, prefree_map))
2028 dirty_i->nr_dirty[PRE]--;
2031 if (!f2fs_realtime_discard_enable(sbi))
2034 if (force && start >= cpc->trim_start &&
2035 (end - 1) <= cpc->trim_end)
2038 if (!f2fs_lfs_mode(sbi) || !__is_large_section(sbi)) {
2039 f2fs_issue_discard(sbi, START_BLOCK(sbi, start),
2040 (end - start) << sbi->log_blocks_per_seg);
2044 secno = GET_SEC_FROM_SEG(sbi, start);
2045 start_segno = GET_SEG_FROM_SEC(sbi, secno);
2046 if (!IS_CURSEC(sbi, secno) &&
2047 !get_valid_blocks(sbi, start, true))
2048 f2fs_issue_discard(sbi, START_BLOCK(sbi, start_segno),
2049 sbi->segs_per_sec << sbi->log_blocks_per_seg);
2051 start = start_segno + sbi->segs_per_sec;
2057 mutex_unlock(&dirty_i->seglist_lock);
2059 /* send small discards */
2060 list_for_each_entry_safe(entry, this, head, list) {
2061 unsigned int cur_pos = 0, next_pos, len, total_len = 0;
2062 bool is_valid = test_bit_le(0, entry->discard_map);
2066 next_pos = find_next_zero_bit_le(entry->discard_map,
2067 sbi->blocks_per_seg, cur_pos);
2068 len = next_pos - cur_pos;
2070 if (f2fs_sb_has_blkzoned(sbi) ||
2071 (force && len < cpc->trim_minlen))
2074 f2fs_issue_discard(sbi, entry->start_blkaddr + cur_pos,
2078 next_pos = find_next_bit_le(entry->discard_map,
2079 sbi->blocks_per_seg, cur_pos);
2083 is_valid = !is_valid;
2085 if (cur_pos < sbi->blocks_per_seg)
2088 release_discard_addr(entry);
2089 dcc->nr_discards -= total_len;
2092 wake_up_discard_thread(sbi, false);
2095 static int create_discard_cmd_control(struct f2fs_sb_info *sbi)
2097 dev_t dev = sbi->sb->s_bdev->bd_dev;
2098 struct discard_cmd_control *dcc;
2101 if (SM_I(sbi)->dcc_info) {
2102 dcc = SM_I(sbi)->dcc_info;
2106 dcc = f2fs_kzalloc(sbi, sizeof(struct discard_cmd_control), GFP_KERNEL);
2110 dcc->discard_granularity = DEFAULT_DISCARD_GRANULARITY;
2111 INIT_LIST_HEAD(&dcc->entry_list);
2112 for (i = 0; i < MAX_PLIST_NUM; i++)
2113 INIT_LIST_HEAD(&dcc->pend_list[i]);
2114 INIT_LIST_HEAD(&dcc->wait_list);
2115 INIT_LIST_HEAD(&dcc->fstrim_list);
2116 mutex_init(&dcc->cmd_lock);
2117 atomic_set(&dcc->issued_discard, 0);
2118 atomic_set(&dcc->queued_discard, 0);
2119 atomic_set(&dcc->discard_cmd_cnt, 0);
2120 dcc->nr_discards = 0;
2121 dcc->max_discards = MAIN_SEGS(sbi) << sbi->log_blocks_per_seg;
2122 dcc->undiscard_blks = 0;
2124 dcc->root = RB_ROOT_CACHED;
2125 dcc->rbtree_check = false;
2127 init_waitqueue_head(&dcc->discard_wait_queue);
2128 SM_I(sbi)->dcc_info = dcc;
2130 dcc->f2fs_issue_discard = kthread_run(issue_discard_thread, sbi,
2131 "f2fs_discard-%u:%u", MAJOR(dev), MINOR(dev));
2132 if (IS_ERR(dcc->f2fs_issue_discard)) {
2133 err = PTR_ERR(dcc->f2fs_issue_discard);
2135 SM_I(sbi)->dcc_info = NULL;
2142 static void destroy_discard_cmd_control(struct f2fs_sb_info *sbi)
2144 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
2149 f2fs_stop_discard_thread(sbi);
2152 * Recovery can cache discard commands, so in error path of
2153 * fill_super(), it needs to give a chance to handle them.
2155 if (unlikely(atomic_read(&dcc->discard_cmd_cnt)))
2156 f2fs_issue_discard_timeout(sbi);
2159 SM_I(sbi)->dcc_info = NULL;
2162 static bool __mark_sit_entry_dirty(struct f2fs_sb_info *sbi, unsigned int segno)
2164 struct sit_info *sit_i = SIT_I(sbi);
2166 if (!__test_and_set_bit(segno, sit_i->dirty_sentries_bitmap)) {
2167 sit_i->dirty_sentries++;
2174 static void __set_sit_entry_type(struct f2fs_sb_info *sbi, int type,
2175 unsigned int segno, int modified)
2177 struct seg_entry *se = get_seg_entry(sbi, segno);
2181 __mark_sit_entry_dirty(sbi, segno);
2184 static inline unsigned long long get_segment_mtime(struct f2fs_sb_info *sbi,
2187 unsigned int segno = GET_SEGNO(sbi, blkaddr);
2189 if (segno == NULL_SEGNO)
2191 return get_seg_entry(sbi, segno)->mtime;
2194 static void update_segment_mtime(struct f2fs_sb_info *sbi, block_t blkaddr,
2195 unsigned long long old_mtime)
2197 struct seg_entry *se;
2198 unsigned int segno = GET_SEGNO(sbi, blkaddr);
2199 unsigned long long ctime = get_mtime(sbi, false);
2200 unsigned long long mtime = old_mtime ? old_mtime : ctime;
2202 if (segno == NULL_SEGNO)
2205 se = get_seg_entry(sbi, segno);
2210 se->mtime = div_u64(se->mtime * se->valid_blocks + mtime,
2211 se->valid_blocks + 1);
2213 if (ctime > SIT_I(sbi)->max_mtime)
2214 SIT_I(sbi)->max_mtime = ctime;
2217 static void update_sit_entry(struct f2fs_sb_info *sbi, block_t blkaddr, int del)
2219 struct seg_entry *se;
2220 unsigned int segno, offset;
2221 long int new_vblocks;
2223 #ifdef CONFIG_F2FS_CHECK_FS
2227 segno = GET_SEGNO(sbi, blkaddr);
2229 se = get_seg_entry(sbi, segno);
2230 new_vblocks = se->valid_blocks + del;
2231 offset = GET_BLKOFF_FROM_SEG0(sbi, blkaddr);
2233 f2fs_bug_on(sbi, (new_vblocks < 0 ||
2234 (new_vblocks > f2fs_usable_blks_in_seg(sbi, segno))));
2236 se->valid_blocks = new_vblocks;
2238 /* Update valid block bitmap */
2240 exist = f2fs_test_and_set_bit(offset, se->cur_valid_map);
2241 #ifdef CONFIG_F2FS_CHECK_FS
2242 mir_exist = f2fs_test_and_set_bit(offset,
2243 se->cur_valid_map_mir);
2244 if (unlikely(exist != mir_exist)) {
2245 f2fs_err(sbi, "Inconsistent error when setting bitmap, blk:%u, old bit:%d",
2247 f2fs_bug_on(sbi, 1);
2250 if (unlikely(exist)) {
2251 f2fs_err(sbi, "Bitmap was wrongly set, blk:%u",
2253 f2fs_bug_on(sbi, 1);
2258 if (!f2fs_test_and_set_bit(offset, se->discard_map))
2259 sbi->discard_blks--;
2262 * SSR should never reuse block which is checkpointed
2263 * or newly invalidated.
2265 if (!is_sbi_flag_set(sbi, SBI_CP_DISABLED)) {
2266 if (!f2fs_test_and_set_bit(offset, se->ckpt_valid_map))
2267 se->ckpt_valid_blocks++;
2270 exist = f2fs_test_and_clear_bit(offset, se->cur_valid_map);
2271 #ifdef CONFIG_F2FS_CHECK_FS
2272 mir_exist = f2fs_test_and_clear_bit(offset,
2273 se->cur_valid_map_mir);
2274 if (unlikely(exist != mir_exist)) {
2275 f2fs_err(sbi, "Inconsistent error when clearing bitmap, blk:%u, old bit:%d",
2277 f2fs_bug_on(sbi, 1);
2280 if (unlikely(!exist)) {
2281 f2fs_err(sbi, "Bitmap was wrongly cleared, blk:%u",
2283 f2fs_bug_on(sbi, 1);
2286 } else if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
2288 * If checkpoints are off, we must not reuse data that
2289 * was used in the previous checkpoint. If it was used
2290 * before, we must track that to know how much space we
2293 if (f2fs_test_bit(offset, se->ckpt_valid_map)) {
2294 spin_lock(&sbi->stat_lock);
2295 sbi->unusable_block_count++;
2296 spin_unlock(&sbi->stat_lock);
2300 if (f2fs_test_and_clear_bit(offset, se->discard_map))
2301 sbi->discard_blks++;
2303 if (!f2fs_test_bit(offset, se->ckpt_valid_map))
2304 se->ckpt_valid_blocks += del;
2306 __mark_sit_entry_dirty(sbi, segno);
2308 /* update total number of valid blocks to be written in ckpt area */
2309 SIT_I(sbi)->written_valid_blocks += del;
2311 if (__is_large_section(sbi))
2312 get_sec_entry(sbi, segno)->valid_blocks += del;
2315 void f2fs_invalidate_blocks(struct f2fs_sb_info *sbi, block_t addr)
2317 unsigned int segno = GET_SEGNO(sbi, addr);
2318 struct sit_info *sit_i = SIT_I(sbi);
2320 f2fs_bug_on(sbi, addr == NULL_ADDR);
2321 if (addr == NEW_ADDR || addr == COMPRESS_ADDR)
2324 invalidate_mapping_pages(META_MAPPING(sbi), addr, addr);
2325 f2fs_invalidate_compress_page(sbi, addr);
2327 /* add it into sit main buffer */
2328 down_write(&sit_i->sentry_lock);
2330 update_segment_mtime(sbi, addr, 0);
2331 update_sit_entry(sbi, addr, -1);
2333 /* add it into dirty seglist */
2334 locate_dirty_segment(sbi, segno);
2336 up_write(&sit_i->sentry_lock);
2339 bool f2fs_is_checkpointed_data(struct f2fs_sb_info *sbi, block_t blkaddr)
2341 struct sit_info *sit_i = SIT_I(sbi);
2342 unsigned int segno, offset;
2343 struct seg_entry *se;
2346 if (!__is_valid_data_blkaddr(blkaddr))
2349 down_read(&sit_i->sentry_lock);
2351 segno = GET_SEGNO(sbi, blkaddr);
2352 se = get_seg_entry(sbi, segno);
2353 offset = GET_BLKOFF_FROM_SEG0(sbi, blkaddr);
2355 if (f2fs_test_bit(offset, se->ckpt_valid_map))
2358 up_read(&sit_i->sentry_lock);
2364 * This function should be resided under the curseg_mutex lock
2366 static void __add_sum_entry(struct f2fs_sb_info *sbi, int type,
2367 struct f2fs_summary *sum)
2369 struct curseg_info *curseg = CURSEG_I(sbi, type);
2370 void *addr = curseg->sum_blk;
2372 addr += curseg->next_blkoff * sizeof(struct f2fs_summary);
2373 memcpy(addr, sum, sizeof(struct f2fs_summary));
2377 * Calculate the number of current summary pages for writing
2379 int f2fs_npages_for_summary_flush(struct f2fs_sb_info *sbi, bool for_ra)
2381 int valid_sum_count = 0;
2384 for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) {
2385 if (sbi->ckpt->alloc_type[i] == SSR)
2386 valid_sum_count += sbi->blocks_per_seg;
2389 valid_sum_count += le16_to_cpu(
2390 F2FS_CKPT(sbi)->cur_data_blkoff[i]);
2392 valid_sum_count += curseg_blkoff(sbi, i);
2396 sum_in_page = (PAGE_SIZE - 2 * SUM_JOURNAL_SIZE -
2397 SUM_FOOTER_SIZE) / SUMMARY_SIZE;
2398 if (valid_sum_count <= sum_in_page)
2400 else if ((valid_sum_count - sum_in_page) <=
2401 (PAGE_SIZE - SUM_FOOTER_SIZE) / SUMMARY_SIZE)
2407 * Caller should put this summary page
2409 struct page *f2fs_get_sum_page(struct f2fs_sb_info *sbi, unsigned int segno)
2411 if (unlikely(f2fs_cp_error(sbi)))
2412 return ERR_PTR(-EIO);
2413 return f2fs_get_meta_page_retry(sbi, GET_SUM_BLOCK(sbi, segno));
2416 void f2fs_update_meta_page(struct f2fs_sb_info *sbi,
2417 void *src, block_t blk_addr)
2419 struct page *page = f2fs_grab_meta_page(sbi, blk_addr);
2421 memcpy(page_address(page), src, PAGE_SIZE);
2422 set_page_dirty(page);
2423 f2fs_put_page(page, 1);
2426 static void write_sum_page(struct f2fs_sb_info *sbi,
2427 struct f2fs_summary_block *sum_blk, block_t blk_addr)
2429 f2fs_update_meta_page(sbi, (void *)sum_blk, blk_addr);
2432 static void write_current_sum_page(struct f2fs_sb_info *sbi,
2433 int type, block_t blk_addr)
2435 struct curseg_info *curseg = CURSEG_I(sbi, type);
2436 struct page *page = f2fs_grab_meta_page(sbi, blk_addr);
2437 struct f2fs_summary_block *src = curseg->sum_blk;
2438 struct f2fs_summary_block *dst;
2440 dst = (struct f2fs_summary_block *)page_address(page);
