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>
24 #include <trace/events/f2fs.h>
26 #define __reverse_ffz(x) __reverse_ffs(~(x))
28 static struct kmem_cache *discard_entry_slab;
29 static struct kmem_cache *discard_cmd_slab;
30 static struct kmem_cache *sit_entry_set_slab;
31 static struct kmem_cache *inmem_entry_slab;
33 static unsigned long __reverse_ulong(unsigned char *str)
35 unsigned long tmp = 0;
36 int shift = 24, idx = 0;
38 #if BITS_PER_LONG == 64
42 tmp |= (unsigned long)str[idx++] << shift;
43 shift -= BITS_PER_BYTE;
49 * __reverse_ffs is copied from include/asm-generic/bitops/__ffs.h since
50 * MSB and LSB are reversed in a byte by f2fs_set_bit.
52 static inline unsigned long __reverse_ffs(unsigned long word)
56 #if BITS_PER_LONG == 64
57 if ((word & 0xffffffff00000000UL) == 0)
62 if ((word & 0xffff0000) == 0)
67 if ((word & 0xff00) == 0)
72 if ((word & 0xf0) == 0)
77 if ((word & 0xc) == 0)
82 if ((word & 0x2) == 0)
88 * __find_rev_next(_zero)_bit is copied from lib/find_next_bit.c because
89 * f2fs_set_bit makes MSB and LSB reversed in a byte.
90 * @size must be integral times of unsigned long.
93 * f2fs_set_bit(0, bitmap) => 1000 0000
94 * f2fs_set_bit(7, bitmap) => 0000 0001
96 static unsigned long __find_rev_next_bit(const unsigned long *addr,
97 unsigned long size, unsigned long offset)
99 const unsigned long *p = addr + BIT_WORD(offset);
100 unsigned long result = size;
106 size -= (offset & ~(BITS_PER_LONG - 1));
107 offset %= BITS_PER_LONG;
113 tmp = __reverse_ulong((unsigned char *)p);
115 tmp &= ~0UL >> offset;
116 if (size < BITS_PER_LONG)
117 tmp &= (~0UL << (BITS_PER_LONG - size));
121 if (size <= BITS_PER_LONG)
123 size -= BITS_PER_LONG;
129 return result - size + __reverse_ffs(tmp);
132 static unsigned long __find_rev_next_zero_bit(const unsigned long *addr,
133 unsigned long size, unsigned long offset)
135 const unsigned long *p = addr + BIT_WORD(offset);
136 unsigned long result = size;
142 size -= (offset & ~(BITS_PER_LONG - 1));
143 offset %= BITS_PER_LONG;
149 tmp = __reverse_ulong((unsigned char *)p);
152 tmp |= ~0UL << (BITS_PER_LONG - offset);
153 if (size < BITS_PER_LONG)
158 if (size <= BITS_PER_LONG)
160 size -= BITS_PER_LONG;
166 return result - size + __reverse_ffz(tmp);
169 bool f2fs_need_SSR(struct f2fs_sb_info *sbi)
171 int node_secs = get_blocktype_secs(sbi, F2FS_DIRTY_NODES);
172 int dent_secs = get_blocktype_secs(sbi, F2FS_DIRTY_DENTS);
173 int imeta_secs = get_blocktype_secs(sbi, F2FS_DIRTY_IMETA);
175 if (f2fs_lfs_mode(sbi))
177 if (sbi->gc_mode == GC_URGENT_HIGH)
179 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
182 return free_sections(sbi) <= (node_secs + 2 * dent_secs + imeta_secs +
183 SM_I(sbi)->min_ssr_sections + reserved_sections(sbi));
186 void f2fs_register_inmem_page(struct inode *inode, struct page *page)
188 struct inmem_pages *new;
190 f2fs_trace_pid(page);
192 f2fs_set_page_private(page, ATOMIC_WRITTEN_PAGE);
194 new = f2fs_kmem_cache_alloc(inmem_entry_slab, GFP_NOFS);
196 /* add atomic page indices to the list */
198 INIT_LIST_HEAD(&new->list);
200 /* increase reference count with clean state */
202 mutex_lock(&F2FS_I(inode)->inmem_lock);
203 list_add_tail(&new->list, &F2FS_I(inode)->inmem_pages);
204 inc_page_count(F2FS_I_SB(inode), F2FS_INMEM_PAGES);
205 mutex_unlock(&F2FS_I(inode)->inmem_lock);
207 trace_f2fs_register_inmem_page(page, INMEM);
210 static int __revoke_inmem_pages(struct inode *inode,
211 struct list_head *head, bool drop, bool recover,
214 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
215 struct inmem_pages *cur, *tmp;
218 list_for_each_entry_safe(cur, tmp, head, list) {
219 struct page *page = cur->page;
222 trace_f2fs_commit_inmem_page(page, INMEM_DROP);
226 * to avoid deadlock in between page lock and
229 if (!trylock_page(page))
235 f2fs_wait_on_page_writeback(page, DATA, true, true);
238 struct dnode_of_data dn;
241 trace_f2fs_commit_inmem_page(page, INMEM_REVOKE);
243 set_new_dnode(&dn, inode, NULL, NULL, 0);
244 err = f2fs_get_dnode_of_data(&dn, page->index,
247 if (err == -ENOMEM) {
248 congestion_wait(BLK_RW_ASYNC,
257 err = f2fs_get_node_info(sbi, dn.nid, &ni);
263 if (cur->old_addr == NEW_ADDR) {
264 f2fs_invalidate_blocks(sbi, dn.data_blkaddr);
265 f2fs_update_data_blkaddr(&dn, NEW_ADDR);
267 f2fs_replace_block(sbi, &dn, dn.data_blkaddr,
268 cur->old_addr, ni.version, true, true);
272 /* we don't need to invalidate this in the sccessful status */
273 if (drop || recover) {
274 ClearPageUptodate(page);
275 clear_cold_data(page);
277 f2fs_clear_page_private(page);
278 f2fs_put_page(page, 1);
280 list_del(&cur->list);
281 kmem_cache_free(inmem_entry_slab, cur);
282 dec_page_count(F2FS_I_SB(inode), F2FS_INMEM_PAGES);
287 void f2fs_drop_inmem_pages_all(struct f2fs_sb_info *sbi, bool gc_failure)
289 struct list_head *head = &sbi->inode_list[ATOMIC_FILE];
291 struct f2fs_inode_info *fi;
292 unsigned int count = sbi->atomic_files;
293 unsigned int looped = 0;
295 spin_lock(&sbi->inode_lock[ATOMIC_FILE]);
296 if (list_empty(head)) {
297 spin_unlock(&sbi->inode_lock[ATOMIC_FILE]);
300 fi = list_first_entry(head, struct f2fs_inode_info, inmem_ilist);
301 inode = igrab(&fi->vfs_inode);
303 list_move_tail(&fi->inmem_ilist, head);
304 spin_unlock(&sbi->inode_lock[ATOMIC_FILE]);
308 if (!fi->i_gc_failures[GC_FAILURE_ATOMIC])
311 set_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST);
312 f2fs_drop_inmem_pages(inode);
316 congestion_wait(BLK_RW_ASYNC, DEFAULT_IO_TIMEOUT);
319 if (++looped >= count)
325 void f2fs_drop_inmem_pages(struct inode *inode)
327 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
328 struct f2fs_inode_info *fi = F2FS_I(inode);
330 while (!list_empty(&fi->inmem_pages)) {
331 mutex_lock(&fi->inmem_lock);
332 __revoke_inmem_pages(inode, &fi->inmem_pages,
334 mutex_unlock(&fi->inmem_lock);
337 fi->i_gc_failures[GC_FAILURE_ATOMIC] = 0;
339 spin_lock(&sbi->inode_lock[ATOMIC_FILE]);
340 if (!list_empty(&fi->inmem_ilist))
341 list_del_init(&fi->inmem_ilist);
342 if (f2fs_is_atomic_file(inode)) {
343 clear_inode_flag(inode, FI_ATOMIC_FILE);
346 spin_unlock(&sbi->inode_lock[ATOMIC_FILE]);
349 void f2fs_drop_inmem_page(struct inode *inode, struct page *page)
351 struct f2fs_inode_info *fi = F2FS_I(inode);
352 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
353 struct list_head *head = &fi->inmem_pages;
354 struct inmem_pages *cur = NULL;
356 f2fs_bug_on(sbi, !IS_ATOMIC_WRITTEN_PAGE(page));
358 mutex_lock(&fi->inmem_lock);
359 list_for_each_entry(cur, head, list) {
360 if (cur->page == page)
364 f2fs_bug_on(sbi, list_empty(head) || cur->page != page);
365 list_del(&cur->list);
366 mutex_unlock(&fi->inmem_lock);
368 dec_page_count(sbi, F2FS_INMEM_PAGES);
369 kmem_cache_free(inmem_entry_slab, cur);
371 ClearPageUptodate(page);
372 f2fs_clear_page_private(page);
373 f2fs_put_page(page, 0);
375 trace_f2fs_commit_inmem_page(page, INMEM_INVALIDATE);
378 static int __f2fs_commit_inmem_pages(struct inode *inode)
380 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
381 struct f2fs_inode_info *fi = F2FS_I(inode);
382 struct inmem_pages *cur, *tmp;
383 struct f2fs_io_info fio = {
388 .op_flags = REQ_SYNC | REQ_PRIO,
389 .io_type = FS_DATA_IO,
391 struct list_head revoke_list;
392 bool submit_bio = false;
395 INIT_LIST_HEAD(&revoke_list);
397 list_for_each_entry_safe(cur, tmp, &fi->inmem_pages, list) {
398 struct page *page = cur->page;
401 if (page->mapping == inode->i_mapping) {
402 trace_f2fs_commit_inmem_page(page, INMEM);
404 f2fs_wait_on_page_writeback(page, DATA, true, true);
406 set_page_dirty(page);
407 if (clear_page_dirty_for_io(page)) {
408 inode_dec_dirty_pages(inode);
409 f2fs_remove_dirty_inode(inode);
413 fio.old_blkaddr = NULL_ADDR;
414 fio.encrypted_page = NULL;
415 fio.need_lock = LOCK_DONE;
416 err = f2fs_do_write_data_page(&fio);
418 if (err == -ENOMEM) {
419 congestion_wait(BLK_RW_ASYNC,
427 /* record old blkaddr for revoking */
428 cur->old_addr = fio.old_blkaddr;
432 list_move_tail(&cur->list, &revoke_list);
436 f2fs_submit_merged_write_cond(sbi, inode, NULL, 0, DATA);
440 * try to revoke all committed pages, but still we could fail
441 * due to no memory or other reason, if that happened, EAGAIN
442 * will be returned, which means in such case, transaction is
443 * already not integrity, caller should use journal to do the
444 * recovery or rewrite & commit last transaction. For other
445 * error number, revoking was done by filesystem itself.
447 err = __revoke_inmem_pages(inode, &revoke_list,
450 /* drop all uncommitted pages */
451 __revoke_inmem_pages(inode, &fi->inmem_pages,
454 __revoke_inmem_pages(inode, &revoke_list,
455 false, false, false);
461 int f2fs_commit_inmem_pages(struct inode *inode)
463 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
464 struct f2fs_inode_info *fi = F2FS_I(inode);
467 f2fs_balance_fs(sbi, true);
469 down_write(&fi->i_gc_rwsem[WRITE]);
472 set_inode_flag(inode, FI_ATOMIC_COMMIT);
474 mutex_lock(&fi->inmem_lock);
475 err = __f2fs_commit_inmem_pages(inode);
476 mutex_unlock(&fi->inmem_lock);
478 clear_inode_flag(inode, FI_ATOMIC_COMMIT);
481 up_write(&fi->i_gc_rwsem[WRITE]);
487 * This function balances dirty node and dentry pages.
488 * In addition, it controls garbage collection.
490 void f2fs_balance_fs(struct f2fs_sb_info *sbi, bool need)
492 if (time_to_inject(sbi, FAULT_CHECKPOINT)) {
493 f2fs_show_injection_info(sbi, FAULT_CHECKPOINT);
494 f2fs_stop_checkpoint(sbi, false);
497 /* balance_fs_bg is able to be pending */
498 if (need && excess_cached_nats(sbi))
499 f2fs_balance_fs_bg(sbi, false);
501 if (!f2fs_is_checkpoint_ready(sbi))
505 * We should do GC or end up with checkpoint, if there are so many dirty
506 * dir/node pages without enough free segments.
508 if (has_not_enough_free_secs(sbi, 0, 0)) {
509 down_write(&sbi->gc_lock);
510 f2fs_gc(sbi, false, false, NULL_SEGNO);
514 void f2fs_balance_fs_bg(struct f2fs_sb_info *sbi, bool from_bg)
516 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
519 /* try to shrink extent cache when there is no enough memory */
520 if (!f2fs_available_free_memory(sbi, EXTENT_CACHE))
521 f2fs_shrink_extent_tree(sbi, EXTENT_CACHE_SHRINK_NUMBER);
523 /* check the # of cached NAT entries */
524 if (!f2fs_available_free_memory(sbi, NAT_ENTRIES))
525 f2fs_try_to_free_nats(sbi, NAT_ENTRY_PER_BLOCK);
527 if (!f2fs_available_free_memory(sbi, FREE_NIDS))
528 f2fs_try_to_free_nids(sbi, MAX_FREE_NIDS);
530 f2fs_build_free_nids(sbi, false, false);
532 if (!is_idle(sbi, REQ_TIME) &&
533 (!excess_dirty_nats(sbi) && !excess_dirty_nodes(sbi)))
536 /* checkpoint is the only way to shrink partial cached entries */
537 if (!f2fs_available_free_memory(sbi, NAT_ENTRIES) ||
538 !f2fs_available_free_memory(sbi, INO_ENTRIES) ||
539 excess_prefree_segs(sbi) ||
540 excess_dirty_nats(sbi) ||
541 excess_dirty_nodes(sbi) ||
542 f2fs_time_over(sbi, CP_TIME)) {
543 if (test_opt(sbi, DATA_FLUSH) && from_bg) {
544 struct blk_plug plug;
546 mutex_lock(&sbi->flush_lock);
548 blk_start_plug(&plug);
549 f2fs_sync_dirty_inodes(sbi, FILE_INODE);
550 blk_finish_plug(&plug);
552 mutex_unlock(&sbi->flush_lock);
554 f2fs_sync_fs(sbi->sb, true);
555 stat_inc_bg_cp_count(sbi->stat_info);
559 static int __submit_flush_wait(struct f2fs_sb_info *sbi,
560 struct block_device *bdev)
565 bio = f2fs_bio_alloc(sbi, 0, false);
569 bio->bi_opf = REQ_OP_WRITE | REQ_SYNC | REQ_PREFLUSH;
570 bio_set_dev(bio, bdev);
571 ret = submit_bio_wait(bio);
574 trace_f2fs_issue_flush(bdev, test_opt(sbi, NOBARRIER),
575 test_opt(sbi, FLUSH_MERGE), ret);
579 static int submit_flush_wait(struct f2fs_sb_info *sbi, nid_t ino)
584 if (!f2fs_is_multi_device(sbi))
585 return __submit_flush_wait(sbi, sbi->sb->s_bdev);
587 for (i = 0; i < sbi->s_ndevs; i++) {
588 if (!f2fs_is_dirty_device(sbi, ino, i, FLUSH_INO))
590 ret = __submit_flush_wait(sbi, FDEV(i).bdev);
597 static int issue_flush_thread(void *data)
599 struct f2fs_sb_info *sbi = data;
600 struct flush_cmd_control *fcc = SM_I(sbi)->fcc_info;
601 wait_queue_head_t *q = &fcc->flush_wait_queue;
603 if (kthread_should_stop())
606 sb_start_intwrite(sbi->sb);
608 if (!llist_empty(&fcc->issue_list)) {
609 struct flush_cmd *cmd, *next;
612 fcc->dispatch_list = llist_del_all(&fcc->issue_list);
613 fcc->dispatch_list = llist_reverse_order(fcc->dispatch_list);
615 cmd = llist_entry(fcc->dispatch_list, struct flush_cmd, llnode);
617 ret = submit_flush_wait(sbi, cmd->ino);
618 atomic_inc(&fcc->issued_flush);
620 llist_for_each_entry_safe(cmd, next,
621 fcc->dispatch_list, llnode) {
623 complete(&cmd->wait);
625 fcc->dispatch_list = NULL;
628 sb_end_intwrite(sbi->sb);
630 wait_event_interruptible(*q,
631 kthread_should_stop() || !llist_empty(&fcc->issue_list));
635 int f2fs_issue_flush(struct f2fs_sb_info *sbi, nid_t ino)
637 struct flush_cmd_control *fcc = SM_I(sbi)->fcc_info;
638 struct flush_cmd cmd;
641 if (test_opt(sbi, NOBARRIER))
644 if (!test_opt(sbi, FLUSH_MERGE)) {
645 atomic_inc(&fcc->queued_flush);
646 ret = submit_flush_wait(sbi, ino);
647 atomic_dec(&fcc->queued_flush);
648 atomic_inc(&fcc->issued_flush);
652 if (atomic_inc_return(&fcc->queued_flush) == 1 ||
653 f2fs_is_multi_device(sbi)) {
654 ret = submit_flush_wait(sbi, ino);
655 atomic_dec(&fcc->queued_flush);
657 atomic_inc(&fcc->issued_flush);
662 init_completion(&cmd.wait);
664 llist_add(&cmd.llnode, &fcc->issue_list);
666 /* update issue_list before we wake up issue_flush thread */
669 if (waitqueue_active(&fcc->flush_wait_queue))
670 wake_up(&fcc->flush_wait_queue);
672 if (fcc->f2fs_issue_flush) {
673 wait_for_completion(&cmd.wait);
674 atomic_dec(&fcc->queued_flush);
676 struct llist_node *list;
678 list = llist_del_all(&fcc->issue_list);
680 wait_for_completion(&cmd.wait);
681 atomic_dec(&fcc->queued_flush);
683 struct flush_cmd *tmp, *next;
685 ret = submit_flush_wait(sbi, ino);
687 llist_for_each_entry_safe(tmp, next, list, llnode) {
690 atomic_dec(&fcc->queued_flush);
694 complete(&tmp->wait);
702 int f2fs_create_flush_cmd_control(struct f2fs_sb_info *sbi)
704 dev_t dev = sbi->sb->s_bdev->bd_dev;
705 struct flush_cmd_control *fcc;
708 if (SM_I(sbi)->fcc_info) {
709 fcc = SM_I(sbi)->fcc_info;
710 if (fcc->f2fs_issue_flush)
715 fcc = f2fs_kzalloc(sbi, sizeof(struct flush_cmd_control), GFP_KERNEL);
718 atomic_set(&fcc->issued_flush, 0);
719 atomic_set(&fcc->queued_flush, 0);
720 init_waitqueue_head(&fcc->flush_wait_queue);
721 init_llist_head(&fcc->issue_list);
722 SM_I(sbi)->fcc_info = fcc;
723 if (!test_opt(sbi, FLUSH_MERGE))
727 fcc->f2fs_issue_flush = kthread_run(issue_flush_thread, sbi,
728 "f2fs_flush-%u:%u", MAJOR(dev), MINOR(dev));
729 if (IS_ERR(fcc->f2fs_issue_flush)) {
730 err = PTR_ERR(fcc->f2fs_issue_flush);
732 SM_I(sbi)->fcc_info = NULL;
739 void f2fs_destroy_flush_cmd_control(struct f2fs_sb_info *sbi, bool free)
741 struct flush_cmd_control *fcc = SM_I(sbi)->fcc_info;
743 if (fcc && fcc->f2fs_issue_flush) {
744 struct task_struct *flush_thread = fcc->f2fs_issue_flush;
746 fcc->f2fs_issue_flush = NULL;
747 kthread_stop(flush_thread);
751 SM_I(sbi)->fcc_info = NULL;
755 int f2fs_flush_device_cache(struct f2fs_sb_info *sbi)
759 if (!f2fs_is_multi_device(sbi))
762 for (i = 1; i < sbi->s_ndevs; i++) {
763 if (!f2fs_test_bit(i, (char *)&sbi->dirty_device))
765 ret = __submit_flush_wait(sbi, FDEV(i).bdev);
769 spin_lock(&sbi->dev_lock);
770 f2fs_clear_bit(i, (char *)&sbi->dirty_device);
771 spin_unlock(&sbi->dev_lock);
777 static void __locate_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno,
778 enum dirty_type dirty_type)
780 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
782 /* need not be added */
783 if (IS_CURSEG(sbi, segno))
786 if (!test_and_set_bit(segno, dirty_i->dirty_segmap[dirty_type]))
787 dirty_i->nr_dirty[dirty_type]++;
789 if (dirty_type == DIRTY) {
790 struct seg_entry *sentry = get_seg_entry(sbi, segno);
791 enum dirty_type t = sentry->type;
793 if (unlikely(t >= DIRTY)) {
797 if (!test_and_set_bit(segno, dirty_i->dirty_segmap[t]))
798 dirty_i->nr_dirty[t]++;
800 if (__is_large_section(sbi)) {
801 unsigned int secno = GET_SEC_FROM_SEG(sbi, segno);
802 block_t valid_blocks =
803 get_valid_blocks(sbi, segno, true);
805 f2fs_bug_on(sbi, unlikely(!valid_blocks ||
806 valid_blocks == BLKS_PER_SEC(sbi)));
808 if (!IS_CURSEC(sbi, secno))
809 set_bit(secno, dirty_i->dirty_secmap);
814 static void __remove_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno,
815 enum dirty_type dirty_type)
817 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
818 block_t valid_blocks;
820 if (test_and_clear_bit(segno, dirty_i->dirty_segmap[dirty_type]))
821 dirty_i->nr_dirty[dirty_type]--;
823 if (dirty_type == DIRTY) {
824 struct seg_entry *sentry = get_seg_entry(sbi, segno);
825 enum dirty_type t = sentry->type;
827 if (test_and_clear_bit(segno, dirty_i->dirty_segmap[t]))
828 dirty_i->nr_dirty[t]--;
830 valid_blocks = get_valid_blocks(sbi, segno, true);
831 if (valid_blocks == 0) {
832 clear_bit(GET_SEC_FROM_SEG(sbi, segno),
833 dirty_i->victim_secmap);
834 #ifdef CONFIG_F2FS_CHECK_FS
835 clear_bit(segno, SIT_I(sbi)->invalid_segmap);
838 if (__is_large_section(sbi)) {
839 unsigned int secno = GET_SEC_FROM_SEG(sbi, segno);
842 valid_blocks == BLKS_PER_SEC(sbi)) {
843 clear_bit(secno, dirty_i->dirty_secmap);
847 if (!IS_CURSEC(sbi, secno))
848 set_bit(secno, dirty_i->dirty_secmap);
854 * Should not occur error such as -ENOMEM.
