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 (test_opt(sbi
, LFS
))
177 if (sbi
->gc_mode
== GC_URGENT
)
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 f2fs_sb_info
*sbi
= F2FS_I_SB(inode
);
189 struct f2fs_inode_info
*fi
= F2FS_I(inode
);
190 struct inmem_pages
*new;
192 f2fs_trace_pid(page
);
194 f2fs_set_page_private(page
, (unsigned long)ATOMIC_WRITTEN_PAGE
);
196 new = f2fs_kmem_cache_alloc(inmem_entry_slab
, GFP_NOFS
);
198 /* add atomic page indices to the list */
200 INIT_LIST_HEAD(&new->list
);
202 /* increase reference count with clean state */
203 mutex_lock(&fi
->inmem_lock
);
205 list_add_tail(&new->list
, &fi
->inmem_pages
);
206 spin_lock(&sbi
->inode_lock
[ATOMIC_FILE
]);
207 if (list_empty(&fi
->inmem_ilist
))
208 list_add_tail(&fi
->inmem_ilist
, &sbi
->inode_list
[ATOMIC_FILE
]);
209 spin_unlock(&sbi
->inode_lock
[ATOMIC_FILE
]);
210 inc_page_count(F2FS_I_SB(inode
), F2FS_INMEM_PAGES
);
211 mutex_unlock(&fi
->inmem_lock
);
213 trace_f2fs_register_inmem_page(page
, INMEM
);
216 static int __revoke_inmem_pages(struct inode
*inode
,
217 struct list_head
*head
, bool drop
, bool recover
,
220 struct f2fs_sb_info
*sbi
= F2FS_I_SB(inode
);
221 struct inmem_pages
*cur
, *tmp
;
224 list_for_each_entry_safe(cur
, tmp
, head
, list
) {
225 struct page
*page
= cur
->page
;
228 trace_f2fs_commit_inmem_page(page
, INMEM_DROP
);
232 * to avoid deadlock in between page lock and
235 if (!trylock_page(page
))
241 f2fs_wait_on_page_writeback(page
, DATA
, true, true);
244 struct dnode_of_data dn
;
247 trace_f2fs_commit_inmem_page(page
, INMEM_REVOKE
);
249 set_new_dnode(&dn
, inode
, NULL
, NULL
, 0);
250 err
= f2fs_get_dnode_of_data(&dn
, page
->index
,
253 if (err
== -ENOMEM
) {
254 congestion_wait(BLK_RW_ASYNC
, HZ
/50);
262 err
= f2fs_get_node_info(sbi
, dn
.nid
, &ni
);
268 if (cur
->old_addr
== NEW_ADDR
) {
269 f2fs_invalidate_blocks(sbi
, dn
.data_blkaddr
);
270 f2fs_update_data_blkaddr(&dn
, NEW_ADDR
);
272 f2fs_replace_block(sbi
, &dn
, dn
.data_blkaddr
,
273 cur
->old_addr
, ni
.version
, true, true);
277 /* we don't need to invalidate this in the sccessful status */
278 if (drop
|| recover
) {
279 ClearPageUptodate(page
);
280 clear_cold_data(page
);
282 f2fs_clear_page_private(page
);
283 f2fs_put_page(page
, 1);
285 list_del(&cur
->list
);
286 kmem_cache_free(inmem_entry_slab
, cur
);
287 dec_page_count(F2FS_I_SB(inode
), F2FS_INMEM_PAGES
);
292 void f2fs_drop_inmem_pages_all(struct f2fs_sb_info
*sbi
, bool gc_failure
)
294 struct list_head
*head
= &sbi
->inode_list
[ATOMIC_FILE
];
296 struct f2fs_inode_info
*fi
;
298 spin_lock(&sbi
->inode_lock
[ATOMIC_FILE
]);
299 if (list_empty(head
)) {
300 spin_unlock(&sbi
->inode_lock
[ATOMIC_FILE
]);
303 fi
= list_first_entry(head
, struct f2fs_inode_info
, inmem_ilist
);
304 inode
= igrab(&fi
->vfs_inode
);
305 spin_unlock(&sbi
->inode_lock
[ATOMIC_FILE
]);
309 if (fi
->i_gc_failures
[GC_FAILURE_ATOMIC
])
314 set_inode_flag(inode
, FI_ATOMIC_REVOKE_REQUEST
);
315 f2fs_drop_inmem_pages(inode
);
319 congestion_wait(BLK_RW_ASYNC
, HZ
/50);
324 void f2fs_drop_inmem_pages(struct inode
*inode
)
326 struct f2fs_sb_info
*sbi
= F2FS_I_SB(inode
);
327 struct f2fs_inode_info
*fi
= F2FS_I(inode
);
329 while (!list_empty(&fi
->inmem_pages
)) {
330 mutex_lock(&fi
->inmem_lock
);
331 __revoke_inmem_pages(inode
, &fi
->inmem_pages
,
334 if (list_empty(&fi
->inmem_pages
)) {
335 spin_lock(&sbi
->inode_lock
[ATOMIC_FILE
]);
336 if (!list_empty(&fi
->inmem_ilist
))
337 list_del_init(&fi
->inmem_ilist
);
338 spin_unlock(&sbi
->inode_lock
[ATOMIC_FILE
]);
340 mutex_unlock(&fi
->inmem_lock
);
343 clear_inode_flag(inode
, FI_ATOMIC_FILE
);
344 fi
->i_gc_failures
[GC_FAILURE_ATOMIC
] = 0;
345 stat_dec_atomic_write(inode
);
348 void f2fs_drop_inmem_page(struct inode
*inode
, struct page
*page
)
350 struct f2fs_inode_info
*fi
= F2FS_I(inode
);
351 struct f2fs_sb_info
*sbi
= F2FS_I_SB(inode
);
352 struct list_head
*head
= &fi
->inmem_pages
;
353 struct inmem_pages
*cur
= NULL
;
355 f2fs_bug_on(sbi
, !IS_ATOMIC_WRITTEN_PAGE(page
));
357 mutex_lock(&fi
->inmem_lock
);
358 list_for_each_entry(cur
, head
, list
) {
359 if (cur
->page
== page
)
363 f2fs_bug_on(sbi
, list_empty(head
) || cur
->page
!= page
);
364 list_del(&cur
->list
);
365 mutex_unlock(&fi
->inmem_lock
);
367 dec_page_count(sbi
, F2FS_INMEM_PAGES
);
368 kmem_cache_free(inmem_entry_slab
, cur
);
370 ClearPageUptodate(page
);
371 f2fs_clear_page_private(page
);
372 f2fs_put_page(page
, 0);
374 trace_f2fs_commit_inmem_page(page
, INMEM_INVALIDATE
);
377 static int __f2fs_commit_inmem_pages(struct inode
*inode
)
379 struct f2fs_sb_info
*sbi
= F2FS_I_SB(inode
);
380 struct f2fs_inode_info
*fi
= F2FS_I(inode
);
381 struct inmem_pages
*cur
, *tmp
;
382 struct f2fs_io_info fio
= {
387 .op_flags
= REQ_SYNC
| REQ_PRIO
,
388 .io_type
= FS_DATA_IO
,
390 struct list_head revoke_list
;
391 bool submit_bio
= false;
394 INIT_LIST_HEAD(&revoke_list
);
396 list_for_each_entry_safe(cur
, tmp
, &fi
->inmem_pages
, list
) {
397 struct page
*page
= cur
->page
;
400 if (page
->mapping
== inode
->i_mapping
) {
401 trace_f2fs_commit_inmem_page(page
, INMEM
);
403 f2fs_wait_on_page_writeback(page
, DATA
, true, true);
405 set_page_dirty(page
);
406 if (clear_page_dirty_for_io(page
)) {
407 inode_dec_dirty_pages(inode
);
408 f2fs_remove_dirty_inode(inode
);
412 fio
.old_blkaddr
= NULL_ADDR
;
413 fio
.encrypted_page
= NULL
;
414 fio
.need_lock
= LOCK_DONE
;
415 err
= f2fs_do_write_data_page(&fio
);
417 if (err
== -ENOMEM
) {
418 congestion_wait(BLK_RW_ASYNC
, HZ
/50);
425 /* record old blkaddr for revoking */
426 cur
->old_addr
= fio
.old_blkaddr
;
430 list_move_tail(&cur
->list
, &revoke_list
);
434 f2fs_submit_merged_write_cond(sbi
, inode
, NULL
, 0, DATA
);
438 * try to revoke all committed pages, but still we could fail
439 * due to no memory or other reason, if that happened, EAGAIN
440 * will be returned, which means in such case, transaction is
441 * already not integrity, caller should use journal to do the
442 * recovery or rewrite & commit last transaction. For other
443 * error number, revoking was done by filesystem itself.
445 err
= __revoke_inmem_pages(inode
, &revoke_list
,
448 /* drop all uncommitted pages */
449 __revoke_inmem_pages(inode
, &fi
->inmem_pages
,
452 __revoke_inmem_pages(inode
, &revoke_list
,
453 false, false, false);
459 int f2fs_commit_inmem_pages(struct inode
*inode
)
461 struct f2fs_sb_info
*sbi
= F2FS_I_SB(inode
);
462 struct f2fs_inode_info
*fi
= F2FS_I(inode
);
465 f2fs_balance_fs(sbi
, true);
467 down_write(&fi
->i_gc_rwsem
[WRITE
]);
470 set_inode_flag(inode
, FI_ATOMIC_COMMIT
);
472 mutex_lock(&fi
->inmem_lock
);
473 err
= __f2fs_commit_inmem_pages(inode
);
475 spin_lock(&sbi
->inode_lock
[ATOMIC_FILE
]);
476 if (!list_empty(&fi
->inmem_ilist
))
477 list_del_init(&fi
->inmem_ilist
);
478 spin_unlock(&sbi
->inode_lock
[ATOMIC_FILE
]);
479 mutex_unlock(&fi
->inmem_lock
);
481 clear_inode_flag(inode
, FI_ATOMIC_COMMIT
);
484 up_write(&fi
->i_gc_rwsem
[WRITE
]);
490 * This function balances dirty node and dentry pages.
491 * In addition, it controls garbage collection.
493 void f2fs_balance_fs(struct f2fs_sb_info
*sbi
, bool need
)
495 if (time_to_inject(sbi
, FAULT_CHECKPOINT
)) {
496 f2fs_show_injection_info(FAULT_CHECKPOINT
);
497 f2fs_stop_checkpoint(sbi
, false);
500 /* balance_fs_bg is able to be pending */
501 if (need
&& excess_cached_nats(sbi
))
502 f2fs_balance_fs_bg(sbi
);
504 if (f2fs_is_checkpoint_ready(sbi
))
508 * We should do GC or end up with checkpoint, if there are so many dirty
509 * dir/node pages without enough free segments.