2441 memset(dst, 0, PAGE_SIZE);
2443 mutex_lock(&curseg->curseg_mutex);
2445 down_read(&curseg->journal_rwsem);
2446 memcpy(&dst->journal, curseg->journal, SUM_JOURNAL_SIZE);
2447 up_read(&curseg->journal_rwsem);
2449 memcpy(dst->entries, src->entries, SUM_ENTRY_SIZE);
2450 memcpy(&dst->footer, &src->footer, SUM_FOOTER_SIZE);
2452 mutex_unlock(&curseg->curseg_mutex);
2454 set_page_dirty(page);
2455 f2fs_put_page(page, 1);
2458 static int is_next_segment_free(struct f2fs_sb_info *sbi,
2459 struct curseg_info *curseg, int type)
2461 unsigned int segno = curseg->segno + 1;
2462 struct free_segmap_info *free_i = FREE_I(sbi);
2464 if (segno < MAIN_SEGS(sbi) && segno % sbi->segs_per_sec)
2465 return !test_bit(segno, free_i->free_segmap);
2470 * Find a new segment from the free segments bitmap to right order
2471 * This function should be returned with success, otherwise BUG
2473 static void get_new_segment(struct f2fs_sb_info *sbi,
2474 unsigned int *newseg, bool new_sec, int dir)
2476 struct free_segmap_info *free_i = FREE_I(sbi);
2477 unsigned int segno, secno, zoneno;
2478 unsigned int total_zones = MAIN_SECS(sbi) / sbi->secs_per_zone;
2479 unsigned int hint = GET_SEC_FROM_SEG(sbi, *newseg);
2480 unsigned int old_zoneno = GET_ZONE_FROM_SEG(sbi, *newseg);
2481 unsigned int left_start = hint;
2486 spin_lock(&free_i->segmap_lock);
2488 if (!new_sec && ((*newseg + 1) % sbi->segs_per_sec)) {
2489 segno = find_next_zero_bit(free_i->free_segmap,
2490 GET_SEG_FROM_SEC(sbi, hint + 1), *newseg + 1);
2491 if (segno < GET_SEG_FROM_SEC(sbi, hint + 1))
2495 secno = find_next_zero_bit(free_i->free_secmap, MAIN_SECS(sbi), hint);
2496 if (secno >= MAIN_SECS(sbi)) {
2497 if (dir == ALLOC_RIGHT) {
2498 secno = find_next_zero_bit(free_i->free_secmap,
2500 f2fs_bug_on(sbi, secno >= MAIN_SECS(sbi));
2503 left_start = hint - 1;
2509 while (test_bit(left_start, free_i->free_secmap)) {
2510 if (left_start > 0) {
2514 left_start = find_next_zero_bit(free_i->free_secmap,
2516 f2fs_bug_on(sbi, left_start >= MAIN_SECS(sbi));
2521 segno = GET_SEG_FROM_SEC(sbi, secno);
2522 zoneno = GET_ZONE_FROM_SEC(sbi, secno);
2524 /* give up on finding another zone */
2527 if (sbi->secs_per_zone == 1)
2529 if (zoneno == old_zoneno)
2531 if (dir == ALLOC_LEFT) {
2532 if (!go_left && zoneno + 1 >= total_zones)
2534 if (go_left && zoneno == 0)
2537 for (i = 0; i < NR_CURSEG_TYPE; i++)
2538 if (CURSEG_I(sbi, i)->zone == zoneno)
2541 if (i < NR_CURSEG_TYPE) {
2542 /* zone is in user, try another */
2544 hint = zoneno * sbi->secs_per_zone - 1;
2545 else if (zoneno + 1 >= total_zones)
2548 hint = (zoneno + 1) * sbi->secs_per_zone;
2550 goto find_other_zone;
2553 /* set it as dirty segment in free segmap */
2554 f2fs_bug_on(sbi, test_bit(segno, free_i->free_segmap));
2555 __set_inuse(sbi, segno);
2557 spin_unlock(&free_i->segmap_lock);
2560 static void reset_curseg(struct f2fs_sb_info *sbi, int type, int modified)
2562 struct curseg_info *curseg = CURSEG_I(sbi, type);
2563 struct summary_footer *sum_footer;
2564 unsigned short seg_type = curseg->seg_type;
2566 curseg->inited = true;
2567 curseg->segno = curseg->next_segno;
2568 curseg->zone = GET_ZONE_FROM_SEG(sbi, curseg->segno);
2569 curseg->next_blkoff = 0;
2570 curseg->next_segno = NULL_SEGNO;
2572 sum_footer = &(curseg->sum_blk->footer);
2573 memset(sum_footer, 0, sizeof(struct summary_footer));
2575 sanity_check_seg_type(sbi, seg_type);
2577 if (IS_DATASEG(seg_type))
2578 SET_SUM_TYPE(sum_footer, SUM_TYPE_DATA);
2579 if (IS_NODESEG(seg_type))
2580 SET_SUM_TYPE(sum_footer, SUM_TYPE_NODE);
2581 __set_sit_entry_type(sbi, seg_type, curseg->segno, modified);
2584 static unsigned int __get_next_segno(struct f2fs_sb_info *sbi, int type)
2586 struct curseg_info *curseg = CURSEG_I(sbi, type);
2587 unsigned short seg_type = curseg->seg_type;
2589 sanity_check_seg_type(sbi, seg_type);
2591 /* if segs_per_sec is large than 1, we need to keep original policy. */
2592 if (__is_large_section(sbi))
2593 return curseg->segno;
2595 /* inmem log may not locate on any segment after mount */
2596 if (!curseg->inited)
2599 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
2602 if (test_opt(sbi, NOHEAP) &&
2603 (seg_type == CURSEG_HOT_DATA || IS_NODESEG(seg_type)))
2606 if (SIT_I(sbi)->last_victim[ALLOC_NEXT])
2607 return SIT_I(sbi)->last_victim[ALLOC_NEXT];
2609 /* find segments from 0 to reuse freed segments */
2610 if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_REUSE)
2613 return curseg->segno;
2617 * Allocate a current working segment.
2618 * This function always allocates a free segment in LFS manner.
2620 static void new_curseg(struct f2fs_sb_info *sbi, int type, bool new_sec)
2622 struct curseg_info *curseg = CURSEG_I(sbi, type);
2623 unsigned short seg_type = curseg->seg_type;
2624 unsigned int segno = curseg->segno;
2625 int dir = ALLOC_LEFT;
2628 write_sum_page(sbi, curseg->sum_blk,
2629 GET_SUM_BLOCK(sbi, segno));
2630 if (seg_type == CURSEG_WARM_DATA || seg_type == CURSEG_COLD_DATA)
2633 if (test_opt(sbi, NOHEAP))
2636 segno = __get_next_segno(sbi, type);
2637 get_new_segment(sbi, &segno, new_sec, dir);
2638 curseg->next_segno = segno;
2639 reset_curseg(sbi, type, 1);
2640 curseg->alloc_type = LFS;
2643 static int __next_free_blkoff(struct f2fs_sb_info *sbi,
2644 int segno, block_t start)
2646 struct seg_entry *se = get_seg_entry(sbi, segno);
2647 int entries = SIT_VBLOCK_MAP_SIZE / sizeof(unsigned long);
2648 unsigned long *target_map = SIT_I(sbi)->tmp_map;
2649 unsigned long *ckpt_map = (unsigned long *)se->ckpt_valid_map;
2650 unsigned long *cur_map = (unsigned long *)se->cur_valid_map;
2653 for (i = 0; i < entries; i++)
2654 target_map[i] = ckpt_map[i] | cur_map[i];
2656 return __find_rev_next_zero_bit(target_map, sbi->blocks_per_seg, start);
2660 * If a segment is written by LFS manner, next block offset is just obtained
2661 * by increasing the current block offset. However, if a segment is written by
2662 * SSR manner, next block offset obtained by calling __next_free_blkoff
2664 static void __refresh_next_blkoff(struct f2fs_sb_info *sbi,
2665 struct curseg_info *seg)
2667 if (seg->alloc_type == SSR)
2669 __next_free_blkoff(sbi, seg->segno,
2670 seg->next_blkoff + 1);
2675 bool f2fs_segment_has_free_slot(struct f2fs_sb_info *sbi, int segno)
2677 return __next_free_blkoff(sbi, segno, 0) < sbi->blocks_per_seg;
2681 * This function always allocates a used segment(from dirty seglist) by SSR
2682 * manner, so it should recover the existing segment information of valid blocks
2684 static void change_curseg(struct f2fs_sb_info *sbi, int type, bool flush)
2686 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
2687 struct curseg_info *curseg = CURSEG_I(sbi, type);
2688 unsigned int new_segno = curseg->next_segno;
2689 struct f2fs_summary_block *sum_node;
2690 struct page *sum_page;
2693 write_sum_page(sbi, curseg->sum_blk,
2694 GET_SUM_BLOCK(sbi, curseg->segno));
2696 __set_test_and_inuse(sbi, new_segno);
2698 mutex_lock(&dirty_i->seglist_lock);
2699 __remove_dirty_segment(sbi, new_segno, PRE);
2700 __remove_dirty_segment(sbi, new_segno, DIRTY);
2701 mutex_unlock(&dirty_i->seglist_lock);
2703 reset_curseg(sbi, type, 1);
2704 curseg->alloc_type = SSR;
2705 curseg->next_blkoff = __next_free_blkoff(sbi, curseg->segno, 0);
2707 sum_page = f2fs_get_sum_page(sbi, new_segno);
2708 if (IS_ERR(sum_page)) {
2709 /* GC won't be able to use stale summary pages by cp_error */
2710 memset(curseg->sum_blk, 0, SUM_ENTRY_SIZE);
2713 sum_node = (struct f2fs_summary_block *)page_address(sum_page);
2714 memcpy(curseg->sum_blk, sum_node, SUM_ENTRY_SIZE);
2715 f2fs_put_page(sum_page, 1);
2718 static int get_ssr_segment(struct f2fs_sb_info *sbi, int type,
2719 int alloc_mode, unsigned long long age);
2721 static void get_atssr_segment(struct f2fs_sb_info *sbi, int type,
2722 int target_type, int alloc_mode,
2723 unsigned long long age)
2725 struct curseg_info *curseg = CURSEG_I(sbi, type);
2727 curseg->seg_type = target_type;
2729 if (get_ssr_segment(sbi, type, alloc_mode, age)) {
2730 struct seg_entry *se = get_seg_entry(sbi, curseg->next_segno);
2732 curseg->seg_type = se->type;
2733 change_curseg(sbi, type, true);
2735 /* allocate cold segment by default */
2736 curseg->seg_type = CURSEG_COLD_DATA;
2737 new_curseg(sbi, type, true);
2739 stat_inc_seg_type(sbi, curseg);
2742 static void __f2fs_init_atgc_curseg(struct f2fs_sb_info *sbi)
2744 struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_ALL_DATA_ATGC);
2746 if (!sbi->am.atgc_enabled)
2749 down_read(&SM_I(sbi)->curseg_lock);
2751 mutex_lock(&curseg->curseg_mutex);
2752 down_write(&SIT_I(sbi)->sentry_lock);
2754 get_atssr_segment(sbi, CURSEG_ALL_DATA_ATGC, CURSEG_COLD_DATA, SSR, 0);
2756 up_write(&SIT_I(sbi)->sentry_lock);
2757 mutex_unlock(&curseg->curseg_mutex);
2759 up_read(&SM_I(sbi)->curseg_lock);
2762 void f2fs_init_inmem_curseg(struct f2fs_sb_info *sbi)
2764 __f2fs_init_atgc_curseg(sbi);
2767 static void __f2fs_save_inmem_curseg(struct f2fs_sb_info *sbi, int type)
2769 struct curseg_info *curseg = CURSEG_I(sbi, type);
2771 mutex_lock(&curseg->curseg_mutex);
2772 if (!curseg->inited)
2775 if (get_valid_blocks(sbi, curseg->segno, false)) {
2776 write_sum_page(sbi, curseg->sum_blk,
2777 GET_SUM_BLOCK(sbi, curseg->segno));
2779 mutex_lock(&DIRTY_I(sbi)->seglist_lock);
2780 __set_test_and_free(sbi, curseg->segno, true);
2781 mutex_unlock(&DIRTY_I(sbi)->seglist_lock);
2784 mutex_unlock(&curseg->curseg_mutex);
2787 void f2fs_save_inmem_curseg(struct f2fs_sb_info *sbi)
2789 __f2fs_save_inmem_curseg(sbi, CURSEG_COLD_DATA_PINNED);
2791 if (sbi->am.atgc_enabled)
2792 __f2fs_save_inmem_curseg(sbi, CURSEG_ALL_DATA_ATGC);
2795 static void __f2fs_restore_inmem_curseg(struct f2fs_sb_info *sbi, int type)
2797 struct curseg_info *curseg = CURSEG_I(sbi, type);
2799 mutex_lock(&curseg->curseg_mutex);
2800 if (!curseg->inited)
2802 if (get_valid_blocks(sbi, curseg->segno, false))
2805 mutex_lock(&DIRTY_I(sbi)->seglist_lock);
2806 __set_test_and_inuse(sbi, curseg->segno);
2807 mutex_unlock(&DIRTY_I(sbi)->seglist_lock);