855 * Adding dirty entry into seglist is not critical operation.
856 * If a given segment is one of current working segments, it won't be added.
858 static void locate_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno)
860 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
861 unsigned short valid_blocks, ckpt_valid_blocks;
862 unsigned int usable_blocks;
864 if (segno == NULL_SEGNO || IS_CURSEG(sbi, segno))
867 usable_blocks = f2fs_usable_blks_in_seg(sbi, segno);
868 mutex_lock(&dirty_i->seglist_lock);
870 valid_blocks = get_valid_blocks(sbi, segno, false);
871 ckpt_valid_blocks = get_ckpt_valid_blocks(sbi, segno);
873 if (valid_blocks == 0 && (!is_sbi_flag_set(sbi, SBI_CP_DISABLED) ||
874 ckpt_valid_blocks == usable_blocks)) {
875 __locate_dirty_segment(sbi, segno, PRE);
876 __remove_dirty_segment(sbi, segno, DIRTY);
877 } else if (valid_blocks < usable_blocks) {
878 __locate_dirty_segment(sbi, segno, DIRTY);
880 /* Recovery routine with SSR needs this */
881 __remove_dirty_segment(sbi, segno, DIRTY);
884 mutex_unlock(&dirty_i->seglist_lock);
887 /* This moves currently empty dirty blocks to prefree. Must hold seglist_lock */
888 void f2fs_dirty_to_prefree(struct f2fs_sb_info *sbi)
890 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
893 mutex_lock(&dirty_i->seglist_lock);
894 for_each_set_bit(segno, dirty_i->dirty_segmap[DIRTY], MAIN_SEGS(sbi)) {
895 if (get_valid_blocks(sbi, segno, false))
897 if (IS_CURSEG(sbi, segno))
899 __locate_dirty_segment(sbi, segno, PRE);
900 __remove_dirty_segment(sbi, segno, DIRTY);
902 mutex_unlock(&dirty_i->seglist_lock);
905 block_t f2fs_get_unusable_blocks(struct f2fs_sb_info *sbi)
908 (overprovision_segments(sbi) - reserved_segments(sbi));
909 block_t ovp_holes = ovp_hole_segs << sbi->log_blocks_per_seg;
910 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
911 block_t holes[2] = {0, 0}; /* DATA and NODE */
913 struct seg_entry *se;
916 mutex_lock(&dirty_i->seglist_lock);
917 for_each_set_bit(segno, dirty_i->dirty_segmap[DIRTY], MAIN_SEGS(sbi)) {
918 se = get_seg_entry(sbi, segno);
919 if (IS_NODESEG(se->type))
920 holes[NODE] += f2fs_usable_blks_in_seg(sbi, segno) -
923 holes[DATA] += f2fs_usable_blks_in_seg(sbi, segno) -
926 mutex_unlock(&dirty_i->seglist_lock);
928 unusable = holes[DATA] > holes[NODE] ? holes[DATA] : holes[NODE];
929 if (unusable > ovp_holes)
930 return unusable - ovp_holes;
934 int f2fs_disable_cp_again(struct f2fs_sb_info *sbi, block_t unusable)
937 (overprovision_segments(sbi) - reserved_segments(sbi));
938 if (unusable > F2FS_OPTION(sbi).unusable_cap)
940 if (is_sbi_flag_set(sbi, SBI_CP_DISABLED_QUICK) &&
941 dirty_segments(sbi) > ovp_hole_segs)
946 /* This is only used by SBI_CP_DISABLED */
947 static unsigned int get_free_segment(struct f2fs_sb_info *sbi)
949 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
950 unsigned int segno = 0;
952 mutex_lock(&dirty_i->seglist_lock);
953 for_each_set_bit(segno, dirty_i->dirty_segmap[DIRTY], MAIN_SEGS(sbi)) {
954 if (get_valid_blocks(sbi, segno, false))
956 if (get_ckpt_valid_blocks(sbi, segno))
958 mutex_unlock(&dirty_i->seglist_lock);
961 mutex_unlock(&dirty_i->seglist_lock);
965 static struct discard_cmd *__create_discard_cmd(struct f2fs_sb_info *sbi,
966 struct block_device *bdev, block_t lstart,
967 block_t start, block_t len)
969 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
970 struct list_head *pend_list;
971 struct discard_cmd *dc;
973 f2fs_bug_on(sbi, !len);
975 pend_list = &dcc->pend_list[plist_idx(len)];
977 dc = f2fs_kmem_cache_alloc(discard_cmd_slab, GFP_NOFS);
978 INIT_LIST_HEAD(&dc->list);
987 init_completion(&dc->wait);
988 list_add_tail(&dc->list, pend_list);
989 spin_lock_init(&dc->lock);
991 atomic_inc(&dcc->discard_cmd_cnt);
992 dcc->undiscard_blks += len;
997 static struct discard_cmd *__attach_discard_cmd(struct f2fs_sb_info *sbi,
998 struct block_device *bdev, block_t lstart,
999 block_t start, block_t len,
1000 struct rb_node *parent, struct rb_node **p,
1003 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1004 struct discard_cmd *dc;
1006 dc = __create_discard_cmd(sbi, bdev, lstart, start, len);
1008 rb_link_node(&dc->rb_node, parent, p);
1009 rb_insert_color_cached(&dc->rb_node, &dcc->root, leftmost);
1014 static void __detach_discard_cmd(struct discard_cmd_control *dcc,
1015 struct discard_cmd *dc)
1017 if (dc->state == D_DONE)
1018 atomic_sub(dc->queued, &dcc->queued_discard);
1020 list_del(&dc->list);
1021 rb_erase_cached(&dc->rb_node, &dcc->root);
1022 dcc->undiscard_blks -= dc->len;
1024 kmem_cache_free(discard_cmd_slab, dc);
1026 atomic_dec(&dcc->discard_cmd_cnt);
1029 static void __remove_discard_cmd(struct f2fs_sb_info *sbi,
1030 struct discard_cmd *dc)
1032 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1033 unsigned long flags;
1035 trace_f2fs_remove_discard(dc->bdev, dc->start, dc->len);
1037 spin_lock_irqsave(&dc->lock, flags);
1039 spin_unlock_irqrestore(&dc->lock, flags);
1042 spin_unlock_irqrestore(&dc->lock, flags);
1044 f2fs_bug_on(sbi, dc->ref);
1046 if (dc->error == -EOPNOTSUPP)
1051 "%sF2FS-fs (%s): Issue discard(%u, %u, %u) failed, ret: %d",
1052 KERN_INFO, sbi->sb->s_id,
1053 dc->lstart, dc->start, dc->len, dc->error);
1054 __detach_discard_cmd(dcc, dc);
1057 static void f2fs_submit_discard_endio(struct bio *bio)
1059 struct discard_cmd *dc = (struct discard_cmd *)bio->bi_private;
1060 unsigned long flags;
1062 spin_lock_irqsave(&dc->lock, flags);
1064 dc->error = blk_status_to_errno(bio->bi_status);
1066 if (!dc->bio_ref && dc->state == D_SUBMIT) {
1068 complete_all(&dc->wait);
1070 spin_unlock_irqrestore(&dc->lock, flags);
1074 static void __check_sit_bitmap(struct f2fs_sb_info *sbi,
1075 block_t start, block_t end)
1077 #ifdef CONFIG_F2FS_CHECK_FS
1078 struct seg_entry *sentry;
1080 block_t blk = start;
1081 unsigned long offset, size, max_blocks = sbi->blocks_per_seg;
1085 segno = GET_SEGNO(sbi, blk);
1086 sentry = get_seg_entry(sbi, segno);
1087 offset = GET_BLKOFF_FROM_SEG0(sbi, blk);
1089 if (end < START_BLOCK(sbi, segno + 1))
1090 size = GET_BLKOFF_FROM_SEG0(sbi, end);
1093 map = (unsigned long *)(sentry->cur_valid_map);
1094 offset = __find_rev_next_bit(map, size, offset);
1095 f2fs_bug_on(sbi, offset != size);
1096 blk = START_BLOCK(sbi, segno + 1);
1101 static void __init_discard_policy(struct f2fs_sb_info *sbi,
1102 struct discard_policy *dpolicy,
1103 int discard_type, unsigned int granularity)
1106 dpolicy->type = discard_type;
1107 dpolicy->sync = true;
1108 dpolicy->ordered = false;
1109 dpolicy->granularity = granularity;
1111 dpolicy->max_requests = DEF_MAX_DISCARD_REQUEST;
1112 dpolicy->io_aware_gran = MAX_PLIST_NUM;
1113 dpolicy->timeout = false;
1115 if (discard_type == DPOLICY_BG) {
1116 dpolicy->min_interval = DEF_MIN_DISCARD_ISSUE_TIME;
1117 dpolicy->mid_interval = DEF_MID_DISCARD_ISSUE_TIME;
1118 dpolicy->max_interval = DEF_MAX_DISCARD_ISSUE_TIME;
1119 dpolicy->io_aware = true;
1120 dpolicy->sync = false;
1121 dpolicy->ordered = true;
1122 if (utilization(sbi) > DEF_DISCARD_URGENT_UTIL) {
1123 dpolicy->granularity = 1;
1124 dpolicy->max_interval = DEF_MIN_DISCARD_ISSUE_TIME;
1126 } else if (discard_type == DPOLICY_FORCE) {
1127 dpolicy->min_interval = DEF_MIN_DISCARD_ISSUE_TIME;
1128 dpolicy->mid_interval = DEF_MID_DISCARD_ISSUE_TIME;
1129 dpolicy->max_interval = DEF_MAX_DISCARD_ISSUE_TIME;
1130 dpolicy->io_aware = false;
1131 } else if (discard_type == DPOLICY_FSTRIM) {
1132 dpolicy->io_aware = false;
1133 } else if (discard_type == DPOLICY_UMOUNT) {
1134 dpolicy->io_aware = false;
1135 /* we need to issue all to keep CP_TRIMMED_FLAG */
1136 dpolicy->granularity = 1;
1137 dpolicy->timeout = true;
1141 static void __update_discard_tree_range(struct f2fs_sb_info *sbi,
1142 struct block_device *bdev, block_t lstart,
1143 block_t start, block_t len);
1144 /* this function is copied from blkdev_issue_discard from block/blk-lib.c */
1145 static int __submit_discard_cmd(struct f2fs_sb_info *sbi,
1146 struct discard_policy *dpolicy,
1147 struct discard_cmd *dc,
1148 unsigned int *issued)
1150 struct block_device *bdev = dc->bdev;
1151 struct request_queue *q = bdev_get_queue(bdev);
1152 unsigned int max_discard_blocks =
1153 SECTOR_TO_BLOCK(q->limits.max_discard_sectors);
1154 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1155 struct list_head *wait_list = (dpolicy->type == DPOLICY_FSTRIM) ?
1156 &(dcc->fstrim_list) : &(dcc->wait_list);
1157 int flag = dpolicy->sync ? REQ_SYNC : 0;
1158 block_t lstart, start, len, total_len;
1161 if (dc->state != D_PREP)
1164 if (is_sbi_flag_set(sbi, SBI_NEED_FSCK))
1167 trace_f2fs_issue_discard(bdev, dc->start, dc->len);
1169 lstart = dc->lstart;
1176 while (total_len && *issued < dpolicy->max_requests && !err) {
1177 struct bio *bio = NULL;
1178 unsigned long flags;
1181 if (len > max_discard_blocks) {
1182 len = max_discard_blocks;
1187 if (*issued == dpolicy->max_requests)
1192 if (time_to_inject(sbi, FAULT_DISCARD)) {
1193 f2fs_show_injection_info(sbi, FAULT_DISCARD);
1197 err = __blkdev_issue_discard(bdev,
1198 SECTOR_FROM_BLOCK(start),
1199 SECTOR_FROM_BLOCK(len),
1203 spin_lock_irqsave(&dc->lock, flags);
1204 if (dc->state == D_PARTIAL)
1205 dc->state = D_SUBMIT;
1206 spin_unlock_irqrestore(&dc->lock, flags);
1211 f2fs_bug_on(sbi, !bio);
1214 * should keep before submission to avoid D_DONE
1217 spin_lock_irqsave(&dc->lock, flags);
1219 dc->state = D_SUBMIT;
1221 dc->state = D_PARTIAL;
1223 spin_unlock_irqrestore(&dc->lock, flags);
1225 atomic_inc(&dcc->queued_discard);
1227 list_move_tail(&dc->list, wait_list);
1229 /* sanity check on discard range */
1230 __check_sit_bitmap(sbi, lstart, lstart + len);
1232 bio->bi_private = dc;
1233 bio->bi_end_io = f2fs_submit_discard_endio;
1234 bio->bi_opf |= flag;
1237 atomic_inc(&dcc->issued_discard);
1239 f2fs_update_iostat(sbi, FS_DISCARD, 1);
1248 dcc->undiscard_blks -= len;
1249 __update_discard_tree_range(sbi, bdev, lstart, start, len);
1254 static void __insert_discard_tree(struct f2fs_sb_info *sbi,
1255 struct block_device *bdev, block_t lstart,
1256 block_t start, block_t len,
1257 struct rb_node **insert_p,
1258 struct rb_node *insert_parent)
1260 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1262 struct rb_node *parent = NULL;
1263 bool leftmost = true;
1265 if (insert_p && insert_parent) {
1266 parent = insert_parent;
1271 p = f2fs_lookup_rb_tree_for_insert(sbi, &dcc->root, &parent,
1274 __attach_discard_cmd(sbi, bdev, lstart, start, len, parent,
1278 static void __relocate_discard_cmd(struct discard_cmd_control *dcc,
1279 struct discard_cmd *dc)
1281 list_move_tail(&dc->list, &dcc->pend_list[plist_idx(dc->len)]);
1284 static void __punch_discard_cmd(struct f2fs_sb_info *sbi,
1285 struct discard_cmd *dc, block_t blkaddr)
1287 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1288 struct discard_info di = dc->di;
1289 bool modified = false;
1291 if (dc->state == D_DONE || dc->len == 1) {
1292 __remove_discard_cmd(sbi, dc);
1296 dcc->undiscard_blks -= di.len;
1298 if (blkaddr > di.lstart) {
1299 dc->len = blkaddr - dc->lstart;
1300 dcc->undiscard_blks += dc->len;
1301 __relocate_discard_cmd(dcc, dc);
1305 if (blkaddr < di.lstart + di.len - 1) {
1307 __insert_discard_tree(sbi, dc->bdev, blkaddr + 1,
1308 di.start + blkaddr + 1 - di.lstart,
1309 di.lstart + di.len - 1 - blkaddr,
1315 dcc->undiscard_blks += dc->len;
1316 __relocate_discard_cmd(dcc, dc);
1321 static void __update_discard_tree_range(struct f2fs_sb_info *sbi,
1322 struct block_device *bdev, block_t lstart,
1323 block_t start, block_t len)
1325 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1326 struct discard_cmd *prev_dc = NULL, *next_dc = NULL;
1327 struct discard_cmd *dc;
1328 struct discard_info di = {0};
1329 struct rb_node **insert_p = NULL, *insert_parent = NULL;
1330 struct request_queue *q = bdev_get_queue(bdev);
1331 unsigned int max_discard_blocks =
1332 SECTOR_TO_BLOCK(q->limits.max_discard_sectors);
1333 block_t end = lstart + len;
1335 dc = (struct discard_cmd *)f2fs_lookup_rb_tree_ret(&dcc->root,
1337 (struct rb_entry **)&prev_dc,
1338 (struct rb_entry **)&next_dc,
1339 &insert_p, &insert_parent, true, NULL);
1345 di.len = next_dc ? next_dc->lstart - lstart : len;
1346 di.len = min(di.len, len);
1351 struct rb_node *node;
1352 bool merged = false;
1353 struct discard_cmd *tdc = NULL;
1356 di.lstart = prev_dc->lstart + prev_dc->len;
1357 if (di.lstart < lstart)
1359 if (di.lstart >= end)
1362 if (!next_dc || next_dc->lstart > end)
1363 di.len = end - di.lstart;
1365 di.len = next_dc->lstart - di.lstart;
1366 di.start = start + di.lstart - lstart;
1372 if (prev_dc && prev_dc->state == D_PREP &&
1373 prev_dc->bdev == bdev &&
1374 __is_discard_back_mergeable(&di, &prev_dc->di,
1375 max_discard_blocks)) {
1376 prev_dc->di.len += di.len;
1377 dcc->undiscard_blks += di.len;
1378 __relocate_discard_cmd(dcc, prev_dc);
1384 if (next_dc && next_dc->state == D_PREP &&
1385 next_dc->bdev == bdev &&
1386 __is_discard_front_mergeable(&di, &next_dc->di,
1387 max_discard_blocks)) {
1388 next_dc->di.lstart = di.lstart;
1389 next_dc->di.len += di.len;
1390 next_dc->di.start = di.start;
1391 dcc->undiscard_blks += di.len;
1392 __relocate_discard_cmd(dcc, next_dc);
1394 __remove_discard_cmd(sbi, tdc);
1399 __insert_discard_tree(sbi, bdev, di.lstart, di.start,
1400 di.len, NULL, NULL);
1407 node = rb_next(&prev_dc->rb_node);
1408 next_dc = rb_entry_safe(node, struct discard_cmd, rb_node);
1412 static int __queue_discard_cmd(struct f2fs_sb_info *sbi,
1413 struct block_device *bdev, block_t blkstart, block_t blklen)
1415 block_t lblkstart = blkstart;
1417 if (!f2fs_bdev_support_discard(bdev))
1420 trace_f2fs_queue_discard(bdev, blkstart, blklen);
1422 if (f2fs_is_multi_device(sbi)) {
1423 int devi = f2fs_target_device_index(sbi, blkstart);
1425 blkstart -= FDEV(devi).start_blk;
1427 mutex_lock(&SM_I(sbi)->dcc_info->cmd_lock);
1428 __update_discard_tree_range(sbi, bdev, lblkstart, blkstart, blklen);
1429 mutex_unlock(&SM_I(sbi)->dcc_info->cmd_lock);
1433 static unsigned int __issue_discard_cmd_orderly(struct f2fs_sb_info *sbi,
1434 struct discard_policy *dpolicy)
1436 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1437 struct discard_cmd *prev_dc = NULL, *next_dc = NULL;
1438 struct rb_node **insert_p = NULL, *insert_parent = NULL;
1439 struct discard_cmd *dc;
1440 struct blk_plug plug;
1441 unsigned int pos = dcc->next_pos;
1442 unsigned int issued = 0;
1443 bool io_interrupted = false;
1445 mutex_lock(&dcc->cmd_lock);
1446 dc = (struct discard_cmd *)f2fs_lookup_rb_tree_ret(&dcc->root,
1448 (struct rb_entry **)&prev_dc,
1449 (struct rb_entry **)&next_dc,
1450 &insert_p, &insert_parent, true, NULL);
1454 blk_start_plug(&plug);
1457 struct rb_node *node;
1460 if (dc->state != D_PREP)
1463 if (dpolicy->io_aware && !is_idle(sbi, DISCARD_TIME)) {
1464 io_interrupted = true;
1468 dcc->next_pos = dc->lstart + dc->len;
1469 err = __submit_discard_cmd(sbi, dpolicy, dc, &issued);
1471 if (issued >= dpolicy->max_requests)
1474 node = rb_next(&dc->rb_node);
1476 __remove_discard_cmd(sbi, dc);
1477 dc = rb_entry_safe(node, struct discard_cmd, rb_node);
1480 blk_finish_plug(&plug);
1485 mutex_unlock(&dcc->cmd_lock);
1487 if (!issued && io_interrupted)
1492 static unsigned int __wait_all_discard_cmd(struct f2fs_sb_info *sbi,
1493 struct discard_policy *dpolicy);
1495 static int __issue_discard_cmd(struct f2fs_sb_info *sbi,
1496 struct discard_policy *dpolicy)
1498 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1499 struct list_head *pend_list;
1500 struct discard_cmd *dc, *tmp;
1501 struct blk_plug plug;
1503 bool io_interrupted = false;
1505 if (dpolicy->timeout)
1506 f2fs_update_time(sbi, UMOUNT_DISCARD_TIMEOUT);
1510 for (i = MAX_PLIST_NUM - 1; i >= 0; i--) {
1511 if (dpolicy->timeout &&
1512 f2fs_time_over(sbi, UMOUNT_DISCARD_TIMEOUT))
1515 if (i + 1 < dpolicy->granularity)
1518 if (i < DEFAULT_DISCARD_GRANULARITY && dpolicy->ordered)
1519 return __issue_discard_cmd_orderly(sbi, dpolicy);
1521 pend_list = &dcc->pend_list[i];
1523 mutex_lock(&dcc->cmd_lock);
1524 if (list_empty(pend_list))
1526 if (unlikely(dcc->rbtree_check))
1527 f2fs_bug_on(sbi, !f2fs_check_rb_tree_consistence(sbi,
1529 blk_start_plug(&plug);
1530 list_for_each_entry_safe(dc, tmp, pend_list, list) {
1531 f2fs_bug_on(sbi, dc->state != D_PREP);
1533 if (dpolicy->timeout &&
1534 f2fs_time_over(sbi, UMOUNT_DISCARD_TIMEOUT))
1537 if (dpolicy->io_aware && i < dpolicy->io_aware_gran &&
1538 !is_idle(sbi, DISCARD_TIME)) {
1539 io_interrupted = true;
1543 __submit_discard_cmd(sbi, dpolicy, dc, &issued);
1545 if (issued >= dpolicy->max_requests)
1548 blk_finish_plug(&plug);
1550 mutex_unlock(&dcc->cmd_lock);
1552 if (issued >= dpolicy->max_requests || io_interrupted)
1556 if (dpolicy->type == DPOLICY_UMOUNT && issued) {
1557 __wait_all_discard_cmd(sbi, dpolicy);
1561 if (!issued && io_interrupted)
1567 static bool __drop_discard_cmd(struct f2fs_sb_info *sbi)
1569 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1570 struct list_head *pend_list;
1571 struct discard_cmd *dc, *tmp;
1573 bool dropped = false;
1575 mutex_lock(&dcc->cmd_lock);
1576 for (i = MAX_PLIST_NUM - 1; i >= 0; i--) {
1577 pend_list = &dcc->pend_list[i];
1578 list_for_each_entry_safe(dc, tmp, pend_list, list) {
1579 f2fs_bug_on(sbi, dc->state != D_PREP);
1580 __remove_discard_cmd(sbi, dc);
1584 mutex_unlock(&dcc->cmd_lock);
1589 void f2fs_drop_discard_cmd(struct f2fs_sb_info *sbi)
1591 __drop_discard_cmd(sbi);
1594 static unsigned int __wait_one_discard_bio(struct f2fs_sb_info *sbi,
1595 struct discard_cmd *dc)
1597 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1598 unsigned int len = 0;
1600 wait_for_completion_io(&dc->wait);
1601 mutex_lock(&dcc->cmd_lock);
1602 f2fs_bug_on(sbi, dc->state != D_DONE);
1607 __remove_discard_cmd(sbi, dc);
1609 mutex_unlock(&dcc->cmd_lock);
1614 static unsigned int __wait_discard_cmd_range(struct f2fs_sb_info *sbi,
1615 struct discard_policy *dpolicy,
1616 block_t start, block_t end)
1618 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1619 struct list_head *wait_list = (dpolicy->type == DPOLICY_FSTRIM) ?