511 if (has_not_enough_free_secs(sbi
, 0, 0)) {
512 mutex_lock(&sbi
->gc_mutex
);
513 f2fs_gc(sbi
, false, false, NULL_SEGNO
);
517 void f2fs_balance_fs_bg(struct f2fs_sb_info
*sbi
)
519 if (unlikely(is_sbi_flag_set(sbi
, SBI_POR_DOING
)))
522 /* try to shrink extent cache when there is no enough memory */
523 if (!f2fs_available_free_memory(sbi
, EXTENT_CACHE
))
524 f2fs_shrink_extent_tree(sbi
, EXTENT_CACHE_SHRINK_NUMBER
);
526 /* check the # of cached NAT entries */
527 if (!f2fs_available_free_memory(sbi
, NAT_ENTRIES
))
528 f2fs_try_to_free_nats(sbi
, NAT_ENTRY_PER_BLOCK
);
530 if (!f2fs_available_free_memory(sbi
, FREE_NIDS
))
531 f2fs_try_to_free_nids(sbi
, MAX_FREE_NIDS
);
533 f2fs_build_free_nids(sbi
, false, false);
535 if (!is_idle(sbi
, REQ_TIME
) &&
536 (!excess_dirty_nats(sbi
) && !excess_dirty_nodes(sbi
)))
539 /* checkpoint is the only way to shrink partial cached entries */
540 if (!f2fs_available_free_memory(sbi
, NAT_ENTRIES
) ||
541 !f2fs_available_free_memory(sbi
, INO_ENTRIES
) ||
542 excess_prefree_segs(sbi
) ||
543 excess_dirty_nats(sbi
) ||
544 excess_dirty_nodes(sbi
) ||
545 f2fs_time_over(sbi
, CP_TIME
)) {
546 if (test_opt(sbi
, DATA_FLUSH
)) {
547 struct blk_plug plug
;
549 mutex_lock(&sbi
->flush_lock
);
551 blk_start_plug(&plug
);
552 f2fs_sync_dirty_inodes(sbi
, FILE_INODE
);
553 blk_finish_plug(&plug
);
555 mutex_unlock(&sbi
->flush_lock
);
557 f2fs_sync_fs(sbi
->sb
, true);
558 stat_inc_bg_cp_count(sbi
->stat_info
);
562 static int __submit_flush_wait(struct f2fs_sb_info
*sbi
,
563 struct block_device
*bdev
)
568 bio
= f2fs_bio_alloc(sbi
, 0, false);
572 bio
->bi_opf
= REQ_OP_WRITE
| REQ_SYNC
| REQ_PREFLUSH
;
573 bio_set_dev(bio
, bdev
);
574 ret
= submit_bio_wait(bio
);
577 trace_f2fs_issue_flush(bdev
, test_opt(sbi
, NOBARRIER
),
578 test_opt(sbi
, FLUSH_MERGE
), ret
);
582 static int submit_flush_wait(struct f2fs_sb_info
*sbi
, nid_t ino
)
587 if (!f2fs_is_multi_device(sbi
))
588 return __submit_flush_wait(sbi
, sbi
->sb
->s_bdev
);
590 for (i
= 0; i
< sbi
->s_ndevs
; i
++) {
591 if (!f2fs_is_dirty_device(sbi
, ino
, i
, FLUSH_INO
))
593 ret
= __submit_flush_wait(sbi
, FDEV(i
).bdev
);
600 static int issue_flush_thread(void *data
)
602 struct f2fs_sb_info
*sbi
= data
;
603 struct flush_cmd_control
*fcc
= SM_I(sbi
)->fcc_info
;
604 wait_queue_head_t
*q
= &fcc
->flush_wait_queue
;
606 if (kthread_should_stop())
609 sb_start_intwrite(sbi
->sb
);
611 if (!llist_empty(&fcc
->issue_list
)) {
612 struct flush_cmd
*cmd
, *next
;
615 fcc
->dispatch_list
= llist_del_all(&fcc
->issue_list
);
616 fcc
->dispatch_list
= llist_reverse_order(fcc
->dispatch_list
);
618 cmd
= llist_entry(fcc
->dispatch_list
, struct flush_cmd
, llnode
);
620 ret
= submit_flush_wait(sbi
, cmd
->ino
);
621 atomic_inc(&fcc
->issued_flush
);
623 llist_for_each_entry_safe(cmd
, next
,
624 fcc
->dispatch_list
, llnode
) {
626 complete(&cmd
->wait
);
628 fcc
->dispatch_list
= NULL
;
631 sb_end_intwrite(sbi
->sb
);
633 wait_event_interruptible(*q
,
634 kthread_should_stop() || !llist_empty(&fcc
->issue_list
));
638 int f2fs_issue_flush(struct f2fs_sb_info
*sbi
, nid_t ino
)
640 struct flush_cmd_control
*fcc
= SM_I(sbi
)->fcc_info
;
641 struct flush_cmd cmd
;
644 if (test_opt(sbi
, NOBARRIER
))
647 if (!test_opt(sbi
, FLUSH_MERGE
)) {
648 atomic_inc(&fcc
->queued_flush
);
649 ret
= submit_flush_wait(sbi
, ino
);
650 atomic_dec(&fcc
->queued_flush
);
651 atomic_inc(&fcc
->issued_flush
);
655 if (atomic_inc_return(&fcc
->queued_flush
) == 1 ||
656 f2fs_is_multi_device(sbi
)) {
657 ret
= submit_flush_wait(sbi
, ino
);
658 atomic_dec(&fcc
->queued_flush
);
660 atomic_inc(&fcc
->issued_flush
);
665 init_completion(&cmd
.wait
);
667 llist_add(&cmd
.llnode
, &fcc
->issue_list
);
669 /* update issue_list before we wake up issue_flush thread */
672 if (waitqueue_active(&fcc
->flush_wait_queue
))
673 wake_up(&fcc
->flush_wait_queue
);
675 if (fcc
->f2fs_issue_flush
) {
676 wait_for_completion(&cmd
.wait
);
677 atomic_dec(&fcc
->queued_flush
);
679 struct llist_node
*list
;
681 list
= llist_del_all(&fcc
->issue_list
);
683 wait_for_completion(&cmd
.wait
);
684 atomic_dec(&fcc
->queued_flush
);
686 struct flush_cmd
*tmp
, *next
;
688 ret
= submit_flush_wait(sbi
, ino
);
690 llist_for_each_entry_safe(tmp
, next
, list
, llnode
) {
693 atomic_dec(&fcc
->queued_flush
);
697 complete(&tmp
->wait
);
705 int f2fs_create_flush_cmd_control(struct f2fs_sb_info
*sbi
)
707 dev_t dev
= sbi
->sb
->s_bdev
->bd_dev
;
708 struct flush_cmd_control
*fcc
;
711 if (SM_I(sbi
)->fcc_info
) {
712 fcc
= SM_I(sbi
)->fcc_info
;
713 if (fcc
->f2fs_issue_flush
)
718 fcc
= f2fs_kzalloc(sbi
, sizeof(struct flush_cmd_control
), GFP_KERNEL
);
721 atomic_set(&fcc
->issued_flush
, 0);
722 atomic_set(&fcc
->queued_flush
, 0);
723 init_waitqueue_head(&fcc
->flush_wait_queue
);
724 init_llist_head(&fcc
->issue_list
);
725 SM_I(sbi
)->fcc_info
= fcc
;
726 if (!test_opt(sbi
, FLUSH_MERGE
))
730 fcc
->f2fs_issue_flush
= kthread_run(issue_flush_thread
, sbi
,
731 "f2fs_flush-%u:%u", MAJOR(dev
), MINOR(dev
));
732 if (IS_ERR(fcc
->f2fs_issue_flush
)) {
733 err
= PTR_ERR(fcc
->f2fs_issue_flush
);
735 SM_I(sbi
)->fcc_info
= NULL
;
742 void f2fs_destroy_flush_cmd_control(struct f2fs_sb_info
*sbi
, bool free
)
744 struct flush_cmd_control
*fcc
= SM_I(sbi
)->fcc_info
;
746 if (fcc
&& fcc
->f2fs_issue_flush
) {
747 struct task_struct
*flush_thread
= fcc
->f2fs_issue_flush
;
749 fcc
->f2fs_issue_flush
= NULL
;
750 kthread_stop(flush_thread
);
754 SM_I(sbi
)->fcc_info
= NULL
;
758 int f2fs_flush_device_cache(struct f2fs_sb_info
*sbi
)
762 if (!f2fs_is_multi_device(sbi
))
765 for (i
= 1; i
< sbi
->s_ndevs
; i
++) {
766 if (!f2fs_test_bit(i
, (char *)&sbi
->dirty_device
))
768 ret
= __submit_flush_wait(sbi
, FDEV(i
).bdev
);
772 spin_lock(&sbi
->dev_lock
);
773 f2fs_clear_bit(i
, (char *)&sbi
->dirty_device
);
774 spin_unlock(&sbi
->dev_lock
);
780 static void __locate_dirty_segment(struct f2fs_sb_info
*sbi
, unsigned int segno
,
781 enum dirty_type dirty_type
)
783 struct dirty_seglist_info
*dirty_i
= DIRTY_I(sbi
);
785 /* need not be added */
786 if (IS_CURSEG(sbi
, segno
))
789 if (!test_and_set_bit(segno
, dirty_i
->dirty_segmap
[dirty_type
]))
790 dirty_i
->nr_dirty
[dirty_type
]++;
792 if (dirty_type
== DIRTY
) {
793 struct seg_entry
*sentry
= get_seg_entry(sbi
, segno
);
794 enum dirty_type t
= sentry
->type
;
796 if (unlikely(t
>= DIRTY
)) {
800 if (!test_and_set_bit(segno
, dirty_i
->dirty_segmap
[t
]))
801 dirty_i
->nr_dirty
[t
]++;
805 static void __remove_dirty_segment(struct f2fs_sb_info
*sbi
, unsigned int segno
,
806 enum dirty_type dirty_type
)
808 struct dirty_seglist_info
*dirty_i
= DIRTY_I(sbi
);
810 if (test_and_clear_bit(segno
, dirty_i
->dirty_segmap
[dirty_type
]))
811 dirty_i
->nr_dirty
[dirty_type
]--;
813 if (dirty_type
== DIRTY
) {
814 struct seg_entry
*sentry
= get_seg_entry(sbi
, segno
);
815 enum dirty_type t
= sentry
->type
;
817 if (test_and_clear_bit(segno
, dirty_i
->dirty_segmap
[t
]))
818 dirty_i
->nr_dirty
[t
]--;
820 if (get_valid_blocks(sbi
, segno
, true) == 0)
821 clear_bit(GET_SEC_FROM_SEG(sbi
, segno
),
822 dirty_i
->victim_secmap
);
827 * Should not occur error such as -ENOMEM.
828 * Adding dirty entry into seglist is not critical operation.
829 * If a given segment is one of current working segments, it won't be added.
831 static void locate_dirty_segment(struct f2fs_sb_info
*sbi
, unsigned int segno
)
833 struct dirty_seglist_info
*dirty_i
= DIRTY_I(sbi
);
834 unsigned short valid_blocks
, ckpt_valid_blocks
;
836 if (segno
== NULL_SEGNO
|| IS_CURSEG(sbi
, segno
))
839 mutex_lock(&dirty_i
->seglist_lock
);
841 valid_blocks
= get_valid_blocks(sbi
, segno
, false);
842 ckpt_valid_blocks
= get_ckpt_valid_blocks(sbi
, segno
);
844 if (valid_blocks
== 0 && (!is_sbi_flag_set(sbi
, SBI_CP_DISABLED
) ||
845 ckpt_valid_blocks
== sbi
->blocks_per_seg
)) {
846 __locate_dirty_segment(sbi
, segno
, PRE
);
847 __remove_dirty_segment(sbi
, segno
, DIRTY
);
848 } else if (valid_blocks
< sbi
->blocks_per_seg
) {
849 __locate_dirty_segment(sbi
, segno
, DIRTY
);
851 /* Recovery routine with SSR needs this */
852 __remove_dirty_segment(sbi
, segno
, DIRTY
);
855 mutex_unlock(&dirty_i
->seglist_lock
);
858 /* This moves currently empty dirty blocks to prefree. Must hold seglist_lock */
859 void f2fs_dirty_to_prefree(struct f2fs_sb_info
*sbi
)
861 struct dirty_seglist_info
*dirty_i
= DIRTY_I(sbi
);
864 mutex_lock(&dirty_i
->seglist_lock
);
865 for_each_set_bit(segno
, dirty_i
->dirty_segmap
[DIRTY
], MAIN_SEGS(sbi
)) {
866 if (get_valid_blocks(sbi
, segno
, false))
868 if (IS_CURSEG(sbi
, segno
))
870 __locate_dirty_segment(sbi
, segno
, PRE
);
871 __remove_dirty_segment(sbi
, segno
, DIRTY
);
873 mutex_unlock(&dirty_i
->seglist_lock
);
876 block_t
f2fs_get_unusable_blocks(struct f2fs_sb_info
*sbi
)
879 (overprovision_segments(sbi
) - reserved_segments(sbi
));
880 block_t ovp_holes
= ovp_hole_segs
<< sbi
->log_blocks_per_seg
;
881 struct dirty_seglist_info
*dirty_i
= DIRTY_I(sbi
);
882 block_t holes
[2] = {0, 0}; /* DATA and NODE */
884 struct seg_entry
*se
;
887 mutex_lock(&dirty_i
->seglist_lock
);
888 for_each_set_bit(segno
, dirty_i
->dirty_segmap
[DIRTY
], MAIN_SEGS(sbi
)) {
889 se
= get_seg_entry(sbi
, segno
);
890 if (IS_NODESEG(se
->type
))
891 holes
[NODE
] += sbi
->blocks_per_seg
- se
->valid_blocks
;
893 holes
[DATA
] += sbi
->blocks_per_seg
- se
->valid_blocks
;
895 mutex_unlock(&dirty_i
->seglist_lock
);
897 unusable
= holes
[DATA
] > holes
[NODE
] ? holes
[DATA
] : holes
[NODE
];
898 if (unusable
> ovp_holes
)
899 return unusable
- ovp_holes
;
903 int f2fs_disable_cp_again(struct f2fs_sb_info
*sbi
, block_t unusable
)
906 (overprovision_segments(sbi
) - reserved_segments(sbi
));
907 if (unusable
> F2FS_OPTION(sbi
).unusable_cap
)
909 if (is_sbi_flag_set(sbi
, SBI_CP_DISABLED_QUICK
) &&
910 dirty_segments(sbi
) > ovp_hole_segs
)
915 /* This is only used by SBI_CP_DISABLED */
916 static unsigned int get_free_segment(struct f2fs_sb_info
*sbi
)
918 struct dirty_seglist_info
*dirty_i
= DIRTY_I(sbi
);
919 unsigned int segno
= 0;
921 mutex_lock(&dirty_i
->seglist_lock
);
922 for_each_set_bit(segno
, dirty_i
->dirty_segmap
[DIRTY
], MAIN_SEGS(sbi
)) {
923 if (get_valid_blocks(sbi
, segno
, false))
925 if (get_ckpt_valid_blocks(sbi
, segno
))
927 mutex_unlock(&dirty_i
->seglist_lock
);
930 mutex_unlock(&dirty_i
->seglist_lock
);
934 static struct discard_cmd
*__create_discard_cmd(struct f2fs_sb_info
*sbi
,
935 struct block_device
*bdev
, block_t lstart
,
936 block_t start
, block_t len
)
938 struct discard_cmd_control
*dcc
= SM_I(sbi
)->dcc_info
;
939 struct list_head
*pend_list
;
940 struct discard_cmd
*dc
;
942 f2fs_bug_on(sbi
, !len
);
944 pend_list
= &dcc
->pend_list
[plist_idx(len
)];
946 dc
= f2fs_kmem_cache_alloc(discard_cmd_slab
, GFP_NOFS
);
947 INIT_LIST_HEAD(&dc
->list
);
956 init_completion(&dc
->wait
);
957 list_add_tail(&dc
->list
, pend_list
);
958 spin_lock_init(&dc
->lock
);
960 atomic_inc(&dcc
->discard_cmd_cnt
);
961 dcc
->undiscard_blks
+= len
;
966 static struct discard_cmd
*__attach_discard_cmd(struct f2fs_sb_info
*sbi
,
967 struct block_device
*bdev
, block_t lstart
,
968 block_t start
, block_t len
,
969 struct rb_node
*parent
, struct rb_node
**p
,
972 struct discard_cmd_control
*dcc
= SM_I(sbi
)->dcc_info
;
973 struct discard_cmd
*dc
;
975 dc
= __create_discard_cmd(sbi
, bdev
, lstart
, start
, len
);
977 rb_link_node(&dc
->rb_node
, parent
, p