2809 mutex_unlock(&curseg->curseg_mutex);
2812 void f2fs_restore_inmem_curseg(struct f2fs_sb_info *sbi)
2814 __f2fs_restore_inmem_curseg(sbi, CURSEG_COLD_DATA_PINNED);
2816 if (sbi->am.atgc_enabled)
2817 __f2fs_restore_inmem_curseg(sbi, CURSEG_ALL_DATA_ATGC);
2820 static int get_ssr_segment(struct f2fs_sb_info *sbi, int type,
2821 int alloc_mode, unsigned long long age)
2823 struct curseg_info *curseg = CURSEG_I(sbi, type);
2824 const struct victim_selection *v_ops = DIRTY_I(sbi)->v_ops;
2825 unsigned segno = NULL_SEGNO;
2826 unsigned short seg_type = curseg->seg_type;
2828 bool reversed = false;
2830 sanity_check_seg_type(sbi, seg_type);
2832 /* f2fs_need_SSR() already forces to do this */
2833 if (!v_ops->get_victim(sbi, &segno, BG_GC, seg_type, alloc_mode, age)) {
2834 curseg->next_segno = segno;
2838 /* For node segments, let's do SSR more intensively */
2839 if (IS_NODESEG(seg_type)) {
2840 if (seg_type >= CURSEG_WARM_NODE) {
2842 i = CURSEG_COLD_NODE;
2844 i = CURSEG_HOT_NODE;
2846 cnt = NR_CURSEG_NODE_TYPE;
2848 if (seg_type >= CURSEG_WARM_DATA) {
2850 i = CURSEG_COLD_DATA;
2852 i = CURSEG_HOT_DATA;
2854 cnt = NR_CURSEG_DATA_TYPE;
2857 for (; cnt-- > 0; reversed ? i-- : i++) {
2860 if (!v_ops->get_victim(sbi, &segno, BG_GC, i, alloc_mode, age)) {
2861 curseg->next_segno = segno;
2866 /* find valid_blocks=0 in dirty list */
2867 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
2868 segno = get_free_segment(sbi);
2869 if (segno != NULL_SEGNO) {
2870 curseg->next_segno = segno;
2878 * flush out current segment and replace it with new segment
2879 * This function should be returned with success, otherwise BUG
2881 static void allocate_segment_by_default(struct f2fs_sb_info *sbi,
2882 int type, bool force)
2884 struct curseg_info *curseg = CURSEG_I(sbi, type);
2887 new_curseg(sbi, type, true);
2888 else if (!is_set_ckpt_flags(sbi, CP_CRC_RECOVERY_FLAG) &&
2889 curseg->seg_type == CURSEG_WARM_NODE)
2890 new_curseg(sbi, type, false);
2891 else if (curseg->alloc_type == LFS &&
2892 is_next_segment_free(sbi, curseg, type) &&
2893 likely(!is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
2894 new_curseg(sbi, type, false);
2895 else if (f2fs_need_SSR(sbi) &&
2896 get_ssr_segment(sbi, type, SSR, 0))
2897 change_curseg(sbi, type, true);
2899 new_curseg(sbi, type, false);
2901 stat_inc_seg_type(sbi, curseg);
2904 void f2fs_allocate_segment_for_resize(struct f2fs_sb_info *sbi, int type,
2905 unsigned int start, unsigned int end)
2907 struct curseg_info *curseg = CURSEG_I(sbi, type);
2910 down_read(&SM_I(sbi)->curseg_lock);
2911 mutex_lock(&curseg->curseg_mutex);
2912 down_write(&SIT_I(sbi)->sentry_lock);
2914 segno = CURSEG_I(sbi, type)->segno;
2915 if (segno < start || segno > end)
2918 if (f2fs_need_SSR(sbi) && get_ssr_segment(sbi, type, SSR, 0))
2919 change_curseg(sbi, type, true);
2921 new_curseg(sbi, type, true);
2923 stat_inc_seg_type(sbi, curseg);
2925 locate_dirty_segment(sbi, segno);
2927 up_write(&SIT_I(sbi)->sentry_lock);
2929 if (segno != curseg->segno)
2930 f2fs_notice(sbi, "For resize: curseg of type %d: %u ==> %u",
2931 type, segno, curseg->segno);
2933 mutex_unlock(&curseg->curseg_mutex);
2934 up_read(&SM_I(sbi)->curseg_lock);
2937 static void __allocate_new_segment(struct f2fs_sb_info *sbi, int type,
2938 bool new_sec, bool force)
2940 struct curseg_info *curseg = CURSEG_I(sbi, type);
2941 unsigned int old_segno;
2943 if (!curseg->inited)
2946 if (force || curseg->next_blkoff ||
2947 get_valid_blocks(sbi, curseg->segno, new_sec))
2950 if (!get_ckpt_valid_blocks(sbi, curseg->segno, new_sec))
2953 old_segno = curseg->segno;
2954 SIT_I(sbi)->s_ops->allocate_segment(sbi, type, true);
2955 locate_dirty_segment(sbi, old_segno);
2958 static void __allocate_new_section(struct f2fs_sb_info *sbi,
2959 int type, bool force)
2961 __allocate_new_segment(sbi, type, true, force);
2964 void f2fs_allocate_new_section(struct f2fs_sb_info *sbi, int type, bool force)
2966 down_read(&SM_I(sbi)->curseg_lock);
2967 down_write(&SIT_I(sbi)->sentry_lock);
2968 __allocate_new_section(sbi, type, force);
2969 up_write(&SIT_I(sbi)->sentry_lock);
2970 up_read(&SM_I(sbi)->curseg_lock);
2973 void f2fs_allocate_new_segments(struct f2fs_sb_info *sbi)
2977 down_read(&SM_I(sbi)->curseg_lock);
2978 down_write(&SIT_I(sbi)->sentry_lock);
2979 for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++)
2980 __allocate_new_segment(sbi, i, false, false);
2981 up_write(&SIT_I(sbi)->sentry_lock);
2982 up_read(&SM_I(sbi)->curseg_lock);
2985 static const struct segment_allocation default_salloc_ops = {
2986 .allocate_segment = allocate_segment_by_default,
2989 bool f2fs_exist_trim_candidates(struct f2fs_sb_info *sbi,
2990 struct cp_control *cpc)
2992 __u64 trim_start = cpc->trim_start;
2993 bool has_candidate = false;
2995 down_write(&SIT_I(sbi)->sentry_lock);
2996 for (; cpc->trim_start <= cpc->trim_end; cpc->trim_start++) {
2997 if (add_discard_addrs(sbi, cpc, true)) {
2998 has_candidate = true;
3002 up_write(&SIT_I(sbi)->sentry_lock);
3004 cpc->trim_start = trim_start;
3005 return has_candidate;
3008 static unsigned int __issue_discard_cmd_range(struct f2fs_sb_info *sbi,
3009 struct discard_policy *dpolicy,
3010 unsigned int start, unsigned int end)
3012 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
3013 struct discard_cmd *prev_dc = NULL, *next_dc = NULL;
3014 struct rb_node **insert_p = NULL, *insert_parent = NULL;
3015 struct discard_cmd *dc;
3016 struct blk_plug plug;
3018 unsigned int trimmed = 0;
3023 mutex_lock(&dcc->cmd_lock);
3024 if (unlikely(dcc->rbtree_check))
3025 f2fs_bug_on(sbi, !f2fs_check_rb_tree_consistence(sbi,
3026 &dcc->root, false));
3028 dc = (struct discard_cmd *)f2fs_lookup_rb_tree_ret(&dcc->root,
3030 (struct rb_entry **)&prev_dc,
3031 (struct rb_entry **)&next_dc,
3032 &insert_p, &insert_parent, true, NULL);
3036 blk_start_plug(&plug);
3038 while (dc && dc->lstart <= end) {
3039 struct rb_node *node;
3042 if (dc->len < dpolicy->granularity)
3045 if (dc->state != D_PREP) {
3046 list_move_tail(&dc->list, &dcc->fstrim_list);
3050 err = __submit_discard_cmd(sbi, dpolicy, dc, &issued);
3052 if (issued >= dpolicy->max_requests) {
3053 start = dc->lstart + dc->len;
3056 __remove_discard_cmd(sbi, dc);
3058 blk_finish_plug(&plug);
3059 mutex_unlock(&dcc->cmd_lock);
3060 trimmed += __wait_all_discard_cmd(sbi, NULL);
3061 congestion_wait(BLK_RW_ASYNC, DEFAULT_IO_TIMEOUT);
3065 node = rb_next(&dc->rb_node);
3067 __remove_discard_cmd(sbi, dc);
3068 dc = rb_entry_safe(node, struct discard_cmd, rb_node);
3070 if (fatal_signal_pending(current))
3074 blk_finish_plug(&plug);
3075 mutex_unlock(&dcc->cmd_lock);
3080 int f2fs_trim_fs(struct f2fs_sb_info *sbi, struct fstrim_range *range)
3082 __u64 start = F2FS_BYTES_TO_BLK(range->start);
3083 __u64 end = start + F2FS_BYTES_TO_BLK(range->len) - 1;
3084 unsigned int start_segno, end_segno;
3085 block_t start_block, end_block;
3086 struct cp_control cpc;
3087 struct discard_policy dpolicy;
3088 unsigned long long trimmed = 0;
3090 bool need_align = f2fs_lfs_mode(sbi) && __is_large_section(sbi);
3092 if (start >= MAX_BLKADDR(sbi) || range->len < sbi->blocksize)
3095 if (end < MAIN_BLKADDR(sbi))
3098 if (is_sbi_flag_set(sbi, SBI_NEED_FSCK)) {
3099 f2fs_warn(sbi, "Found FS corruption, run fsck to fix.");
3100 return -EFSCORRUPTED;
3103 /* start/end segment number in main_area */
3104 start_segno = (start <= MAIN_BLKADDR(sbi)) ? 0 : GET_SEGNO(sbi, start);
3105 end_segno = (end >= MAX_BLKADDR(sbi)) ? MAIN_SEGS(sbi) - 1 :
3106 GET_SEGNO(sbi, end);
3108 start_segno = rounddown(start_segno, sbi->segs_per_sec);
3109 end_segno = roundup(end_segno + 1, sbi->segs_per_sec) - 1;
3112 cpc.reason = CP_DISCARD;
3113 cpc.trim_minlen = max_t(__u64, 1, F2FS_BYTES_TO_BLK(range->minlen));
3114 cpc.trim_start = start_segno;
3115 cpc.trim_end = end_segno;
3117 if (sbi->discard_blks == 0)
3120 down_write(&sbi->gc_lock);
3121 err = f2fs_write_checkpoint(sbi, &cpc);
3122 up_write(&sbi->gc_lock);
3127 * We filed discard candidates, but actually we don't need to wait for
3128 * all of them, since they'll be issued in idle time along with runtime
3129 * discard option. User configuration looks like using runtime discard
3130 * or periodic fstrim instead of it.
3132 if (f2fs_realtime_discard_enable(sbi))
3135 start_block = START_BLOCK(sbi, start_segno);
3136 end_block = START_BLOCK(sbi, end_segno + 1);
3138 __init_discard_policy(sbi, &dpolicy, DPOLICY_FSTRIM, cpc.trim_minlen);
3139 trimmed = __issue_discard_cmd_range(sbi, &dpolicy,
3140 start_block, end_block);
3142 trimmed += __wait_discard_cmd_range(sbi, &dpolicy,
3143 start_block, end_block);
3146 range->len = F2FS_BLK_TO_BYTES(trimmed);
3150 static bool __has_curseg_space(struct f2fs_sb_info *sbi,
3151 struct curseg_info *curseg)
3153 return curseg->next_blkoff < f2fs_usable_blks_in_seg(sbi,
3157 int f2fs_rw_hint_to_seg_type(enum rw_hint hint)
3160 case WRITE_LIFE_SHORT:
3161 return CURSEG_HOT_DATA;
3162 case WRITE_LIFE_EXTREME:
3163 return CURSEG_COLD_DATA;
3165 return CURSEG_WARM_DATA;
3169 /* This returns write hints for each segment type. This hints will be
3170 * passed down to block layer. There are mapping tables which depend on
3171 * the mount option 'whint_mode'.
3173 * 1) whint_mode=off. F2FS only passes down WRITE_LIFE_NOT_SET.
3175 * 2) whint_mode=user-based. F2FS tries to pass down hints given by users.
3179 * META WRITE_LIFE_NOT_SET
3183 * ioctl(COLD) COLD_DATA WRITE_LIFE_EXTREME
3184 * extension list " "
3187 * WRITE_LIFE_EXTREME COLD_DATA WRITE_LIFE_EXTREME
3188 * WRITE_LIFE_SHORT HOT_DATA WRITE_LIFE_SHORT
3189 * WRITE_LIFE_NOT_SET WARM_DATA WRITE_LIFE_NOT_SET
3190 * WRITE_LIFE_NONE " "
3191 * WRITE_LIFE_MEDIUM " "
3192 * WRITE_LIFE_LONG " "
3195 * WRITE_LIFE_EXTREME COLD_DATA WRITE_LIFE_EXTREME
3196 * WRITE_LIFE_SHORT HOT_DATA WRITE_LIFE_SHORT
3197 * WRITE_LIFE_NOT_SET WARM_DATA WRITE_LIFE_NOT_SET
3198 * WRITE_LIFE_NONE " WRITE_LIFE_NONE
3199 * WRITE_LIFE_MEDIUM " WRITE_LIFE_MEDIUM
3200 * WRITE_LIFE_LONG " WRITE_LIFE_LONG
3202 * 3) whint_mode=fs-based. F2FS passes down hints with its policy.