1620 &(dcc->fstrim_list) : &(dcc->wait_list);
1621 struct discard_cmd *dc, *tmp;
1623 unsigned int trimmed = 0;
1628 mutex_lock(&dcc->cmd_lock);
1629 list_for_each_entry_safe(dc, tmp, wait_list, list) {
1630 if (dc->lstart + dc->len <= start || end <= dc->lstart)
1632 if (dc->len < dpolicy->granularity)
1634 if (dc->state == D_DONE && !dc->ref) {
1635 wait_for_completion_io(&dc->wait);
1638 __remove_discard_cmd(sbi, dc);
1645 mutex_unlock(&dcc->cmd_lock);
1648 trimmed += __wait_one_discard_bio(sbi, dc);
1655 static unsigned int __wait_all_discard_cmd(struct f2fs_sb_info *sbi,
1656 struct discard_policy *dpolicy)
1658 struct discard_policy dp;
1659 unsigned int discard_blks;
1662 return __wait_discard_cmd_range(sbi, dpolicy, 0, UINT_MAX);
1665 __init_discard_policy(sbi, &dp, DPOLICY_FSTRIM, 1);
1666 discard_blks = __wait_discard_cmd_range(sbi, &dp, 0, UINT_MAX);
1667 __init_discard_policy(sbi, &dp, DPOLICY_UMOUNT, 1);
1668 discard_blks += __wait_discard_cmd_range(sbi, &dp, 0, UINT_MAX);
1670 return discard_blks;
1673 /* This should be covered by global mutex, &sit_i->sentry_lock */
1674 static void f2fs_wait_discard_bio(struct f2fs_sb_info *sbi, block_t blkaddr)
1676 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1677 struct discard_cmd *dc;
1678 bool need_wait = false;
1680 mutex_lock(&dcc->cmd_lock);
1681 dc = (struct discard_cmd *)f2fs_lookup_rb_tree(&dcc->root,
1684 if (dc->state == D_PREP) {
1685 __punch_discard_cmd(sbi, dc, blkaddr);
1691 mutex_unlock(&dcc->cmd_lock);
1694 __wait_one_discard_bio(sbi, dc);
1697 void f2fs_stop_discard_thread(struct f2fs_sb_info *sbi)
1699 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1701 if (dcc && dcc->f2fs_issue_discard) {
1702 struct task_struct *discard_thread = dcc->f2fs_issue_discard;
1704 dcc->f2fs_issue_discard = NULL;
1705 kthread_stop(discard_thread);
1709 /* This comes from f2fs_put_super */
1710 bool f2fs_issue_discard_timeout(struct f2fs_sb_info *sbi)
1712 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1713 struct discard_policy dpolicy;
1716 __init_discard_policy(sbi, &dpolicy, DPOLICY_UMOUNT,
1717 dcc->discard_granularity);
1718 __issue_discard_cmd(sbi, &dpolicy);
1719 dropped = __drop_discard_cmd(sbi);
1721 /* just to make sure there is no pending discard commands */
1722 __wait_all_discard_cmd(sbi, NULL);
1724 f2fs_bug_on(sbi, atomic_read(&dcc->discard_cmd_cnt));
1728 static int issue_discard_thread(void *data)
1730 struct f2fs_sb_info *sbi = data;
1731 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1732 wait_queue_head_t *q = &dcc->discard_wait_queue;
1733 struct discard_policy dpolicy;
1734 unsigned int wait_ms = DEF_MIN_DISCARD_ISSUE_TIME;
1740 __init_discard_policy(sbi, &dpolicy, DPOLICY_BG,
1741 dcc->discard_granularity);
1743 wait_event_interruptible_timeout(*q,
1744 kthread_should_stop() || freezing(current) ||
1746 msecs_to_jiffies(wait_ms));
1748 if (dcc->discard_wake)
1749 dcc->discard_wake = 0;
1751 /* clean up pending candidates before going to sleep */
1752 if (atomic_read(&dcc->queued_discard))
1753 __wait_all_discard_cmd(sbi, NULL);
1755 if (try_to_freeze())
1757 if (f2fs_readonly(sbi->sb))
1759 if (kthread_should_stop())
1761 if (is_sbi_flag_set(sbi, SBI_NEED_FSCK)) {
1762 wait_ms = dpolicy.max_interval;
1766 if (sbi->gc_mode == GC_URGENT_HIGH)
1767 __init_discard_policy(sbi, &dpolicy, DPOLICY_FORCE, 1);
1769 sb_start_intwrite(sbi->sb);
1771 issued = __issue_discard_cmd(sbi, &dpolicy);
1773 __wait_all_discard_cmd(sbi, &dpolicy);
1774 wait_ms = dpolicy.min_interval;
1775 } else if (issued == -1){
1776 wait_ms = f2fs_time_to_wait(sbi, DISCARD_TIME);
1778 wait_ms = dpolicy.mid_interval;
1780 wait_ms = dpolicy.max_interval;
1783 sb_end_intwrite(sbi->sb);
1785 } while (!kthread_should_stop());
1789 #ifdef CONFIG_BLK_DEV_ZONED
1790 static int __f2fs_issue_discard_zone(struct f2fs_sb_info *sbi,
1791 struct block_device *bdev, block_t blkstart, block_t blklen)
1793 sector_t sector, nr_sects;
1794 block_t lblkstart = blkstart;
1797 if (f2fs_is_multi_device(sbi)) {
1798 devi = f2fs_target_device_index(sbi, blkstart);
1799 if (blkstart < FDEV(devi).start_blk ||
1800 blkstart > FDEV(devi).end_blk) {
1801 f2fs_err(sbi, "Invalid block %x", blkstart);
1804 blkstart -= FDEV(devi).start_blk;
1807 /* For sequential zones, reset the zone write pointer */
1808 if (f2fs_blkz_is_seq(sbi, devi, blkstart)) {
1809 sector = SECTOR_FROM_BLOCK(blkstart);
1810 nr_sects = SECTOR_FROM_BLOCK(blklen);
1812 if (sector & (bdev_zone_sectors(bdev) - 1) ||
1813 nr_sects != bdev_zone_sectors(bdev)) {
1814 f2fs_err(sbi, "(%d) %s: Unaligned zone reset attempted (block %x + %x)",
1815 devi, sbi->s_ndevs ? FDEV(devi).path : "",
1819 trace_f2fs_issue_reset_zone(bdev, blkstart);
1820 return blkdev_zone_mgmt(bdev, REQ_OP_ZONE_RESET,
1821 sector, nr_sects, GFP_NOFS);
1824 /* For conventional zones, use regular discard if supported */
1825 return __queue_discard_cmd(sbi, bdev, lblkstart, blklen);
1829 static int __issue_discard_async(struct f2fs_sb_info *sbi,
1830 struct block_device *bdev, block_t blkstart, block_t blklen)
1832 #ifdef CONFIG_BLK_DEV_ZONED
1833 if (f2fs_sb_has_blkzoned(sbi) && bdev_is_zoned(bdev))
1834 return __f2fs_issue_discard_zone(sbi, bdev, blkstart, blklen);
1836 return __queue_discard_cmd(sbi, bdev, blkstart, blklen);
1839 static int f2fs_issue_discard(struct f2fs_sb_info *sbi,
1840 block_t blkstart, block_t blklen)
1842 sector_t start = blkstart, len = 0;
1843 struct block_device *bdev;
1844 struct seg_entry *se;
1845 unsigned int offset;
1849 bdev = f2fs_target_device(sbi, blkstart, NULL);
1851 for (i = blkstart; i < blkstart + blklen; i++, len++) {
1853 struct block_device *bdev2 =
1854 f2fs_target_device(sbi, i, NULL);
1856 if (bdev2 != bdev) {
1857 err = __issue_discard_async(sbi, bdev,
1867 se = get_seg_entry(sbi, GET_SEGNO(sbi, i));
1868 offset = GET_BLKOFF_FROM_SEG0(sbi, i);
1870 if (!f2fs_test_and_set_bit(offset, se->discard_map))
1871 sbi->discard_blks--;
1875 err = __issue_discard_async(sbi, bdev, start, len);
1879 static bool add_discard_addrs(struct f2fs_sb_info *sbi, struct cp_control *cpc,
1882 int entries = SIT_VBLOCK_MAP_SIZE / sizeof(unsigned long);
1883 int max_blocks = sbi->blocks_per_seg;
1884 struct seg_entry *se = get_seg_entry(sbi, cpc->trim_start);
1885 unsigned long *cur_map = (unsigned long *)se->cur_valid_map;
1886 unsigned long *ckpt_map = (unsigned long *)se->ckpt_valid_map;
1887 unsigned long *discard_map = (unsigned long *)se->discard_map;
1888 unsigned long *dmap = SIT_I(sbi)->tmp_map;
1889 unsigned int start = 0, end = -1;
1890 bool force = (cpc->reason & CP_DISCARD);
1891 struct discard_entry *de = NULL;
1892 struct list_head *head = &SM_I(sbi)->dcc_info->entry_list;
1895 if (se->valid_blocks == max_blocks || !f2fs_hw_support_discard(sbi))
1899 if (!f2fs_realtime_discard_enable(sbi) || !se->valid_blocks ||
1900 SM_I(sbi)->dcc_info->nr_discards >=
1901 SM_I(sbi)->dcc_info->max_discards)
1905 /* SIT_VBLOCK_MAP_SIZE should be multiple of sizeof(unsigned long) */
1906 for (i = 0; i < entries; i++)
1907 dmap[i] = force ? ~ckpt_map[i] & ~discard_map[i] :
1908 (cur_map[i] ^ ckpt_map[i]) & ckpt_map[i];
1910 while (force || SM_I(sbi)->dcc_info->nr_discards <=
1911 SM_I(sbi)->dcc_info->max_discards) {
1912 start = __find_rev_next_bit(dmap, max_blocks, end + 1);
1913 if (start >= max_blocks)
1916 end = __find_rev_next_zero_bit(dmap, max_blocks, start + 1);
1917 if (force && start && end != max_blocks
1918 && (end - start) < cpc->trim_minlen)
1925 de = f2fs_kmem_cache_alloc(discard_entry_slab,
1927 de->start_blkaddr = START_BLOCK(sbi, cpc->trim_start);
1928 list_add_tail(&de->list, head);
1931 for (i = start; i < end; i++)
1932 __set_bit_le(i, (void *)de->discard_map);
1934 SM_I(sbi)->dcc_info->nr_discards += end - start;
1939 static void release_discard_addr(struct discard_entry *entry)
1941 list_del(&entry->list);
1942 kmem_cache_free(discard_entry_slab, entry);
1945 void f2fs_release_discard_addrs(struct f2fs_sb_info *sbi)
1947 struct list_head *head = &(SM_I(sbi)->dcc_info->entry_list);
1948 struct discard_entry *entry, *this;
1951 list_for_each_entry_safe(entry, this, head, list)
1952 release_discard_addr(entry);
1956 * Should call f2fs_clear_prefree_segments after checkpoint is done.
1958 static void set_prefree_as_free_segments(struct f2fs_sb_info *sbi)
1960 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
1963 mutex_lock(&dirty_i->seglist_lock);
1964 for_each_set_bit(segno, dirty_i->dirty_segmap[PRE], MAIN_SEGS(sbi))
1965 __set_test_and_free(sbi, segno, false);
1966 mutex_unlock(&dirty_i->seglist_lock);
1969 void f2fs_clear_prefree_segments(struct f2fs_sb_info *sbi,
1970 struct cp_control *cpc)
1972 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1973 struct list_head *head = &dcc->entry_list;
1974 struct discard_entry *entry, *this;
1975 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
1976 unsigned long *prefree_map = dirty_i->dirty_segmap[PRE];
1977 unsigned int start = 0, end = -1;
1978 unsigned int secno, start_segno;
1979 bool force = (cpc->reason & CP_DISCARD);
1980 bool need_align = f2fs_lfs_mode(sbi) && __is_large_section(sbi);
1982 mutex_lock(&dirty_i->seglist_lock);
1987 if (need_align && end != -1)
1989 start = find_next_bit(prefree_map, MAIN_SEGS(sbi), end + 1);
1990 if (start >= MAIN_SEGS(sbi))
1992 end = find_next_zero_bit(prefree_map, MAIN_SEGS(sbi),
1996 start = rounddown(start, sbi->segs_per_sec);
1997 end = roundup(end, sbi->segs_per_sec);
2000 for (i = start; i < end; i++) {
2001 if (test_and_clear_bit(i, prefree_map))
2002 dirty_i->nr_dirty[PRE]--;
2005 if (!f2fs_realtime_discard_enable(sbi))
2008 if (force && start >= cpc->trim_start &&
2009 (end - 1) <= cpc->trim_end)
2012 if (!f2fs_lfs_mode(sbi) || !__is_large_section(sbi)) {
2013 f2fs_issue_discard(sbi, START_BLOCK(sbi, start),
2014 (end - start) << sbi->log_blocks_per_seg);
2018 secno = GET_SEC_FROM_SEG(sbi, start);
2019 start_segno = GET_SEG_FROM_SEC(sbi, secno);
2020 if (!IS_CURSEC(sbi, secno) &&
2021 !get_valid_blocks(sbi, start, true))
2022 f2fs_issue_discard(sbi, START_BLOCK(sbi, start_segno),
2023 sbi->segs_per_sec << sbi->log_blocks_per_seg);
2025 start = start_segno + sbi->segs_per_sec;
2031 mutex_unlock(&dirty_i->seglist_lock);
2033 /* send small discards */
2034 list_for_each_entry_safe(entry, this, head, list) {
2035 unsigned int cur_pos = 0, next_pos, len, total_len = 0;
2036 bool is_valid = test_bit_le(0, entry->discard_map);
2040 next_pos = find_next_zero_bit_le(entry->discard_map,
2041 sbi->blocks_per_seg, cur_pos);
2042 len = next_pos - cur_pos;
2044 if (f2fs_sb_has_blkzoned(sbi) ||
2045 (force && len < cpc->trim_minlen))
2048 f2fs_issue_discard(sbi, entry->start_blkaddr + cur_pos,
2052 next_pos = find_next_bit_le(entry->discard_map,
2053 sbi->blocks_per_seg, cur_pos);
2057 is_valid = !is_valid;
2059 if (cur_pos < sbi->blocks_per_seg)
2062 release_discard_addr(entry);
2063 dcc->nr_discards -= total_len;
2066 wake_up_discard_thread(sbi, false);
2069 static int create_discard_cmd_control(struct f2fs_sb_info *sbi)
2071 dev_t dev = sbi->sb->s_bdev->bd_dev;
2072 struct discard_cmd_control *dcc;
2075 if (SM_I(sbi)->dcc_info) {
2076 dcc = SM_I(sbi)->dcc_info;
2080 dcc = f2fs_kzalloc(sbi, sizeof(struct discard_cmd_control), GFP_KERNEL);
2084 dcc->discard_granularity = DEFAULT_DISCARD_GRANULARITY;
2085 INIT_LIST_HEAD(&dcc->entry_list);
2086 for (i = 0; i < MAX_PLIST_NUM; i++)
2087 INIT_LIST_HEAD(&dcc->pend_list[i]);
2088 INIT_LIST_HEAD(&dcc->wait_list);
2089 INIT_LIST_HEAD(&dcc->fstrim_list);
2090 mutex_init(&dcc->cmd_lock);
2091 atomic_set(&dcc->issued_discard, 0);
2092 atomic_set(&dcc->queued_discard, 0);
2093 atomic_set(&dcc->discard_cmd_cnt, 0);
2094 dcc->nr_discards = 0;
2095 dcc->max_discards = MAIN_SEGS(sbi) << sbi->log_blocks_per_seg;
2096 dcc->undiscard_blks = 0;
2098 dcc->root = RB_ROOT_CACHED;
2099 dcc->rbtree_check = false;
2101 init_waitqueue_head(&dcc->discard_wait_queue);
2102 SM_I(sbi)->dcc_info = dcc;
2104 dcc->f2fs_issue_discard = kthread_run(issue_discard_thread, sbi,
2105 "f2fs_discard-%u:%u", MAJOR(dev), MINOR(dev));
2106 if (IS_ERR(dcc->f2fs_issue_discard)) {
2107 err = PTR_ERR(dcc->f2fs_issue_discard);
2109 SM_I(sbi)->dcc_info = NULL;
2116 static void destroy_discard_cmd_control(struct f2fs_sb_info *sbi)
2118 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
2123 f2fs_stop_discard_thread(sbi);
2126 * Recovery can cache discard commands, so in error path of
2127 * fill_super(), it needs to give a chance to handle them.