);
978 rb_insert_color_cached(&dc
->rb_node
, &dcc
->root
, leftmost
);
983 static void __detach_discard_cmd(struct discard_cmd_control
*dcc
,
984 struct discard_cmd
*dc
)
986 if (dc
->state
== D_DONE
)
987 atomic_sub(dc
->queued
, &dcc
->queued_discard
);
990 rb_erase_cached(&dc
->rb_node
, &dcc
->root
);
991 dcc
->undiscard_blks
-= dc
->len
;
993 kmem_cache_free(discard_cmd_slab
, dc
);
995 atomic_dec(&dcc
->discard_cmd_cnt
);
998 static void __remove_discard_cmd(struct f2fs_sb_info
*sbi
,
999 struct discard_cmd
*dc
)
1001 struct discard_cmd_control
*dcc
= SM_I(sbi
)->dcc_info
;
1002 unsigned long flags
;
1004 trace_f2fs_remove_discard(dc
->bdev
, dc
->start
, dc
->len
);
1006 spin_lock_irqsave(&dc
->lock
, flags
);
1008 spin_unlock_irqrestore(&dc
->lock
, flags
);
1011 spin_unlock_irqrestore(&dc
->lock
, flags
);
1013 f2fs_bug_on(sbi
, dc
->ref
);
1015 if (dc
->error
== -EOPNOTSUPP
)
1020 "%sF2FS-fs: Issue discard(%u, %u, %u) failed, ret: %d",
1021 KERN_INFO
, dc
->lstart
, dc
->start
, dc
->len
, dc
->error
);
1022 __detach_discard_cmd(dcc
, dc
);
1025 static void f2fs_submit_discard_endio(struct bio
*bio
)
1027 struct discard_cmd
*dc
= (struct discard_cmd
*)bio
->bi_private
;
1028 unsigned long flags
;
1030 dc
->error
= blk_status_to_errno(bio
->bi_status
);
1032 spin_lock_irqsave(&dc
->lock
, flags
);
1034 if (!dc
->bio_ref
&& dc
->state
== D_SUBMIT
) {
1036 complete_all(&dc
->wait
);
1038 spin_unlock_irqrestore(&dc
->lock
, flags
);
1042 static void __check_sit_bitmap(struct f2fs_sb_info
*sbi
,
1043 block_t start
, block_t end
)
1045 #ifdef CONFIG_F2FS_CHECK_FS
1046 struct seg_entry
*sentry
;
1048 block_t blk
= start
;
1049 unsigned long offset
, size
, max_blocks
= sbi
->blocks_per_seg
;
1053 segno
= GET_SEGNO(sbi
, blk
);
1054 sentry
= get_seg_entry(sbi
, segno
);
1055 offset
= GET_BLKOFF_FROM_SEG0(sbi
, blk
);
1057 if (end
< START_BLOCK(sbi
, segno
+ 1))
1058 size
= GET_BLKOFF_FROM_SEG0(sbi
, end
);
1061 map
= (unsigned long *)(sentry
->cur_valid_map
);
1062 offset
= __find_rev_next_bit(map
, size
, offset
);
1063 f2fs_bug_on(sbi
, offset
!= size
);
1064 blk
= START_BLOCK(sbi
, segno
+ 1);
1069 static void __init_discard_policy(struct f2fs_sb_info
*sbi
,
1070 struct discard_policy
*dpolicy
,
1071 int discard_type
, unsigned int granularity
)
1074 dpolicy
->type
= discard_type
;
1075 dpolicy
->sync
= true;
1076 dpolicy
->ordered
= false;
1077 dpolicy
->granularity
= granularity
;
1079 dpolicy
->max_requests
= DEF_MAX_DISCARD_REQUEST
;
1080 dpolicy
->io_aware_gran
= MAX_PLIST_NUM
;
1081 dpolicy
->timeout
= 0;
1083 if (discard_type
== DPOLICY_BG
) {
1084 dpolicy
->min_interval
= DEF_MIN_DISCARD_ISSUE_TIME
;
1085 dpolicy
->mid_interval
= DEF_MID_DISCARD_ISSUE_TIME
;
1086 dpolicy
->max_interval
= DEF_MAX_DISCARD_ISSUE_TIME
;
1087 dpolicy
->io_aware
= true;
1088 dpolicy
->sync
= false;
1089 dpolicy
->ordered
= true;
1090 if (utilization(sbi
) > DEF_DISCARD_URGENT_UTIL
) {
1091 dpolicy
->granularity
= 1;
1092 dpolicy
->max_interval
= DEF_MIN_DISCARD_ISSUE_TIME
;
1094 } else if (discard_type
== DPOLICY_FORCE
) {
1095 dpolicy
->min_interval
= DEF_MIN_DISCARD_ISSUE_TIME
;
1096 dpolicy
->mid_interval
= DEF_MID_DISCARD_ISSUE_TIME
;
1097 dpolicy
->max_interval
= DEF_MAX_DISCARD_ISSUE_TIME
;
1098 dpolicy
->io_aware
= false;
1099 } else if (discard_type
== DPOLICY_FSTRIM
) {
1100 dpolicy
->io_aware
= false;
1101 } else if (discard_type
== DPOLICY_UMOUNT
) {
1102 dpolicy
->max_requests
= UINT_MAX
;
1103 dpolicy
->io_aware
= false;
1104 /* we need to issue all to keep CP_TRIMMED_FLAG */
1105 dpolicy
->granularity
= 1;
1109 static void __update_discard_tree_range(struct f2fs_sb_info
*sbi
,
1110 struct block_device
*bdev
, block_t lstart
,
1111 block_t start
, block_t len
);
1112 /* this function is copied from blkdev_issue_discard from block/blk-lib.c */
1113 static int __submit_discard_cmd(struct f2fs_sb_info
*sbi
,
1114 struct discard_policy
*dpolicy
,
1115 struct discard_cmd
*dc
,
1116 unsigned int *issued
)
1118 struct block_device
*bdev
= dc
->bdev
;
1119 struct request_queue
*q
= bdev_get_queue(bdev
);
1120 unsigned int max_discard_blocks
=
1121 SECTOR_TO_BLOCK(q
->limits
.max_discard_sectors
);
1122 struct discard_cmd_control
*dcc
= SM_I(sbi
)->dcc_info
;
1123 struct list_head
*wait_list
= (dpolicy
->type
== DPOLICY_FSTRIM
) ?
1124 &(dcc
->fstrim_list
) : &(dcc
->wait_list
);
1125 int flag
= dpolicy
->sync
? REQ_SYNC
: 0;
1126 block_t lstart
, start
, len
, total_len
;
1129 if (dc
->state
!= D_PREP
)
1132 if (is_sbi_flag_set(sbi
, SBI_NEED_FSCK
))
1135 trace_f2fs_issue_discard(bdev
, dc
->start
, dc
->len
);
1137 lstart
= dc
->lstart
;
1144 while (total_len
&& *issued
< dpolicy
->max_requests
&& !err
) {
1145 struct bio
*bio
= NULL
;
1146 unsigned long flags
;
1149 if (len
> max_discard_blocks
) {
1150 len
= max_discard_blocks
;
1155 if (*issued
== dpolicy
->max_requests
)
1160 if (time_to_inject(sbi
, FAULT_DISCARD
)) {
1161 f2fs_show_injection_info(FAULT_DISCARD
);
1165 err
= __blkdev_issue_discard(bdev
,
1166 SECTOR_FROM_BLOCK(start
),
1167 SECTOR_FROM_BLOCK(len
),
1171 spin_lock_irqsave(&dc
->lock
, flags
);
1172 if (dc
->state
== D_PARTIAL
)
1173 dc
->state
= D_SUBMIT
;
1174 spin_unlock_irqrestore(&dc
->lock
, flags
);
1179 f2fs_bug_on(sbi
, !bio
);
1182 * should keep before submission to avoid D_DONE
1185 spin_lock_irqsave(&dc
->lock
, flags
);
1187 dc
->state
= D_SUBMIT
;
1189 dc
->state
= D_PARTIAL
;
1191 spin_unlock_irqrestore(&dc
->lock
, flags
);
1193 atomic_inc(&dcc
->queued_discard
);
1195 list_move_tail(&dc
->list
, wait_list
);
1197 /* sanity check on discard range */
1198 __check_sit_bitmap(sbi
, lstart
, lstart
+ len
);
1200 bio
->bi_private
= dc
;
1201 bio
->bi_end_io
= f2fs_submit_discard_endio
;
1202 bio
->bi_opf
|= flag
;
1205 atomic_inc(&dcc
->issued_discard
);
1207 f2fs_update_iostat(sbi
, FS_DISCARD
, 1);
1216 __update_discard_tree_range(sbi
, bdev
, lstart
, start
, len
);
1220 static struct discard_cmd
*__insert_discard_tree(struct f2fs_sb_info
*sbi
,
1221 struct block_device
*bdev
, block_t lstart
,
1222 block_t start
, block_t len
,
1223 struct rb_node
**insert_p
,
1224 struct rb_node
*insert_parent
)
1226 struct discard_cmd_control
*dcc
= SM_I(sbi
)->dcc_info
;
1228 struct rb_node
*parent
= NULL
;
1229 struct discard_cmd
*dc
= NULL
;
1230 bool leftmost
= true;
1232 if (insert_p
&& insert_parent
) {
1233 parent
= insert_parent
;
1238 p
= f2fs_lookup_rb_tree_for_insert(sbi
, &dcc
->root
, &parent
,
1241 dc
= __attach_discard_cmd(sbi
, bdev
, lstart
, start
, len
, parent
,
1249 static void __relocate_discard_cmd(struct discard_cmd_control
*dcc
,
1250 struct discard_cmd
*dc
)
1252 list_move_tail(&dc
->list
, &dcc
->pend_list
[plist_idx(dc
->len
)]);
1255 static void __punch_discard_cmd(struct f2fs_sb_info
*sbi
,
1256 struct discard_cmd
*dc
, block_t blkaddr
)
1258 struct discard_cmd_control
*dcc
= SM_I(sbi
)->dcc_info
;
1259 struct discard_info di
= dc
->di
;
1260 bool modified
= false;
1262 if (dc
->state
== D_DONE
|| dc
->len
== 1) {
1263 __remove_discard_cmd(sbi
, dc
);
1267 dcc
->undiscard_blks
-= di
.len
;
1269 if (blkaddr
> di
.lstart
) {
1270 dc
->len
= blkaddr
- dc
->lstart
;
1271 dcc
->undiscard_blks
+= dc
->len
;
1272 __relocate_discard_cmd(dcc
, dc
);
1276 if (blkaddr
< di
.lstart
+ di
.len
- 1) {
1278 __insert_discard_tree(sbi
, dc
->bdev
, blkaddr
+ 1,
1279 di
.start
+ blkaddr
+ 1 - di
.lstart
,
1280 di
.lstart
+ di
.len
- 1 - blkaddr
,
1286 dcc
->undiscard_blks
+= dc
->len
;
1287 __relocate_discard_cmd(dcc
, dc
);
1292 static void __update_discard_tree_range(struct f2fs_sb_info
*sbi
,
1293 struct block_device
*bdev
, block_t lstart
,
1294 block_t start
, block_t len
)
1296 struct discard_cmd_control
*dcc
= SM_I(sbi
)->dcc_info
;
1297 struct discard_cmd
*prev_dc
= NULL
, *next_dc
= NULL
;
1298 struct discard_cmd
*dc
;
1299 struct discard_info di
= {0};
1300 struct rb_node
**insert_p
= NULL
, *insert_parent
= NULL
;
1301 struct request_queue
*q
= bdev_get_queue(bdev
);
1302 unsigned int max_discard_blocks
=
1303 SECTOR_TO_BLOCK(q
->limits
.max_discard_sectors
);
1304 block_t end
= lstart
+ len
;
1306 dc
= (struct discard_cmd
*)f2fs_lookup_rb_tree_ret(&dcc
->root
,
1308 (struct rb_entry
**)&prev_dc
,
1309 (struct rb_entry
**)&next_dc
,
1310 &insert_p
, &insert_parent
, true, NULL
);
1316 di
.len
= next_dc
? next_dc
->lstart
- lstart
: len
;
1317 di
.len
= min(di
.len
, len
);
1322 struct rb_node
*node
;
1323 bool merged
= false;
1324 struct discard_cmd
*tdc
= NULL
;
1327 di
.lstart
= prev_dc
->lstart
+ prev_dc
->len
;
1328 if (di
.lstart
< lstart
)
1330 if (di
.lstart
>= end
)
1333 if (!next_dc
|| next_dc
->lstart
> end
)
1334 di
.len
= end
- di
.lstart
;
1336 di
.len
= next_dc
->lstart
- di
.lstart
;
1337 di
.start
= start
+ di
.lstart
- lstart
;
1343 if (prev_dc
&& prev_dc
->state
== D_PREP
&&
1344 prev_dc
->bdev
== bdev
&&
1345 __is_discard_back_mergeable(&di
, &prev_dc
->di
,
1346 max_discard_blocks
)) {
1347 prev_dc
->di
.len
+= di
.len
;
1348 dcc
->undiscard_blks
+= di
.len
;
1349 __relocate_discard_cmd(dcc
, prev_dc
);
1355 if (next_dc
&& next_dc
->state
== D_PREP
&&
1356 next_dc
->bdev
== bdev
&&
1357 __is_discard_front_mergeable(&di
, &next_dc
->di
,
1358 max_discard_blocks
)) {
1359 next_dc
->di
.lstart
= di
.lstart
;
1360 next_dc
->di
.len
+= di
.len
;
1361 next_dc
->di
.start
= di
.start
;
1362 dcc
->undiscard_blks
+= di
.len
;
1363 __relocate_discard_cmd(dcc
, next_dc
);
1365 __remove_discard_cmd(sbi
, tdc
);
1370 __insert_discard_tree(sbi
, bdev
, di
.lstart
, di
.start
,
1371 di
.len
, NULL
, NULL
);
1378 node
= rb_next(&prev_dc
->rb_node
);
1379 next_dc
= rb_entry_safe(node
, struct discard_cmd
, rb_node
);
1383 static int __queue_discard_cmd(struct f2fs_sb_info
*sbi
,
1384 struct block_device
*bdev
, block_t blkstart
, block_t blklen
)
1386 block_t lblkstart
= blkstart
;
1388 if (!f2fs_bdev_support_discard(bdev
))
1391 trace_f2fs_queue_discard(bdev
, blkstart
, blklen
);
1393 if (f2fs_is_multi_device(sbi
)) {
1394 int devi
= f2fs_target_device_index(sbi
, blkstart
);
1396 blkstart
-= FDEV(devi
).start_blk
;
1398 mutex_lock(&SM_I(sbi
)->dcc_info
->cmd_lock
);
1399 __update_discard_tree_range(sbi
, bdev
, lblkstart
, blkstart
, blklen
);
1400 mutex_unlock(&SM_I(sbi
)->dcc_info
->cmd_lock
);
1404 static unsigned int __issue_discard_cmd_orderly(struct f2fs_sb_info
*sbi
,
1405 struct discard_policy
*dpolicy
)
1407 struct discard_cmd_control
*dcc
= SM_I(sbi
)->dcc_info
;
1408 struct discard_cmd
*prev_dc
= NULL
, *next_dc
= NULL
;
1409 struct rb_node
**insert_p
= NULL
, *insert_parent
= NULL
;
1410 struct discard_cmd
*dc
;
1411 struct blk_plug plug
;
1412 unsigned int pos
= dcc
->next_pos
;
1413 unsigned int issued
= 0;
1414 bool io_interrupted
= false;
1416 mutex_lock(&dcc
->cmd_lock
);
1417 dc
= (struct discard_cmd
*)f2fs_lookup_rb_tree_ret(&dcc
->root
,
1419 (struct rb_entry
**)&prev_dc
,
1420 (struct rb_entry
**)&next_dc
,
1421 &insert_p
, &insert_parent
, true, NULL
);
1425 blk_start_plug(&plug
);
1428 struct rb_node
*node
;
1431 if (dc
->state
!= D_PREP
)
1434 if (dpolicy
->io_aware
&& !is_idle(sbi
, DISCARD_TIME
)) {
1435 io_interrupted
= true;
1439 dcc
->next_pos
= dc
->lstart
+ dc
->len
;
1440 err
= __submit_discard_cmd(sbi
, dpolicy
, dc
, &issued
);
1442 if (issued
>= dpolicy
->max_requests
)
1445 node
= rb_next(&dc
->rb_node
);
1447 __remove_discard_cmd(sbi
, dc
);
1448 dc
= rb_entry_safe(node
, struct discard_cmd
, rb_node
);
1451 blk_finish_plug(&plug
);
1456 mutex_unlock(&dcc