3206 * META WRITE_LIFE_MEDIUM;
3207 * HOT_NODE WRITE_LIFE_NOT_SET
3209 * COLD_NODE WRITE_LIFE_NONE
3210 * ioctl(COLD) COLD_DATA WRITE_LIFE_EXTREME
3211 * extension list " "
3214 * WRITE_LIFE_EXTREME COLD_DATA WRITE_LIFE_EXTREME
3215 * WRITE_LIFE_SHORT HOT_DATA WRITE_LIFE_SHORT
3216 * WRITE_LIFE_NOT_SET WARM_DATA WRITE_LIFE_LONG
3217 * WRITE_LIFE_NONE " "
3218 * WRITE_LIFE_MEDIUM " "
3219 * WRITE_LIFE_LONG " "
3222 * WRITE_LIFE_EXTREME COLD_DATA WRITE_LIFE_EXTREME
3223 * WRITE_LIFE_SHORT HOT_DATA WRITE_LIFE_SHORT
3224 * WRITE_LIFE_NOT_SET WARM_DATA WRITE_LIFE_NOT_SET
3225 * WRITE_LIFE_NONE " WRITE_LIFE_NONE
3226 * WRITE_LIFE_MEDIUM " WRITE_LIFE_MEDIUM
3227 * WRITE_LIFE_LONG " WRITE_LIFE_LONG
3230 enum rw_hint f2fs_io_type_to_rw_hint(struct f2fs_sb_info *sbi,
3231 enum page_type type, enum temp_type temp)
3233 if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_USER) {
3236 return WRITE_LIFE_NOT_SET;
3237 else if (temp == HOT)
3238 return WRITE_LIFE_SHORT;
3239 else if (temp == COLD)
3240 return WRITE_LIFE_EXTREME;
3242 return WRITE_LIFE_NOT_SET;
3244 } else if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_FS) {
3247 return WRITE_LIFE_LONG;
3248 else if (temp == HOT)
3249 return WRITE_LIFE_SHORT;
3250 else if (temp == COLD)
3251 return WRITE_LIFE_EXTREME;
3252 } else if (type == NODE) {
3253 if (temp == WARM || temp == HOT)
3254 return WRITE_LIFE_NOT_SET;
3255 else if (temp == COLD)
3256 return WRITE_LIFE_NONE;
3257 } else if (type == META) {
3258 return WRITE_LIFE_MEDIUM;
3261 return WRITE_LIFE_NOT_SET;
3264 static int __get_segment_type_2(struct f2fs_io_info *fio)
3266 if (fio->type == DATA)
3267 return CURSEG_HOT_DATA;
3269 return CURSEG_HOT_NODE;
3272 static int __get_segment_type_4(struct f2fs_io_info *fio)
3274 if (fio->type == DATA) {
3275 struct inode *inode = fio->page->mapping->host;
3277 if (S_ISDIR(inode->i_mode))
3278 return CURSEG_HOT_DATA;
3280 return CURSEG_COLD_DATA;
3282 if (IS_DNODE(fio->page) && is_cold_node(fio->page))
3283 return CURSEG_WARM_NODE;
3285 return CURSEG_COLD_NODE;
3289 static int __get_segment_type_6(struct f2fs_io_info *fio)
3291 if (fio->type == DATA) {
3292 struct inode *inode = fio->page->mapping->host;
3294 if (is_inode_flag_set(inode, FI_ALIGNED_WRITE))
3295 return CURSEG_COLD_DATA_PINNED;
3297 if (page_private_gcing(fio->page)) {
3298 if (fio->sbi->am.atgc_enabled &&
3299 (fio->io_type == FS_DATA_IO) &&
3300 (fio->sbi->gc_mode != GC_URGENT_HIGH))
3301 return CURSEG_ALL_DATA_ATGC;
3303 return CURSEG_COLD_DATA;
3305 if (file_is_cold(inode) || f2fs_need_compress_data(inode))
3306 return CURSEG_COLD_DATA;
3307 if (file_is_hot(inode) ||
3308 is_inode_flag_set(inode, FI_HOT_DATA) ||
3309 f2fs_is_atomic_file(inode) ||
3310 f2fs_is_volatile_file(inode))
3311 return CURSEG_HOT_DATA;
3312 return f2fs_rw_hint_to_seg_type(inode->i_write_hint);
3314 if (IS_DNODE(fio->page))
3315 return is_cold_node(fio->page) ? CURSEG_WARM_NODE :
3317 return CURSEG_COLD_NODE;
3321 static int __get_segment_type(struct f2fs_io_info *fio)
3325 switch (F2FS_OPTION(fio->sbi).active_logs) {
3327 type = __get_segment_type_2(fio);
3330 type = __get_segment_type_4(fio);
3333 type = __get_segment_type_6(fio);
3336 f2fs_bug_on(fio->sbi, true);
3341 else if (IS_WARM(type))
3348 void f2fs_allocate_data_block(struct f2fs_sb_info *sbi, struct page *page,
3349 block_t old_blkaddr, block_t *new_blkaddr,
3350 struct f2fs_summary *sum, int type,
3351 struct f2fs_io_info *fio)
3353 struct sit_info *sit_i = SIT_I(sbi);
3354 struct curseg_info *curseg = CURSEG_I(sbi, type);
3355 unsigned long long old_mtime;
3356 bool from_gc = (type == CURSEG_ALL_DATA_ATGC);
3357 struct seg_entry *se = NULL;
3359 down_read(&SM_I(sbi)->curseg_lock);
3361 mutex_lock(&curseg->curseg_mutex);
3362 down_write(&sit_i->sentry_lock);
3365 f2fs_bug_on(sbi, GET_SEGNO(sbi, old_blkaddr) == NULL_SEGNO);
3366 se = get_seg_entry(sbi, GET_SEGNO(sbi, old_blkaddr));
3367 sanity_check_seg_type(sbi, se->type);
3368 f2fs_bug_on(sbi, IS_NODESEG(se->type));
3370 *new_blkaddr = NEXT_FREE_BLKADDR(sbi, curseg);
3372 f2fs_bug_on(sbi, curseg->next_blkoff >= sbi->blocks_per_seg);
3374 f2fs_wait_discard_bio(sbi, *new_blkaddr);
3377 * __add_sum_entry should be resided under the curseg_mutex
3378 * because, this function updates a summary entry in the
3379 * current summary block.
3381 __add_sum_entry(sbi, type, sum);
3383 __refresh_next_blkoff(sbi, curseg);
3385 stat_inc_block_count(sbi, curseg);
3388 old_mtime = get_segment_mtime(sbi, old_blkaddr);
3390 update_segment_mtime(sbi, old_blkaddr, 0);
3393 update_segment_mtime(sbi, *new_blkaddr, old_mtime);
3396 * SIT information should be updated before segment allocation,
3397 * since SSR needs latest valid block information.
3399 update_sit_entry(sbi, *new_blkaddr, 1);
3400 if (GET_SEGNO(sbi, old_blkaddr) != NULL_SEGNO)
3401 update_sit_entry(sbi, old_blkaddr, -1);
3403 if (!__has_curseg_space(sbi, curseg)) {
3405 get_atssr_segment(sbi, type, se->type,
3408 sit_i->s_ops->allocate_segment(sbi, type, false);
3411 * segment dirty status should be updated after segment allocation,
3412 * so we just need to update status only one time after previous
3413 * segment being closed.
3415 locate_dirty_segment(sbi, GET_SEGNO(sbi, old_blkaddr));
3416 locate_dirty_segment(sbi, GET_SEGNO(sbi, *new_blkaddr));
3418 up_write(&sit_i->sentry_lock);
3420 if (page && IS_NODESEG(type)) {
3421 fill_node_footer_blkaddr(page, NEXT_FREE_BLKADDR(sbi, curseg));
3423 f2fs_inode_chksum_set(sbi, page);
3427 struct f2fs_bio_info *io;
3429 if (F2FS_IO_ALIGNED(sbi))
3432 INIT_LIST_HEAD(&fio->list);
3433 fio->in_list = true;
3434 io = sbi->write_io[fio->type] + fio->temp;
3435 spin_lock(&io->io_lock);
3436 list_add_tail(&fio->list, &io->io_list);
3437 spin_unlock(&io->io_lock);
3440 mutex_unlock(&curseg->curseg_mutex);
3442 up_read(&SM_I(sbi)->curseg_lock);
3445 static void update_device_state(struct f2fs_io_info *fio)
3447 struct f2fs_sb_info *sbi = fio->sbi;
3448 unsigned int devidx;
3450 if (!f2fs_is_multi_device(sbi))
3453 devidx = f2fs_target_device_index(sbi, fio->new_blkaddr);
3455 /* update device state for fsync */
3456 f2fs_set_dirty_device(sbi, fio->ino, devidx, FLUSH_INO);
3458 /* update device state for checkpoint */
3459 if (!f2fs_test_bit(devidx, (char *)&sbi->dirty_device)) {
3460 spin_lock(&sbi->dev_lock);
3461 f2fs_set_bit(devidx, (char *)&sbi->dirty_device);
3462 spin_unlock(&sbi->dev_lock);
3466 static void do_write_page(struct f2fs_summary *sum, struct f2fs_io_info *fio)
3468 int type = __get_segment_type(fio);
3469 bool keep_order = (f2fs_lfs_mode(fio->sbi) && type == CURSEG_COLD_DATA);
3472 down_read(&fio->sbi->io_order_lock);
3474 f2fs_allocate_data_block(fio->sbi, fio->page, fio->old_blkaddr,
3475 &fio->new_blkaddr, sum, type, fio);
3476 if (GET_SEGNO(fio->sbi, fio->old_blkaddr) != NULL_SEGNO) {
3477 invalidate_mapping_pages(META_MAPPING(fio->sbi),
3478 fio->old_blkaddr, fio->old_blkaddr);
3479 f2fs_invalidate_compress_page(fio->sbi, fio->old_blkaddr);
3482 /* writeout dirty page into bdev */
3483 f2fs_submit_page_write(fio);
3485 fio->old_blkaddr = fio->new_blkaddr;
3489 update_device_state(fio);
3492 up_read(&fio->sbi->io_order_lock);
3495 void f2fs_do_write_meta_page(struct f2fs_sb_info *sbi, struct page *page,
3496 enum iostat_type io_type)
3498 struct f2fs_io_info fio = {
3503 .op_flags = REQ_SYNC | REQ_META | REQ_PRIO,
3504 .old_blkaddr = page->index,
3505 .new_blkaddr = page->index,
3507 .encrypted_page = NULL,
3511 if (unlikely(page->index >= MAIN_BLKADDR(sbi)))
3512 fio.op_flags &= ~REQ_META;
3514 set_page_writeback(page);
3515 ClearPageError(page);
3516 f2fs_submit_page_write(&fio);
3518 stat_inc_meta_count(sbi, page->index);
3519 f2fs_update_iostat(sbi, io_type, F2FS_BLKSIZE);
3522 void f2fs_do_write_node_page(unsigned int nid, struct f2fs_io_info *fio)
3524 struct f2fs_summary sum;
3526 set_summary(&sum, nid, 0, 0);
3527 do_write_page(&sum, fio);
3529 f2fs_update_iostat(fio->sbi, fio->io_type, F2FS_BLKSIZE);
3532 void f2fs_outplace_write_data(struct dnode_of_data *dn,
3533 struct f2fs_io_info *fio)
3535 struct f2fs_sb_info *sbi = fio->sbi;
3536 struct f2fs_summary sum;
3538 f2fs_bug_on(sbi, dn->data_blkaddr == NULL_ADDR);
3539 set_summary(&sum, dn->nid, dn->ofs_in_node, fio->version);
3540 do_write_page(&sum, fio);
3541 f2fs_update_data_blkaddr(dn, fio->new_blkaddr);
3543 f2fs_update_iostat(sbi, fio->io_type, F2FS_BLKSIZE);
3546 int f2fs_inplace_write_data(struct f2fs_io_info *fio)
3549 struct f2fs_sb_info *sbi = fio->sbi;
3552 fio->new_blkaddr = fio->old_blkaddr;
3553 /* i/o temperature is needed for passing down write hints */
3554 __get_segment_type(fio);
3556 segno = GET_SEGNO(sbi, fio->new_blkaddr);
3558 if (!IS_DATASEG(get_seg_entry(sbi, segno)->type)) {
3559 set_sbi_flag(sbi, SBI_NEED_FSCK);
3560 f2fs_warn(sbi, "%s: incorrect segment(%u) type, run fsck to fix.",
3562 err = -EFSCORRUPTED;
3566 if (is_sbi_flag_set(sbi, SBI_NEED_FSCK) || f2fs_cp_error(sbi)) {
3571 stat_inc_inplace_blocks(fio->sbi);
3573 if (fio->bio && !(SM_I(sbi)->ipu_policy & (1 << F2FS_IPU_NOCACHE)))
3574 err = f2fs_merge_page_bio(fio);
3576 err = f2fs_submit_page_bio(fio);
3578 update_device_state(fio);
3579 f2fs_update_iostat(fio->sbi, fio->io_type, F2FS_BLKSIZE);
3584 if (fio->bio && *(fio->bio)) {
3585 struct bio *bio = *(fio->bio);
3587 bio->bi_status = BLK_STS_IOERR;
3594 static inline int __f2fs_get_curseg(struct f2fs_sb_info *sbi,
3599 for (i = CURSEG_HOT_DATA; i < NO_CHECK_TYPE; i++) {
3600 if (CURSEG_I(sbi, i)->segno == segno)
3606 void f2fs_do_replace_block(struct f2fs_sb_info *sbi, struct f2fs_summary *sum,
3607 block_t old_blkaddr, block_t new_blkaddr,
3608 bool recover_curseg, bool recover_newaddr,
3611 struct sit_info *sit_i = SIT_I(sbi);
3612 struct curseg_info *curseg;
3613 unsigned int segno, old_cursegno;
3614 struct seg_entry *se;
3616 unsigned short old_blkoff;
3617 unsigned char old_alloc_type;
3619 segno = GET_SEGNO(sbi, new_blkaddr);
3620 se = get_seg_entry(sbi, segno);
3623 down_write(&SM_I(sbi)->curseg_lock);
3625 if (!recover_curseg) {
3626 /* for recovery flow */
3627 if (se->valid_blocks == 0 && !IS_CURSEG(sbi, segno)) {
3628 if (old_blkaddr == NULL_ADDR)
3629 type = CURSEG_COLD_DATA;
3631 type = CURSEG_WARM_DATA;
3634 if (IS_CURSEG(sbi, segno)) {
3635 /* se->type is volatile as SSR allocation */
3636 type = __f2fs_get_curseg(sbi, segno);
3637 f2fs_bug_on(sbi, type == NO_CHECK_TYPE);
3639 type = CURSEG_WARM_DATA;
3643 f2fs_bug_on(sbi, !IS_DATASEG(type));
3644 curseg = CURSEG_I(sbi, type);
3646 mutex_lock(&curseg->curseg_mutex);
3647 down_write(&sit_i->sentry_lock);
3649 old_cursegno = curseg->segno;
3650 old_blkoff = curseg->next_blkoff;
3651 old_alloc_type = curseg->alloc_type;
3653 /* change the current segment */
3654 if (segno != curseg->segno) {
3655 curseg->next_segno = segno;
3656 change_curseg(sbi, type, true);
3659 curseg->next_blkoff = GET_BLKOFF_FROM_SEG0(sbi, new_blkaddr);
3660 __add_sum_entry(sbi, type, sum);
3662 if (!recover_curseg || recover_newaddr) {
3664 update_segment_mtime(sbi, new_blkaddr, 0);
3665 update_sit_entry(sbi, new_blkaddr, 1);
3667 if (GET_SEGNO(sbi, old_blkaddr) != NULL_SEGNO) {
3668 invalidate_mapping_pages(META_MAPPING(sbi),
3669 old_blkaddr, old_blkaddr);
3670 f2fs_invalidate_compress_page(sbi, old_blkaddr);
3672 update_segment_mtime(sbi, old_blkaddr, 0);
3673 update_sit_entry(sbi, old_blkaddr, -1);
3676 locate_dirty_segment(sbi, GET_SEGNO(sbi, old_blkaddr));
3677 locate_dirty_segment(sbi, GET_SEGNO(sbi, new_blkaddr));
3679 locate_dirty_segment(sbi, old_cursegno);
3681 if (recover_curseg) {
3682 if (old_cursegno != curseg->segno) {
3683 curseg->next_segno = old_cursegno;