2129 if (unlikely(atomic_read(&dcc->discard_cmd_cnt)))
2130 f2fs_issue_discard_timeout(sbi);
2133 SM_I(sbi)->dcc_info = NULL;
2136 static bool __mark_sit_entry_dirty(struct f2fs_sb_info *sbi, unsigned int segno)
2138 struct sit_info *sit_i = SIT_I(sbi);
2140 if (!__test_and_set_bit(segno, sit_i->dirty_sentries_bitmap)) {
2141 sit_i->dirty_sentries++;
2148 static void __set_sit_entry_type(struct f2fs_sb_info *sbi, int type,
2149 unsigned int segno, int modified)
2151 struct seg_entry *se = get_seg_entry(sbi, segno);
2154 __mark_sit_entry_dirty(sbi, segno);
2157 static void update_segment_mtime(struct f2fs_sb_info *sbi, block_t blkaddr)
2159 unsigned int segno = GET_SEGNO(sbi, blkaddr);
2160 struct seg_entry *se = get_seg_entry(sbi, segno);
2161 unsigned long long mtime = get_mtime(sbi, false);
2166 se->mtime = div_u64(se->mtime * se->valid_blocks + mtime,
2167 se->valid_blocks + 1);
2169 if (mtime > SIT_I(sbi)->max_mtime)
2170 SIT_I(sbi)->max_mtime = mtime;
2173 static void update_sit_entry(struct f2fs_sb_info *sbi, block_t blkaddr, int del)
2175 struct seg_entry *se;
2176 unsigned int segno, offset;
2177 long int new_vblocks;
2179 #ifdef CONFIG_F2FS_CHECK_FS
2183 segno = GET_SEGNO(sbi, blkaddr);
2185 se = get_seg_entry(sbi, segno);
2186 new_vblocks = se->valid_blocks + del;
2187 offset = GET_BLKOFF_FROM_SEG0(sbi, blkaddr);
2189 f2fs_bug_on(sbi, (new_vblocks < 0 ||
2190 (new_vblocks > f2fs_usable_blks_in_seg(sbi, segno))));
2192 update_segment_mtime(sbi, blkaddr);
2194 se->valid_blocks = new_vblocks;
2196 /* Update valid block bitmap */
2198 exist = f2fs_test_and_set_bit(offset, se->cur_valid_map);
2199 #ifdef CONFIG_F2FS_CHECK_FS
2200 mir_exist = f2fs_test_and_set_bit(offset,
2201 se->cur_valid_map_mir);
2202 if (unlikely(exist != mir_exist)) {
2203 f2fs_err(sbi, "Inconsistent error when setting bitmap, blk:%u, old bit:%d",
2205 f2fs_bug_on(sbi, 1);
2208 if (unlikely(exist)) {
2209 f2fs_err(sbi, "Bitmap was wrongly set, blk:%u",
2211 f2fs_bug_on(sbi, 1);
2216 if (!f2fs_test_and_set_bit(offset, se->discard_map))
2217 sbi->discard_blks--;
2220 * SSR should never reuse block which is checkpointed
2221 * or newly invalidated.
2223 if (!is_sbi_flag_set(sbi, SBI_CP_DISABLED)) {
2224 if (!f2fs_test_and_set_bit(offset, se->ckpt_valid_map))
2225 se->ckpt_valid_blocks++;
2228 exist = f2fs_test_and_clear_bit(offset, se->cur_valid_map);
2229 #ifdef CONFIG_F2FS_CHECK_FS
2230 mir_exist = f2fs_test_and_clear_bit(offset,
2231 se->cur_valid_map_mir);
2232 if (unlikely(exist != mir_exist)) {
2233 f2fs_err(sbi, "Inconsistent error when clearing bitmap, blk:%u, old bit:%d",
2235 f2fs_bug_on(sbi, 1);
2238 if (unlikely(!exist)) {
2239 f2fs_err(sbi, "Bitmap was wrongly cleared, blk:%u",
2241 f2fs_bug_on(sbi, 1);
2244 } else if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
2246 * If checkpoints are off, we must not reuse data that
2247 * was used in the previous checkpoint. If it was used
2248 * before, we must track that to know how much space we
2251 if (f2fs_test_bit(offset, se->ckpt_valid_map)) {
2252 spin_lock(&sbi->stat_lock);
2253 sbi->unusable_block_count++;
2254 spin_unlock(&sbi->stat_lock);
2258 if (f2fs_test_and_clear_bit(offset, se->discard_map))
2259 sbi->discard_blks++;
2261 if (!f2fs_test_bit(offset, se->ckpt_valid_map))
2262 se->ckpt_valid_blocks += del;
2264 __mark_sit_entry_dirty(sbi, segno);
2266 /* update total number of valid blocks to be written in ckpt area */
2267 SIT_I(sbi)->written_valid_blocks += del;
2269 if (__is_large_section(sbi))
2270 get_sec_entry(sbi, segno)->valid_blocks += del;
2273 void f2fs_invalidate_blocks(struct f2fs_sb_info *sbi, block_t addr)
2275 unsigned int segno = GET_SEGNO(sbi, addr);
2276 struct sit_info *sit_i = SIT_I(sbi);
2278 f2fs_bug_on(sbi, addr == NULL_ADDR);
2279 if (addr == NEW_ADDR || addr == COMPRESS_ADDR)
2282 invalidate_mapping_pages(META_MAPPING(sbi), addr, addr);
2284 /* add it into sit main buffer */
2285 down_write(&sit_i->sentry_lock);
2287 update_sit_entry(sbi, addr, -1);
2289 /* add it into dirty seglist */
2290 locate_dirty_segment(sbi, segno);
2292 up_write(&sit_i->sentry_lock);
2295 bool f2fs_is_checkpointed_data(struct f2fs_sb_info *sbi, block_t blkaddr)
2297 struct sit_info *sit_i = SIT_I(sbi);
2298 unsigned int segno, offset;
2299 struct seg_entry *se;
2302 if (!__is_valid_data_blkaddr(blkaddr))
2305 down_read(&sit_i->sentry_lock);
2307 segno = GET_SEGNO(sbi, blkaddr);
2308 se = get_seg_entry(sbi, segno);
2309 offset = GET_BLKOFF_FROM_SEG0(sbi, blkaddr);
2311 if (f2fs_test_bit(offset, se->ckpt_valid_map))
2314 up_read(&sit_i->sentry_lock);
2320 * This function should be resided under the curseg_mutex lock
2322 static void __add_sum_entry(struct f2fs_sb_info *sbi, int type,
2323 struct f2fs_summary *sum)
2325 struct curseg_info *curseg = CURSEG_I(sbi, type);
2326 void *addr = curseg->sum_blk;
2327 addr += curseg->next_blkoff * sizeof(struct f2fs_summary);
2328 memcpy(addr, sum, sizeof(struct f2fs_summary));
2332 * Calculate the number of current summary pages for writing
2334 int f2fs_npages_for_summary_flush(struct f2fs_sb_info *sbi, bool for_ra)
2336 int valid_sum_count = 0;
2339 for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) {
2340 if (sbi->ckpt->alloc_type[i] == SSR)
2341 valid_sum_count += sbi->blocks_per_seg;
2344 valid_sum_count += le16_to_cpu(
2345 F2FS_CKPT(sbi)->cur_data_blkoff[i]);
2347 valid_sum_count += curseg_blkoff(sbi, i);
2351 sum_in_page = (PAGE_SIZE - 2 * SUM_JOURNAL_SIZE -
2352 SUM_FOOTER_SIZE) / SUMMARY_SIZE;
2353 if (valid_sum_count <= sum_in_page)
2355 else if ((valid_sum_count - sum_in_page) <=
2356 (PAGE_SIZE - SUM_FOOTER_SIZE) / SUMMARY_SIZE)
2362 * Caller should put this summary page
2364 struct page *f2fs_get_sum_page(struct f2fs_sb_info *sbi, unsigned int segno)
2366 return f2fs_get_meta_page_nofail(sbi, GET_SUM_BLOCK(sbi, segno));
2369 void f2fs_update_meta_page(struct f2fs_sb_info *sbi,
2370 void *src, block_t blk_addr)
2372 struct page *page = f2fs_grab_meta_page(sbi, blk_addr);
2374 memcpy(page_address(page), src, PAGE_SIZE);
2375 set_page_dirty(page);
2376 f2fs_put_page(page, 1);
2379 static void write_sum_page(struct f2fs_sb_info *sbi,
2380 struct f2fs_summary_block *sum_blk, block_t blk_addr)
2382 f2fs_update_meta_page(sbi, (void *)sum_blk, blk_addr);
2385 static void write_current_sum_page(struct f2fs_sb_info *sbi,
2386 int type, block_t blk_addr)
2388 struct curseg_info *curseg = CURSEG_I(sbi, type);
2389 struct page *page = f2fs_grab_meta_page(sbi, blk_addr);
2390 struct f2fs_summary_block *src = curseg->sum_blk;
2391 struct f2fs_summary_block *dst;
2393 dst = (struct f2fs_summary_block *)page_address(page);
2394 memset(dst, 0, PAGE_SIZE);
2396 mutex_lock(&curseg->curseg_mutex);
2398 down_read(&curseg->journal_rwsem);
2399 memcpy(&dst->journal, curseg->journal, SUM_JOURNAL_SIZE);
2400 up_read(&curseg->journal_rwsem);
2402 memcpy(dst->entries, src->entries, SUM_ENTRY_SIZE);
2403 memcpy(&dst->footer, &src->footer, SUM_FOOTER_SIZE);
2405 mutex_unlock(&curseg->curseg_mutex);
2407 set_page_dirty(page);
2408 f2fs_put_page(page, 1);
2411 static int is_next_segment_free(struct f2fs_sb_info *sbi, int type)
2413 struct curseg_info *curseg = CURSEG_I(sbi, type);
2414 unsigned int segno = curseg->segno + 1;
2415 struct free_segmap_info *free_i = FREE_I(sbi);
2417 if (segno < MAIN_SEGS(sbi) && segno % sbi->segs_per_sec)
2418 return !test_bit(segno, free_i->free_segmap);
2423 * Find a new segment from the free segments bitmap to right order
2424 * This function should be returned with success, otherwise BUG
2426 static void get_new_segment(struct f2fs_sb_info *sbi,
2427 unsigned int *newseg, bool new_sec, int dir)
2429 struct free_segmap_info *free_i = FREE_I(sbi);
2430 unsigned int segno, secno, zoneno;
2431 unsigned int total_zones = MAIN_SECS(sbi) / sbi->secs_per_zone;
2432 unsigned int hint = GET_SEC_FROM_SEG(sbi, *newseg);
2433 unsigned int old_zoneno = GET_ZONE_FROM_SEG(sbi, *newseg);
2434 unsigned int left_start = hint;
2439 spin_lock(&free_i->segmap_lock);
2441 if (!new_sec && ((*newseg + 1) % sbi->segs_per_sec)) {
2442 segno = find_next_zero_bit(free_i->free_segmap,
2443 GET_SEG_FROM_SEC(sbi, hint + 1), *newseg + 1);
2444 if (segno < GET_SEG_FROM_SEC(sbi, hint + 1))
2448 secno = find_next_zero_bit(free_i->free_secmap, MAIN_SECS(sbi), hint);
2449 if (secno >= MAIN_SECS(sbi)) {
2450 if (dir == ALLOC_RIGHT) {
2451 secno = find_next_zero_bit(free_i->free_secmap,
2453 f2fs_bug_on(sbi, secno >= MAIN_SECS(sbi));
2456 left_start = hint - 1;
2462 while (test_bit(left_start, free_i->free_secmap)) {
2463 if (left_start > 0) {
2467 left_start = find_next_zero_bit(free_i->free_secmap,
2469 f2fs_bug_on(sbi, left_start >= MAIN_SECS(sbi));
2474 segno = GET_SEG_FROM_SEC(sbi, secno);
2475 zoneno = GET_ZONE_FROM_SEC(sbi, secno);
2477 /* give up on finding another zone */
2480 if (sbi->secs_per_zone == 1)
2482 if (zoneno == old_zoneno)
2484 if (dir == ALLOC_LEFT) {
2485 if (!go_left && zoneno + 1 >= total_zones)
2487 if (go_left && zoneno == 0)
2490 for (i = 0; i < NR_CURSEG_TYPE; i++)
2491 if (CURSEG_I(sbi, i)->zone == zoneno)
2494 if (i < NR_CURSEG_TYPE) {
2495 /* zone is in user, try another */
2497 hint = zoneno * sbi->secs_per_zone - 1;
2498 else if (zoneno + 1 >= total_zones)
2501 hint = (zoneno + 1) * sbi->secs_per_zone;
2503 goto find_other_zone;
2506 /* set it as dirty segment in free segmap */
2507 f2fs_bug_on(sbi, test_bit(segno, free_i->free_segmap));
2508 __set_inuse(sbi, segno);
2510 spin_unlock(&free_i->segmap_lock);
2513 static void reset_curseg(struct f2fs_sb_info *sbi, int type, int modified)
2515 struct curseg_info *curseg = CURSEG_I(sbi, type);
2516 struct summary_footer *sum_footer;
2518 curseg->inited = true;
2519 curseg->segno = curseg->next_segno;
2520 curseg->zone = GET_ZONE_FROM_SEG(sbi, curseg->segno);
2521 curseg->next_blkoff = 0;
2522 curseg->next_segno = NULL_SEGNO;
2524 sum_footer = &(curseg->sum_blk->footer);
2525 memset(sum_footer, 0, sizeof(struct summary_footer));
2526 if (IS_DATASEG(curseg->seg_type))
2527 SET_SUM_TYPE(sum_footer, SUM_TYPE_DATA);
2528 if (IS_NODESEG(curseg->seg_type))
2529 SET_SUM_TYPE(sum_footer, SUM_TYPE_NODE);
2530 __set_sit_entry_type(sbi, curseg->seg_type, curseg->segno, modified);
2533 static unsigned int __get_next_segno(struct f2fs_sb_info *sbi, int type)
2535 struct curseg_info *curseg = CURSEG_I(sbi, type);
2537 /* if segs_per_sec is large than 1, we need to keep original policy. */
2538 if (__is_large_section(sbi))
2539 return curseg->segno;
2541 /* inmem log may not locate on any segment after mount */
2542 if (!curseg->inited)
2545 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
2548 if (test_opt(sbi, NOHEAP) &&
2549 (curseg->seg_type == CURSEG_HOT_DATA ||
2550 IS_NODESEG(curseg->seg_type)))
2553 if (SIT_I(sbi)->last_victim[ALLOC_NEXT])
2554 return SIT_I(sbi)->last_victim[ALLOC_NEXT];
2556 /* find segments from 0 to reuse freed segments */
2557 if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_REUSE)
2560 return curseg->segno;
2564 * Allocate a current working segment.
2565 * This function always allocates a free segment in LFS manner.