->cmd_lock
);
1458 if (!issued
&& io_interrupted
)
1464 static int __issue_discard_cmd(struct f2fs_sb_info
*sbi
,
1465 struct discard_policy
*dpolicy
)
1467 struct discard_cmd_control
*dcc
= SM_I(sbi
)->dcc_info
;
1468 struct list_head
*pend_list
;
1469 struct discard_cmd
*dc
, *tmp
;
1470 struct blk_plug plug
;
1472 bool io_interrupted
= false;
1474 if (dpolicy
->timeout
!= 0)
1475 f2fs_update_time(sbi
, dpolicy
->timeout
);
1477 for (i
= MAX_PLIST_NUM
- 1; i
>= 0; i
--) {
1478 if (dpolicy
->timeout
!= 0 &&
1479 f2fs_time_over(sbi
, dpolicy
->timeout
))
1482 if (i
+ 1 < dpolicy
->granularity
)
1485 if (i
< DEFAULT_DISCARD_GRANULARITY
&& dpolicy
->ordered
)
1486 return __issue_discard_cmd_orderly(sbi
, dpolicy
);
1488 pend_list
= &dcc
->pend_list
[i
];
1490 mutex_lock(&dcc
->cmd_lock
);
1491 if (list_empty(pend_list
))
1493 if (unlikely(dcc
->rbtree_check
))
1494 f2fs_bug_on(sbi
, !f2fs_check_rb_tree_consistence(sbi
,
1496 blk_start_plug(&plug
);
1497 list_for_each_entry_safe(dc
, tmp
, pend_list
, list
) {
1498 f2fs_bug_on(sbi
, dc
->state
!= D_PREP
);
1500 if (dpolicy
->timeout
!= 0 &&
1501 f2fs_time_over(sbi
, dpolicy
->timeout
))
1504 if (dpolicy
->io_aware
&& i
< dpolicy
->io_aware_gran
&&
1505 !is_idle(sbi
, DISCARD_TIME
)) {
1506 io_interrupted
= true;
1510 __submit_discard_cmd(sbi
, dpolicy
, dc
, &issued
);
1512 if (issued
>= dpolicy
->max_requests
)
1515 blk_finish_plug(&plug
);
1517 mutex_unlock(&dcc
->cmd_lock
);
1519 if (issued
>= dpolicy
->max_requests
|| io_interrupted
)
1523 if (!issued
&& io_interrupted
)
1529 static bool __drop_discard_cmd(struct f2fs_sb_info
*sbi
)
1531 struct discard_cmd_control
*dcc
= SM_I(sbi
)->dcc_info
;
1532 struct list_head
*pend_list
;
1533 struct discard_cmd
*dc
, *tmp
;
1535 bool dropped
= false;
1537 mutex_lock(&dcc
->cmd_lock
);
1538 for (i
= MAX_PLIST_NUM
- 1; i
>= 0; i
--) {
1539 pend_list
= &dcc
->pend_list
[i
];
1540 list_for_each_entry_safe(dc
, tmp
, pend_list
, list
) {
1541 f2fs_bug_on(sbi
, dc
->state
!= D_PREP
);
1542 __remove_discard_cmd(sbi
, dc
);
1546 mutex_unlock(&dcc
->cmd_lock
);
1551 void f2fs_drop_discard_cmd(struct f2fs_sb_info
*sbi
)
1553 __drop_discard_cmd(sbi
);
1556 static unsigned int __wait_one_discard_bio(struct f2fs_sb_info
*sbi
,
1557 struct discard_cmd
*dc
)
1559 struct discard_cmd_control
*dcc
= SM_I(sbi
)->dcc_info
;
1560 unsigned int len
= 0;
1562 wait_for_completion_io(&dc
->wait
);
1563 mutex_lock(&dcc
->cmd_lock
);
1564 f2fs_bug_on(sbi
, dc
->state
!= D_DONE
);
1569 __remove_discard_cmd(sbi
, dc
);
1571 mutex_unlock(&dcc
->cmd_lock
);
1576 static unsigned int __wait_discard_cmd_range(struct f2fs_sb_info
*sbi
,
1577 struct discard_policy
*dpolicy
,
1578 block_t start
, block_t end
)
1580 struct discard_cmd_control
*dcc
= SM_I(sbi
)->dcc_info
;
1581 struct list_head
*wait_list
= (dpolicy
->type
== DPOLICY_FSTRIM
) ?
1582 &(dcc
->fstrim_list
) : &(dcc
->wait_list
);
1583 struct discard_cmd
*dc
, *tmp
;
1585 unsigned int trimmed
= 0;
1590 mutex_lock(&dcc
->cmd_lock
);
1591 list_for_each_entry_safe(dc
, tmp
, wait_list
, list
) {
1592 if (dc
->lstart
+ dc
->len
<= start
|| end
<= dc
->lstart
)
1594 if (dc
->len
< dpolicy
->granularity
)
1596 if (dc
->state
== D_DONE
&& !dc
->ref
) {
1597 wait_for_completion_io(&dc
->wait
);
1600 __remove_discard_cmd(sbi
, dc
);
1607 mutex_unlock(&dcc
->cmd_lock
);
1610 trimmed
+= __wait_one_discard_bio(sbi
, dc
);
1617 static unsigned int __wait_all_discard_cmd(struct f2fs_sb_info
*sbi
,
1618 struct discard_policy
*dpolicy
)
1620 struct discard_policy dp
;
1621 unsigned int discard_blks
;
1624 return __wait_discard_cmd_range(sbi
, dpolicy
, 0, UINT_MAX
);
1627 __init_discard_policy(sbi
, &dp
, DPOLICY_FSTRIM
, 1);
1628 discard_blks
= __wait_discard_cmd_range(sbi
, &dp
, 0, UINT_MAX
);
1629 __init_discard_policy(sbi
, &dp
, DPOLICY_UMOUNT
, 1);
1630 discard_blks
+= __wait_discard_cmd_range(sbi
, &dp
, 0, UINT_MAX
);
1632 return discard_blks
;
1635 /* This should be covered by global mutex, &sit_i->sentry_lock */
1636 static void f2fs_wait_discard_bio(struct f2fs_sb_info
*sbi
, block_t blkaddr
)
1638 struct discard_cmd_control
*dcc
= SM_I(sbi
)->dcc_info
;
1639 struct discard_cmd
*dc
;
1640 bool need_wait
= false;
1642 mutex_lock(&dcc
->cmd_lock
);
1643 dc
= (struct discard_cmd
*)f2fs_lookup_rb_tree(&dcc
->root
,
1646 if (dc
->state
== D_PREP
) {
1647 __punch_discard_cmd(sbi
, dc
, blkaddr
);
1653 mutex_unlock(&dcc
->cmd_lock
);
1656 __wait_one_discard_bio(sbi
, dc
);
1659 void f2fs_stop_discard_thread(struct f2fs_sb_info
*sbi
)
1661 struct discard_cmd_control
*dcc
= SM_I(sbi
)->dcc_info
;
1663 if (dcc
&& dcc
->f2fs_issue_discard
) {
1664 struct task_struct
*discard_thread
= dcc
->f2fs_issue_discard
;
1666 dcc
->f2fs_issue_discard
= NULL
;
1667 kthread_stop(discard_thread
);
1671 /* This comes from f2fs_put_super */
1672 bool f2fs_issue_discard_timeout(struct f2fs_sb_info
*sbi
)
1674 struct discard_cmd_control
*dcc
= SM_I(sbi
)->dcc_info
;
1675 struct discard_policy dpolicy
;
1678 __init_discard_policy(sbi
, &dpolicy
, DPOLICY_UMOUNT
,
1679 dcc
->discard_granularity
);
1680 dpolicy
.timeout
= UMOUNT_DISCARD_TIMEOUT
;
1681 __issue_discard_cmd(sbi
, &dpolicy
);
1682 dropped
= __drop_discard_cmd(sbi
);
1684 /* just to make sure there is no pending discard commands */
1685 __wait_all_discard_cmd(sbi
, NULL
);
1687 f2fs_bug_on(sbi
, atomic_read(&dcc
->discard_cmd_cnt
));
1691 static int issue_discard_thread(void *data
)
1693 struct f2fs_sb_info
*sbi
= data
;
1694 struct discard_cmd_control
*dcc
= SM_I(sbi
)->dcc_info
;
1695 wait_queue_head_t
*q
= &dcc
->discard_wait_queue
;
1696 struct discard_policy dpolicy
;
1697 unsigned int wait_ms
= DEF_MIN_DISCARD_ISSUE_TIME
;
1703 __init_discard_policy(sbi
, &dpolicy
, DPOLICY_BG
,
1704 dcc
->discard_granularity
);
1706 wait_event_interruptible_timeout(*q
,
1707 kthread_should_stop() || freezing(current
) ||
1709 msecs_to_jiffies(wait_ms
));
1711 if (dcc
->discard_wake
)
1712 dcc
->discard_wake
= 0;
1714 /* clean up pending candidates before going to sleep */
1715 if (atomic_read(&dcc
->queued_discard
))
1716 __wait_all_discard_cmd(sbi
, NULL
);
1718 if (try_to_freeze())
1720 if (f2fs_readonly(sbi
->sb
))
1722 if (kthread_should_stop())
1724 if (is_sbi_flag_set(sbi
, SBI_NEED_FSCK
)) {
1725 wait_ms
= dpolicy
.max_interval
;
1729 if (sbi
->gc_mode
== GC_URGENT
)
1730 __init_discard_policy(sbi
, &dpolicy
, DPOLICY_FORCE
, 1);
1732 sb_start_intwrite(sbi
->sb
);
1734 issued
= __issue_discard_cmd(sbi
, &dpolicy
);
1736 __wait_all_discard_cmd(sbi
, &dpolicy
);
1737 wait_ms
= dpolicy
.min_interval
;
1738 } else if (issued
== -1){
1739 wait_ms
= f2fs_time_to_wait(sbi
, DISCARD_TIME
);
1741 wait_ms
= dpolicy
.mid_interval
;
1743 wait_ms
= dpolicy
.max_interval
;
1746 sb_end_intwrite(sbi
->sb
);
1748 } while (!kthread_should_stop());
1752 #ifdef CONFIG_BLK_DEV_ZONED
1753 static int __f2fs_issue_discard_zone(struct f2fs_sb_info
*sbi
,
1754 struct block_device
*bdev
, block_t blkstart
, block_t blklen
)
1756 sector_t sector
, nr_sects
;
1757 block_t lblkstart
= blkstart
;
1760 if (f2fs_is_multi_device(sbi
)) {
1761 devi
= f2fs_target_device_index(sbi
, blkstart
);
1762 if (blkstart
< FDEV(devi
).start_blk
||
1763 blkstart
> FDEV(devi
).end_blk
) {
1764 f2fs_err(sbi
, "Invalid block %x", blkstart
);
1767 blkstart
-= FDEV(devi
).start_blk
;
1770 /* For sequential zones, reset the zone write pointer */
1771 if (f2fs_blkz_is_seq(sbi
, devi
, blkstart
)) {
1772 sector
= SECTOR_FROM_BLOCK(blkstart
);
1773 nr_sects
= SECTOR_FROM_BLOCK(blklen
);
1775 if (sector
& (bdev_zone_sectors(bdev
) - 1) ||
1776 nr_sects
!= bdev_zone_sectors(bdev
)) {
1777 f2fs_err(sbi
, "(%d) %s: Unaligned zone reset attempted (block %x + %x)",
1778 devi
, sbi
->s_ndevs
? FDEV(devi
).path
: "",
1782 trace_f2fs_issue_reset_zone(bdev
, blkstart
);
1783 return blkdev_reset_zones(bdev
, sector
, nr_sects
, GFP_NOFS
);
1786 /* For conventional zones, use regular discard if supported */
1787 return __queue_discard_cmd(sbi
, bdev
, lblkstart
, blklen
);
1791 static int __issue_discard_async(struct f2fs_sb_info
*sbi
,
1792 struct block_device
*bdev
, block_t blkstart
, block_t blklen
)
1794 #ifdef CONFIG_BLK_DEV_ZONED
1795 if (f2fs_sb_has_blkzoned(sbi
) && bdev_is_zoned(bdev
))
1796 return __f2fs_issue_discard_zone(sbi
, bdev
, blkstart
, blklen
);
1798 return __queue_discard_cmd(sbi
, bdev
, blkstart
, blklen
);
1801 static int f2fs_issue_discard(struct f2fs_sb_info
*sbi
,
1802 block_t blkstart
, block_t blklen
)
1804 sector_t start
= blkstart
, len
= 0;
1805 struct block_device
*bdev
;
1806 struct seg_entry
*se
;
1807 unsigned int offset
;
1811 bdev
= f2fs_target_device(sbi
, blkstart
, NULL
);
1813 for (i
= blkstart
; i
< blkstart
+ blklen
; i
++, len
++) {
1815 struct block_device
*bdev2
=
1816 f2fs_target_device(sbi
, i
, NULL
);
1818 if (bdev2
!= bdev
) {
1819 err
= __issue_discard_async(sbi
, bdev
,
1829 se
= get_seg_entry(sbi
, GET_SEGNO(sbi
, i
));
1830 offset
= GET_BLKOFF_FROM_SEG0(sbi
, i
);
1832 if (!f2fs_test_and_set_bit(offset
, se
->discard_map
))
1833 sbi
->discard_blks
--;
1837 err
= __issue_discard_async(sbi
, bdev
, start
, len
);
1841 static bool add_discard_addrs(struct f2fs_sb_info
*sbi
, struct cp_control
*cpc
,
1844 int entries
= SIT_VBLOCK_MAP_SIZE
/ sizeof(unsigned long);
1845 int max_blocks
= sbi
->blocks_per_seg
;
1846 struct seg_entry
*se
= get_seg_entry(sbi
, cpc
->trim_start
);
1847 unsigned long *cur_map
= (unsigned long *)se
->cur_valid_map
;
1848 unsigned long *ckpt_map
= (unsigned long *)se
->ckpt_valid_map
;
1849 unsigned long *discard_map
= (unsigned long *)se
->discard_map
;
1850 unsigned long *dmap
= SIT_I(sbi
)->tmp_map
;
1851 unsigned int start
= 0, end
= -1;
1852 bool force
= (cpc
->reason
& CP_DISCARD
);
1853 struct discard_entry
*de
= NULL
;
1854 struct list_head
*head
= &SM_I(sbi
)->dcc_info
->entry_list
;
1857 if (se
->valid_blocks
== max_blocks
|| !f2fs_hw_support_discard(sbi
))
1861 if (!f2fs_realtime_discard_enable(sbi
) || !se
->valid_blocks
||
1862 SM_I(sbi
)->dcc_info
->nr_discards
>=
1863 SM_I(sbi
)->dcc_info
->max_discards
)
1867 /* SIT_VBLOCK_MAP_SIZE should be multiple of sizeof(unsigned long) */
1868 for (i
= 0; i
< entries
; i
++)
1869 dmap
[i
] = force
? ~ckpt_map
[i
] & ~discard_map
[i
] :
1870 (cur_map
[i
] ^ ckpt_map
[i
]) & ckpt_map
[i
];
1872 while (force
|| SM_I(sbi
)->dcc_info
->nr_discards
<=
1873 SM_I(sbi
)->dcc_info
->max_discards
) {
1874 start
= __find_rev_next_bit(dmap
, max_blocks
, end
+ 1);
1875 if (start
>= max_blocks
)
1878 end
= __find_rev_next_zero_bit(dmap
, max_blocks
, start
+ 1);
1879 if (force
&& start
&& end
!= max_blocks
1880 && (end
- start
) < cpc
->trim_minlen
)
1887 de
= f2fs_kmem_cache_alloc(discard_entry_slab
,
1889 de
->start_blkaddr
= START_BLOCK(sbi
, cpc
->trim_start
);
1890 list_add_tail(&de
->list
, head
);
1893 for (i
= start
; i
< end
; i
++)
1894 __set_bit_le(i
, (void *)de
->discard_map
);
1896 SM_I(sbi
)->dcc_info
->nr_discards
+= end
- start
;
1901 static void release_discard_addr(struct discard_entry
*entry
)
1903 list_del(&entry
->list
);
1904 kmem_cache_free(discard_entry_slab
, entry
);
1907 void f2fs_release_discard_addrs(struct f2fs_sb_info
*sbi
)
1909 struct list_head
*head
= &(SM_I(sbi
)->dcc_info
->entry_list
);
1910 struct discard_entry
*entry
, *this;
1913 list_for_each_entry_safe(entry
, this, head
, list
)
1914 release_discard_addr(entry
);
1918 * Should call f2fs_clear_prefree_segments after checkpoint is done.