3684 change_curseg(sbi, type, true);
3686 curseg->next_blkoff = old_blkoff;
3687 curseg->alloc_type = old_alloc_type;
3690 up_write(&sit_i->sentry_lock);
3691 mutex_unlock(&curseg->curseg_mutex);
3692 up_write(&SM_I(sbi)->curseg_lock);
3695 void f2fs_replace_block(struct f2fs_sb_info *sbi, struct dnode_of_data *dn,
3696 block_t old_addr, block_t new_addr,
3697 unsigned char version, bool recover_curseg,
3698 bool recover_newaddr)
3700 struct f2fs_summary sum;
3702 set_summary(&sum, dn->nid, dn->ofs_in_node, version);
3704 f2fs_do_replace_block(sbi, &sum, old_addr, new_addr,
3705 recover_curseg, recover_newaddr, false);
3707 f2fs_update_data_blkaddr(dn, new_addr);
3710 void f2fs_wait_on_page_writeback(struct page *page,
3711 enum page_type type, bool ordered, bool locked)
3713 if (PageWriteback(page)) {
3714 struct f2fs_sb_info *sbi = F2FS_P_SB(page);
3716 /* submit cached LFS IO */
3717 f2fs_submit_merged_write_cond(sbi, NULL, page, 0, type);
3718 /* sbumit cached IPU IO */
3719 f2fs_submit_merged_ipu_write(sbi, NULL, page);
3721 wait_on_page_writeback(page);
3722 f2fs_bug_on(sbi, locked && PageWriteback(page));
3724 wait_for_stable_page(page);
3729 void f2fs_wait_on_block_writeback(struct inode *inode, block_t blkaddr)
3731 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3734 if (!f2fs_post_read_required(inode))
3737 if (!__is_valid_data_blkaddr(blkaddr))
3740 cpage = find_lock_page(META_MAPPING(sbi), blkaddr);
3742 f2fs_wait_on_page_writeback(cpage, DATA, true, true);
3743 f2fs_put_page(cpage, 1);
3747 void f2fs_wait_on_block_writeback_range(struct inode *inode, block_t blkaddr,
3752 for (i = 0; i < len; i++)
3753 f2fs_wait_on_block_writeback(inode, blkaddr + i);
3756 static int read_compacted_summaries(struct f2fs_sb_info *sbi)
3758 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
3759 struct curseg_info *seg_i;
3760 unsigned char *kaddr;
3765 start = start_sum_block(sbi);
3767 page = f2fs_get_meta_page(sbi, start++);
3769 return PTR_ERR(page);
3770 kaddr = (unsigned char *)page_address(page);
3772 /* Step 1: restore nat cache */
3773 seg_i = CURSEG_I(sbi, CURSEG_HOT_DATA);
3774 memcpy(seg_i->journal, kaddr, SUM_JOURNAL_SIZE);
3776 /* Step 2: restore sit cache */
3777 seg_i = CURSEG_I(sbi, CURSEG_COLD_DATA);
3778 memcpy(seg_i->journal, kaddr + SUM_JOURNAL_SIZE, SUM_JOURNAL_SIZE);
3779 offset = 2 * SUM_JOURNAL_SIZE;
3781 /* Step 3: restore summary entries */
3782 for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) {
3783 unsigned short blk_off;
3786 seg_i = CURSEG_I(sbi, i);
3787 segno = le32_to_cpu(ckpt->cur_data_segno[i]);
3788 blk_off = le16_to_cpu(ckpt->cur_data_blkoff[i]);
3789 seg_i->next_segno = segno;
3790 reset_curseg(sbi, i, 0);
3791 seg_i->alloc_type = ckpt->alloc_type[i];
3792 seg_i->next_blkoff = blk_off;
3794 if (seg_i->alloc_type == SSR)
3795 blk_off = sbi->blocks_per_seg;
3797 for (j = 0; j < blk_off; j++) {
3798 struct f2fs_summary *s;
3800 s = (struct f2fs_summary *)(kaddr + offset);
3801 seg_i->sum_blk->entries[j] = *s;
3802 offset += SUMMARY_SIZE;
3803 if (offset + SUMMARY_SIZE <= PAGE_SIZE -
3807 f2fs_put_page(page, 1);
3810 page = f2fs_get_meta_page(sbi, start++);
3812 return PTR_ERR(page);
3813 kaddr = (unsigned char *)page_address(page);
3817 f2fs_put_page(page, 1);
3821 static int read_normal_summaries(struct f2fs_sb_info *sbi, int type)
3823 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
3824 struct f2fs_summary_block *sum;
3825 struct curseg_info *curseg;
3827 unsigned short blk_off;
3828 unsigned int segno = 0;
3829 block_t blk_addr = 0;
3832 /* get segment number and block addr */
3833 if (IS_DATASEG(type)) {
3834 segno = le32_to_cpu(ckpt->cur_data_segno[type]);
3835 blk_off = le16_to_cpu(ckpt->cur_data_blkoff[type -
3837 if (__exist_node_summaries(sbi))
3838 blk_addr = sum_blk_addr(sbi, NR_CURSEG_PERSIST_TYPE, type);
3840 blk_addr = sum_blk_addr(sbi, NR_CURSEG_DATA_TYPE, type);
3842 segno = le32_to_cpu(ckpt->cur_node_segno[type -
3844 blk_off = le16_to_cpu(ckpt->cur_node_blkoff[type -
3846 if (__exist_node_summaries(sbi))
3847 blk_addr = sum_blk_addr(sbi, NR_CURSEG_NODE_TYPE,
3848 type - CURSEG_HOT_NODE);
3850 blk_addr = GET_SUM_BLOCK(sbi, segno);
3853 new = f2fs_get_meta_page(sbi, blk_addr);
3855 return PTR_ERR(new);
3856 sum = (struct f2fs_summary_block *)page_address(new);
3858 if (IS_NODESEG(type)) {
3859 if (__exist_node_summaries(sbi)) {
3860 struct f2fs_summary *ns = &sum->entries[0];
3863 for (i = 0; i < sbi->blocks_per_seg; i++, ns++) {
3865 ns->ofs_in_node = 0;
3868 err = f2fs_restore_node_summary(sbi, segno, sum);
3874 /* set uncompleted segment to curseg */
3875 curseg = CURSEG_I(sbi, type);
3876 mutex_lock(&curseg->curseg_mutex);
3878 /* update journal info */
3879 down_write(&curseg->journal_rwsem);
3880 memcpy(curseg->journal, &sum->journal, SUM_JOURNAL_SIZE);
3881 up_write(&curseg->journal_rwsem);
3883 memcpy(curseg->sum_blk->entries, sum->entries, SUM_ENTRY_SIZE);
3884 memcpy(&curseg->sum_blk->footer, &sum->footer, SUM_FOOTER_SIZE);
3885 curseg->next_segno = segno;
3886 reset_curseg(sbi, type, 0);
3887 curseg->alloc_type = ckpt->alloc_type[type];
3888 curseg->next_blkoff = blk_off;
3889 mutex_unlock(&curseg->curseg_mutex);
3891 f2fs_put_page(new, 1);
3895 static int restore_curseg_summaries(struct f2fs_sb_info *sbi)
3897 struct f2fs_journal *sit_j = CURSEG_I(sbi, CURSEG_COLD_DATA)->journal;
3898 struct f2fs_journal *nat_j = CURSEG_I(sbi, CURSEG_HOT_DATA)->journal;
3899 int type = CURSEG_HOT_DATA;
3902 if (is_set_ckpt_flags(sbi, CP_COMPACT_SUM_FLAG)) {
3903 int npages = f2fs_npages_for_summary_flush(sbi, true);
3906 f2fs_ra_meta_pages(sbi, start_sum_block(sbi), npages,
3909 /* restore for compacted data summary */
3910 err = read_compacted_summaries(sbi);
3913 type = CURSEG_HOT_NODE;
3916 if (__exist_node_summaries(sbi))
3917 f2fs_ra_meta_pages(sbi,
3918 sum_blk_addr(sbi, NR_CURSEG_PERSIST_TYPE, type),
3919 NR_CURSEG_PERSIST_TYPE - type, META_CP, true);
3921 for (; type <= CURSEG_COLD_NODE; type++) {
3922 err = read_normal_summaries(sbi, type);
3927 /* sanity check for summary blocks */
3928 if (nats_in_cursum(nat_j) > NAT_JOURNAL_ENTRIES ||
3929 sits_in_cursum(sit_j) > SIT_JOURNAL_ENTRIES) {
3930 f2fs_err(sbi, "invalid journal entries nats %u sits %u",
3931 nats_in_cursum(nat_j), sits_in_cursum(sit_j));
3938 static void write_compacted_summaries(struct f2fs_sb_info *sbi, block_t blkaddr)
3941 unsigned char *kaddr;
3942 struct f2fs_summary *summary;
3943 struct curseg_info *seg_i;
3944 int written_size = 0;
3947 page = f2fs_grab_meta_page(sbi, blkaddr++);
3948 kaddr = (unsigned char *)page_address(page);
3949 memset(kaddr, 0, PAGE_SIZE);
3951 /* Step 1: write nat cache */
3952 seg_i = CURSEG_I(sbi, CURSEG_HOT_DATA);
3953 memcpy(kaddr, seg_i->journal, SUM_JOURNAL_SIZE);
3954 written_size += SUM_JOURNAL_SIZE;
3956 /* Step 2: write sit cache */
3957 seg_i = CURSEG_I(sbi, CURSEG_COLD_DATA);
3958 memcpy(kaddr + written_size, seg_i->journal, SUM_JOURNAL_SIZE);
3959 written_size += SUM_JOURNAL_SIZE;
3961 /* Step 3: write summary entries */
3962 for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) {
3963 unsigned short blkoff;
3965 seg_i = CURSEG_I(sbi, i);
3966 if (sbi->ckpt->alloc_type[i] == SSR)
3967 blkoff = sbi->blocks_per_seg;
3969 blkoff = curseg_blkoff(sbi, i);
3971 for (j = 0; j < blkoff; j++) {
3973 page = f2fs_grab_meta_page(sbi, blkaddr++);
3974 kaddr = (unsigned char *)page_address(page);
3975 memset(kaddr, 0, PAGE_SIZE);
3978 summary = (struct f2fs_summary *)(kaddr + written_size);
3979 *summary = seg_i->sum_blk->entries[j];
3980 written_size += SUMMARY_SIZE;
3982 if (written_size + SUMMARY_SIZE <= PAGE_SIZE -
3986 set_page_dirty(page);
3987 f2fs_put_page(page, 1);
3992 set_page_dirty(page);
3993 f2fs_put_page(page, 1);
3997 static void write_normal_summaries(struct f2fs_sb_info *sbi,
3998 block_t blkaddr, int type)
4002 if (IS_DATASEG(type))
4003 end = type + NR_CURSEG_DATA_TYPE;
4005 end = type + NR_CURSEG_NODE_TYPE;
4007 for (i = type; i < end; i++)
4008 write_current_sum_page(sbi, i, blkaddr + (i - type));
4011 void f2fs_write_data_summaries(struct f2fs_sb_info *sbi, block_t start_blk)
4013 if (is_set_ckpt_flags(sbi, CP_COMPACT_SUM_FLAG))
4014 write_compacted_summaries(sbi, start_blk);
4016 write_normal_summaries(sbi, start_blk, CURSEG_HOT_DATA);
4019 void f2fs_write_node_summaries(struct f2fs_sb_info *sbi, block_t start_blk)
4021 write_normal_summaries(sbi, start_blk, CURSEG_HOT_NODE);
4024 int f2fs_lookup_journal_in_cursum(struct f2fs_journal *journal, int type,
4025 unsigned int val, int alloc)
4029 if (type == NAT_JOURNAL) {
4030 for (i = 0; i < nats_in_cursum(journal); i++) {
4031 if (le32_to_cpu(nid_in_journal(journal, i)) == val)
4034 if (alloc && __has_cursum_space(journal, 1, NAT_JOURNAL))
4035 return update_nats_in_cursum(journal, 1);
4036 } else if (type == SIT_JOURNAL) {
4037 for (i = 0; i < sits_in_cursum(journal); i++)
4038 if (le32_to_cpu(segno_in_journal(journal, i)) == val)
4040 if (alloc && __has_cursum_space(journal, 1, SIT_JOURNAL))
4041 return update_sits_in_cursum(journal, 1);
4046 static struct page *get_current_sit_page(struct f2fs_sb_info *sbi,
4049 return f2fs_get_meta_page(sbi, current_sit_addr(sbi, segno));
4052 static struct page *get_next_sit_page(struct f2fs_sb_info *sbi,
4055 struct sit_info *sit_i = SIT_I(sbi);
4057 pgoff_t src_off, dst_off;
4059 src_off = current_sit_addr(sbi, start);
4060 dst_off = next_sit_addr(sbi, src_off);
4062 page = f2fs_grab_meta_page(sbi, dst_off);
4063 seg_info_to_sit_page(sbi, page, start);
4065 set_page_dirty(page);
4066 set_to_next_sit(sit_i, start);
4071 static struct sit_entry_set *grab_sit_entry_set(void)
4073 struct sit_entry_set *ses =
4074 f2fs_kmem_cache_alloc(sit_entry_set_slab, GFP_NOFS);
4077 INIT_LIST_HEAD(&ses->set_list);
4081 static void release_sit_entry_set(struct sit_entry_set *ses)
4083 list_del(&ses->set_list);
4084 kmem_cache_free(sit_entry_set_slab, ses);
4087 static void adjust_sit_entry_set(struct sit_entry_set *ses,
4088 struct list_head *head)
4090 struct sit_entry_set *next = ses;
4092 if (list_is_last(&ses->set_list, head))
4095 list_for_each_entry_continue(next, head, set_list)
4096 if (ses->entry_cnt <= next->entry_cnt)
4099 list_move_tail(&ses->set_list, &next->set_list);
4102 static void add_sit_entry(unsigned int segno, struct list_head *head)
4104 struct sit_entry_set *ses;
4105 unsigned int start_segno = START_SEGNO(segno);
4107 list_for_each_entry(ses, head, set_list) {
4108 if (ses->start_segno == start_segno) {
4110 adjust_sit_entry_set(ses, head);
4115 ses = grab_sit_entry_set();
4117 ses->start_segno = start_segno;
4119 list_add(&ses->set_list, head);
4122 static void add_sits_in_set(struct f2fs_sb_info *sbi)
4124 struct f2fs_sm_info *sm_info = SM_I(sbi);
4125 struct list_head *set_list = &sm_info->sit_entry_set;
4126 unsigned long *bitmap = SIT_I(sbi)->dirty_sentries_bitmap;
4129 for_each_set_bit(segno, bitmap, MAIN_SEGS(sbi))
4130 add_sit_entry(segno, set_list);
4133 static void remove_sits_in_journal(struct f2fs_sb_info *sbi)
4135 struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA);
4136 struct f2fs_journal *journal = curseg->journal;
4139 down_write(&curseg->journal_rwsem);
4140 for (i = 0; i < sits_in_cursum(journal); i++) {
4144 segno = le32_to_cpu(segno_in_journal(journal, i));
4145 dirtied = __mark_sit_entry_dirty(sbi, segno);
4148 add_sit_entry(segno, &SM_I(sbi)->sit_entry_set);
4150 update_sits_in_cursum(journal, -i);
4151 up_write(&curseg->journal_rwsem);
4155 * CP calls this function, which flushes SIT entries including sit_journal,
4156 * and moves prefree segs to free segs.