2567 static void new_curseg(struct f2fs_sb_info *sbi, int type, bool new_sec)
2569 struct curseg_info *curseg = CURSEG_I(sbi, type);
2570 unsigned short seg_type = curseg->seg_type;
2571 unsigned int segno = curseg->segno;
2572 int dir = ALLOC_LEFT;
2575 write_sum_page(sbi, curseg->sum_blk,
2576 GET_SUM_BLOCK(sbi, segno));
2577 if (seg_type == CURSEG_WARM_DATA || seg_type == CURSEG_COLD_DATA)
2580 if (test_opt(sbi, NOHEAP))
2583 segno = __get_next_segno(sbi, type);
2584 get_new_segment(sbi, &segno, new_sec, dir);
2585 curseg->next_segno = segno;
2586 reset_curseg(sbi, type, 1);
2587 curseg->alloc_type = LFS;
2590 static void __next_free_blkoff(struct f2fs_sb_info *sbi,
2591 struct curseg_info *seg, block_t start)
2593 struct seg_entry *se = get_seg_entry(sbi, seg->segno);
2594 int entries = SIT_VBLOCK_MAP_SIZE / sizeof(unsigned long);
2595 unsigned long *target_map = SIT_I(sbi)->tmp_map;
2596 unsigned long *ckpt_map = (unsigned long *)se->ckpt_valid_map;
2597 unsigned long *cur_map = (unsigned long *)se->cur_valid_map;
2600 for (i = 0; i < entries; i++)
2601 target_map[i] = ckpt_map[i] | cur_map[i];
2603 pos = __find_rev_next_zero_bit(target_map, sbi->blocks_per_seg, start);
2605 seg->next_blkoff = pos;
2609 * If a segment is written by LFS manner, next block offset is just obtained
2610 * by increasing the current block offset. However, if a segment is written by
2611 * SSR manner, next block offset obtained by calling __next_free_blkoff
2613 static void __refresh_next_blkoff(struct f2fs_sb_info *sbi,
2614 struct curseg_info *seg)
2616 if (seg->alloc_type == SSR)
2617 __next_free_blkoff(sbi, seg, seg->next_blkoff + 1);
2623 * This function always allocates a used segment(from dirty seglist) by SSR
2624 * manner, so it should recover the existing segment information of valid blocks
2626 static void change_curseg(struct f2fs_sb_info *sbi, int type)
2628 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
2629 struct curseg_info *curseg = CURSEG_I(sbi, type);
2630 unsigned int new_segno = curseg->next_segno;
2631 struct f2fs_summary_block *sum_node;
2632 struct page *sum_page;
2634 write_sum_page(sbi, curseg->sum_blk,
2635 GET_SUM_BLOCK(sbi, curseg->segno));
2636 __set_test_and_inuse(sbi, new_segno);
2638 mutex_lock(&dirty_i->seglist_lock);
2639 __remove_dirty_segment(sbi, new_segno, PRE);
2640 __remove_dirty_segment(sbi, new_segno, DIRTY);
2641 mutex_unlock(&dirty_i->seglist_lock);
2643 reset_curseg(sbi, type, 1);
2644 curseg->alloc_type = SSR;
2645 __next_free_blkoff(sbi, curseg, 0);
2647 sum_page = f2fs_get_sum_page(sbi, new_segno);
2648 f2fs_bug_on(sbi, IS_ERR(sum_page));
2649 sum_node = (struct f2fs_summary_block *)page_address(sum_page);
2650 memcpy(curseg->sum_blk, sum_node, SUM_ENTRY_SIZE);
2651 f2fs_put_page(sum_page, 1);
2654 void f2fs_save_inmem_curseg(struct f2fs_sb_info *sbi, int type)
2656 struct curseg_info *curseg = CURSEG_I(sbi, type);
2658 mutex_lock(&curseg->curseg_mutex);
2659 if (!curseg->inited)
2662 if (get_valid_blocks(sbi, curseg->segno, false)) {
2663 write_sum_page(sbi, curseg->sum_blk,
2664 GET_SUM_BLOCK(sbi, curseg->segno));
2666 mutex_lock(&DIRTY_I(sbi)->seglist_lock);
2667 __set_test_and_free(sbi, curseg->segno, true);
2668 mutex_unlock(&DIRTY_I(sbi)->seglist_lock);
2671 mutex_unlock(&curseg->curseg_mutex);
2674 void f2fs_restore_inmem_curseg(struct f2fs_sb_info *sbi, int type)
2676 struct curseg_info *curseg = CURSEG_I(sbi, type);
2678 mutex_lock(&curseg->curseg_mutex);
2679 if (!curseg->inited)
2681 if (get_valid_blocks(sbi, curseg->segno, false))
2684 mutex_lock(&DIRTY_I(sbi)->seglist_lock);
2685 __set_test_and_inuse(sbi, curseg->segno);
2686 mutex_unlock(&DIRTY_I(sbi)->seglist_lock);
2688 mutex_unlock(&curseg->curseg_mutex);
2691 static int get_ssr_segment(struct f2fs_sb_info *sbi, int type)
2693 struct curseg_info *curseg = CURSEG_I(sbi, type);
2694 const struct victim_selection *v_ops = DIRTY_I(sbi)->v_ops;
2695 unsigned segno = NULL_SEGNO;
2697 bool reversed = false;
2699 /* f2fs_need_SSR() already forces to do this */
2700 if (!v_ops->get_victim(sbi, &segno, BG_GC, type, SSR)) {
2701 curseg->next_segno = segno;
2705 /* For node segments, let's do SSR more intensively */
2706 if (IS_NODESEG(type)) {
2707 if (type >= CURSEG_WARM_NODE) {
2709 i = CURSEG_COLD_NODE;
2711 i = CURSEG_HOT_NODE;
2713 cnt = NR_CURSEG_NODE_TYPE;
2715 if (type >= CURSEG_WARM_DATA) {
2717 i = CURSEG_COLD_DATA;
2719 i = CURSEG_HOT_DATA;
2721 cnt = NR_CURSEG_DATA_TYPE;
2724 for (; cnt-- > 0; reversed ? i-- : i++) {
2727 if (!v_ops->get_victim(sbi, &segno, BG_GC, i, SSR)) {
2728 curseg->next_segno = segno;
2733 /* find valid_blocks=0 in dirty list */
2734 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
2735 segno = get_free_segment(sbi);
2736 if (segno != NULL_SEGNO) {
2737 curseg->next_segno = segno;
2745 * flush out current segment and replace it with new segment
2746 * This function should be returned with success, otherwise BUG
2748 static void allocate_segment_by_default(struct f2fs_sb_info *sbi,
2749 int type, bool force)
2751 struct curseg_info *curseg = CURSEG_I(sbi, type);
2754 new_curseg(sbi, type, true);
2755 else if (!is_set_ckpt_flags(sbi, CP_CRC_RECOVERY_FLAG) &&
2756 type == CURSEG_WARM_NODE)
2757 new_curseg(sbi, type, false);
2758 else if (curseg->alloc_type == LFS && is_next_segment_free(sbi, type) &&
2759 likely(!is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
2760 new_curseg(sbi, type, false);
2761 else if (f2fs_need_SSR(sbi) && get_ssr_segment(sbi, type))
2762 change_curseg(sbi, type);
2764 new_curseg(sbi, type, false);
2766 stat_inc_seg_type(sbi, curseg);
2769 void f2fs_allocate_segment_for_resize(struct f2fs_sb_info *sbi, int type,
2770 unsigned int start, unsigned int end)
2772 struct curseg_info *curseg = CURSEG_I(sbi, type);
2775 down_read(&SM_I(sbi)->curseg_lock);
2776 mutex_lock(&curseg->curseg_mutex);
2777 down_write(&SIT_I(sbi)->sentry_lock);
2779 segno = CURSEG_I(sbi, type)->segno;
2780 if (segno < start || segno > end)
2783 if (f2fs_need_SSR(sbi) && get_ssr_segment(sbi, type))
2784 change_curseg(sbi, type);
2786 new_curseg(sbi, type, true);
2788 stat_inc_seg_type(sbi, curseg);
2790 locate_dirty_segment(sbi, segno);
2792 up_write(&SIT_I(sbi)->sentry_lock);
2794 if (segno != curseg->segno)
2795 f2fs_notice(sbi, "For resize: curseg of type %d: %u ==> %u",
2796 type, segno, curseg->segno);
2798 mutex_unlock(&curseg->curseg_mutex);
2799 up_read(&SM_I(sbi)->curseg_lock);
2802 static void __allocate_new_segment(struct f2fs_sb_info *sbi, int type)
2804 struct curseg_info *curseg = CURSEG_I(sbi, type);
2805 unsigned int old_segno;
2807 if (!curseg->inited)
2810 if (!curseg->next_blkoff &&
2811 !get_valid_blocks(sbi, curseg->segno, false) &&
2812 !get_ckpt_valid_blocks(sbi, curseg->segno))
2816 old_segno = curseg->segno;
2817 SIT_I(sbi)->s_ops->allocate_segment(sbi, type, true);
2818 locate_dirty_segment(sbi, old_segno);
2821 void f2fs_allocate_new_segment(struct f2fs_sb_info *sbi, int type)
2823 down_write(&SIT_I(sbi)->sentry_lock);
2824 __allocate_new_segment(sbi, type);
2825 up_write(&SIT_I(sbi)->sentry_lock);
2828 void f2fs_allocate_new_segments(struct f2fs_sb_info *sbi)
2832 down_write(&SIT_I(sbi)->sentry_lock);
2833 for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++)
2834 __allocate_new_segment(sbi, i);
2835 up_write(&SIT_I(sbi)->sentry_lock);
2838 static const struct segment_allocation default_salloc_ops = {
2839 .allocate_segment = allocate_segment_by_default,
2842 bool f2fs_exist_trim_candidates(struct f2fs_sb_info *sbi,
2843 struct cp_control *cpc)
2845 __u64 trim_start = cpc->trim_start;
2846 bool has_candidate = false;
2848 down_write(&SIT_I(sbi)->sentry_lock);
2849 for (; cpc->trim_start <= cpc->trim_end; cpc->trim_start++) {
2850 if (add_discard_addrs(sbi, cpc, true)) {
2851 has_candidate = true;
2855 up_write(&SIT_I(sbi)->sentry_lock);
2857 cpc->trim_start = trim_start;
2858 return has_candidate;
2861 static unsigned int __issue_discard_cmd_range(struct f2fs_sb_info *sbi,
2862 struct discard_policy *dpolicy,
2863 unsigned int start, unsigned int end)
2865 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
2866 struct discard_cmd *prev_dc = NULL, *next_dc = NULL;
2867 struct rb_node **insert_p = NULL, *insert_parent = NULL;
2868 struct discard_cmd *dc;
2869 struct blk_plug plug;
2871 unsigned int trimmed = 0;
2876 mutex_lock(&dcc->cmd_lock);
2877 if (unlikely(dcc->rbtree_check))
2878 f2fs_bug_on(sbi, !f2fs_check_rb_tree_consistence(sbi,
2881 dc = (struct discard_cmd *)f2fs_lookup_rb_tree_ret(&dcc->root,
2883 (struct rb_entry **)&prev_dc,
2884 (struct rb_entry **)&next_dc,
2885 &insert_p, &insert_parent, true, NULL);
2889 blk_start_plug(&plug);
2891 while (dc && dc->lstart <= end) {
2892 struct rb_node *node;
2895 if (dc->len < dpolicy->granularity)
2898 if (dc->state != D_PREP) {
2899 list_move_tail(&dc->list, &dcc->fstrim_list);
2903 err = __submit_discard_cmd(sbi, dpolicy, dc, &issued);
2905 if (issued >= dpolicy->max_requests) {
2906 start = dc->lstart + dc->len;
2909 __remove_discard_cmd(sbi, dc);
2911 blk_finish_plug(&plug);
2912 mutex_unlock(&dcc->cmd_lock);
2913 trimmed += __wait_all_discard_cmd(sbi, NULL);
2914 congestion_wait(BLK_RW_ASYNC, DEFAULT_IO_TIMEOUT);
2918 node = rb_next(&dc->rb_node);
2920 __remove_discard_cmd(sbi, dc);
2921 dc = rb_entry_safe(node, struct discard_cmd, rb_node);
2923 if (fatal_signal_pending(current))
2927 blk_finish_plug(&plug);
2928 mutex_unlock(&dcc->cmd_lock);
2933 int f2fs_trim_fs(struct f2fs_sb_info *sbi, struct fstrim_range *range)
2935 __u64 start = F2FS_BYTES_TO_BLK(range->start);
2936 __u64 end = start + F2FS_BYTES_TO_BLK(range->len) - 1;
2937 unsigned int start_segno, end_segno;
2938 block_t start_block, end_block;
2939 struct cp_control cpc;
2940 struct discard_policy dpolicy;
2941 unsigned long long trimmed = 0;
2943 bool need_align = f2fs_lfs_mode(sbi) && __is_large_section(sbi);
2945 if (start >= MAX_BLKADDR(sbi) || range->len < sbi->blocksize)
2948 if (end < MAIN_BLKADDR(sbi))
2951 if (is_sbi_flag_set(sbi, SBI_NEED_FSCK)) {
2952 f2fs_warn(sbi, "Found FS corruption, run fsck to fix.");
2953 return -EFSCORRUPTED;
2956 /* start/end segment number in main_area */
2957 start_segno = (start <= MAIN_BLKADDR(sbi)) ? 0 : GET_SEGNO(sbi, start);
2958 end_segno = (end >= MAX_BLKADDR(sbi)) ? MAIN_SEGS(sbi) - 1 :
2959 GET_SEGNO(sbi, end);
2961 start_segno = rounddown(start_segno, sbi->segs_per_sec);
2962 end_segno = roundup(end_segno + 1, sbi->segs_per_sec) - 1;
2965 cpc.reason = CP_DISCARD;
2966 cpc.trim_minlen = max_t(__u64, 1, F2FS_BYTES_TO_BLK(range->minlen));
2967 cpc.trim_start = start_segno;
2968 cpc.trim_end = end_segno;
2970 if (sbi->discard_blks == 0)
2973 down_write(&sbi->gc_lock);
2974 err = f2fs_write_checkpoint(sbi, &cpc);
2975 up_write(&sbi->gc_lock);
2980 * We filed discard candidates, but actually we don't need to wait for
2981 * all of them, since they'll be issued in idle time along with runtime
2982 * discard option. User configuration looks like using runtime discard
2983 * or periodic fstrim instead of it.
2985 if (f2fs_realtime_discard_enable(sbi))
2988 start_block = START_BLOCK(sbi, start_segno);
2989 end_block = START_BLOCK(sbi, end_segno + 1);
2991 __init_discard_policy(sbi, &dpolicy, DPOLICY_FSTRIM, cpc.trim_minlen);
2992 trimmed = __issue_discard_cmd_range(sbi, &dpolicy,
2993 start_block, end_block);
2995 trimmed += __wait_discard_cmd_range(sbi, &dpolicy,
2996 start_block, end_block);
2999 range->len = F2FS_BLK_TO_BYTES(trimmed);
3003 static bool __has_curseg_space(struct f2fs_sb_info *sbi, int type)
3005 struct curseg_info *curseg = CURSEG_I(sbi, type);
3007 return curseg->next_blkoff < f2fs_usable_blks_in_seg(sbi,
3011 int f2fs_rw_hint_to_seg_type(enum rw_hint hint)
3014 case WRITE_LIFE_SHORT:
3015 return CURSEG_HOT_DATA;
3016 case WRITE_LIFE_EXTREME:
3017 return CURSEG_COLD_DATA;
3019 return CURSEG_WARM_DATA;
3023 /* This returns write hints for each segment type. This hints will be
3024 * passed down to block layer. There are mapping tables which depend on
3025 * the mount option 'whint_mode'.
3027 * 1) whint_mode=off. F2FS only passes down WRITE_LIFE_NOT_SET.
3029 * 2) whint_mode=user-based. F2FS tries to pass down hints given by users.
3033 * META WRITE_LIFE_NOT_SET
3037 * ioctl(COLD) COLD_DATA WRITE_LIFE_EXTREME
3038 * extension list " "
3041 * WRITE_LIFE_EXTREME COLD_DATA WRITE_LIFE_EXTREME
3042 * WRITE_LIFE_SHORT HOT_DATA WRITE_LIFE_SHORT
3043 * WRITE_LIFE_NOT_SET WARM_DATA WRITE_LIFE_NOT_SET
3044 * WRITE_LIFE_NONE " "
3045 * WRITE_LIFE_MEDIUM " "
3046 * WRITE_LIFE_LONG " "
3049 * WRITE_LIFE_EXTREME COLD_DATA WRITE_LIFE_EXTREME
3050 * WRITE_LIFE_SHORT HOT_DATA WRITE_LIFE_SHORT
3051 * WRITE_LIFE_NOT_SET WARM_DATA WRITE_LIFE_NOT_SET
3052 * WRITE_LIFE_NONE " WRITE_LIFE_NONE
3053 * WRITE_LIFE_MEDIUM " WRITE_LIFE_MEDIUM
3054 * WRITE_LIFE_LONG " WRITE_LIFE_LONG
3056 * 3) whint_mode=fs-based. F2FS passes down hints with its policy.
3060 * META WRITE_LIFE_MEDIUM;
3061 * HOT_NODE WRITE_LIFE_NOT_SET
3063 * COLD_NODE WRITE_LIFE_NONE
3064 * ioctl(COLD) COLD_DATA WRITE_LIFE_EXTREME
3065 * extension list " "
3068 * WRITE_LIFE_EXTREME COLD_DATA WRITE_LIFE_EXTREME
3069 * WRITE_LIFE_SHORT HOT_DATA WRITE_LIFE_SHORT
3070 * WRITE_LIFE_NOT_SET WARM_DATA WRITE_LIFE_LONG
3071 * WRITE_LIFE_NONE " "
3072 * WRITE_LIFE_MEDIUM " "
3073 * WRITE_LIFE_LONG " "
3076 * WRITE_LIFE_EXTREME COLD_DATA WRITE_LIFE_EXTREME
3077 * WRITE_LIFE_SHORT HOT_DATA WRITE_LIFE_SHORT
3078 * WRITE_LIFE_NOT_SET WARM_DATA WRITE_LIFE_NOT_SET
3079 * WRITE_LIFE_NONE " WRITE_LIFE_NONE
3080 * WRITE_LIFE_MEDIUM " WRITE_LIFE_MEDIUM
3081 * WRITE_LIFE_LONG " WRITE_LIFE_LONG
3084 enum rw_hint f2fs_io_type_to_rw_hint(struct f2fs_sb_info *sbi,
3085 enum page_type type, enum temp_type temp)
3087 if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_USER) {
3090 return WRITE_LIFE_NOT_SET;
3091 else if (temp == HOT)
3092 return WRITE_LIFE_SHORT;
3093 else if (temp == COLD)
3094 return WRITE_LIFE_EXTREME;
3096 return WRITE_LIFE_NOT_SET;
3098 } else if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_FS) {
3101 return WRITE_LIFE_LONG;
3102 else if (temp == HOT)
3103 return WRITE_LIFE_SHORT;
3104 else if (temp == COLD)
3105 return WRITE_LIFE_EXTREME;
3106 } else if (type == NODE) {
3107 if (temp == WARM || temp == HOT)
3108 return WRITE_LIFE_NOT_SET;
3109 else if (temp == COLD)
3110 return WRITE_LIFE_NONE;
3111 } else if (type == META) {
3112 return WRITE_LIFE_MEDIUM;
3115 return WRITE_LIFE_NOT_SET;
3118 static int __get_segment_type_2(struct f2fs_io_info *fio)
3120 if (fio->type == DATA)
3121 return CURSEG_HOT_DATA;
3123 return CURSEG_HOT_NODE;
3126 static int __get_segment_type_4(struct f2fs_io_info *fio)
3128 if (fio->type == DATA) {
3129 struct inode *inode = fio->page->mapping->host;
3131 if (S_ISDIR(inode->i_mode))
3132 return CURSEG_HOT_DATA;
3134 return CURSEG_COLD_DATA;
3136 if (IS_DNODE(fio->page) && is_cold_node(fio->page))
3137 return CURSEG_WARM_NODE;
3139 return CURSEG_COLD_NODE;
3143 static int __get_segment_type_6(struct f2fs_io_info *fio)
3145 if (fio->type == DATA) {
3146 struct inode *inode = fio->page->mapping->host;
3148 if (is_cold_data(fio->page) || file_is_cold(inode) ||
3149 f2fs_compressed_file(inode))
3150 return CURSEG_COLD_DATA;
3151 if (file_is_hot(inode) ||
3152 is_inode_flag_set(inode, FI_HOT_DATA) ||
3153 f2fs_is_atomic_file(inode) ||
3154 f2fs_is_volatile_file(inode))
3155 return CURSEG_HOT_DATA;
3156 return f2fs_rw_hint_to_seg_type(inode->i_write_hint);
3158 if (IS_DNODE(fio->page))
3159 return is_cold_node(fio->page) ? CURSEG_WARM_NODE :
3161 return CURSEG_COLD_NODE;
3165 static int __get_segment_type(struct f2fs_io_info *fio)
3169 switch (F2FS_OPTION(fio->sbi).active_logs) {
3171 type = __get_segment_type_2(fio);
3174 type = __get_segment_type_4(fio);
3177 type = __get_segment_type_6(fio);
3180 f2fs_bug_on(fio->sbi, true);
3185 else if (IS_WARM(type))
3192 void f2fs_allocate_data_block(struct f2fs_sb_info *sbi, struct page *page,
3193 block_t old_blkaddr, block_t *new_blkaddr,
3194 struct f2fs_summary *sum, int type,
3195 struct f2fs_io_info *fio)
3197 struct sit_info *sit_i = SIT_I(sbi);
3198 struct curseg_info *curseg = CURSEG_I(sbi, type);
3200 down_read(&SM_I(sbi)->curseg_lock);
3202 mutex_lock(&curseg->curseg_mutex);
3203 down_write(&sit_i->sentry_lock);
3205 *new_blkaddr = NEXT_FREE_BLKADDR(sbi, curseg);
3207 f2fs_wait_discard_bio(sbi, *new_blkaddr);
3210 * __add_sum_entry should be resided under the curseg_mutex
3211 * because, this function updates a summary entry in the
3212 * current summary block.
3214 __add_sum_entry(sbi, type, sum);
3216 __refresh_next_blkoff(sbi, curseg);
3218 stat_inc_block_count(sbi, curseg);
3221 * SIT information should be updated before segment allocation,
3222 * since SSR needs latest valid block information.
3224 update_sit_entry(sbi, *new_blkaddr, 1);
3225 if (GET_SEGNO(sbi, old_blkaddr) != NULL_SEGNO)
3226 update_sit_entry(sbi, old_blkaddr, -1);
3228 if (!__has_curseg_space(sbi, type))
3229 sit_i->s_ops->allocate_segment(sbi, type, false);
3232 * segment dirty status should be updated after segment allocation,
3233 * so we just need to update status only one time after previous
3234 * segment being closed.