1920 static void set_prefree_as_free_segments(struct f2fs_sb_info
*sbi
)
1922 struct dirty_seglist_info
*dirty_i
= DIRTY_I(sbi
);
1925 mutex_lock(&dirty_i
->seglist_lock
);
1926 for_each_set_bit(segno
, dirty_i
->dirty_segmap
[PRE
], MAIN_SEGS(sbi
))
1927 __set_test_and_free(sbi
, segno
);
1928 mutex_unlock(&dirty_i
->seglist_lock
);
1931 void f2fs_clear_prefree_segments(struct f2fs_sb_info
*sbi
,
1932 struct cp_control
*cpc
)
1934 struct discard_cmd_control
*dcc
= SM_I(sbi
)->dcc_info
;
1935 struct list_head
*head
= &dcc
->entry_list
;
1936 struct discard_entry
*entry
, *this;
1937 struct dirty_seglist_info
*dirty_i
= DIRTY_I(sbi
);
1938 unsigned long *prefree_map
= dirty_i
->dirty_segmap
[PRE
];
1939 unsigned int start
= 0, end
= -1;
1940 unsigned int secno
, start_segno
;
1941 bool force
= (cpc
->reason
& CP_DISCARD
);
1942 bool need_align
= test_opt(sbi
, LFS
) && __is_large_section(sbi
);
1944 mutex_lock(&dirty_i
->seglist_lock
);
1949 if (need_align
&& end
!= -1)
1951 start
= find_next_bit(prefree_map
, MAIN_SEGS(sbi
), end
+ 1);
1952 if (start
>= MAIN_SEGS(sbi
))
1954 end
= find_next_zero_bit(prefree_map
, MAIN_SEGS(sbi
),
1958 start
= rounddown(start
, sbi
->segs_per_sec
);
1959 end
= roundup(end
, sbi
->segs_per_sec
);
1962 for (i
= start
; i
< end
; i
++) {
1963 if (test_and_clear_bit(i
, prefree_map
))
1964 dirty_i
->nr_dirty
[PRE
]--;
1967 if (!f2fs_realtime_discard_enable(sbi
))
1970 if (force
&& start
>= cpc
->trim_start
&&
1971 (end
- 1) <= cpc
->trim_end
)
1974 if (!test_opt(sbi
, LFS
) || !__is_large_section(sbi
)) {
1975 f2fs_issue_discard(sbi
, START_BLOCK(sbi
, start
),
1976 (end
- start
) << sbi
->log_blocks_per_seg
);
1980 secno
= GET_SEC_FROM_SEG(sbi
, start
);
1981 start_segno
= GET_SEG_FROM_SEC(sbi
, secno
);
1982 if (!IS_CURSEC(sbi
, secno
) &&
1983 !get_valid_blocks(sbi
, start
, true))
1984 f2fs_issue_discard(sbi
, START_BLOCK(sbi
, start_segno
),
1985 sbi
->segs_per_sec
<< sbi
->log_blocks_per_seg
);
1987 start
= start_segno
+ sbi
->segs_per_sec
;
1993 mutex_unlock(&dirty_i
->seglist_lock
);
1995 /* send small discards */
1996 list_for_each_entry_safe(entry
, this, head
, list
) {
1997 unsigned int cur_pos
= 0, next_pos
, len
, total_len
= 0;
1998 bool is_valid
= test_bit_le(0, entry
->discard_map
);
2002 next_pos
= find_next_zero_bit_le(entry
->discard_map
,
2003 sbi
->blocks_per_seg
, cur_pos
);
2004 len
= next_pos
- cur_pos
;
2006 if (f2fs_sb_has_blkzoned(sbi
) ||
2007 (force
&& len
< cpc
->trim_minlen
))
2010 f2fs_issue_discard(sbi
, entry
->start_blkaddr
+ cur_pos
,
2014 next_pos
= find_next_bit_le(entry
->discard_map
,
2015 sbi
->blocks_per_seg
, cur_pos
);
2019 is_valid
= !is_valid
;
2021 if (cur_pos
< sbi
->blocks_per_seg
)
2024 release_discard_addr(entry
);
2025 dcc
->nr_discards
-= total_len
;
2028 wake_up_discard_thread(sbi
, false);
2031 static int create_discard_cmd_control(struct f2fs_sb_info
*sbi
)
2033 dev_t dev
= sbi
->sb
->s_bdev
->bd_dev
;
2034 struct discard_cmd_control
*dcc
;
2037 if (SM_I(sbi
)->dcc_info
) {
2038 dcc
= SM_I(sbi
)->dcc_info
;
2042 dcc
= f2fs_kzalloc(sbi
, sizeof(struct discard_cmd_control
), GFP_KERNEL
);
2046 dcc
->discard_granularity
= DEFAULT_DISCARD_GRANULARITY
;
2047 INIT_LIST_HEAD(&dcc
->entry_list
);
2048 for (i
= 0; i
< MAX_PLIST_NUM
; i
++)
2049 INIT_LIST_HEAD(&dcc
->pend_list
[i
]);
2050 INIT_LIST_HEAD(&dcc
->wait_list
);
2051 INIT_LIST_HEAD(&dcc
->fstrim_list
);
2052 mutex_init(&dcc
->cmd_lock
);
2053 atomic_set(&dcc
->issued_discard
, 0);
2054 atomic_set(&dcc
->queued_discard
, 0);
2055 atomic_set(&dcc
->discard_cmd_cnt
, 0);
2056 dcc
->nr_discards
= 0;
2057 dcc
->max_discards
= MAIN_SEGS(sbi
) << sbi
->log_blocks_per_seg
;
2058 dcc
->undiscard_blks
= 0;
2060 dcc
->root
= RB_ROOT_CACHED
;
2061 dcc
->rbtree_check
= false;
2063 init_waitqueue_head(&dcc
->discard_wait_queue
);
2064 SM_I(sbi
)->dcc_info
= dcc
;
2066 dcc
->f2fs_issue_discard
= kthread_run(issue_discard_thread
, sbi
,
2067 "f2fs_discard-%u:%u", MAJOR(dev
), MINOR(dev
));
2068 if (IS_ERR(dcc
->f2fs_issue_discard
)) {
2069 err
= PTR_ERR(dcc
->f2fs_issue_discard
);
2071 SM_I(sbi
)->dcc_info
= NULL
;
2078 static void destroy_discard_cmd_control(struct f2fs_sb_info
*sbi
)
2080 struct discard_cmd_control
*dcc
= SM_I(sbi
)->dcc_info
;
2085 f2fs_stop_discard_thread(sbi
);
2088 SM_I(sbi
)->dcc_info
= NULL
;
2091 static bool __mark_sit_entry_dirty(struct f2fs_sb_info
*sbi
, unsigned int segno
)
2093 struct sit_info
*sit_i
= SIT_I(sbi
);
2095 if (!__test_and_set_bit(segno
, sit_i
->dirty_sentries_bitmap
)) {
2096 sit_i
->dirty_sentries
++;
2103 static void __set_sit_entry_type(struct f2fs_sb_info
*sbi
, int type
,
2104 unsigned int segno
, int modified
)
2106 struct seg_entry
*se
= get_seg_entry(sbi
, segno
);
2109 __mark_sit_entry_dirty(sbi
, segno
);
2112 static void update_sit_entry(struct f2fs_sb_info
*sbi
, block_t blkaddr
, int del
)
2114 struct seg_entry
*se
;
2115 unsigned int segno
, offset
;
2116 long int new_vblocks
;
2118 #ifdef CONFIG_F2FS_CHECK_FS
2122 segno
= GET_SEGNO(sbi
, blkaddr
);
2124 se
= get_seg_entry(sbi
, segno
);
2125 new_vblocks
= se
->valid_blocks
+ del
;
2126 offset
= GET_BLKOFF_FROM_SEG0(sbi
, blkaddr
);
2128 f2fs_bug_on(sbi
, (new_vblocks
>> (sizeof(unsigned short) << 3) ||
2129 (new_vblocks
> sbi
->blocks_per_seg
)));
2131 se
->valid_blocks
= new_vblocks
;
2132 se
->mtime
= get_mtime(sbi
, false);
2133 if (se
->mtime
> SIT_I(sbi
)->max_mtime
)
2134 SIT_I(sbi
)->max_mtime
= se
->mtime
;
2136 /* Update valid block bitmap */
2138 exist
= f2fs_test_and_set_bit(offset
, se
->cur_valid_map
);
2139 #ifdef CONFIG_F2FS_CHECK_FS
2140 mir_exist
= f2fs_test_and_set_bit(offset
,
2141 se
->cur_valid_map_mir
);
2142 if (unlikely(exist
!= mir_exist
)) {
2143 f2fs_err(sbi
, "Inconsistent error when setting bitmap, blk:%u, old bit:%d",
2145 f2fs_bug_on(sbi
, 1);
2148 if (unlikely(exist
)) {
2149 f2fs_err(sbi
, "Bitmap was wrongly set, blk:%u",
2151 f2fs_bug_on(sbi
, 1);
2156 if (!f2fs_test_and_set_bit(offset
, se
->discard_map
))
2157 sbi
->discard_blks
--;
2159 /* don't overwrite by SSR to keep node chain */
2160 if (IS_NODESEG(se
->type
) &&
2161 !is_sbi_flag_set(sbi
, SBI_CP_DISABLED
)) {
2162 if (!f2fs_test_and_set_bit(offset
, se
->ckpt_valid_map
))
2163 se
->ckpt_valid_blocks
++;
2166 exist
= f2fs_test_and_clear_bit(offset
, se
->cur_valid_map
);
2167 #ifdef CONFIG_F2FS_CHECK_FS
2168 mir_exist
= f2fs_test_and_clear_bit(offset
,
2169 se
->cur_valid_map_mir
);
2170 if (unlikely(exist
!= mir_exist
)) {
2171 f2fs_err(sbi
, "Inconsistent error when clearing bitmap, blk:%u, old bit:%d",
2173 f2fs_bug_on(sbi
, 1);
2176 if (unlikely(!exist
)) {
2177 f2fs_err(sbi
, "Bitmap was wrongly cleared, blk:%u",
2179 f2fs_bug_on(sbi
, 1);
2182 } else if (unlikely(is_sbi_flag_set(sbi
, SBI_CP_DISABLED
))) {
2184 * If checkpoints are off, we must not reuse data that
2185 * was used in the previous checkpoint. If it was used
2186 * before, we must track that to know how much space we
2189 if (f2fs_test_bit(offset
, se
->ckpt_valid_map
)) {
2190 spin_lock(&sbi
->stat_lock
);
2191 sbi
->unusable_block_count
++;
2192 spin_unlock(&sbi
->stat_lock
);
2196 if (f2fs_test_and_clear_bit(offset
, se
->discard_map
))
2197 sbi
->discard_blks
++;
2199 if (!f2fs_test_bit(offset
, se
->ckpt_valid_map
))
2200 se
->ckpt_valid_blocks
+= del
;
2202 __mark_sit_entry_dirty(sbi
, segno
);
2204 /* update total number of valid blocks to be written in ckpt area */
2205 SIT_I(sbi
)->written_valid_blocks
+= del
;
2207 if (__is_large_section(sbi
))
2208 get_sec_entry(sbi
, segno
)->valid_blocks
+= del
;