4158 void f2fs_flush_sit_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc)
4160 struct sit_info *sit_i = SIT_I(sbi);
4161 unsigned long *bitmap = sit_i->dirty_sentries_bitmap;
4162 struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA);
4163 struct f2fs_journal *journal = curseg->journal;
4164 struct sit_entry_set *ses, *tmp;
4165 struct list_head *head = &SM_I(sbi)->sit_entry_set;
4166 bool to_journal = !is_sbi_flag_set(sbi, SBI_IS_RESIZEFS);
4167 struct seg_entry *se;
4169 down_write(&sit_i->sentry_lock);
4171 if (!sit_i->dirty_sentries)
4175 * add and account sit entries of dirty bitmap in sit entry
4178 add_sits_in_set(sbi);
4181 * if there are no enough space in journal to store dirty sit
4182 * entries, remove all entries from journal and add and account
4183 * them in sit entry set.
4185 if (!__has_cursum_space(journal, sit_i->dirty_sentries, SIT_JOURNAL) ||
4187 remove_sits_in_journal(sbi);
4190 * there are two steps to flush sit entries:
4191 * #1, flush sit entries to journal in current cold data summary block.
4192 * #2, flush sit entries to sit page.
4194 list_for_each_entry_safe(ses, tmp, head, set_list) {
4195 struct page *page = NULL;
4196 struct f2fs_sit_block *raw_sit = NULL;
4197 unsigned int start_segno = ses->start_segno;
4198 unsigned int end = min(start_segno + SIT_ENTRY_PER_BLOCK,
4199 (unsigned long)MAIN_SEGS(sbi));
4200 unsigned int segno = start_segno;
4203 !__has_cursum_space(journal, ses->entry_cnt, SIT_JOURNAL))
4207 down_write(&curseg->journal_rwsem);
4209 page = get_next_sit_page(sbi, start_segno);
4210 raw_sit = page_address(page);
4213 /* flush dirty sit entries in region of current sit set */
4214 for_each_set_bit_from(segno, bitmap, end) {
4215 int offset, sit_offset;
4217 se = get_seg_entry(sbi, segno);
4218 #ifdef CONFIG_F2FS_CHECK_FS
4219 if (memcmp(se->cur_valid_map, se->cur_valid_map_mir,
4220 SIT_VBLOCK_MAP_SIZE))
4221 f2fs_bug_on(sbi, 1);
4224 /* add discard candidates */
4225 if (!(cpc->reason & CP_DISCARD)) {
4226 cpc->trim_start = segno;
4227 add_discard_addrs(sbi, cpc, false);
4231 offset = f2fs_lookup_journal_in_cursum(journal,
4232 SIT_JOURNAL, segno, 1);
4233 f2fs_bug_on(sbi, offset < 0);
4234 segno_in_journal(journal, offset) =
4236 seg_info_to_raw_sit(se,
4237 &sit_in_journal(journal, offset));
4238 check_block_count(sbi, segno,
4239 &sit_in_journal(journal, offset));
4241 sit_offset = SIT_ENTRY_OFFSET(sit_i, segno);
4242 seg_info_to_raw_sit(se,
4243 &raw_sit->entries[sit_offset]);
4244 check_block_count(sbi, segno,
4245 &raw_sit->entries[sit_offset]);
4248 __clear_bit(segno, bitmap);
4249 sit_i->dirty_sentries--;
4254 up_write(&curseg->journal_rwsem);
4256 f2fs_put_page(page, 1);
4258 f2fs_bug_on(sbi, ses->entry_cnt);
4259 release_sit_entry_set(ses);
4262 f2fs_bug_on(sbi, !list_empty(head));
4263 f2fs_bug_on(sbi, sit_i->dirty_sentries);
4265 if (cpc->reason & CP_DISCARD) {
4266 __u64 trim_start = cpc->trim_start;
4268 for (; cpc->trim_start <= cpc->trim_end; cpc->trim_start++)
4269 add_discard_addrs(sbi, cpc, false);
4271 cpc->trim_start = trim_start;
4273 up_write(&sit_i->sentry_lock);
4275 set_prefree_as_free_segments(sbi);
4278 static int build_sit_info(struct f2fs_sb_info *sbi)
4280 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
4281 struct sit_info *sit_i;
4282 unsigned int sit_segs, start;
4283 char *src_bitmap, *bitmap;
4284 unsigned int bitmap_size, main_bitmap_size, sit_bitmap_size;
4286 /* allocate memory for SIT information */
4287 sit_i = f2fs_kzalloc(sbi, sizeof(struct sit_info), GFP_KERNEL);
4291 SM_I(sbi)->sit_info = sit_i;
4294 f2fs_kvzalloc(sbi, array_size(sizeof(struct seg_entry),
4297 if (!sit_i->sentries)
4300 main_bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi));
4301 sit_i->dirty_sentries_bitmap = f2fs_kvzalloc(sbi, main_bitmap_size,
4303 if (!sit_i->dirty_sentries_bitmap)
4306 #ifdef CONFIG_F2FS_CHECK_FS
4307 bitmap_size = MAIN_SEGS(sbi) * SIT_VBLOCK_MAP_SIZE * 4;
4309 bitmap_size = MAIN_SEGS(sbi) * SIT_VBLOCK_MAP_SIZE * 3;
4311 sit_i->bitmap = f2fs_kvzalloc(sbi, bitmap_size, GFP_KERNEL);
4315 bitmap = sit_i->bitmap;
4317 for (start = 0; start < MAIN_SEGS(sbi); start++) {
4318 sit_i->sentries[start].cur_valid_map = bitmap;
4319 bitmap += SIT_VBLOCK_MAP_SIZE;
4321 sit_i->sentries[start].ckpt_valid_map = bitmap;
4322 bitmap += SIT_VBLOCK_MAP_SIZE;
4324 #ifdef CONFIG_F2FS_CHECK_FS
4325 sit_i->sentries[start].cur_valid_map_mir = bitmap;
4326 bitmap += SIT_VBLOCK_MAP_SIZE;
4329 sit_i->sentries[start].discard_map = bitmap;
4330 bitmap += SIT_VBLOCK_MAP_SIZE;
4333 sit_i->tmp_map = f2fs_kzalloc(sbi, SIT_VBLOCK_MAP_SIZE, GFP_KERNEL);
4334 if (!sit_i->tmp_map)
4337 if (__is_large_section(sbi)) {
4338 sit_i->sec_entries =
4339 f2fs_kvzalloc(sbi, array_size(sizeof(struct sec_entry),
4342 if (!sit_i->sec_entries)
4346 /* get information related with SIT */
4347 sit_segs = le32_to_cpu(raw_super->segment_count_sit) >> 1;
4349 /* setup SIT bitmap from ckeckpoint pack */
4350 sit_bitmap_size = __bitmap_size(sbi, SIT_BITMAP);
4351 src_bitmap = __bitmap_ptr(sbi, SIT_BITMAP);
4353 sit_i->sit_bitmap = kmemdup(src_bitmap, sit_bitmap_size, GFP_KERNEL);
4354 if (!sit_i->sit_bitmap)
4357 #ifdef CONFIG_F2FS_CHECK_FS
4358 sit_i->sit_bitmap_mir = kmemdup(src_bitmap,
4359 sit_bitmap_size, GFP_KERNEL);
4360 if (!sit_i->sit_bitmap_mir)
4363 sit_i->invalid_segmap = f2fs_kvzalloc(sbi,
4364 main_bitmap_size, GFP_KERNEL);
4365 if (!sit_i->invalid_segmap)
4369 /* init SIT information */
4370 sit_i->s_ops = &default_salloc_ops;
4372 sit_i->sit_base_addr = le32_to_cpu(raw_super->sit_blkaddr);
4373 sit_i->sit_blocks = sit_segs << sbi->log_blocks_per_seg;
4374 sit_i->written_valid_blocks = 0;
4375 sit_i->bitmap_size = sit_bitmap_size;
4376 sit_i->dirty_sentries = 0;
4377 sit_i->sents_per_block = SIT_ENTRY_PER_BLOCK;
4378 sit_i->elapsed_time = le64_to_cpu(sbi->ckpt->elapsed_time);
4379 sit_i->mounted_time = ktime_get_boottime_seconds();
4380 init_rwsem(&sit_i->sentry_lock);
4384 static int build_free_segmap(struct f2fs_sb_info *sbi)
4386 struct free_segmap_info *free_i;
4387 unsigned int bitmap_size, sec_bitmap_size;
4389 /* allocate memory for free segmap information */
4390 free_i = f2fs_kzalloc(sbi, sizeof(struct free_segmap_info), GFP_KERNEL);
4394 SM_I(sbi)->free_info = free_i;
4396 bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi));
4397 free_i->free_segmap = f2fs_kvmalloc(sbi, bitmap_size, GFP_KERNEL);
4398 if (!free_i->free_segmap)
4401 sec_bitmap_size = f2fs_bitmap_size(MAIN_SECS(sbi));
4402 free_i->free_secmap = f2fs_kvmalloc(sbi, sec_bitmap_size, GFP_KERNEL);
4403 if (!free_i->free_secmap)
4406 /* set all segments as dirty temporarily */
4407 memset(free_i->free_segmap, 0xff, bitmap_size);
4408 memset(free_i->free_secmap, 0xff, sec_bitmap_size);
4410 /* init free segmap information */
4411 free_i->start_segno = GET_SEGNO_FROM_SEG0(sbi, MAIN_BLKADDR(sbi));
4412 free_i->free_segments = 0;
4413 free_i->free_sections = 0;
4414 spin_lock_init(&free_i->segmap_lock);
4418 static int build_curseg(struct f2fs_sb_info *sbi)
4420 struct curseg_info *array;
4423 array = f2fs_kzalloc(sbi, array_size(NR_CURSEG_TYPE,
4424 sizeof(*array)), GFP_KERNEL);
4428 SM_I(sbi)->curseg_array = array;
4430 for (i = 0; i < NO_CHECK_TYPE; i++) {
4431 mutex_init(&array[i].curseg_mutex);
4432 array[i].sum_blk = f2fs_kzalloc(sbi, PAGE_SIZE, GFP_KERNEL);
4433 if (!array[i].sum_blk)
4435 init_rwsem(&array[i].journal_rwsem);
4436 array[i].journal = f2fs_kzalloc(sbi,
4437 sizeof(struct f2fs_journal), GFP_KERNEL);
4438 if (!array[i].journal)
4440 if (i < NR_PERSISTENT_LOG)
4441 array[i].seg_type = CURSEG_HOT_DATA + i;
4442 else if (i == CURSEG_COLD_DATA_PINNED)
4443 array[i].seg_type = CURSEG_COLD_DATA;
4444 else if (i == CURSEG_ALL_DATA_ATGC)
4445 array[i].seg_type = CURSEG_COLD_DATA;
4446 array[i].segno = NULL_SEGNO;
4447 array[i].next_blkoff = 0;
4448 array[i].inited = false;
4450 return restore_curseg_summaries(sbi);
4453 static int build_sit_entries(struct f2fs_sb_info *sbi)
4455 struct sit_info *sit_i = SIT_I(sbi);
4456 struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA);
4457 struct f2fs_journal *journal = curseg->journal;
4458 struct seg_entry *se;
4459 struct f2fs_sit_entry sit;
4460 int sit_blk_cnt = SIT_BLK_CNT(sbi);
4461 unsigned int i, start, end;
4462 unsigned int readed, start_blk = 0;
4464 block_t total_node_blocks = 0;
4467 readed = f2fs_ra_meta_pages(sbi, start_blk, BIO_MAX_VECS,
4470 start = start_blk * sit_i->sents_per_block;
4471 end = (start_blk + readed) * sit_i->sents_per_block;
4473 for (; start < end && start < MAIN_SEGS(sbi); start++) {
4474 struct f2fs_sit_block *sit_blk;
4477 se = &sit_i->sentries[start];
4478 page = get_current_sit_page(sbi, start);
4480 return PTR_ERR(page);
4481 sit_blk = (struct f2fs_sit_block *)page_address(page);
4482 sit = sit_blk->entries[SIT_ENTRY_OFFSET(sit_i, start)];
4483 f2fs_put_page(page, 1);
4485 err = check_block_count(sbi, start, &sit);
4488 seg_info_from_raw_sit(se, &sit);
4489 if (IS_NODESEG(se->type))
4490 total_node_blocks += se->valid_blocks;
4492 /* build discard map only one time */
4493 if (is_set_ckpt_flags(sbi, CP_TRIMMED_FLAG)) {
4494 memset(se->discard_map, 0xff,
4495 SIT_VBLOCK_MAP_SIZE);
4497 memcpy(se->discard_map,
4499 SIT_VBLOCK_MAP_SIZE);
4500 sbi->discard_blks +=
4501 sbi->blocks_per_seg -
4505 if (__is_large_section(sbi))
4506 get_sec_entry(sbi, start)->valid_blocks +=
4509 start_blk += readed;
4510 } while (start_blk < sit_blk_cnt);
4512 down_read(&curseg->journal_rwsem);
4513 for (i = 0; i < sits_in_cursum(journal); i++) {
4514 unsigned int old_valid_blocks;
4516 start = le32_to_cpu(segno_in_journal(journal, i));
4517 if (start >= MAIN_SEGS(sbi)) {
4518 f2fs_err(sbi, "Wrong journal entry on segno %u",
4520 err = -EFSCORRUPTED;
4524 se = &sit_i->sentries[start];
4525 sit = sit_in_journal(journal, i);
4527 old_valid_blocks = se->valid_blocks;
4528 if (IS_NODESEG(se->type))
4529 total_node_blocks -= old_valid_blocks;
4531 err = check_block_count(sbi, start, &sit);
4534 seg_info_from_raw_sit(se, &sit);
4535 if (IS_NODESEG(se->type))
4536 total_node_blocks += se->valid_blocks;
4538 if (is_set_ckpt_flags(sbi, CP_TRIMMED_FLAG)) {
4539 memset(se->discard_map, 0xff, SIT_VBLOCK_MAP_SIZE);
4541 memcpy(se->discard_map, se->cur_valid_map,
4542 SIT_VBLOCK_MAP_SIZE);
4543 sbi->discard_blks += old_valid_blocks;
4544 sbi->discard_blks -= se->valid_blocks;
4547 if (__is_large_section(sbi)) {
4548 get_sec_entry(sbi, start)->valid_blocks +=
4550 get_sec_entry(sbi, start)->valid_blocks -=
4554 up_read(&curseg->journal_rwsem);
4556 if (!err && total_node_blocks != valid_node_count(sbi)) {
4557 f2fs_err(sbi, "SIT is corrupted node# %u vs %u",
4558 total_node_blocks, valid_node_count(sbi));
4559 err = -EFSCORRUPTED;
4565 static void init_free_segmap(struct f2fs_sb_info *sbi)