3236 locate_dirty_segment(sbi, GET_SEGNO(sbi, old_blkaddr));
3237 locate_dirty_segment(sbi, GET_SEGNO(sbi, *new_blkaddr));
3239 up_write(&sit_i->sentry_lock);
3241 if (page && IS_NODESEG(type)) {
3242 fill_node_footer_blkaddr(page, NEXT_FREE_BLKADDR(sbi, curseg));
3244 f2fs_inode_chksum_set(sbi, page);
3247 if (F2FS_IO_ALIGNED(sbi))
3251 struct f2fs_bio_info *io;
3253 INIT_LIST_HEAD(&fio->list);
3254 fio->in_list = true;
3255 io = sbi->write_io[fio->type] + fio->temp;
3256 spin_lock(&io->io_lock);
3257 list_add_tail(&fio->list, &io->io_list);
3258 spin_unlock(&io->io_lock);
3261 mutex_unlock(&curseg->curseg_mutex);
3263 up_read(&SM_I(sbi)->curseg_lock);
3266 static void update_device_state(struct f2fs_io_info *fio)
3268 struct f2fs_sb_info *sbi = fio->sbi;
3269 unsigned int devidx;
3271 if (!f2fs_is_multi_device(sbi))
3274 devidx = f2fs_target_device_index(sbi, fio->new_blkaddr);
3276 /* update device state for fsync */
3277 f2fs_set_dirty_device(sbi, fio->ino, devidx, FLUSH_INO);
3279 /* update device state for checkpoint */
3280 if (!f2fs_test_bit(devidx, (char *)&sbi->dirty_device)) {
3281 spin_lock(&sbi->dev_lock);
3282 f2fs_set_bit(devidx, (char *)&sbi->dirty_device);
3283 spin_unlock(&sbi->dev_lock);
3287 static void do_write_page(struct f2fs_summary *sum, struct f2fs_io_info *fio)
3289 int type = __get_segment_type(fio);
3290 bool keep_order = (f2fs_lfs_mode(fio->sbi) && type == CURSEG_COLD_DATA);
3293 down_read(&fio->sbi->io_order_lock);
3295 f2fs_allocate_data_block(fio->sbi, fio->page, fio->old_blkaddr,
3296 &fio->new_blkaddr, sum, type, fio);
3297 if (GET_SEGNO(fio->sbi, fio->old_blkaddr) != NULL_SEGNO)
3298 invalidate_mapping_pages(META_MAPPING(fio->sbi),
3299 fio->old_blkaddr, fio->old_blkaddr);
3301 /* writeout dirty page into bdev */
3302 f2fs_submit_page_write(fio);
3304 fio->old_blkaddr = fio->new_blkaddr;
3308 update_device_state(fio);
3311 up_read(&fio->sbi->io_order_lock);
3314 void f2fs_do_write_meta_page(struct f2fs_sb_info *sbi, struct page *page,
3315 enum iostat_type io_type)
3317 struct f2fs_io_info fio = {
3322 .op_flags = REQ_SYNC | REQ_META | REQ_PRIO,
3323 .old_blkaddr = page->index,
3324 .new_blkaddr = page->index,
3326 .encrypted_page = NULL,
3330 if (unlikely(page->index >= MAIN_BLKADDR(sbi)))
3331 fio.op_flags &= ~REQ_META;
3333 set_page_writeback(page);
3334 ClearPageError(page);
3335 f2fs_submit_page_write(&fio);
3337 stat_inc_meta_count(sbi, page->index);
3338 f2fs_update_iostat(sbi, io_type, F2FS_BLKSIZE);
3341 void f2fs_do_write_node_page(unsigned int nid, struct f2fs_io_info *fio)
3343 struct f2fs_summary sum;
3345 set_summary(&sum, nid, 0, 0);
3346 do_write_page(&sum, fio);
3348 f2fs_update_iostat(fio->sbi, fio->io_type, F2FS_BLKSIZE);
3351 void f2fs_outplace_write_data(struct dnode_of_data *dn,
3352 struct f2fs_io_info *fio)
3354 struct f2fs_sb_info *sbi = fio->sbi;
3355 struct f2fs_summary sum;
3357 f2fs_bug_on(sbi, dn->data_blkaddr == NULL_ADDR);
3358 set_summary(&sum, dn->nid, dn->ofs_in_node, fio->version);
3359 do_write_page(&sum, fio);
3360 f2fs_update_data_blkaddr(dn, fio->new_blkaddr);
3362 f2fs_update_iostat(sbi, fio->io_type, F2FS_BLKSIZE);
3365 int f2fs_inplace_write_data(struct f2fs_io_info *fio)
3368 struct f2fs_sb_info *sbi = fio->sbi;
3371 fio->new_blkaddr = fio->old_blkaddr;
3372 /* i/o temperature is needed for passing down write hints */
3373 __get_segment_type(fio);
3375 segno = GET_SEGNO(sbi, fio->new_blkaddr);
3377 if (!IS_DATASEG(get_seg_entry(sbi, segno)->type)) {
3378 set_sbi_flag(sbi, SBI_NEED_FSCK);
3379 f2fs_warn(sbi, "%s: incorrect segment(%u) type, run fsck to fix.",
3381 return -EFSCORRUPTED;
3384 stat_inc_inplace_blocks(fio->sbi);
3386 if (fio->bio && !(SM_I(sbi)->ipu_policy & (1 << F2FS_IPU_NOCACHE)))
3387 err = f2fs_merge_page_bio(fio);
3389 err = f2fs_submit_page_bio(fio);
3391 update_device_state(fio);
3392 f2fs_update_iostat(fio->sbi, fio->io_type, F2FS_BLKSIZE);
3398 static inline int __f2fs_get_curseg(struct f2fs_sb_info *sbi,
3403 for (i = CURSEG_HOT_DATA; i < NO_CHECK_TYPE; i++) {
3404 if (CURSEG_I(sbi, i)->segno == segno)
3410 void f2fs_do_replace_block(struct f2fs_sb_info *sbi, struct f2fs_summary *sum,
3411 block_t old_blkaddr, block_t new_blkaddr,
3412 bool recover_curseg, bool recover_newaddr)
3414 struct sit_info *sit_i = SIT_I(sbi);
3415 struct curseg_info *curseg;
3416 unsigned int segno, old_cursegno;
3417 struct seg_entry *se;
3419 unsigned short old_blkoff;
3421 segno = GET_SEGNO(sbi, new_blkaddr);
3422 se = get_seg_entry(sbi, segno);
3425 down_write(&SM_I(sbi)->curseg_lock);
3427 if (!recover_curseg) {
3428 /* for recovery flow */
3429 if (se->valid_blocks == 0 && !IS_CURSEG(sbi, segno)) {
3430 if (old_blkaddr == NULL_ADDR)
3431 type = CURSEG_COLD_DATA;
3433 type = CURSEG_WARM_DATA;
3436 if (IS_CURSEG(sbi, segno)) {
3437 /* se->type is volatile as SSR allocation */
3438 type = __f2fs_get_curseg(sbi, segno);
3439 f2fs_bug_on(sbi, type == NO_CHECK_TYPE);
3441 type = CURSEG_WARM_DATA;
3445 f2fs_bug_on(sbi, !IS_DATASEG(type));
3446 curseg = CURSEG_I(sbi, type);
3448 mutex_lock(&curseg->curseg_mutex);
3449 down_write(&sit_i->sentry_lock);
3451 old_cursegno = curseg->segno;
3452 old_blkoff = curseg->next_blkoff;
3454 /* change the current segment */
3455 if (segno != curseg->segno) {
3456 curseg->next_segno = segno;
3457 change_curseg(sbi, type);
3460 curseg->next_blkoff = GET_BLKOFF_FROM_SEG0(sbi, new_blkaddr);
3461 __add_sum_entry(sbi, type, sum);
3463 if (!recover_curseg || recover_newaddr)
3464 update_sit_entry(sbi, new_blkaddr, 1);
3465 if (GET_SEGNO(sbi, old_blkaddr) != NULL_SEGNO) {
3466 invalidate_mapping_pages(META_MAPPING(sbi),
3467 old_blkaddr, old_blkaddr);
3468 update_sit_entry(sbi, old_blkaddr, -1);
3471 locate_dirty_segment(sbi, GET_SEGNO(sbi, old_blkaddr));
3472 locate_dirty_segment(sbi, GET_SEGNO(sbi, new_blkaddr));
3474 locate_dirty_segment(sbi, old_cursegno);
3476 if (recover_curseg) {
3477 if (old_cursegno != curseg->segno) {
3478 curseg->next_segno = old_cursegno;
3479 change_curseg(sbi, type);
3481 curseg->next_blkoff = old_blkoff;
3484 up_write(&sit_i->sentry_lock);
3485 mutex_unlock(&curseg->curseg_mutex);
3486 up_write(&SM_I(sbi)->curseg_lock);
3489 void f2fs_replace_block(struct f2fs_sb_info *sbi, struct dnode_of_data *dn,
3490 block_t old_addr, block_t new_addr,
3491 unsigned char version, bool recover_curseg,
3492 bool recover_newaddr)
3494 struct f2fs_summary sum;
3496 set_summary(&sum, dn->nid, dn->ofs_in_node, version);
3498 f2fs_do_replace_block(sbi, &sum, old_addr, new_addr,
3499 recover_curseg, recover_newaddr);
3501 f2fs_update_data_blkaddr(dn, new_addr);
3504 void f2fs_wait_on_page_writeback(struct page *page,
3505 enum page_type type, bool ordered, bool locked)
3507 if (PageWriteback(page)) {
3508 struct f2fs_sb_info *sbi = F2FS_P_SB(page);
3510 /* submit cached LFS IO */
3511 f2fs_submit_merged_write_cond(sbi, NULL, page, 0, type);
3512 /* sbumit cached IPU IO */
3513 f2fs_submit_merged_ipu_write(sbi, NULL, page);
3515 wait_on_page_writeback(page);
3516 f2fs_bug_on(sbi, locked && PageWriteback(page));
3518 wait_for_stable_page(page);
3523 void f2fs_wait_on_block_writeback(struct inode *inode, block_t blkaddr)
3525 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3528 if (!f2fs_post_read_required(inode))
3531 if (!__is_valid_data_blkaddr(blkaddr))
3534 cpage = find_lock_page(META_MAPPING(sbi), blkaddr);
3536 f2fs_wait_on_page_writeback(cpage, DATA, true, true);
3537 f2fs_put_page(cpage, 1);
3541 void f2fs_wait_on_block_writeback_range(struct inode *inode, block_t blkaddr,
3546 for (i = 0; i < len; i++)
3547 f2fs_wait_on_block_writeback(inode, blkaddr + i);
3550 static int read_compacted_summaries(struct f2fs_sb_info *sbi)
3552 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
3553 struct curseg_info *seg_i;
3554 unsigned char *kaddr;
3559 start = start_sum_block(sbi);
3561 page = f2fs_get_meta_page(sbi, start++);
3563 return PTR_ERR(page);
3564 kaddr = (unsigned char *)page_address(page);
3566 /* Step 1: restore nat cache */
3567 seg_i = CURSEG_I(sbi, CURSEG_HOT_DATA);
3568 memcpy(seg_i->journal, kaddr, SUM_JOURNAL_SIZE);
3570 /* Step 2: restore sit cache */
3571 seg_i = CURSEG_I(sbi, CURSEG_COLD_DATA);
3572 memcpy(seg_i->journal, kaddr + SUM_JOURNAL_SIZE, SUM_JOURNAL_SIZE);
3573 offset = 2 * SUM_JOURNAL_SIZE;
3575 /* Step 3: restore summary entries */
3576 for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) {
3577 unsigned short blk_off;
3580 seg_i = CURSEG_I(sbi, i);
3581 segno = le32_to_cpu(ckpt->cur_data_segno[i]);
3582 blk_off = le16_to_cpu(ckpt->cur_data_blkoff[i]);
3583 seg_i->next_segno = segno;
3584 reset_curseg(sbi, i, 0);
3585 seg_i->alloc_type = ckpt->alloc_type[i];
3586 seg_i->next_blkoff = blk_off;
3588 if (seg_i->alloc_type == SSR)
3589 blk_off = sbi->blocks_per_seg;
3591 for (j = 0; j < blk_off; j++) {
3592 struct f2fs_summary *s;
3593 s = (struct f2fs_summary *)(kaddr + offset);
3594 seg_i->sum_blk->entries[j] = *s;
3595 offset += SUMMARY_SIZE;
3596 if (offset + SUMMARY_SIZE <= PAGE_SIZE -
3600 f2fs_put_page(page, 1);
3603 page = f2fs_get_meta_page(sbi, start++);
3605 return PTR_ERR(page);
3606 kaddr = (unsigned char *)page_address(page);
3610 f2fs_put_page(page, 1);
3614 static int read_normal_summaries(struct f2fs_sb_info *sbi, int type)
3616 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
3617 struct f2fs_summary_block *sum;
3618 struct curseg_info *curseg;
3620 unsigned short blk_off;
3621 unsigned int segno = 0;
3622 block_t blk_addr = 0;
3625 /* get segment number and block addr */
3626 if (IS_DATASEG(type)) {
3627 segno = le32_to_cpu(ckpt->cur_data_segno[type]);
3628 blk_off = le16_to_cpu(ckpt->cur_data_blkoff[type -
3630 if (__exist_node_summaries(sbi))
3631 blk_addr = sum_blk_addr(sbi, NR_CURSEG_PERSIST_TYPE, type);
3633 blk_addr = sum_blk_addr(sbi, NR_CURSEG_DATA_TYPE, type);
3635 segno = le32_to_cpu(ckpt->cur_node_segno[type -
3637 blk_off = le16_to_cpu(ckpt->cur_node_blkoff[type -
3639 if (__exist_node_summaries(sbi))
3640 blk_addr = sum_blk_addr(sbi, NR_CURSEG_NODE_TYPE,
3641 type - CURSEG_HOT_NODE);
3643 blk_addr = GET_SUM_BLOCK(sbi, segno);
3646 new = f2fs_get_meta_page(sbi, blk_addr);
3648 return PTR_ERR(new);
3649 sum = (struct f2fs_summary_block *)page_address(new);
3651 if (IS_NODESEG(type)) {
3652 if (__exist_node_summaries(sbi)) {
3653 struct f2fs_summary *ns = &sum->entries[0];
3655 for (i = 0; i < sbi->blocks_per_seg; i++, ns++) {
3657 ns->ofs_in_node = 0;
3660 err = f2fs_restore_node_summary(sbi, segno, sum);
3666 /* set uncompleted segment to curseg */
3667 curseg = CURSEG_I(sbi, type);
3668 mutex_lock(&curseg->curseg_mutex);
3670 /* update journal info */
3671 down_write(&curseg->journal_rwsem);
3672 memcpy(curseg->journal, &sum->journal, SUM_JOURNAL_SIZE);
3673 up_write(&curseg->journal_rwsem);
3675 memcpy(curseg->sum_blk->entries, sum->entries, SUM_ENTRY_SIZE);
3676 memcpy(&curseg->sum_blk->footer, &sum->footer, SUM_FOOTER_SIZE);
3677 curseg->next_segno = segno;
3678 reset_curseg(sbi, type, 0);
3679 curseg->alloc_type = ckpt->alloc_type[type];
3680 curseg->next_blkoff = blk_off;
3681 mutex_unlock(&curseg->curseg_mutex);
3683 f2fs_put_page(new, 1);
3687 static int restore_curseg_summaries(struct f2fs_sb_info *sbi)
3689 struct f2fs_journal *sit_j = CURSEG_I(sbi, CURSEG_COLD_DATA)->journal;
3690 struct f2fs_journal *nat_j = CURSEG_I(sbi, CURSEG_HOT_DATA)->journal;
3691 int type = CURSEG_HOT_DATA;
3694 if (is_set_ckpt_flags(sbi, CP_COMPACT_SUM_FLAG)) {
3695 int npages = f2fs_npages_for_summary_flush(sbi, true);
3698 f2fs_ra_meta_pages(sbi, start_sum_block(sbi), npages,
3701 /* restore for compacted data summary */
3702 err = read_compacted_summaries(sbi);
3705 type = CURSEG_HOT_NODE;
3708 if (__exist_node_summaries(sbi))
3709 f2fs_ra_meta_pages(sbi,
3710 sum_blk_addr(sbi, NR_CURSEG_PERSIST_TYPE, type),
3711 NR_CURSEG_PERSIST_TYPE - type, META_CP, true);
3713 for (; type <= CURSEG_COLD_NODE; type++) {
3714 err = read_normal_summaries(sbi, type);
3719 /* sanity check for summary blocks */
3720 if (nats_in_cursum(nat_j) > NAT_JOURNAL_ENTRIES ||
3721 sits_in_cursum(sit_j) > SIT_JOURNAL_ENTRIES) {
3722 f2fs_err(sbi, "invalid journal entries nats %u sits %u\n",
3723 nats_in_cursum(nat_j), sits_in_cursum(sit_j));
3730 static void write_compacted_summaries(struct f2fs_sb_info *sbi, block_t blkaddr)
3733 unsigned char *kaddr;
3734 struct f2fs_summary *summary;
3735 struct curseg_info *seg_i;
3736 int written_size = 0;
3739 page = f2fs_grab_meta_page(sbi, blkaddr++);
3740 kaddr = (unsigned char *)page_address(page);
3741 memset(kaddr, 0, PAGE_SIZE);
3743 /* Step 1: write nat cache */
3744 seg_i = CURSEG_I(sbi, CURSEG_HOT_DATA);
3745 memcpy(kaddr, seg_i->journal, SUM_JOURNAL_SIZE);
3746 written_size += SUM_JOURNAL_SIZE;
3748 /* Step 2: write sit cache */
3749 seg_i = CURSEG_I(sbi, CURSEG_COLD_DATA);
3750 memcpy(kaddr + written_size, seg_i->journal, SUM_JOURNAL_SIZE);
3751 written_size += SUM_JOURNAL_SIZE;
3753 /* Step 3: write summary entries */
3754 for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) {
3755 unsigned short blkoff;
3756 seg_i = CURSEG_I(sbi, i);
3757 if (sbi->ckpt->alloc_type[i] == SSR)
3758 blkoff = sbi->blocks_per_seg;
3760 blkoff = curseg_blkoff(sbi, i);
3762 for (j = 0; j < blkoff; j++) {
3764 page = f2fs_grab_meta_page(sbi, blkaddr++);
3765 kaddr = (unsigned char *)page_address(page);
3766 memset(kaddr, 0, PAGE_SIZE);
3769 summary = (struct f2fs_summary *)(kaddr + written_size);
3770 *summary = seg_i->sum_blk->entries[j];
3771 written_size += SUMMARY_SIZE;
3773 if (written_size + SUMMARY_SIZE <= PAGE_SIZE -
3777 set_page_dirty(page);
3778 f2fs_put_page(page, 1);
3783 set_page_dirty(page);
3784 f2fs_put_page(page, 1);
3788 static void write_normal_summaries(struct f2fs_sb_info *sbi,
3789 block_t blkaddr, int type)
3792 if (IS_DATASEG(type))
3793 end = type + NR_CURSEG_DATA_TYPE;
3795 end = type + NR_CURSEG_NODE_TYPE;
3797 for (i = type; i < end; i++)
3798 write_current_sum_page(sbi, i, blkaddr + (i - type));
3801 void f2fs_write_data_summaries(struct f2fs_sb_info *sbi, block_t start_blk)
3803 if (is_set_ckpt_flags(sbi, CP_COMPACT_SUM_FLAG))
3804 write_compacted_summaries(sbi, start_blk);
3806 write_normal_summaries(sbi, start_blk, CURSEG_HOT_DATA);
3809 void f2fs_write_node_summaries(struct f2fs_sb_info *sbi, block_t start_blk)
3811 write_normal_summaries(sbi, start_blk, CURSEG_HOT_NODE);
3814 int f2fs_lookup_journal_in_cursum(struct f2fs_journal *journal, int type,
3815 unsigned int val, int alloc)
3819 if (type == NAT_JOURNAL) {
3820 for (i = 0; i < nats_in_cursum(journal); i++) {
3821 if (le32_to_cpu(nid_in_journal(journal, i)) == val)
3824 if (alloc && __has_cursum_space(journal, 1, NAT_JOURNAL))
3825 return update_nats_in_cursum(journal, 1);
3826 } else if (type == SIT_JOURNAL) {
3827 for (i = 0; i < sits_in_cursum(journal); i++)
3828 if (le32_to_cpu(segno_in_journal(journal, i)) == val)
3830 if (alloc && __has_cursum_space(journal, 1, SIT_JOURNAL))
3831 return update_sits_in_cursum(journal, 1);
3836 static struct page *get_current_sit_page(struct f2fs_sb_info *sbi,
3839 return f2fs_get_meta_page_nofail(sbi, current_sit_addr(sbi, segno));
3842 static struct page *get_next_sit_page(struct f2fs_sb_info *sbi,
3845 struct sit_info *sit_i = SIT_I(sbi);
3847 pgoff_t src_off, dst_off;
3849 src_off = current_sit_addr(sbi, start);
3850 dst_off = next_sit_addr(sbi, src_off);
3852 page = f2fs_grab_meta_page(sbi, dst_off);
3853 seg_info_to_sit_page(sbi, page, start);
3855 set_page_dirty(page);
3856 set_to_next_sit(sit_i, start);
3861 static struct sit_entry_set *grab_sit_entry_set(void)
3863 struct sit_entry_set *ses =
3864 f2fs_kmem_cache_alloc(sit_entry_set_slab, GFP_NOFS);
3867 INIT_LIST_HEAD(&ses->set_list);
3871 static void release_sit_entry_set(struct sit_entry_set *ses)
3873 list_del(&ses->set_list);
3874 kmem_cache_free(sit_entry_set_slab, ses);
3877 static void adjust_sit_entry_set(struct sit_entry_set *ses,
3878 struct list_head *head)
3880 struct sit_entry_set *next = ses;
3882 if (list_is_last(&ses->set_list, head))
3885 list_for_each_entry_continue(next, head, set_list)
3886 if (ses->entry_cnt <= next->entry_cnt)
3889 list_move_tail(&ses->set_list, &next->set_list);
3892 static void add_sit_entry(unsigned int segno, struct list_head *head)
3894 struct sit_entry_set *ses;
3895 unsigned int start_segno = START_SEGNO(segno);
3897 list_for_each_entry(ses, head, set_list) {
3898 if (ses->start_segno == start_segno) {
3900 adjust_sit_entry_set(ses, head);
3905 ses = grab_sit_entry_set();
3907 ses->start_segno = start_segno;
3909 list_add(&ses->set_list, head);
3912 static void add_sits_in_set(struct f2fs_sb_info *sbi)
3914 struct f2fs_sm_info *sm_info = SM_I(sbi);
3915 struct list_head *set_list = &sm_info->sit_entry_set;
3916 unsigned long *bitmap = SIT_I(sbi)->dirty_sentries_bitmap;
3919 for_each_set_bit(segno, bitmap, MAIN_SEGS(sbi))
3920 add_sit_entry(segno, set_list);
3923 static void remove_sits_in_journal(struct f2fs_sb_info *sbi)
3925 struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA);
3926 struct f2fs_journal *journal = curseg->journal;
3929 down_write(&curseg->journal_rwsem);
3930 for (i = 0; i < sits_in_cursum(journal); i++) {
3934 segno = le32_to_cpu(segno_in_journal(journal, i));
3935 dirtied = __mark_sit_entry_dirty(sbi, segno);
3938 add_sit_entry(segno, &SM_I(sbi)->sit_entry_set);
3940 update_sits_in_cursum(journal, -i);
3941 up_write(&curseg->journal_rwsem);
3945 * CP calls this function, which flushes SIT entries including sit_journal,
3946 * and moves prefree segs to free segs.