2211 void f2fs_invalidate_blocks(struct f2fs_sb_info
*sbi
, block_t addr
)
2213 unsigned int segno
= GET_SEGNO(sbi
, addr
);
2214 struct sit_info
*sit_i
= SIT_I(sbi
);
2216 f2fs_bug_on(sbi
, addr
== NULL_ADDR
);
2217 if (addr
== NEW_ADDR
)
2220 invalidate_mapping_pages(META_MAPPING(sbi
), addr
, addr
);
2222 /* add it into sit main buffer */
2223 down_write(&sit_i
->sentry_lock
);
2225 update_sit_entry(sbi
, addr
, -1);
2227 /* add it into dirty seglist */
2228 locate_dirty_segment(sbi
, segno
);
2230 up_write(&sit_i
->sentry_lock
);
2233 bool f2fs_is_checkpointed_data(struct f2fs_sb_info
*sbi
, block_t blkaddr
)
2235 struct sit_info
*sit_i
= SIT_I(sbi
);
2236 unsigned int segno
, offset
;
2237 struct seg_entry
*se
;
2240 if (!__is_valid_data_blkaddr(blkaddr
))
2243 down_read(&sit_i
->sentry_lock
);
2245 segno
= GET_SEGNO(sbi
, blkaddr
);
2246 se
= get_seg_entry(sbi
, segno
);
2247 offset
= GET_BLKOFF_FROM_SEG0(sbi
, blkaddr
);
2249 if (f2fs_test_bit(offset
, se
->ckpt_valid_map
))
2252 up_read(&sit_i
->sentry_lock
);
2258 * This function should be resided under the curseg_mutex lock
2260 static void __add_sum_entry(struct f2fs_sb_info
*sbi
, int type
,
2261 struct f2fs_summary
*sum
)
2263 struct curseg_info
*curseg
= CURSEG_I(sbi
, type
);
2264 void *addr
= curseg
->sum_blk
;
2265 addr
+= curseg
->next_blkoff
* sizeof(struct f2fs_summary
);
2266 memcpy(addr
, sum
, sizeof(struct f2fs_summary
));
2270 * Calculate the number of current summary pages for writing
2272 int f2fs_npages_for_summary_flush(struct f2fs_sb_info
*sbi
, bool for_ra
)
2274 int valid_sum_count
= 0;
2277 for (i
= CURSEG_HOT_DATA
; i
<= CURSEG_COLD_DATA
; i
++) {
2278 if (sbi
->ckpt
->alloc_type
[i
] == SSR
)
2279 valid_sum_count
+= sbi
->blocks_per_seg
;
2282 valid_sum_count
+= le16_to_cpu(
2283 F2FS_CKPT(sbi
)->cur_data_blkoff
[i
]);
2285 valid_sum_count
+= curseg_blkoff(sbi
, i
);
2289 sum_in_page
= (PAGE_SIZE
- 2 * SUM_JOURNAL_SIZE
-
2290 SUM_FOOTER_SIZE
) / SUMMARY_SIZE
;
2291 if (valid_sum_count
<= sum_in_page
)
2293 else if ((valid_sum_count
- sum_in_page
) <=
2294 (PAGE_SIZE
- SUM_FOOTER_SIZE
) / SUMMARY_SIZE
)
2300 * Caller should put this summary page
2302 struct page
*f2fs_get_sum_page(struct f2fs_sb_info
*sbi
, unsigned int segno
)
2304 return f2fs_get_meta_page_nofail(sbi
, GET_SUM_BLOCK(sbi
, segno
));
2307 void f2fs_update_meta_page(struct f2fs_sb_info
*sbi
,
2308 void *src
, block_t blk_addr
)
2310 struct page
*page
= f2fs_grab_meta_page(sbi
, blk_addr
);
2312 memcpy(page_address(page
), src
, PAGE_SIZE
);
2313 set_page_dirty(page
);
2314 f2fs_put_page(page
, 1);
2317 static void write_sum_page(struct f2fs_sb_info
*sbi
,
2318 struct f2fs_summary_block
*sum_blk
, block_t blk_addr
)
2320 f2fs_update_meta_page(sbi
, (void *)sum_blk
, blk_addr
);
2323 static void write_current_sum_page(struct f2fs_sb_info
*sbi
,
2324 int type
, block_t blk_addr
)
2326 struct curseg_info
*curseg
= CURSEG_I(sbi
, type
);
2327 struct page
*page
= f2fs_grab_meta_page(sbi
, blk_addr
);
2328 struct f2fs_summary_block
*src
= curseg
->sum_blk
;
2329 struct f2fs_summary_block
*dst
;
2331 dst
= (struct f2fs_summary_block
*)page_address(page
);
2332 memset(dst
, 0, PAGE_SIZE
);
2334 mutex_lock(&curseg
->curseg_mutex
);
2336 down_read(&curseg
->journal_rwsem
);
2337 memcpy(&dst
->journal
, curseg
->journal
, SUM_JOURNAL_SIZE
);
2338 up_read(&curseg
->journal_rwsem
);
2340 memcpy(dst
->entries
, src
->entries
, SUM_ENTRY_SIZE
);
2341 memcpy(&dst
->footer
, &src
->footer
, SUM_FOOTER_SIZE
);
2343 mutex_unlock(&curseg
->curseg_mutex
);
2345 set_page_dirty(page
);
2346 f2fs_put_page(page
, 1);
2349 static int is_next_segment_free(struct f2fs_sb_info
*sbi
, int type
)
2351 struct curseg_info
*curseg
= CURSEG_I(sbi
, type
);
2352 unsigned int segno
= curseg
->segno
+ 1;
2353 struct free_segmap_info
*free_i
= FREE_I(sbi
);
2355 if (segno
< MAIN_SEGS(sbi
) && segno
% sbi
->segs_per_sec
)
2356 return !test_bit(segno
, free_i
->free_segmap
);
2361 * Find a new segment from the free segments bitmap to right order
2362 * This function should be returned with success, otherwise BUG
2364 static void get_new_segment(struct f2fs_sb_info
*sbi
,
2365 unsigned int *newseg
, bool new_sec
, int dir
)
2367 struct free_segmap_info
*free_i
= FREE_I(sbi
);
2368 unsigned int segno
, secno
, zoneno
;
2369 unsigned int total_zones
= MAIN_SECS(sbi
) / sbi
->secs_per_zone
;
2370 unsigned int hint
= GET_SEC_FROM_SEG(sbi
, *newseg
);
2371 unsigned int old_zoneno
= GET_ZONE_FROM_SEG(sbi
, *newseg
);
2372 unsigned int left_start
= hint
;
2377 spin_lock(&free_i
->segmap_lock
);
2379 if (!new_sec
&& ((*newseg
+ 1) % sbi
->segs_per_sec
)) {
2380 segno
= find_next_zero_bit(free_i
->free_segmap
,
2381 GET_SEG_FROM_SEC(sbi
, hint
+ 1), *newseg
+ 1);
2382 if (segno
< GET_SEG_FROM_SEC(sbi
, hint
+ 1))
2386 secno
= find_next_zero_bit(free_i
->free_secmap
, MAIN_SECS(sbi
), hint
);
2387 if (secno
>= MAIN_SECS(sbi
)) {
2388 if (dir
== ALLOC_RIGHT
) {
2389 secno
= find_next_zero_bit(free_i
->free_secmap
,
2391 f2fs_bug_on(sbi
, secno
>= MAIN_SECS(sbi
));
2394 left_start
= hint
- 1;
2400 while (test_bit(left_start
, free_i
->free_secmap
)) {
2401 if (left_start
> 0) {
2405 left_start
= find_next_zero_bit(free_i
->free_secmap
,
2407 f2fs_bug_on(sbi
, left_start
>= MAIN_SECS(sbi
));
2412 segno
= GET_SEG_FROM_SEC(sbi
, secno
);
2413 zoneno
= GET_ZONE_FROM_SEC(sbi
, secno
);
2415 /* give up on finding another zone */
2418 if (sbi
->secs_per_zone
== 1)
2420 if (zoneno
== old_zoneno
)
2422 if (dir
== ALLOC_LEFT
) {
2423 if (!go_left
&& zoneno
+ 1 >= total_zones
)
2425 if (go_left
&& zoneno
== 0)
2428 for (i
= 0; i
< NR_CURSEG_TYPE
; i
++)
2429 if (CURSEG_I(sbi
, i
)->zone
== zoneno
)
2432 if (i
< NR_CURSEG_TYPE
) {
2433 /* zone is in user, try another */
2435 hint
= zoneno
* sbi
->secs_per_zone
- 1;
2436 else if (zoneno
+ 1 >= total_zones
)
2439 hint
= (zoneno
+ 1) * sbi
->secs_per_zone
;
2441 goto find_other_zone
;
2444 /* set it as dirty segment in free segmap */
2445 f2fs_bug_on(sbi
, test_bit(segno
, free_i
->free_segmap
));
2446 __set_inuse(sbi
, segno
);
2448 spin_unlock(&free_i
->segmap_lock
);
2451 static void reset_curseg(struct f2fs_sb_info
*sbi
, int type
, int modified
)
2453 struct curseg_info
*curseg
= CURSEG_I(sbi
, type
);
2454 struct summary_footer
*sum_footer
;
2456 curseg
->segno
= curseg
->next_segno
;
2457 curseg
->zone
= GET_ZONE_FROM_SEG(sbi
, curseg
->segno
);
2458 curseg
->next_blkoff
= 0;
2459 curseg
->next_segno
= NULL_SEGNO
;
2461 sum_footer
= &(curseg
->sum_blk
->footer
);
2462 memset(sum_footer
, 0, sizeof(struct summary_footer
));
2463 if (IS_DATASEG(type
))
2464 SET_SUM_TYPE(sum_footer
, SUM_TYPE_DATA
);
2465 if (IS_NODESEG(type
))
2466 SET_SUM_TYPE(sum_footer
, SUM_TYPE_NODE
);
2467 __set_sit_entry_type(sbi
, type
, curseg
->segno
, modified
);
2470 static unsigned int __get_next_segno(struct f2fs_sb_info
*sbi
, int type
)
2472 /* if segs_per_sec is large than 1, we need to keep original policy. */
2473 if (__is_large_section(sbi
))
2474 return CURSEG_I(sbi
, type
)->segno
;
2476 if (unlikely(is_sbi_flag_set(sbi
, SBI_CP_DISABLED
)))
2479 if (test_opt(sbi
, NOHEAP
) &&
2480 (type
== CURSEG_HOT_DATA
|| IS_NODESEG(type
)))
2483 if (SIT_I(sbi
)->last_victim
[ALLOC_NEXT
])
2484 return SIT_I(sbi
)->last_victim
[ALLOC_NEXT
];
2486 /* find segments from 0 to reuse freed segments */
2487 if (F2FS_OPTION(sbi
).alloc_mode
== ALLOC_MODE_REUSE
)
2490 return CURSEG_I(sbi
, type
)->segno
;
2494 * Allocate a current working segment.
2495 * This function always allocates a free segment in LFS manner.