4569 struct seg_entry *sentry;
4571 for (start = 0; start < MAIN_SEGS(sbi); start++) {
4572 if (f2fs_usable_blks_in_seg(sbi, start) == 0)
4574 sentry = get_seg_entry(sbi, start);
4575 if (!sentry->valid_blocks)
4576 __set_free(sbi, start);
4578 SIT_I(sbi)->written_valid_blocks +=
4579 sentry->valid_blocks;
4582 /* set use the current segments */
4583 for (type = CURSEG_HOT_DATA; type <= CURSEG_COLD_NODE; type++) {
4584 struct curseg_info *curseg_t = CURSEG_I(sbi, type);
4586 __set_test_and_inuse(sbi, curseg_t->segno);
4590 static void init_dirty_segmap(struct f2fs_sb_info *sbi)
4592 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
4593 struct free_segmap_info *free_i = FREE_I(sbi);
4594 unsigned int segno = 0, offset = 0, secno;
4595 block_t valid_blocks, usable_blks_in_seg;
4596 block_t blks_per_sec = BLKS_PER_SEC(sbi);
4599 /* find dirty segment based on free segmap */
4600 segno = find_next_inuse(free_i, MAIN_SEGS(sbi), offset);
4601 if (segno >= MAIN_SEGS(sbi))
4604 valid_blocks = get_valid_blocks(sbi, segno, false);
4605 usable_blks_in_seg = f2fs_usable_blks_in_seg(sbi, segno);
4606 if (valid_blocks == usable_blks_in_seg || !valid_blocks)
4608 if (valid_blocks > usable_blks_in_seg) {
4609 f2fs_bug_on(sbi, 1);
4612 mutex_lock(&dirty_i->seglist_lock);
4613 __locate_dirty_segment(sbi, segno, DIRTY);
4614 mutex_unlock(&dirty_i->seglist_lock);
4617 if (!__is_large_section(sbi))
4620 mutex_lock(&dirty_i->seglist_lock);
4621 for (segno = 0; segno < MAIN_SEGS(sbi); segno += sbi->segs_per_sec) {
4622 valid_blocks = get_valid_blocks(sbi, segno, true);
4623 secno = GET_SEC_FROM_SEG(sbi, segno);
4625 if (!valid_blocks || valid_blocks == blks_per_sec)
4627 if (IS_CURSEC(sbi, secno))
4629 set_bit(secno, dirty_i->dirty_secmap);
4631 mutex_unlock(&dirty_i->seglist_lock);
4634 static int init_victim_secmap(struct f2fs_sb_info *sbi)
4636 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
4637 unsigned int bitmap_size = f2fs_bitmap_size(MAIN_SECS(sbi));
4639 dirty_i->victim_secmap = f2fs_kvzalloc(sbi, bitmap_size, GFP_KERNEL);
4640 if (!dirty_i->victim_secmap)
4645 static int build_dirty_segmap(struct f2fs_sb_info *sbi)
4647 struct dirty_seglist_info *dirty_i;
4648 unsigned int bitmap_size, i;
4650 /* allocate memory for dirty segments list information */
4651 dirty_i = f2fs_kzalloc(sbi, sizeof(struct dirty_seglist_info),
4656 SM_I(sbi)->dirty_info = dirty_i;
4657 mutex_init(&dirty_i->seglist_lock);
4659 bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi));
4661 for (i = 0; i < NR_DIRTY_TYPE; i++) {
4662 dirty_i->dirty_segmap[i] = f2fs_kvzalloc(sbi, bitmap_size,
4664 if (!dirty_i->dirty_segmap[i])
4668 if (__is_large_section(sbi)) {
4669 bitmap_size = f2fs_bitmap_size(MAIN_SECS(sbi));
4670 dirty_i->dirty_secmap = f2fs_kvzalloc(sbi,
4671 bitmap_size, GFP_KERNEL);
4672 if (!dirty_i->dirty_secmap)
4676 init_dirty_segmap(sbi);
4677 return init_victim_secmap(sbi);
4680 static int sanity_check_curseg(struct f2fs_sb_info *sbi)
4685 * In LFS/SSR curseg, .next_blkoff should point to an unused blkaddr;
4686 * In LFS curseg, all blkaddr after .next_blkoff should be unused.
4688 for (i = 0; i < NR_PERSISTENT_LOG; i++) {
4689 struct curseg_info *curseg = CURSEG_I(sbi, i);
4690 struct seg_entry *se = get_seg_entry(sbi, curseg->segno);
4691 unsigned int blkofs = curseg->next_blkoff;
4693 if (f2fs_sb_has_readonly(sbi) &&
4694 i != CURSEG_HOT_DATA && i != CURSEG_HOT_NODE)
4697 sanity_check_seg_type(sbi, curseg->seg_type);
4699 if (f2fs_test_bit(blkofs, se->cur_valid_map))
4702 if (curseg->alloc_type == SSR)
4705 for (blkofs += 1; blkofs < sbi->blocks_per_seg; blkofs++) {
4706 if (!f2fs_test_bit(blkofs, se->cur_valid_map))
4710 "Current segment's next free block offset is inconsistent with bitmap, logtype:%u, segno:%u, type:%u, next_blkoff:%u, blkofs:%u",
4711 i, curseg->segno, curseg->alloc_type,
4712 curseg->next_blkoff, blkofs);
4713 return -EFSCORRUPTED;
4719 #ifdef CONFIG_BLK_DEV_ZONED
4721 static int check_zone_write_pointer(struct f2fs_sb_info *sbi,
4722 struct f2fs_dev_info *fdev,
4723 struct blk_zone *zone)
4725 unsigned int wp_segno, wp_blkoff, zone_secno, zone_segno, segno;
4726 block_t zone_block, wp_block, last_valid_block;
4727 unsigned int log_sectors_per_block = sbi->log_blocksize - SECTOR_SHIFT;
4729 struct seg_entry *se;
4731 if (zone->type != BLK_ZONE_TYPE_SEQWRITE_REQ)
4734 wp_block = fdev->start_blk + (zone->wp >> log_sectors_per_block);
4735 wp_segno = GET_SEGNO(sbi, wp_block);
4736 wp_blkoff = wp_block - START_BLOCK(sbi, wp_segno);
4737 zone_block = fdev->start_blk + (zone->start >> log_sectors_per_block);
4738 zone_segno = GET_SEGNO(sbi, zone_block);
4739 zone_secno = GET_SEC_FROM_SEG(sbi, zone_segno);
4741 if (zone_segno >= MAIN_SEGS(sbi))
4745 * Skip check of zones cursegs point to, since
4746 * fix_curseg_write_pointer() checks them.
4748 for (i = 0; i < NO_CHECK_TYPE; i++)
4749 if (zone_secno == GET_SEC_FROM_SEG(sbi,
4750 CURSEG_I(sbi, i)->segno))
4754 * Get last valid block of the zone.
4756 last_valid_block = zone_block - 1;
4757 for (s = sbi->segs_per_sec - 1; s >= 0; s--) {
4758 segno = zone_segno + s;
4759 se = get_seg_entry(sbi, segno);
4760 for (b = sbi->blocks_per_seg - 1; b >= 0; b--)
4761 if (f2fs_test_bit(b, se->cur_valid_map)) {
4762 last_valid_block = START_BLOCK(sbi, segno) + b;
4765 if (last_valid_block >= zone_block)
4770 * If last valid block is beyond the write pointer, report the
4771 * inconsistency. This inconsistency does not cause write error
4772 * because the zone will not be selected for write operation until
4773 * it get discarded. Just report it.
4775 if (last_valid_block >= wp_block) {
4776 f2fs_notice(sbi, "Valid block beyond write pointer: "
4777 "valid block[0x%x,0x%x] wp[0x%x,0x%x]",
4778 GET_SEGNO(sbi, last_valid_block),
4779 GET_BLKOFF_FROM_SEG0(sbi, last_valid_block),
4780 wp_segno, wp_blkoff);
4785 * If there is no valid block in the zone and if write pointer is
4786 * not at zone start, reset the write pointer.
4788 if (last_valid_block + 1 == zone_block && zone->wp != zone->start) {
4790 "Zone without valid block has non-zero write "
4791 "pointer. Reset the write pointer: wp[0x%x,0x%x]",
4792 wp_segno, wp_blkoff);
4793 ret = __f2fs_issue_discard_zone(sbi, fdev->bdev, zone_block,
4794 zone->len >> log_sectors_per_block);
4796 f2fs_err(sbi, "Discard zone failed: %s (errno=%d)",
4805 static struct f2fs_dev_info *get_target_zoned_dev(struct f2fs_sb_info *sbi,
4806 block_t zone_blkaddr)
4810 for (i = 0; i < sbi->s_ndevs; i++) {
4811 if (!bdev_is_zoned(FDEV(i).bdev))
4813 if (sbi->s_ndevs == 1 || (FDEV(i).start_blk <= zone_blkaddr &&
4814 zone_blkaddr <= FDEV(i).end_blk))
4821 static int report_one_zone_cb(struct blk_zone *zone, unsigned int idx,
4824 memcpy(data, zone, sizeof(struct blk_zone));
4828 static int fix_curseg_write_pointer(struct f2fs_sb_info *sbi, int type)
4830 struct curseg_info *cs = CURSEG_I(sbi, type);
4831 struct f2fs_dev_info *zbd;
4832 struct blk_zone zone;
4833 unsigned int cs_section, wp_segno, wp_blkoff, wp_sector_off;
4834 block_t cs_zone_block, wp_block;
4835 unsigned int log_sectors_per_block = sbi->log_blocksize - SECTOR_SHIFT;
4836 sector_t zone_sector;
4839 cs_section = GET_SEC_FROM_SEG(sbi, cs->segno);
4840 cs_zone_block = START_BLOCK(sbi, GET_SEG_FROM_SEC(sbi, cs_section));
4842 zbd = get_target_zoned_dev(sbi, cs_zone_block);
4846 /* report zone for the sector the curseg points to */
4847 zone_sector = (sector_t)(cs_zone_block - zbd->start_blk)
4848 << log_sectors_per_block;
4849 err = blkdev_report_zones(zbd->bdev, zone_sector, 1,
4850 report_one_zone_cb, &zone);
4852 f2fs_err(sbi, "Report zone failed: %s errno=(%d)",
4857 if (zone.type != BLK_ZONE_TYPE_SEQWRITE_REQ)
4860 wp_block = zbd->start_blk + (zone.wp >> log_sectors_per_block);
4861 wp_segno = GET_SEGNO(sbi, wp_block);
4862 wp_blkoff = wp_block - START_BLOCK(sbi, wp_segno);
4863 wp_sector_off = zone.wp & GENMASK(log_sectors_per_block - 1, 0);
4865 if (cs->segno == wp_segno && cs->next_blkoff == wp_blkoff &&
4869 f2fs_notice(sbi, "Unaligned curseg[%d] with write pointer: "
4870 "curseg[0x%x,0x%x] wp[0x%x,0x%x]",
4871 type, cs->segno, cs->next_blkoff, wp_segno, wp_blkoff);
4873 f2fs_notice(sbi, "Assign new section to curseg[%d]: "
4874 "curseg[0x%x,0x%x]", type, cs->segno, cs->next_blkoff);
4876 f2fs_allocate_new_section(sbi, type, true);
4878 /* check consistency of the zone curseg pointed to */
4879 if (check_zone_write_pointer(sbi, zbd, &zone))
4882 /* check newly assigned zone */
4883 cs_section = GET_SEC_FROM_SEG(sbi, cs->segno);
4884 cs_zone_block = START_BLOCK(sbi, GET_SEG_FROM_SEC(sbi, cs_section));
4886 zbd = get_target_zoned_dev(sbi, cs_zone_block);
4890 zone_sector = (sector_t)(cs_zone_block - zbd->start_blk)
4891 << log_sectors_per_block;
4892 err = blkdev_report_zones(zbd->bdev, zone_sector, 1,
4893 report_one_zone_cb, &zone);
4895 f2fs_err(sbi, "Report zone failed: %s errno=(%d)",
4900 if (zone.type != BLK_ZONE_TYPE_SEQWRITE_REQ)
4903 if (zone.wp != zone.start) {
4905 "New zone for curseg[%d] is not yet discarded. "
4906 "Reset the zone: curseg[0x%x,0x%x]",
4907 type, cs->segno, cs->next_blkoff);
4908 err = __f2fs_issue_discard_zone(sbi, zbd->bdev,
4909 zone_sector >> log_sectors_per_block,
4910 zone.len >> log_sectors_per_block);
4912 f2fs_err(sbi, "Discard zone failed: %s (errno=%d)",
4921 int f2fs_fix_curseg_write_pointer(struct f2fs_sb_info *sbi)
4925 for (i = 0; i < NR_PERSISTENT_LOG; i++) {
4926 ret = fix_curseg_write_pointer(sbi, i);
4934 struct check_zone_write_pointer_args {
4935 struct f2fs_sb_info *sbi;
4936 struct f2fs_dev_info *fdev;
4939 static int check_zone_write_pointer_cb(struct blk_zone *zone, unsigned int idx,
4942 struct check_zone_write_pointer_args *args;
4944 args = (struct check_zone_write_pointer_args *)data;
4946 return check_zone_write_pointer(args->sbi, args->fdev, zone);
4949 int f2fs_check_write_pointer(struct f2fs_sb_info *sbi)
4952 struct check_zone_write_pointer_args args;
4954 for (i = 0; i < sbi->s_ndevs; i++) {
4955 if (!bdev_is_zoned(FDEV(i).bdev))
4959 args.fdev = &FDEV(i);
4960 ret = blkdev_report_zones(FDEV(i).bdev, 0, BLK_ALL_ZONES,
4961 check_zone_write_pointer_cb, &args);
4969 static bool is_conv_zone(struct f2fs_sb_info *sbi, unsigned int zone_idx,
4970 unsigned int dev_idx)
4972 if (!bdev_is_zoned(FDEV(dev_idx).bdev))
4974 return !test_bit(zone_idx, FDEV(dev_idx).blkz_seq);
4977 /* Return the zone index in the given device */
4978 static unsigned int get_zone_idx(struct f2fs_sb_info *sbi, unsigned int secno,
4981 block_t sec_start_blkaddr = START_BLOCK(sbi, GET_SEG_FROM_SEC(sbi, secno));
4983 return (sec_start_blkaddr - FDEV(dev_idx).start_blk) >>
4984 sbi->log_blocks_per_blkz;
4988 * Return the usable segments in a section based on the zone's
4989 * corresponding zone capacity. Zone is equal to a section.