3948 void f2fs_flush_sit_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc)
3950 struct sit_info *sit_i = SIT_I(sbi);
3951 unsigned long *bitmap = sit_i->dirty_sentries_bitmap;
3952 struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA);
3953 struct f2fs_journal *journal = curseg->journal;
3954 struct sit_entry_set *ses, *tmp;
3955 struct list_head *head = &SM_I(sbi)->sit_entry_set;
3956 bool to_journal = !is_sbi_flag_set(sbi, SBI_IS_RESIZEFS);
3957 struct seg_entry *se;
3959 down_write(&sit_i->sentry_lock);
3961 if (!sit_i->dirty_sentries)
3965 * add and account sit entries of dirty bitmap in sit entry
3968 add_sits_in_set(sbi);
3971 * if there are no enough space in journal to store dirty sit
3972 * entries, remove all entries from journal and add and account
3973 * them in sit entry set.
3975 if (!__has_cursum_space(journal, sit_i->dirty_sentries, SIT_JOURNAL) ||
3977 remove_sits_in_journal(sbi);
3980 * there are two steps to flush sit entries:
3981 * #1, flush sit entries to journal in current cold data summary block.
3982 * #2, flush sit entries to sit page.
3984 list_for_each_entry_safe(ses, tmp, head, set_list) {
3985 struct page *page = NULL;
3986 struct f2fs_sit_block *raw_sit = NULL;
3987 unsigned int start_segno = ses->start_segno;
3988 unsigned int end = min(start_segno + SIT_ENTRY_PER_BLOCK,
3989 (unsigned long)MAIN_SEGS(sbi));
3990 unsigned int segno = start_segno;
3993 !__has_cursum_space(journal, ses->entry_cnt, SIT_JOURNAL))
3997 down_write(&curseg->journal_rwsem);
3999 page = get_next_sit_page(sbi, start_segno);
4000 raw_sit = page_address(page);
4003 /* flush dirty sit entries in region of current sit set */
4004 for_each_set_bit_from(segno, bitmap, end) {
4005 int offset, sit_offset;
4007 se = get_seg_entry(sbi, segno);
4008 #ifdef CONFIG_F2FS_CHECK_FS
4009 if (memcmp(se->cur_valid_map, se->cur_valid_map_mir,
4010 SIT_VBLOCK_MAP_SIZE))
4011 f2fs_bug_on(sbi, 1);
4014 /* add discard candidates */
4015 if (!(cpc->reason & CP_DISCARD)) {
4016 cpc->trim_start = segno;
4017 add_discard_addrs(sbi, cpc, false);
4021 offset = f2fs_lookup_journal_in_cursum(journal,
4022 SIT_JOURNAL, segno, 1);
4023 f2fs_bug_on(sbi, offset < 0);
4024 segno_in_journal(journal, offset) =
4026 seg_info_to_raw_sit(se,
4027 &sit_in_journal(journal, offset));
4028 check_block_count(sbi, segno,
4029 &sit_in_journal(journal, offset));
4031 sit_offset = SIT_ENTRY_OFFSET(sit_i, segno);
4032 seg_info_to_raw_sit(se,
4033 &raw_sit->entries[sit_offset]);
4034 check_block_count(sbi, segno,
4035 &raw_sit->entries[sit_offset]);
4038 __clear_bit(segno, bitmap);
4039 sit_i->dirty_sentries--;
4044 up_write(&curseg->journal_rwsem);
4046 f2fs_put_page(page, 1);
4048 f2fs_bug_on(sbi, ses->entry_cnt);
4049 release_sit_entry_set(ses);
4052 f2fs_bug_on(sbi, !list_empty(head));
4053 f2fs_bug_on(sbi, sit_i->dirty_sentries);
4055 if (cpc->reason & CP_DISCARD) {
4056 __u64 trim_start = cpc->trim_start;
4058 for (; cpc->trim_start <= cpc->trim_end; cpc->trim_start++)
4059 add_discard_addrs(sbi, cpc, false);
4061 cpc->trim_start = trim_start;
4063 up_write(&sit_i->sentry_lock);
4065 set_prefree_as_free_segments(sbi);
4068 static int build_sit_info(struct f2fs_sb_info *sbi)
4070 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
4071 struct sit_info *sit_i;
4072 unsigned int sit_segs, start;
4073 char *src_bitmap, *bitmap;
4074 unsigned int bitmap_size, main_bitmap_size, sit_bitmap_size;
4076 /* allocate memory for SIT information */
4077 sit_i = f2fs_kzalloc(sbi, sizeof(struct sit_info), GFP_KERNEL);
4081 SM_I(sbi)->sit_info = sit_i;
4084 f2fs_kvzalloc(sbi, array_size(sizeof(struct seg_entry),
4087 if (!sit_i->sentries)
4090 main_bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi));
4091 sit_i->dirty_sentries_bitmap = f2fs_kvzalloc(sbi, main_bitmap_size,
4093 if (!sit_i->dirty_sentries_bitmap)
4096 #ifdef CONFIG_F2FS_CHECK_FS
4097 bitmap_size = MAIN_SEGS(sbi) * SIT_VBLOCK_MAP_SIZE * 4;
4099 bitmap_size = MAIN_SEGS(sbi) * SIT_VBLOCK_MAP_SIZE * 3;
4101 sit_i->bitmap = f2fs_kvzalloc(sbi, bitmap_size, GFP_KERNEL);
4105 bitmap = sit_i->bitmap;
4107 for (start = 0; start < MAIN_SEGS(sbi); start++) {
4108 sit_i->sentries[start].cur_valid_map = bitmap;
4109 bitmap += SIT_VBLOCK_MAP_SIZE;
4111 sit_i->sentries[start].ckpt_valid_map = bitmap;
4112 bitmap += SIT_VBLOCK_MAP_SIZE;
4114 #ifdef CONFIG_F2FS_CHECK_FS
4115 sit_i->sentries[start].cur_valid_map_mir = bitmap;
4116 bitmap += SIT_VBLOCK_MAP_SIZE;
4119 sit_i->sentries[start].discard_map = bitmap;
4120 bitmap += SIT_VBLOCK_MAP_SIZE;
4123 sit_i->tmp_map = f2fs_kzalloc(sbi, SIT_VBLOCK_MAP_SIZE, GFP_KERNEL);
4124 if (!sit_i->tmp_map)
4127 if (__is_large_section(sbi)) {
4128 sit_i->sec_entries =
4129 f2fs_kvzalloc(sbi, array_size(sizeof(struct sec_entry),
4132 if (!sit_i->sec_entries)
4136 /* get information related with SIT */
4137 sit_segs = le32_to_cpu(raw_super->segment_count_sit) >> 1;
4139 /* setup SIT bitmap from ckeckpoint pack */
4140 sit_bitmap_size = __bitmap_size(sbi, SIT_BITMAP);
4141 src_bitmap = __bitmap_ptr(sbi, SIT_BITMAP);
4143 sit_i->sit_bitmap = kmemdup(src_bitmap, sit_bitmap_size, GFP_KERNEL);
4144 if (!sit_i->sit_bitmap)
4147 #ifdef CONFIG_F2FS_CHECK_FS
4148 sit_i->sit_bitmap_mir = kmemdup(src_bitmap,
4149 sit_bitmap_size, GFP_KERNEL);
4150 if (!sit_i->sit_bitmap_mir)
4153 sit_i->invalid_segmap = f2fs_kvzalloc(sbi,
4154 main_bitmap_size, GFP_KERNEL);
4155 if (!sit_i->invalid_segmap)
4159 /* init SIT information */
4160 sit_i->s_ops = &default_salloc_ops;
4162 sit_i->sit_base_addr = le32_to_cpu(raw_super->sit_blkaddr);
4163 sit_i->sit_blocks = sit_segs << sbi->log_blocks_per_seg;
4164 sit_i->written_valid_blocks = 0;
4165 sit_i->bitmap_size = sit_bitmap_size;
4166 sit_i->dirty_sentries = 0;
4167 sit_i->sents_per_block = SIT_ENTRY_PER_BLOCK;
4168 sit_i->elapsed_time = le64_to_cpu(sbi->ckpt->elapsed_time);
4169 sit_i->mounted_time = ktime_get_boottime_seconds();
4170 init_rwsem(&sit_i->sentry_lock);
4174 static int build_free_segmap(struct f2fs_sb_info *sbi)
4176 struct free_segmap_info *free_i;
4177 unsigned int bitmap_size, sec_bitmap_size;
4179 /* allocate memory for free segmap information */
4180 free_i = f2fs_kzalloc(sbi, sizeof(struct free_segmap_info), GFP_KERNEL);
4184 SM_I(sbi)->free_info = free_i;
4186 bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi));
4187 free_i->free_segmap = f2fs_kvmalloc(sbi, bitmap_size, GFP_KERNEL);
4188 if (!free_i->free_segmap)
4191 sec_bitmap_size = f2fs_bitmap_size(MAIN_SECS(sbi));
4192 free_i->free_secmap = f2fs_kvmalloc(sbi, sec_bitmap_size, GFP_KERNEL);
4193 if (!free_i->free_secmap)
4196 /* set all segments as dirty temporarily */
4197 memset(free_i->free_segmap, 0xff, bitmap_size);
4198 memset(free_i->free_secmap, 0xff, sec_bitmap_size);
4200 /* init free segmap information */
4201 free_i->start_segno = GET_SEGNO_FROM_SEG0(sbi, MAIN_BLKADDR(sbi));
4202 free_i->free_segments = 0;
4203 free_i->free_sections = 0;
4204 spin_lock_init(&free_i->segmap_lock);
4208 static int build_curseg(struct f2fs_sb_info *sbi)
4210 struct curseg_info *array;
4213 array = f2fs_kzalloc(sbi, array_size(NR_CURSEG_TYPE,
4214 sizeof(*array)), GFP_KERNEL);
4218 SM_I(sbi)->curseg_array = array;
4220 for (i = 0; i < NO_CHECK_TYPE; i++) {
4221 mutex_init(&array[i].curseg_mutex);
4222 array[i].sum_blk = f2fs_kzalloc(sbi, PAGE_SIZE, GFP_KERNEL);
4223 if (!array[i].sum_blk)
4225 init_rwsem(&array[i].journal_rwsem);
4226 array[i].journal = f2fs_kzalloc(sbi,
4227 sizeof(struct f2fs_journal), GFP_KERNEL);
4228 if (!array[i].journal)
4230 if (i < NR_PERSISTENT_LOG)
4231 array[i].seg_type = CURSEG_HOT_DATA + i;
4232 else if (i == CURSEG_COLD_DATA_PINNED)
4233 array[i].seg_type = CURSEG_COLD_DATA;
4234 array[i].segno = NULL_SEGNO;
4235 array[i].next_blkoff = 0;
4236 array[i].inited = false;
4238 return restore_curseg_summaries(sbi);
4241 static int build_sit_entries(struct f2fs_sb_info *sbi)
4243 struct sit_info *sit_i = SIT_I(sbi);
4244 struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA);
4245 struct f2fs_journal *journal = curseg->journal;
4246 struct seg_entry *se;
4247 struct f2fs_sit_entry sit;
4248 int sit_blk_cnt = SIT_BLK_CNT(sbi);
4249 unsigned int i, start, end;
4250 unsigned int readed, start_blk = 0;
4252 block_t total_node_blocks = 0;
4255 readed = f2fs_ra_meta_pages(sbi, start_blk, BIO_MAX_PAGES,
4258 start = start_blk * sit_i->sents_per_block;
4259 end = (start_blk + readed) * sit_i->sents_per_block;
4261 for (; start < end && start < MAIN_SEGS(sbi); start++) {
4262 struct f2fs_sit_block *sit_blk;
4265 se = &sit_i->sentries[start];
4266 page = get_current_sit_page(sbi, start);
4268 return PTR_ERR(page);
4269 sit_blk = (struct f2fs_sit_block *)page_address(page);
4270 sit = sit_blk->entries[SIT_ENTRY_OFFSET(sit_i, start)];
4271 f2fs_put_page(page, 1);
4273 err = check_block_count(sbi, start, &sit);
4276 seg_info_from_raw_sit(se, &sit);
4277 if (IS_NODESEG(se->type))
4278 total_node_blocks += se->valid_blocks;
4280 /* build discard map only one time */
4281 if (is_set_ckpt_flags(sbi, CP_TRIMMED_FLAG)) {
4282 memset(se->discard_map, 0xff,
4283 SIT_VBLOCK_MAP_SIZE);
4285 memcpy(se->discard_map,
4287 SIT_VBLOCK_MAP_SIZE);
4288 sbi->discard_blks +=
4289 sbi->blocks_per_seg -
4293 if (__is_large_section(sbi))
4294 get_sec_entry(sbi, start)->valid_blocks +=
4297 start_blk += readed;
4298 } while (start_blk < sit_blk_cnt);
4300 down_read(&curseg->journal_rwsem);
4301 for (i = 0; i < sits_in_cursum(journal); i++) {
4302 unsigned int old_valid_blocks;
4304 start = le32_to_cpu(segno_in_journal(journal, i));
4305 if (start >= MAIN_SEGS(sbi)) {
4306 f2fs_err(sbi, "Wrong journal entry on segno %u",
4308 err = -EFSCORRUPTED;
4312 se = &sit_i->sentries[start];
4313 sit = sit_in_journal(journal, i);
4315 old_valid_blocks = se->valid_blocks;
4316 if (IS_NODESEG(se->type))
4317 total_node_blocks -= old_valid_blocks;
4319 err = check_block_count(sbi, start, &sit);
4322 seg_info_from_raw_sit(se, &sit);
4323 if (IS_NODESEG(se->type))
4324 total_node_blocks += se->valid_blocks;
4326 if (is_set_ckpt_flags(sbi, CP_TRIMMED_FLAG)) {
4327 memset(se->discard_map, 0xff, SIT_VBLOCK_MAP_SIZE);
4329 memcpy(se->discard_map, se->cur_valid_map,
4330 SIT_VBLOCK_MAP_SIZE);
4331 sbi->discard_blks += old_valid_blocks;
4332 sbi->discard_blks -= se->valid_blocks;
4335 if (__is_large_section(sbi)) {
4336 get_sec_entry(sbi, start)->valid_blocks +=
4338 get_sec_entry(sbi, start)->valid_blocks -=
4342 up_read(&curseg->journal_rwsem);
4344 if (!err && total_node_blocks != valid_node_count(sbi)) {
4345 f2fs_err(sbi, "SIT is corrupted node# %u vs %u",
4346 total_node_blocks, valid_node_count(sbi));
4347 err = -EFSCORRUPTED;
4353 static void init_free_segmap(struct f2fs_sb_info *sbi)
4357 struct seg_entry *sentry;
4359 for (start = 0; start < MAIN_SEGS(sbi); start++) {
4360 if (f2fs_usable_blks_in_seg(sbi, start) == 0)
4362 sentry = get_seg_entry(sbi, start);
4363 if (!sentry->valid_blocks)
4364 __set_free(sbi, start);
4366 SIT_I(sbi)->written_valid_blocks +=
4367 sentry->valid_blocks;
4370 /* set use the current segments */
4371 for (type = CURSEG_HOT_DATA; type <= CURSEG_COLD_NODE; type++) {
4372 struct curseg_info *curseg_t = CURSEG_I(sbi, type);
4373 __set_test_and_inuse(sbi, curseg_t->segno);
4377 static void init_dirty_segmap(struct f2fs_sb_info *sbi)
4379 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
4380 struct free_segmap_info *free_i = FREE_I(sbi);
4381 unsigned int segno = 0, offset = 0, secno;
4382 block_t valid_blocks, usable_blks_in_seg;
4383 block_t blks_per_sec = BLKS_PER_SEC(sbi);
4386 /* find dirty segment based on free segmap */
4387 segno = find_next_inuse(free_i, MAIN_SEGS(sbi), offset);
4388 if (segno >= MAIN_SEGS(sbi))
4391 valid_blocks = get_valid_blocks(sbi, segno, false);
4392 usable_blks_in_seg = f2fs_usable_blks_in_seg(sbi, segno);
4393 if (valid_blocks == usable_blks_in_seg || !valid_blocks)
4395 if (valid_blocks > usable_blks_in_seg) {
4396 f2fs_bug_on(sbi, 1);
4399 mutex_lock(&dirty_i->seglist_lock);
4400 __locate_dirty_segment(sbi, segno, DIRTY);
4401 mutex_unlock(&dirty_i->seglist_lock);
4404 if (!__is_large_section(sbi))
4407 mutex_lock(&dirty_i->seglist_lock);
4408 for (segno = 0; segno < MAIN_SECS(sbi); segno += blks_per_sec) {
4409 valid_blocks = get_valid_blocks(sbi, segno, true);
4410 secno = GET_SEC_FROM_SEG(sbi, segno);
4412 if (!valid_blocks || valid_blocks == blks_per_sec)
4414 if (IS_CURSEC(sbi, secno))
4416 set_bit(secno, dirty_i->dirty_secmap);
4418 mutex_unlock(&dirty_i->seglist_lock);
4421 static int init_victim_secmap(struct f2fs_sb_info *sbi)
4423 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
4424 unsigned int bitmap_size = f2fs_bitmap_size(MAIN_SECS(sbi));
4426 dirty_i->victim_secmap = f2fs_kvzalloc(sbi, bitmap_size, GFP_KERNEL);
4427 if (!dirty_i->victim_secmap)
4432 static int build_dirty_segmap(struct f2fs_sb_info *sbi)
4434 struct dirty_seglist_info *dirty_i;
4435 unsigned int bitmap_size, i;
4437 /* allocate memory for dirty segments list information */
4438 dirty_i = f2fs_kzalloc(sbi, sizeof(struct dirty_seglist_info),
4443 SM_I(sbi)->dirty_info = dirty_i;
4444 mutex_init(&dirty_i->seglist_lock);
4446 bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi));
4448 for (i = 0; i < NR_DIRTY_TYPE; i++) {
4449 dirty_i->dirty_segmap[i] = f2fs_kvzalloc(sbi, bitmap_size,
4451 if (!dirty_i->dirty_segmap[i])
4455 if (__is_large_section(sbi)) {
4456 bitmap_size = f2fs_bitmap_size(MAIN_SECS(sbi));
4457 dirty_i->dirty_secmap = f2fs_kvzalloc(sbi,
4458 bitmap_size, GFP_KERNEL);
4459 if (!dirty_i->dirty_secmap)
4463 init_dirty_segmap(sbi);
4464 return init_victim_secmap(sbi);
4467 static int sanity_check_curseg(struct f2fs_sb_info *sbi)
4472 * In LFS/SSR curseg, .next_blkoff should point to an unused blkaddr;
4473 * In LFS curseg, all blkaddr after .next_blkoff should be unused.
4475 for (i = 0; i < NR_PERSISTENT_LOG; i++) {
4476 struct curseg_info *curseg = CURSEG_I(sbi, i);
4477 struct seg_entry *se = get_seg_entry(sbi, curseg->segno);
4478 unsigned int blkofs = curseg->next_blkoff;
4480 if (f2fs_test_bit(blkofs, se->cur_valid_map))
4483 if (curseg->alloc_type == SSR)
4486 for (blkofs += 1; blkofs < sbi->blocks_per_seg; blkofs++) {
4487 if (!f2fs_test_bit(blkofs, se->cur_valid_map))
4491 "Current segment's next free block offset is inconsistent with bitmap, logtype:%u, segno:%u, type:%u, next_blkoff:%u, blkofs:%u",
4492 i, curseg->segno, curseg->alloc_type,
4493 curseg->next_blkoff, blkofs);
4494 return -EFSCORRUPTED;
4500 #ifdef CONFIG_BLK_DEV_ZONED
4502 static int check_zone_write_pointer(struct f2fs_sb_info *sbi,
4503 struct f2fs_dev_info *fdev,
4504 struct blk_zone *zone)
4506 unsigned int wp_segno, wp_blkoff, zone_secno, zone_segno, segno;
4507 block_t zone_block, wp_block, last_valid_block;
4508 unsigned int log_sectors_per_block = sbi->log_blocksize - SECTOR_SHIFT;
4510 struct seg_entry *se;
4512 if (zone->type != BLK_ZONE_TYPE_SEQWRITE_REQ)
4515 wp_block = fdev->start_blk + (zone->wp >> log_sectors_per_block);
4516 wp_segno = GET_SEGNO(sbi, wp_block);
4517 wp_blkoff = wp_block - START_BLOCK(sbi, wp_segno);
4518 zone_block = fdev->start_blk + (zone->start >> log_sectors_per_block);
4519 zone_segno = GET_SEGNO(sbi, zone_block);
4520 zone_secno = GET_SEC_FROM_SEG(sbi, zone_segno);
4522 if (zone_segno >= MAIN_SEGS(sbi))
4526 * Skip check of zones cursegs point to, since
4527 * fix_curseg_write_pointer() checks them.