2497 static void new_curseg(struct f2fs_sb_info
*sbi
, int type
, bool new_sec
)
2499 struct curseg_info
*curseg
= CURSEG_I(sbi
, type
);
2500 unsigned int segno
= curseg
->segno
;
2501 int dir
= ALLOC_LEFT
;
2503 write_sum_page(sbi
, curseg
->sum_blk
,
2504 GET_SUM_BLOCK(sbi
, segno
));
2505 if (type
== CURSEG_WARM_DATA
|| type
== CURSEG_COLD_DATA
)
2508 if (test_opt(sbi
, NOHEAP
))
2511 segno
= __get_next_segno(sbi
, type
);
2512 get_new_segment(sbi
, &segno
, new_sec
, dir
);
2513 curseg
->next_segno
= segno
;
2514 reset_curseg(sbi
, type
, 1);
2515 curseg
->alloc_type
= LFS
;
2518 static void __next_free_blkoff(struct f2fs_sb_info
*sbi
,
2519 struct curseg_info
*seg
, block_t start
)
2521 struct seg_entry
*se
= get_seg_entry(sbi
, seg
->segno
);
2522 int entries
= SIT_VBLOCK_MAP_SIZE
/ sizeof(unsigned long);
2523 unsigned long *target_map
= SIT_I(sbi
)->tmp_map
;
2524 unsigned long *ckpt_map
= (unsigned long *)se
->ckpt_valid_map
;
2525 unsigned long *cur_map
= (unsigned long *)se
->cur_valid_map
;
2528 for (i
= 0; i
< entries
; i
++)
2529 target_map
[i
] = ckpt_map
[i
] | cur_map
[i
];
2531 pos
= __find_rev_next_zero_bit(target_map
, sbi
->blocks_per_seg
, start
);
2533 seg
->next_blkoff
= pos
;
2537 * If a segment is written by LFS manner, next block offset is just obtained
2538 * by increasing the current block offset. However, if a segment is written by
2539 * SSR manner, next block offset obtained by calling __next_free_blkoff
2541 static void __refresh_next_blkoff(struct f2fs_sb_info
*sbi
,
2542 struct curseg_info
*seg
)
2544 if (seg
->alloc_type
== SSR
)
2545 __next_free_blkoff(sbi
, seg
, seg
->next_blkoff
+ 1);
2551 * This function always allocates a used segment(from dirty seglist) by SSR
2552 * manner, so it should recover the existing segment information of valid blocks
2554 static void change_curseg(struct f2fs_sb_info
*sbi
, int type
)
2556 struct dirty_seglist_info
*dirty_i
= DIRTY_I(sbi
);
2557 struct curseg_info
*curseg
= CURSEG_I(sbi
, type
);
2558 unsigned int new_segno
= curseg
->next_segno
;
2559 struct f2fs_summary_block
*sum_node
;
2560 struct page
*sum_page
;
2562 write_sum_page(sbi
, curseg
->sum_blk
,
2563 GET_SUM_BLOCK(sbi
, curseg
->segno
));
2564 __set_test_and_inuse(sbi
, new_segno
);
2566 mutex_lock(&dirty_i
->seglist_lock
);
2567 __remove_dirty_segment(sbi
, new_segno
, PRE
);
2568 __remove_dirty_segment(sbi
, new_segno
, DIRTY
);
2569 mutex_unlock(&dirty_i
->seglist_lock
);
2571 reset_curseg(sbi
, type
, 1);
2572 curseg
->alloc_type
= SSR
;
2573 __next_free_blkoff(sbi
, curseg
, 0);
2575 sum_page
= f2fs_get_sum_page(sbi
, new_segno
);
2576 f2fs_bug_on(sbi
, IS_ERR(sum_page
));
2577 sum_node
= (struct f2fs_summary_block
*)page_address(sum_page
);
2578 memcpy(curseg
->sum_blk
, sum_node
, SUM_ENTRY_SIZE
);
2579 f2fs_put_page(sum_page
, 1);
2582 static int get_ssr_segment(struct f2fs_sb_info
*sbi
, int type
)
2584 struct curseg_info
*curseg
= CURSEG_I(sbi
, type
);
2585 const struct victim_selection
*v_ops
= DIRTY_I(sbi
)->v_ops
;
2586 unsigned segno
= NULL_SEGNO
;
2588 bool reversed
= false;
2590 /* f2fs_need_SSR() already forces to do this */
2591 if (v_ops
->get_victim(sbi
, &segno
, BG_GC
, type
, SSR
)) {
2592 curseg
->next_segno
= segno
;
2596 /* For node segments, let's do SSR more intensively */
2597 if (IS_NODESEG(type
)) {
2598 if (type
>= CURSEG_WARM_NODE
) {
2600 i
= CURSEG_COLD_NODE
;
2602 i
= CURSEG_HOT_NODE
;
2604 cnt
= NR_CURSEG_NODE_TYPE
;
2606 if (type
>= CURSEG_WARM_DATA
) {
2608 i
= CURSEG_COLD_DATA
;
2610 i
= CURSEG_HOT_DATA
;
2612 cnt
= NR_CURSEG_DATA_TYPE
;
2615 for (; cnt
-- > 0; reversed
? i
-- : i
++) {
2618 if (v_ops
->get_victim(sbi
, &segno
, BG_GC
, i
, SSR
)) {
2619 curseg
->next_segno
= segno
;
2624 /* find valid_blocks=0 in dirty list */
2625 if (unlikely(is_sbi_flag_set(sbi
, SBI_CP_DISABLED
))) {
2626 segno
= get_free_segment(sbi
);
2627 if (segno
!= NULL_SEGNO
) {
2628 curseg
->next_segno
= segno
;
2636 * flush out current segment and replace it with new segment
2637 * This function should be returned with success, otherwise BUG
2639 static void allocate_segment_by_default(struct f2fs_sb_info
*sbi
,
2640 int type
, bool force
)
2642 struct curseg_info
*curseg
= CURSEG_I(sbi
, type
);
2645 new_curseg(sbi
, type
, true);
2646 else if (!is_set_ckpt_flags(sbi
, CP_CRC_RECOVERY_FLAG
) &&
2647 type
== CURSEG_WARM_NODE
)
2648 new_curseg(sbi
, type
, false);
2649 else if (curseg
->alloc_type
== LFS
&& is_next_segment_free(sbi
, type
) &&
2650 likely(!is_sbi_flag_set(sbi
, SBI_CP_DISABLED
)))
2651 new_curseg(sbi
, type
, false);
2652 else if (f2fs_need_SSR(sbi
) && get_ssr_segment(sbi
, type
))
2653 change_curseg(sbi
, type
);
2655 new_curseg(sbi
, type
, false);
2657 stat_inc_seg_type(sbi
, curseg
);
2660 void allocate_segment_for_resize(struct f2fs_sb_info
*sbi
, int type
,
2661 unsigned int start
, unsigned int end
)
2663 struct curseg_info
*curseg
= CURSEG_I(sbi
, type
);
2666 down_read(&SM_I(sbi
)->curseg_lock
);
2667 mutex_lock(&curseg
->curseg_mutex
);
2668 down_write(&SIT_I(sbi
)->sentry_lock
);
2670 segno
= CURSEG_I(sbi
, type
)->segno
;
2671 if (segno
< start
|| segno
> end
)
2674 if (f2fs_need_SSR(sbi
) && get_ssr_segment(sbi
, type
))
2675 change_curseg(sbi
, type
);
2677 new_curseg(sbi
, type
, true);
2679 stat_inc_seg_type(sbi
, curseg
);
2681 locate_dirty_segment(sbi
, segno
);
2683 up_write(&SIT_I(sbi
)->sentry_lock
);
2685 if (segno
!= curseg
->segno
)
2686 f2fs_notice(sbi
, "For resize: curseg of type %d: %u ==> %u",
2687 type
, segno
, curseg
->segno
);
2689 mutex_unlock(&curseg
->curseg_mutex
);
2690 up_read(&SM_I(sbi
)->curseg_lock
);
2693 void f2fs_allocate_new_segments(struct f2fs_sb_info
*sbi
)
2695 struct curseg_info
*curseg
;
2696 unsigned int old_segno
;
2699 down_write(&SIT_I(sbi
)->sentry_lock
);
2701 for (i
= CURSEG_HOT_DATA
; i
<= CURSEG_COLD_DATA
; i
++) {
2702 curseg
= CURSEG_I(sbi
, i
);
2703 old_segno
= curseg
->segno
;
2704 SIT_I(sbi
)->s_ops
->allocate_segment(sbi
, i
, true);
2705 locate_dirty_segment(sbi
, old_segno
);
2708 up_write(&SIT_I(sbi
)->sentry_lock
);
2711 static const struct segment_allocation default_salloc_ops
= {
2712 .allocate_segment
= allocate_segment_by_default
,
2715 bool f2fs_exist_trim_candidates(struct f2fs_sb_info
*sbi
,
2716 struct cp_control
*cpc
)
2718 __u64 trim_start
= cpc
->trim_start
;
2719 bool has_candidate
= false;
2721 down_write(&SIT_I(sbi
)->sentry_lock
);
2722 for (; cpc
->trim_start
<= cpc
->trim_end
; cpc
->trim_start
++) {
2723 if (add_discard_addrs(sbi
, cpc
, true)) {
2724 has_candidate
= true;
2728 up_write(&SIT_I(sbi
)->sentry_lock
);
2730 cpc
->trim_start
= trim_start
;
2731 return has_candidate
;
2734 static unsigned int __issue_discard_cmd_range(struct f2fs_sb_info
*sbi
,
2735 struct discard_policy
*dpolicy
,
2736 unsigned int start
, unsigned int end
)
2738 struct discard_cmd_control
*dcc
= SM_I(sbi
)->dcc_info
;
2739 struct discard_cmd
*prev_dc
= NULL
, *next_dc
= NULL
;
2740 struct rb_node
**insert_p
= NULL
, *insert_parent
= NULL
;
2741 struct discard_cmd
*dc
;
2742 struct blk_plug plug
;
2744 unsigned int trimmed
= 0;
2749 mutex_lock(&dcc
->cmd_lock
);
2750 if (unlikely(dcc
->rbtree_check
))
2751 f2fs_bug_on(sbi
, !f2fs_check_rb_tree_consistence(sbi
,
2754 dc
= (struct discard_cmd
*)f2fs_lookup_rb_tree_ret(&dcc
->root
,
2756 (struct rb_entry
**)&prev_dc
,
2757 (struct rb_entry
**)&next_dc
,
2758 &insert_p
, &insert_parent
, true, NULL
);
2762 blk_start_plug(&plug
);
2764 while (dc
&& dc
->lstart
<= end
) {
2765 struct rb_node
*node
;
2768 if (dc
->len
< dpolicy
->granularity
)
2771 if (dc
->state
!= D_PREP
) {
2772 list_move_tail(&dc
->list
, &dcc
->fstrim_list
);
2776 err
= __submit_discard_cmd(sbi
, dpolicy
, dc
, &issued
);
2778 if (issued
>= dpolicy
->max_requests
) {
2779 start
= dc
->lstart
+ dc
->len
;
2782 __remove_discard_cmd(sbi
, dc
);
2784 blk_finish_plug(&plug
);
2785 mutex_unlock(&dcc
->cmd_lock
);
2786 trimmed
+= __wait_all_discard_cmd(sbi
, NULL
);
2787 congestion_wait(BLK_RW_ASYNC
, HZ
/50);
2791 node
= rb_next(&dc
->rb_node
);
2793 __remove_discard_cmd(sbi
, dc
);
2794 dc
= rb_entry_safe(node
, struct discard_cmd
, rb_node
);
2796 if (fatal_signal_pending(current
))
2800 blk_finish_plug(&plug
);
2801 mutex_unlock(&dcc
->cmd_lock
);
2806 int f2fs_trim_fs(struct f2fs_sb_info
*sbi
, struct fstrim_range
*range
)
2808 __u64 start
= F2FS_BYTES_TO_BLK(range
->start
);
2809 __u64 end
= start
+ F2FS_BYTES_TO_BLK(range
->len
) - 1;
2810 unsigned int start_segno
, end_segno
;
2811 block_t start_block
, end_block
;
2812 struct cp_control cpc
;
2813 struct discard_policy dpolicy
;
2814 unsigned long long trimmed
= 0;
2816 bool need_align
= test_opt(sbi
, LFS
) && __is_large_section(sbi
);
2818 if (start
>= MAX_BLKADDR(sbi
) || range
->len
< sbi
->blocksize
)
2821 if (end
< MAIN_BLKADDR(sbi
))
2824 if (is_sbi_flag_set(sbi
, SBI_NEED_FSCK
)) {
2825 f2fs_warn(sbi
, "Found FS corruption, run fsck to fix.");
2826 return -EFSCORRUPTED
;
2829 /* start/end segment number in main_area */
2830 start_segno
= (start
<= MAIN_BLKADDR(sbi
)) ? 0 : GET_SEGNO(sbi
, start
);
2831 end_segno
= (end
>= MAX_BLKADDR(sbi
)) ? MAIN_SEGS(sbi
) - 1 :
2832 GET_SEGNO(sbi
, end
);
2834 start_segno
= rounddown(start_segno
, sbi
->segs_per_sec
);
2835 end_segno
= roundup(end_segno
+ 1, sbi
->segs_per_sec
) - 1;
2838 cpc
.reason
= CP_DISCARD
;
2839 cpc
.trim_minlen
= max_t(__u64
, 1, F2FS_BYTES_TO_BLK(range
->minlen
));
2840 cpc
.trim_start
= start_segno
;
2841 cpc
.trim_end
= end_segno
;
2843 if (sbi
->discard_blks
== 0)
2846 mutex_lock(&sbi
->gc_mutex
);
2847 err
= f2fs_write_checkpoint(sbi
, &cpc
);
2848 mutex_unlock(&sbi
->gc_mutex
);
2853 * We filed discard candidates, but actually we don't need to wait for
2854 * all of them, since they'll be issued in idle time along with runtime
2855 * discard option. User configuration looks like using runtime discard
2856 * or periodic fstrim instead of it.
2858 if (f2fs_realtime_discard_enable(sbi
))
2861 start_block
= START_BLOCK(sbi
, start_segno
);
2862 end_block
= START_BLOCK(sbi
, end_segno
+ 1);
2864 __init_discard_policy(sbi
, &dpolicy
, DPOLICY_FSTRIM
, cpc
.trim_minlen
);
2865 trimmed
= __issue_discard_cmd_range(sbi
, &dpolicy
,
2866 start_block
, end_block
);
2868 trimmed
+= __wait_discard_cmd_range(sbi
, &dpolicy
,
2869 start_block
, end_block
);
2872 range
->len
= F2FS_BLK_TO_BYTES(trimmed
);
2876 static bool __has_curseg_space(struct f2fs_sb_info
*sbi
, int type
)
2878 struct curseg_info
*curseg
= CURSEG_I(sbi
, type
);
2879 if (curseg
->next_blkoff
< sbi
->blocks_per_seg
)
2884 int f2fs_rw_hint_to_seg_type(enum rw_hint hint
)
2887 case WRITE_LIFE_SHORT
:
2888 return CURSEG_HOT_DATA
;
2889 case WRITE_LIFE_EXTREME
:
2890 return CURSEG_COLD_DATA
;
2892 return CURSEG_WARM_DATA
;
2896 /* This returns write hints for each segment type. This hints will be
2897 * passed down to block layer. There are mapping tables which depend on
2898 * the mount option 'whint_mode'.
2900 * 1) whint_mode=off. F2FS only passes down WRITE_LIFE_NOT_SET.
2902 * 2) whint_mode=user-based. F2FS tries to pass down hints given by users.
2906 * META WRITE_LIFE_NOT_SET
2910 * ioctl(COLD) COLD_DATA WRITE_LIFE_EXTREME
2911 * extension list " "
2914 * WRITE_LIFE_EXTREME COLD_DATA WRITE_LIFE_EXTREME
2915 * WRITE_LIFE_SHORT HOT_DATA WRITE_LIFE_SHORT
2916 * WRITE_LIFE_NOT_SET WARM_DATA WRITE_LIFE_NOT_SET
2917 * WRITE_LIFE_NONE " "
2918 * WRITE_LIFE_MEDIUM " "
2919 * WRITE_LIFE_LONG " "
2922 * WRITE_LIFE_EXTREME COLD_DATA WRITE_LIFE_EXTREME
2923 * WRITE_LIFE_SHORT HOT_DATA WRITE_LIFE_SHORT
2924 * WRITE_LIFE_NOT_SET WARM_DATA WRITE_LIFE_NOT_SET
2925 * WRITE_LIFE_NONE " WRITE_LIFE_NONE
2926 * WRITE_LIFE_MEDIUM " WRITE_LIFE_MEDIUM
2927 * WRITE_LIFE_LONG " WRITE_LIFE_LONG
2929 * 3) whint_mode=fs-based. F2FS passes down hints with its policy.