4991 static inline unsigned int f2fs_usable_zone_segs_in_sec(
4992 struct f2fs_sb_info *sbi, unsigned int segno)
4994 unsigned int dev_idx, zone_idx, unusable_segs_in_sec;
4996 dev_idx = f2fs_target_device_index(sbi, START_BLOCK(sbi, segno));
4997 zone_idx = get_zone_idx(sbi, GET_SEC_FROM_SEG(sbi, segno), dev_idx);
4999 /* Conventional zone's capacity is always equal to zone size */
5000 if (is_conv_zone(sbi, zone_idx, dev_idx))
5001 return sbi->segs_per_sec;
5004 * If the zone_capacity_blocks array is NULL, then zone capacity
5005 * is equal to the zone size for all zones
5007 if (!FDEV(dev_idx).zone_capacity_blocks)
5008 return sbi->segs_per_sec;
5010 /* Get the segment count beyond zone capacity block */
5011 unusable_segs_in_sec = (sbi->blocks_per_blkz -
5012 FDEV(dev_idx).zone_capacity_blocks[zone_idx]) >>
5013 sbi->log_blocks_per_seg;
5014 return sbi->segs_per_sec - unusable_segs_in_sec;
5018 * Return the number of usable blocks in a segment. The number of blocks
5019 * returned is always equal to the number of blocks in a segment for
5020 * segments fully contained within a sequential zone capacity or a
5021 * conventional zone. For segments partially contained in a sequential
5022 * zone capacity, the number of usable blocks up to the zone capacity
5023 * is returned. 0 is returned in all other cases.
5025 static inline unsigned int f2fs_usable_zone_blks_in_seg(
5026 struct f2fs_sb_info *sbi, unsigned int segno)
5028 block_t seg_start, sec_start_blkaddr, sec_cap_blkaddr;
5029 unsigned int zone_idx, dev_idx, secno;
5031 secno = GET_SEC_FROM_SEG(sbi, segno);
5032 seg_start = START_BLOCK(sbi, segno);
5033 dev_idx = f2fs_target_device_index(sbi, seg_start);
5034 zone_idx = get_zone_idx(sbi, secno, dev_idx);
5037 * Conventional zone's capacity is always equal to zone size,
5038 * so, blocks per segment is unchanged.
5040 if (is_conv_zone(sbi, zone_idx, dev_idx))
5041 return sbi->blocks_per_seg;
5043 if (!FDEV(dev_idx).zone_capacity_blocks)
5044 return sbi->blocks_per_seg;
5046 sec_start_blkaddr = START_BLOCK(sbi, GET_SEG_FROM_SEC(sbi, secno));
5047 sec_cap_blkaddr = sec_start_blkaddr +
5048 FDEV(dev_idx).zone_capacity_blocks[zone_idx];
5051 * If segment starts before zone capacity and spans beyond
5052 * zone capacity, then usable blocks are from seg start to
5053 * zone capacity. If the segment starts after the zone capacity,
5054 * then there are no usable blocks.
5056 if (seg_start >= sec_cap_blkaddr)
5058 if (seg_start + sbi->blocks_per_seg > sec_cap_blkaddr)
5059 return sec_cap_blkaddr - seg_start;
5061 return sbi->blocks_per_seg;
5064 int f2fs_fix_curseg_write_pointer(struct f2fs_sb_info *sbi)
5069 int f2fs_check_write_pointer(struct f2fs_sb_info *sbi)
5074 static inline unsigned int f2fs_usable_zone_blks_in_seg(struct f2fs_sb_info *sbi,
5080 static inline unsigned int f2fs_usable_zone_segs_in_sec(struct f2fs_sb_info *sbi,
5086 unsigned int f2fs_usable_blks_in_seg(struct f2fs_sb_info *sbi,
5089 if (f2fs_sb_has_blkzoned(sbi))
5090 return f2fs_usable_zone_blks_in_seg(sbi, segno);
5092 return sbi->blocks_per_seg;
5095 unsigned int f2fs_usable_segs_in_sec(struct f2fs_sb_info *sbi,
5098 if (f2fs_sb_has_blkzoned(sbi))
5099 return f2fs_usable_zone_segs_in_sec(sbi, segno);
5101 return sbi->segs_per_sec;
5105 * Update min, max modified time for cost-benefit GC algorithm
5107 static void init_min_max_mtime(struct f2fs_sb_info *sbi)
5109 struct sit_info *sit_i = SIT_I(sbi);
5112 down_write(&sit_i->sentry_lock);
5114 sit_i->min_mtime = ULLONG_MAX;
5116 for (segno = 0; segno < MAIN_SEGS(sbi); segno += sbi->segs_per_sec) {
5118 unsigned long long mtime = 0;
5120 for (i = 0; i < sbi->segs_per_sec; i++)
5121 mtime += get_seg_entry(sbi, segno + i)->mtime;
5123 mtime = div_u64(mtime, sbi->segs_per_sec);
5125 if (sit_i->min_mtime > mtime)
5126 sit_i->min_mtime = mtime;
5128 sit_i->max_mtime = get_mtime(sbi, false);
5129 sit_i->dirty_max_mtime = 0;
5130 up_write(&sit_i->sentry_lock);
5133 int f2fs_build_segment_manager(struct f2fs_sb_info *sbi)
5135 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
5136 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
5137 struct f2fs_sm_info *sm_info;
5140 sm_info = f2fs_kzalloc(sbi, sizeof(struct f2fs_sm_info), GFP_KERNEL);
5145 sbi->sm_info = sm_info;
5146 sm_info->seg0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr);
5147 sm_info->main_blkaddr = le32_to_cpu(raw_super->main_blkaddr);
5148 sm_info->segment_count = le32_to_cpu(raw_super->segment_count);
5149 sm_info->reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count);
5150 sm_info->ovp_segments = le32_to_cpu(ckpt->overprov_segment_count);
5151 sm_info->main_segments = le32_to_cpu(raw_super->segment_count_main);
5152 sm_info->ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr);
5153 sm_info->rec_prefree_segments = sm_info->main_segments *
5154 DEF_RECLAIM_PREFREE_SEGMENTS / 100;
5155 if (sm_info->rec_prefree_segments > DEF_MAX_RECLAIM_PREFREE_SEGMENTS)
5156 sm_info->rec_prefree_segments = DEF_MAX_RECLAIM_PREFREE_SEGMENTS;
5158 if (!f2fs_lfs_mode(sbi))
5159 sm_info->ipu_policy = 1 << F2FS_IPU_FSYNC;
5160 sm_info->min_ipu_util = DEF_MIN_IPU_UTIL;
5161 sm_info->min_fsync_blocks = DEF_MIN_FSYNC_BLOCKS;
5162 sm_info->min_seq_blocks = sbi->blocks_per_seg * sbi->segs_per_sec;
5163 sm_info->min_hot_blocks = DEF_MIN_HOT_BLOCKS;
5164 sm_info->min_ssr_sections = reserved_sections(sbi);
5166 INIT_LIST_HEAD(&sm_info->sit_entry_set);
5168 init_rwsem(&sm_info->curseg_lock);
5170 if (!f2fs_readonly(sbi->sb)) {
5171 err = f2fs_create_flush_cmd_control(sbi);
5176 err = create_discard_cmd_control(sbi);
5180 err = build_sit_info(sbi);
5183 err = build_free_segmap(sbi);
5186 err = build_curseg(sbi);
5190 /* reinit free segmap based on SIT */
5191 err = build_sit_entries(sbi);
5195 init_free_segmap(sbi);
5196 err = build_dirty_segmap(sbi);
5200 err = sanity_check_curseg(sbi);
5204 init_min_max_mtime(sbi);
5208 static void discard_dirty_segmap(struct f2fs_sb_info *sbi,
5209 enum dirty_type dirty_type)
5211 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
5213 mutex_lock(&dirty_i->seglist_lock);
5214 kvfree(dirty_i->dirty_segmap[dirty_type]);
5215 dirty_i->nr_dirty[dirty_type] = 0;
5216 mutex_unlock(&dirty_i->seglist_lock);
5219 static void destroy_victim_secmap(struct f2fs_sb_info *sbi)
5221 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
5223 kvfree(dirty_i->victim_secmap);
5226 static void destroy_dirty_segmap(struct f2fs_sb_info *sbi)
5228 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
5234 /* discard pre-free/dirty segments list */
5235 for (i = 0; i < NR_DIRTY_TYPE; i++)
5236 discard_dirty_segmap(sbi, i);
5238 if (__is_large_section(sbi)) {
5239 mutex_lock(&dirty_i->seglist_lock);
5240 kvfree(dirty_i->dirty_secmap);
5241 mutex_unlock(&dirty_i->seglist_lock);
5244 destroy_victim_secmap(sbi);
5245 SM_I(sbi)->dirty_info = NULL;
5249 static void destroy_curseg(struct f2fs_sb_info *sbi)
5251 struct curseg_info *array = SM_I(sbi)->curseg_array;
5256 SM_I(sbi)->curseg_array = NULL;
5257 for (i = 0; i < NR_CURSEG_TYPE; i++) {
5258 kfree(array[i].sum_blk);
5259 kfree(array[i].journal);
5264 static void destroy_free_segmap(struct f2fs_sb_info *sbi)
5266 struct free_segmap_info *free_i = SM_I(sbi)->free_info;
5270 SM_I(sbi)->free_info = NULL;
5271 kvfree(free_i->free_segmap);
5272 kvfree(free_i->free_secmap);
5276 static void destroy_sit_info(struct f2fs_sb_info *sbi)
5278 struct sit_info *sit_i = SIT_I(sbi);
5283 if (sit_i->sentries)
5284 kvfree(sit_i->bitmap);
5285 kfree(sit_i->tmp_map);
5287 kvfree(sit_i->sentries);
5288 kvfree(sit_i->sec_entries);
5289 kvfree(sit_i->dirty_sentries_bitmap);
5291 SM_I(sbi)->sit_info = NULL;
5292 kvfree(sit_i->sit_bitmap);
5293 #ifdef CONFIG_F2FS_CHECK_FS
5294 kvfree(sit_i->sit_bitmap_mir);
5295 kvfree(sit_i->invalid_segmap);
5300 void f2fs_destroy_segment_manager(struct f2fs_sb_info *sbi)
5302 struct f2fs_sm_info *sm_info = SM_I(sbi);
5306 f2fs_destroy_flush_cmd_control(sbi, true);
5307 destroy_discard_cmd_control(sbi);
5308 destroy_dirty_segmap(sbi);
5309 destroy_curseg(sbi);
5310 destroy_free_segmap(sbi);
5311 destroy_sit_info(sbi);
5312 sbi->sm_info = NULL;
5316 int __init f2fs_create_segment_manager_caches(void)
5318 discard_entry_slab = f2fs_kmem_cache_create("f2fs_discard_entry",
5319 sizeof(struct discard_entry));
5320 if (!discard_entry_slab)
5323 discard_cmd_slab = f2fs_kmem_cache_create("f2fs_discard_cmd",
5324 sizeof(struct discard_cmd));
5325 if (!discard_cmd_slab)
5326 goto destroy_discard_entry;
5328 sit_entry_set_slab = f2fs_kmem_cache_create("f2fs_sit_entry_set",
5329 sizeof(struct sit_entry_set));
5330 if (!sit_entry_set_slab)
5331 goto destroy_discard_cmd;
5333 inmem_entry_slab = f2fs_kmem_cache_create("f2fs_inmem_page_entry",
5334 sizeof(struct inmem_pages));
5335 if (!inmem_entry_slab)
5336 goto destroy_sit_entry_set;
5339 destroy_sit_entry_set:
5340 kmem_cache_destroy(sit_entry_set_slab);
5341 destroy_discard_cmd:
5342 kmem_cache_destroy(discard_cmd_slab);
5343 destroy_discard_entry:
5344 kmem_cache_destroy(discard_entry_slab);
5349 void f2fs_destroy_segment_manager_caches(void)
5351 kmem_cache_destroy(sit_entry_set_slab);
5352 kmem_cache_destroy(discard_cmd_slab);
5353 kmem_cache_destroy(discard_entry_slab);
5354 kmem_cache_destroy(inmem_entry_slab);