4529 for (i = 0; i < NO_CHECK_TYPE; i++)
4530 if (zone_secno == GET_SEC_FROM_SEG(sbi,
4531 CURSEG_I(sbi, i)->segno))
4535 * Get last valid block of the zone.
4537 last_valid_block = zone_block - 1;
4538 for (s = sbi->segs_per_sec - 1; s >= 0; s--) {
4539 segno = zone_segno + s;
4540 se = get_seg_entry(sbi, segno);
4541 for (b = sbi->blocks_per_seg - 1; b >= 0; b--)
4542 if (f2fs_test_bit(b, se->cur_valid_map)) {
4543 last_valid_block = START_BLOCK(sbi, segno) + b;
4546 if (last_valid_block >= zone_block)
4551 * If last valid block is beyond the write pointer, report the
4552 * inconsistency. This inconsistency does not cause write error
4553 * because the zone will not be selected for write operation until
4554 * it get discarded. Just report it.
4556 if (last_valid_block >= wp_block) {
4557 f2fs_notice(sbi, "Valid block beyond write pointer: "
4558 "valid block[0x%x,0x%x] wp[0x%x,0x%x]",
4559 GET_SEGNO(sbi, last_valid_block),
4560 GET_BLKOFF_FROM_SEG0(sbi, last_valid_block),
4561 wp_segno, wp_blkoff);
4566 * If there is no valid block in the zone and if write pointer is
4567 * not at zone start, reset the write pointer.
4569 if (last_valid_block + 1 == zone_block && zone->wp != zone->start) {
4571 "Zone without valid block has non-zero write "
4572 "pointer. Reset the write pointer: wp[0x%x,0x%x]",
4573 wp_segno, wp_blkoff);
4574 ret = __f2fs_issue_discard_zone(sbi, fdev->bdev, zone_block,
4575 zone->len >> log_sectors_per_block);
4577 f2fs_err(sbi, "Discard zone failed: %s (errno=%d)",
4586 static struct f2fs_dev_info *get_target_zoned_dev(struct f2fs_sb_info *sbi,
4587 block_t zone_blkaddr)
4591 for (i = 0; i < sbi->s_ndevs; i++) {
4592 if (!bdev_is_zoned(FDEV(i).bdev))
4594 if (sbi->s_ndevs == 1 || (FDEV(i).start_blk <= zone_blkaddr &&
4595 zone_blkaddr <= FDEV(i).end_blk))
4602 static int report_one_zone_cb(struct blk_zone *zone, unsigned int idx,
4604 memcpy(data, zone, sizeof(struct blk_zone));
4608 static int fix_curseg_write_pointer(struct f2fs_sb_info *sbi, int type)
4610 struct curseg_info *cs = CURSEG_I(sbi, type);
4611 struct f2fs_dev_info *zbd;
4612 struct blk_zone zone;
4613 unsigned int cs_section, wp_segno, wp_blkoff, wp_sector_off;
4614 block_t cs_zone_block, wp_block;
4615 unsigned int log_sectors_per_block = sbi->log_blocksize - SECTOR_SHIFT;
4616 sector_t zone_sector;
4619 cs_section = GET_SEC_FROM_SEG(sbi, cs->segno);
4620 cs_zone_block = START_BLOCK(sbi, GET_SEG_FROM_SEC(sbi, cs_section));
4622 zbd = get_target_zoned_dev(sbi, cs_zone_block);
4626 /* report zone for the sector the curseg points to */
4627 zone_sector = (sector_t)(cs_zone_block - zbd->start_blk)
4628 << log_sectors_per_block;
4629 err = blkdev_report_zones(zbd->bdev, zone_sector, 1,
4630 report_one_zone_cb, &zone);
4632 f2fs_err(sbi, "Report zone failed: %s errno=(%d)",
4637 if (zone.type != BLK_ZONE_TYPE_SEQWRITE_REQ)
4640 wp_block = zbd->start_blk + (zone.wp >> log_sectors_per_block);
4641 wp_segno = GET_SEGNO(sbi, wp_block);
4642 wp_blkoff = wp_block - START_BLOCK(sbi, wp_segno);
4643 wp_sector_off = zone.wp & GENMASK(log_sectors_per_block - 1, 0);
4645 if (cs->segno == wp_segno && cs->next_blkoff == wp_blkoff &&
4649 f2fs_notice(sbi, "Unaligned curseg[%d] with write pointer: "
4650 "curseg[0x%x,0x%x] wp[0x%x,0x%x]",
4651 type, cs->segno, cs->next_blkoff, wp_segno, wp_blkoff);
4653 f2fs_notice(sbi, "Assign new section to curseg[%d]: "
4654 "curseg[0x%x,0x%x]", type, cs->segno, cs->next_blkoff);
4655 allocate_segment_by_default(sbi, type, true);
4657 /* check consistency of the zone curseg pointed to */
4658 if (check_zone_write_pointer(sbi, zbd, &zone))
4661 /* check newly assigned zone */
4662 cs_section = GET_SEC_FROM_SEG(sbi, cs->segno);
4663 cs_zone_block = START_BLOCK(sbi, GET_SEG_FROM_SEC(sbi, cs_section));
4665 zbd = get_target_zoned_dev(sbi, cs_zone_block);
4669 zone_sector = (sector_t)(cs_zone_block - zbd->start_blk)
4670 << log_sectors_per_block;
4671 err = blkdev_report_zones(zbd->bdev, zone_sector, 1,
4672 report_one_zone_cb, &zone);
4674 f2fs_err(sbi, "Report zone failed: %s errno=(%d)",
4679 if (zone.type != BLK_ZONE_TYPE_SEQWRITE_REQ)
4682 if (zone.wp != zone.start) {
4684 "New zone for curseg[%d] is not yet discarded. "
4685 "Reset the zone: curseg[0x%x,0x%x]",
4686 type, cs->segno, cs->next_blkoff);
4687 err = __f2fs_issue_discard_zone(sbi, zbd->bdev,
4688 zone_sector >> log_sectors_per_block,
4689 zone.len >> log_sectors_per_block);
4691 f2fs_err(sbi, "Discard zone failed: %s (errno=%d)",
4700 int f2fs_fix_curseg_write_pointer(struct f2fs_sb_info *sbi)
4704 for (i = 0; i < NR_PERSISTENT_LOG; i++) {
4705 ret = fix_curseg_write_pointer(sbi, i);
4713 struct check_zone_write_pointer_args {
4714 struct f2fs_sb_info *sbi;
4715 struct f2fs_dev_info *fdev;
4718 static int check_zone_write_pointer_cb(struct blk_zone *zone, unsigned int idx,
4720 struct check_zone_write_pointer_args *args;
4721 args = (struct check_zone_write_pointer_args *)data;
4723 return check_zone_write_pointer(args->sbi, args->fdev, zone);
4726 int f2fs_check_write_pointer(struct f2fs_sb_info *sbi)
4729 struct check_zone_write_pointer_args args;
4731 for (i = 0; i < sbi->s_ndevs; i++) {
4732 if (!bdev_is_zoned(FDEV(i).bdev))
4736 args.fdev = &FDEV(i);
4737 ret = blkdev_report_zones(FDEV(i).bdev, 0, BLK_ALL_ZONES,
4738 check_zone_write_pointer_cb, &args);
4746 static bool is_conv_zone(struct f2fs_sb_info *sbi, unsigned int zone_idx,
4747 unsigned int dev_idx)
4749 if (!bdev_is_zoned(FDEV(dev_idx).bdev))
4751 return !test_bit(zone_idx, FDEV(dev_idx).blkz_seq);
4754 /* Return the zone index in the given device */
4755 static unsigned int get_zone_idx(struct f2fs_sb_info *sbi, unsigned int secno,
4758 block_t sec_start_blkaddr = START_BLOCK(sbi, GET_SEG_FROM_SEC(sbi, secno));
4760 return (sec_start_blkaddr - FDEV(dev_idx).start_blk) >>
4761 sbi->log_blocks_per_blkz;
4765 * Return the usable segments in a section based on the zone's
4766 * corresponding zone capacity. Zone is equal to a section.
4768 static inline unsigned int f2fs_usable_zone_segs_in_sec(
4769 struct f2fs_sb_info *sbi, unsigned int segno)
4771 unsigned int dev_idx, zone_idx, unusable_segs_in_sec;
4773 dev_idx = f2fs_target_device_index(sbi, START_BLOCK(sbi, segno));
4774 zone_idx = get_zone_idx(sbi, GET_SEC_FROM_SEG(sbi, segno), dev_idx);
4776 /* Conventional zone's capacity is always equal to zone size */
4777 if (is_conv_zone(sbi, zone_idx, dev_idx))
4778 return sbi->segs_per_sec;
4781 * If the zone_capacity_blocks array is NULL, then zone capacity
4782 * is equal to the zone size for all zones
4784 if (!FDEV(dev_idx).zone_capacity_blocks)
4785 return sbi->segs_per_sec;
4787 /* Get the segment count beyond zone capacity block */
4788 unusable_segs_in_sec = (sbi->blocks_per_blkz -
4789 FDEV(dev_idx).zone_capacity_blocks[zone_idx]) >>
4790 sbi->log_blocks_per_seg;
4791 return sbi->segs_per_sec - unusable_segs_in_sec;
4795 * Return the number of usable blocks in a segment. The number of blocks
4796 * returned is always equal to the number of blocks in a segment for
4797 * segments fully contained within a sequential zone capacity or a
4798 * conventional zone. For segments partially contained in a sequential
4799 * zone capacity, the number of usable blocks up to the zone capacity
4800 * is returned. 0 is returned in all other cases.
4802 static inline unsigned int f2fs_usable_zone_blks_in_seg(
4803 struct f2fs_sb_info *sbi, unsigned int segno)
4805 block_t seg_start, sec_start_blkaddr, sec_cap_blkaddr;
4806 unsigned int zone_idx, dev_idx, secno;
4808 secno = GET_SEC_FROM_SEG(sbi, segno);
4809 seg_start = START_BLOCK(sbi, segno);
4810 dev_idx = f2fs_target_device_index(sbi, seg_start);
4811 zone_idx = get_zone_idx(sbi, secno, dev_idx);
4814 * Conventional zone's capacity is always equal to zone size,
4815 * so, blocks per segment is unchanged.
4817 if (is_conv_zone(sbi, zone_idx, dev_idx))
4818 return sbi->blocks_per_seg;
4820 if (!FDEV(dev_idx).zone_capacity_blocks)
4821 return sbi->blocks_per_seg;
4823 sec_start_blkaddr = START_BLOCK(sbi, GET_SEG_FROM_SEC(sbi, secno));
4824 sec_cap_blkaddr = sec_start_blkaddr +
4825 FDEV(dev_idx).zone_capacity_blocks[zone_idx];
4828 * If segment starts before zone capacity and spans beyond
4829 * zone capacity, then usable blocks are from seg start to
4830 * zone capacity. If the segment starts after the zone capacity,
4831 * then there are no usable blocks.
4833 if (seg_start >= sec_cap_blkaddr)
4835 if (seg_start + sbi->blocks_per_seg > sec_cap_blkaddr)
4836 return sec_cap_blkaddr - seg_start;
4838 return sbi->blocks_per_seg;
4841 int f2fs_fix_curseg_write_pointer(struct f2fs_sb_info *sbi)
4846 int f2fs_check_write_pointer(struct f2fs_sb_info *sbi)
4851 static inline unsigned int f2fs_usable_zone_blks_in_seg(struct f2fs_sb_info *sbi,
4857 static inline unsigned int f2fs_usable_zone_segs_in_sec(struct f2fs_sb_info *sbi,
4863 unsigned int f2fs_usable_blks_in_seg(struct f2fs_sb_info *sbi,
4866 if (f2fs_sb_has_blkzoned(sbi))
4867 return f2fs_usable_zone_blks_in_seg(sbi, segno);
4869 return sbi->blocks_per_seg;
4872 unsigned int f2fs_usable_segs_in_sec(struct f2fs_sb_info *sbi,
4875 if (f2fs_sb_has_blkzoned(sbi))
4876 return f2fs_usable_zone_segs_in_sec(sbi, segno);
4878 return sbi->segs_per_sec;
4882 * Update min, max modified time for cost-benefit GC algorithm
4884 static void init_min_max_mtime(struct f2fs_sb_info *sbi)
4886 struct sit_info *sit_i = SIT_I(sbi);
4889 down_write(&sit_i->sentry_lock);
4891 sit_i->min_mtime = ULLONG_MAX;
4893 for (segno = 0; segno < MAIN_SEGS(sbi); segno += sbi->segs_per_sec) {
4895 unsigned long long mtime = 0;
4897 for (i = 0; i < sbi->segs_per_sec; i++)
4898 mtime += get_seg_entry(sbi, segno + i)->mtime;
4900 mtime = div_u64(mtime, sbi->segs_per_sec);
4902 if (sit_i->min_mtime > mtime)
4903 sit_i->min_mtime = mtime;
4905 sit_i->max_mtime = get_mtime(sbi, false);
4906 up_write(&sit_i->sentry_lock);
4909 int f2fs_build_segment_manager(struct f2fs_sb_info *sbi)
4911 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
4912 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
4913 struct f2fs_sm_info *sm_info;
4916 sm_info = f2fs_kzalloc(sbi, sizeof(struct f2fs_sm_info), GFP_KERNEL);
4921 sbi->sm_info = sm_info;
4922 sm_info->seg0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr);
4923 sm_info->main_blkaddr = le32_to_cpu(raw_super->main_blkaddr);
4924 sm_info->segment_count = le32_to_cpu(raw_super->segment_count);
4925 sm_info->reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count);
4926 sm_info->ovp_segments = le32_to_cpu(ckpt->overprov_segment_count);
4927 sm_info->main_segments = le32_to_cpu(raw_super->segment_count_main);
4928 sm_info->ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr);
4929 sm_info->rec_prefree_segments = sm_info->main_segments *
4930 DEF_RECLAIM_PREFREE_SEGMENTS / 100;
4931 if (sm_info->rec_prefree_segments > DEF_MAX_RECLAIM_PREFREE_SEGMENTS)
4932 sm_info->rec_prefree_segments = DEF_MAX_RECLAIM_PREFREE_SEGMENTS;
4934 if (!f2fs_lfs_mode(sbi))
4935 sm_info->ipu_policy = 1 << F2FS_IPU_FSYNC;
4936 sm_info->min_ipu_util = DEF_MIN_IPU_UTIL;
4937 sm_info->min_fsync_blocks = DEF_MIN_FSYNC_BLOCKS;
4938 sm_info->min_seq_blocks = sbi->blocks_per_seg * sbi->segs_per_sec;
4939 sm_info->min_hot_blocks = DEF_MIN_HOT_BLOCKS;
4940 sm_info->min_ssr_sections = reserved_sections(sbi);
4942 INIT_LIST_HEAD(&sm_info->sit_entry_set);
4944 init_rwsem(&sm_info->curseg_lock);
4946 if (!f2fs_readonly(sbi->sb)) {
4947 err = f2fs_create_flush_cmd_control(sbi);
4952 err = create_discard_cmd_control(sbi);
4956 err = build_sit_info(sbi);
4959 err = build_free_segmap(sbi);
4962 err = build_curseg(sbi);
4966 /* reinit free segmap based on SIT */
4967 err = build_sit_entries(sbi);
4971 init_free_segmap(sbi);
4972 err = build_dirty_segmap(sbi);
4976 err = sanity_check_curseg(sbi);
4980 init_min_max_mtime(sbi);
4984 static void discard_dirty_segmap(struct f2fs_sb_info *sbi,
4985 enum dirty_type dirty_type)
4987 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
4989 mutex_lock(&dirty_i->seglist_lock);
4990 kvfree(dirty_i->dirty_segmap[dirty_type]);
4991 dirty_i->nr_dirty[dirty_type] = 0;
4992 mutex_unlock(&dirty_i->seglist_lock);
4995 static void destroy_victim_secmap(struct f2fs_sb_info *sbi)
4997 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
4998 kvfree(dirty_i->victim_secmap);
5001 static void destroy_dirty_segmap(struct f2fs_sb_info *sbi)
5003 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
5009 /* discard pre-free/dirty segments list */
5010 for (i = 0; i < NR_DIRTY_TYPE; i++)
5011 discard_dirty_segmap(sbi, i);
5013 if (__is_large_section(sbi)) {
5014 mutex_lock(&dirty_i->seglist_lock);
5015 kvfree(dirty_i->dirty_secmap);
5016 mutex_unlock(&dirty_i->seglist_lock);
5019 destroy_victim_secmap(sbi);
5020 SM_I(sbi)->dirty_info = NULL;
5024 static void destroy_curseg(struct f2fs_sb_info *sbi)
5026 struct curseg_info *array = SM_I(sbi)->curseg_array;
5031 SM_I(sbi)->curseg_array = NULL;
5032 for (i = 0; i < NR_CURSEG_TYPE; i++) {
5033 kvfree(array[i].sum_blk);
5034 kvfree(array[i].journal);
5039 static void destroy_free_segmap(struct f2fs_sb_info *sbi)
5041 struct free_segmap_info *free_i = SM_I(sbi)->free_info;
5044 SM_I(sbi)->free_info = NULL;
5045 kvfree(free_i->free_segmap);
5046 kvfree(free_i->free_secmap);
5050 static void destroy_sit_info(struct f2fs_sb_info *sbi)
5052 struct sit_info *sit_i = SIT_I(sbi);
5057 if (sit_i->sentries)
5058 kvfree(sit_i->bitmap);
5059 kvfree(sit_i->tmp_map);
5061 kvfree(sit_i->sentries);
5062 kvfree(sit_i->sec_entries);
5063 kvfree(sit_i->dirty_sentries_bitmap);
5065 SM_I(sbi)->sit_info = NULL;
5066 kvfree(sit_i->sit_bitmap);
5067 #ifdef CONFIG_F2FS_CHECK_FS
5068 kvfree(sit_i->sit_bitmap_mir);
5069 kvfree(sit_i->invalid_segmap);
5074 void f2fs_destroy_segment_manager(struct f2fs_sb_info *sbi)
5076 struct f2fs_sm_info *sm_info = SM_I(sbi);
5080 f2fs_destroy_flush_cmd_control(sbi, true);
5081 destroy_discard_cmd_control(sbi);
5082 destroy_dirty_segmap(sbi);
5083 destroy_curseg(sbi);
5084 destroy_free_segmap(sbi);
5085 destroy_sit_info(sbi);
5086 sbi->sm_info = NULL;
5090 int __init f2fs_create_segment_manager_caches(void)
5092 discard_entry_slab = f2fs_kmem_cache_create("f2fs_discard_entry",
5093 sizeof(struct discard_entry));
5094 if (!discard_entry_slab)
5097 discard_cmd_slab = f2fs_kmem_cache_create("f2fs_discard_cmd",
5098 sizeof(struct discard_cmd));
5099 if (!discard_cmd_slab)
5100 goto destroy_discard_entry;
5102 sit_entry_set_slab = f2fs_kmem_cache_create("f2fs_sit_entry_set",
5103 sizeof(struct sit_entry_set));
5104 if (!sit_entry_set_slab)
5105 goto destroy_discard_cmd;
5107 inmem_entry_slab = f2fs_kmem_cache_create("f2fs_inmem_page_entry",
5108 sizeof(struct inmem_pages));
5109 if (!inmem_entry_slab)
5110 goto destroy_sit_entry_set;
5113 destroy_sit_entry_set:
5114 kmem_cache_destroy(sit_entry_set_slab);
5115 destroy_discard_cmd:
5116 kmem_cache_destroy(discard_cmd_slab);
5117 destroy_discard_entry:
5118 kmem_cache_destroy(discard_entry_slab);
5123 void f2fs_destroy_segment_manager_caches(void)
5125 kmem_cache_destroy(sit_entry_set_slab);
5126 kmem_cache_destroy(discard_cmd_slab);
5127 kmem_cache_destroy(discard_entry_slab);
5128 kmem_cache_destroy(inmem_entry_slab);