2933 * META WRITE_LIFE_MEDIUM;
2934 * HOT_NODE WRITE_LIFE_NOT_SET
2936 * COLD_NODE WRITE_LIFE_NONE
2937 * ioctl(COLD) COLD_DATA WRITE_LIFE_EXTREME
2938 * extension list " "
2941 * WRITE_LIFE_EXTREME COLD_DATA WRITE_LIFE_EXTREME
2942 * WRITE_LIFE_SHORT HOT_DATA WRITE_LIFE_SHORT
2943 * WRITE_LIFE_NOT_SET WARM_DATA WRITE_LIFE_LONG
2944 * WRITE_LIFE_NONE " "
2945 * WRITE_LIFE_MEDIUM " "
2946 * WRITE_LIFE_LONG " "
2949 * WRITE_LIFE_EXTREME COLD_DATA WRITE_LIFE_EXTREME
2950 * WRITE_LIFE_SHORT HOT_DATA WRITE_LIFE_SHORT
2951 * WRITE_LIFE_NOT_SET WARM_DATA WRITE_LIFE_NOT_SET
2952 * WRITE_LIFE_NONE " WRITE_LIFE_NONE
2953 * WRITE_LIFE_MEDIUM " WRITE_LIFE_MEDIUM
2954 * WRITE_LIFE_LONG " WRITE_LIFE_LONG
2957 enum rw_hint
f2fs_io_type_to_rw_hint(struct f2fs_sb_info
*sbi
,
2958 enum page_type type
, enum temp_type temp
)
2960 if (F2FS_OPTION(sbi
).whint_mode
== WHINT_MODE_USER
) {
2963 return WRITE_LIFE_NOT_SET
;
2964 else if (temp
== HOT
)
2965 return WRITE_LIFE_SHORT
;
2966 else if (temp
== COLD
)
2967 return WRITE_LIFE_EXTREME
;
2969 return WRITE_LIFE_NOT_SET
;
2971 } else if (F2FS_OPTION(sbi
).whint_mode
== WHINT_MODE_FS
) {
2974 return WRITE_LIFE_LONG
;
2975 else if (temp
== HOT
)
2976 return WRITE_LIFE_SHORT
;
2977 else if (temp
== COLD
)
2978 return WRITE_LIFE_EXTREME
;
2979 } else if (type
== NODE
) {
2980 if (temp
== WARM
|| temp
== HOT
)
2981 return WRITE_LIFE_NOT_SET
;
2982 else if (temp
== COLD
)
2983 return WRITE_LIFE_NONE
;
2984 } else if (type
== META
) {
2985 return WRITE_LIFE_MEDIUM
;
2988 return WRITE_LIFE_NOT_SET
;
2991 static int __get_segment_type_2(struct f2fs_io_info
*fio
)
2993 if (fio
->type
== DATA
)
2994 return CURSEG_HOT_DATA
;
2996 return CURSEG_HOT_NODE
;
2999 static int __get_segment_type_4(struct f2fs_io_info
*fio
)
3001 if (fio
->type
== DATA
) {
3002 struct inode
*inode
= fio
->page
->mapping
->host
;
3004 if (S_ISDIR(inode
->i_mode
))
3005 return CURSEG_HOT_DATA
;
3007 return CURSEG_COLD_DATA
;
3009 if (IS_DNODE(fio
->page
) && is_cold_node(fio
->page
))
3010 return CURSEG_WARM_NODE
;
3012 return CURSEG_COLD_NODE
;
3016 static int __get_segment_type_6(struct f2fs_io_info
*fio
)
3018 if (fio
->type
== DATA
) {
3019 struct inode
*inode
= fio
->page
->mapping
->host
;
3021 if (is_cold_data(fio
->page
) || file_is_cold(inode
))
3022 return CURSEG_COLD_DATA
;
3023 if (file_is_hot(inode
) ||
3024 is_inode_flag_set(inode
, FI_HOT_DATA
) ||
3025 f2fs_is_atomic_file(inode
) ||
3026 f2fs_is_volatile_file(inode
))
3027 return CURSEG_HOT_DATA
;
3028 return f2fs_rw_hint_to_seg_type(inode
->i_write_hint
);
3030 if (IS_DNODE(fio
->page
))
3031 return is_cold_node(fio
->page
) ? CURSEG_WARM_NODE
:
3033 return CURSEG_COLD_NODE
;
3037 static int __get_segment_type(struct f2fs_io_info
*fio
)
3041 switch (F2FS_OPTION(fio
->sbi
).active_logs
) {
3043 type
= __get_segment_type_2(fio
);
3046 type
= __get_segment_type_4(fio
);
3049 type
= __get_segment_type_6(fio
);
3052 f2fs_bug_on(fio
->sbi
, true);
3057 else if (IS_WARM(type
))
3064 void f2fs_allocate_data_block(struct f2fs_sb_info
*sbi
, struct page
*page
,
3065 block_t old_blkaddr
, block_t
*new_blkaddr
,
3066 struct f2fs_summary
*sum
, int type
,
3067 struct f2fs_io_info
*fio
, bool add_list
)
3069 struct sit_info
*sit_i
= SIT_I(sbi
);
3070 struct curseg_info
*curseg
= CURSEG_I(sbi
, type
);
3072 down_read(&SM_I(sbi
)->curseg_lock
);
3074 mutex_lock(&curseg
->curseg_mutex
);
3075 down_write(&sit_i
->sentry_lock
);
3077 *new_blkaddr
= NEXT_FREE_BLKADDR(sbi
, curseg
);
3079 f2fs_wait_discard_bio(sbi
, *new_blkaddr
);
3082 * __add_sum_entry should be resided under the curseg_mutex
3083 * because, this function updates a summary entry in the
3084 * current summary block.
3086 __add_sum_entry(sbi
, type
, sum
);
3088 __refresh_next_blkoff(sbi
, curseg
);
3090 stat_inc_block_count(sbi
, curseg
);
3093 * SIT information should be updated before segment allocation,
3094 * since SSR needs latest valid block information.
3096 update_sit_entry(sbi
, *new_blkaddr
, 1);
3097 if (GET_SEGNO(sbi
, old_blkaddr
) != NULL_SEGNO
)
3098 update_sit_entry(sbi
, old_blkaddr
, -1);
3100 if (!__has_curseg_space(sbi
, type
))
3101 sit_i
->s_ops
->allocate_segment(sbi
, type
, false);
3104 * segment dirty status should be updated after segment allocation,
3105 * so we just need to update status only one time after previous
3106 * segment being closed.
3108 locate_dirty_segment(sbi
, GET_SEGNO(sbi
, old_blkaddr
));
3109 locate_dirty_segment(sbi
, GET_SEGNO(sbi
, *new_blkaddr
));
3111 up_write(&sit_i
->sentry_lock
);
3113 if (page
&& IS_NODESEG(type
)) {
3114 fill_node_footer_blkaddr(page
, NEXT_FREE_BLKADDR(sbi
, curseg
));
3116 f2fs_inode_chksum_set(sbi
, page
);
3120 struct f2fs_bio_info
*io
;
3122 INIT_LIST_HEAD(&fio
->list
);
3123 fio
->in_list
= true;
3125 io
= sbi
->write_io
[fio
->type
] + fio
->temp
;
3126 spin_lock(&io
->io_lock
);
3127 list_add_tail(&fio
->list
, &io
->io_list
);
3128 spin_unlock(&io
->io_lock
);
3131 mutex_unlock(&curseg
->curseg_mutex
);
3133 up_read(&SM_I(sbi
)->curseg_lock
);
3136 static void update_device_state(struct f2fs_io_info
*fio
)
3138 struct f2fs_sb_info
*sbi
= fio
->sbi
;
3139 unsigned int devidx
;
3141 if (!f2fs_is_multi_device(sbi
))
3144 devidx
= f2fs_target_device_index(sbi
, fio
->new_blkaddr
);
3146 /* update device state for fsync */
3147 f2fs_set_dirty_device(sbi
, fio
->ino
, devidx
, FLUSH_INO
);
3149 /* update device state for checkpoint */
3150 if (!f2fs_test_bit(devidx
, (char *)&sbi
->dirty_device
)) {
3151 spin_lock(&sbi
->dev_lock
);
3152 f2fs_set_bit(devidx
, (char *)&sbi
->dirty_device
);
3153 spin_unlock(&sbi
->dev_lock
);
3157 static void do_write_page(struct f2fs_summary
*sum
, struct f2fs_io_info
*fio
)
3159 int type
= __get_segment_type(fio
);
3160 bool keep_order
= (test_opt(fio
->sbi
, LFS
) && type
== CURSEG_COLD_DATA
);
3163 down_read(&fio
->sbi
->io_order_lock
);
3165 f2fs_allocate_data_block(fio
->sbi
, fio
->page
, fio
->old_blkaddr
,
3166 &fio
->new_blkaddr
, sum
, type
, fio
, true);
3167 if (GET_SEGNO(fio
->sbi
, fio
->old_blkaddr
) != NULL_SEGNO
)
3168 invalidate_mapping_pages(META_MAPPING(fio
->sbi
),
3169 fio
->old_blkaddr
, fio
->old_blkaddr
);
3171 /* writeout dirty page into bdev */
3172 f2fs_submit_page_write(fio
);
3174 fio
->old_blkaddr
= fio
->new_blkaddr
;
3178 update_device_state(fio
);
3181 up_read(&fio
->sbi
->io_order_lock
);
3184 void f2fs_do_write_meta_page(struct f2fs_sb_info
*sbi
, struct page
*page
,
3185 enum iostat_type io_type
)
3187 struct f2fs_io_info fio
= {
3192 .op_flags
= REQ_SYNC
| REQ_META
| REQ_PRIO
,
3193 .old_blkaddr
= page
->index
,
3194 .new_blkaddr
= page
->index
,
3196 .encrypted_page
= NULL
,
3200 if (unlikely(page
->index
>= MAIN_BLKADDR(sbi
)))
3201 fio
.op_flags
&= ~REQ_META
;
3203 set_page_writeback(page
);
3204 ClearPageError(page
);
3205 f2fs_submit_page_write(&fio
);
3207 stat_inc_meta_count(sbi
, page
->index
);
3208 f2fs_update_iostat(sbi
, io_type
, F2FS_BLKSIZE
);
3211 void f2fs_do_write_node_page(unsigned int nid
, struct f2fs_io_info
*fio
)
3213 struct f2fs_summary sum
;
3215 set_summary(&sum
, nid
, 0, 0);
3216 do_write_page(&sum
, fio
);
3218 f2fs_update_iostat(fio
->sbi
, fio
->io_type
, F2FS_BLKSIZE
);
3221 void f2fs_outplace_write_data(struct dnode_of_data
*dn
,
3222 struct f2fs_io_info
*fio
)
3224 struct f2fs_sb_info
*sbi
= fio
->sbi
;
3225 struct f2fs_summary sum
;
3227 f2fs_bug_on(sbi
, dn
->data_blkaddr
== NULL_ADDR
);
3228 set_summary(&sum
, dn
->nid
, dn
->ofs_in_node
, fio
->version
);
3229 do_write_page(&sum
, fio
);
3230 f2fs_update_data_blkaddr(dn
, fio
->new_blkaddr
);
3232 f2fs_update_iostat(sbi
, fio
->io_type
, F2FS_BLKSIZE
);
3235 int f2fs_inplace_write_data(struct f2fs_io_info
*fio
)
3238 struct f2fs_sb_info
*sbi
= fio
->sbi
;
3241 fio
->new_blkaddr
= fio
->old_blkaddr
;
3242 /* i/o temperature is needed for passing down write hints */
3243 __get_segment_type(fio
);
3245 segno
= GET_SEGNO(sbi
, fio
->new_blkaddr
);
3247 if (!IS_DATASEG(get_seg_entry(sbi
, segno
)->type
)) {
3248 set_sbi_flag(sbi
, SBI_NEED_FSCK
);
3249 f2fs_warn(sbi
, "%s: incorrect segment(%u) type, run fsck to fix.",
3251 return -EFSCORRUPTED
;
3254 stat_inc_inplace_blocks(fio
->sbi
);
3257 err
= f2fs_merge_page_bio(fio
);
3259 err
= f2fs_submit_page_bio(fio
);
3261 update_device_state(fio
);
3262 f2fs_update_iostat(fio
->sbi
, fio
->io_type
, F2FS_BLKSIZE
);
3268 static inline int __f2fs_get_curseg(struct f2fs_sb_info
*sbi
,
3273 for (i
= CURSEG_HOT_DATA
; i
< NO_CHECK_TYPE
; i
++) {
3274 if (CURSEG_I(sbi
, i
)->segno
== segno
)
3280 void f2fs_do_replace_block(struct f2fs_sb_info
*sbi
, struct f2fs_summary
*sum
,
3281 block_t old_blkaddr
, block_t new_blkaddr
,
3282 bool recover_curseg
, bool recover_newaddr
)
3284 struct sit_info
*sit_i
= SIT_I(sbi
);
3285 struct curseg_info
*curseg
;
3286 unsigned int segno
, old_cursegno
;
3287 struct seg_entry
*se
;
3289 unsigned short old_blkoff
;
3291 segno
= GET_SEGNO(sbi
, new_blkaddr
);
3292 se
= get_seg_entry(sbi
, segno
);
3295 down_write(&SM_I(sbi
)->curseg_lock
);
3297 if (!recover_curseg
) {
3298 /* for recovery flow */
3299 if (se
->valid_blocks
== 0 && !IS_CURSEG(sbi
, segno
)) {
3300 if (old_blkaddr
== NULL_ADDR
)
3301 type
= CURSEG_COLD_DATA
;
3303 type
= CURSEG_WARM_DATA
;
3306 if (IS_CURSEG(sbi
, segno
)) {
3307 /* se->type is volatile as SSR allocation */
3308 type
= __f2fs_get_curseg(sbi
, segno
);
3309 f2fs_bug_on(sbi
, type
== NO_CHECK_TYPE
);
3311 type
= CURSEG_WARM_DATA
;
3315 f2fs_bug_on(sbi
, !IS_DATASEG(type
));
3316 curseg
= CURSEG_I(sbi
, type
);
3318 mutex_lock(&curseg
->curseg_mutex
);
3319 down_write(&sit_i
->sentry_lock
);
3321 old_cursegno
= curseg
->segno
;
3322 old_blkoff
= curseg
->next_blkoff
;
3324 /* change the current segment */
3325 if (segno
!= curseg
->segno
) {
3326 curseg
->next_segno
= segno
;
3327 change_curseg(sbi
, type
);
3330 curseg
->next_blkoff
= GET_BLKOFF_FROM_SEG0(sbi
, new_blkaddr
);
3331 __add_sum_entry(sbi
, type
, sum
);
3333 if (!recover_curseg
|| recover_newaddr
)
3334 update_sit_entry(sbi
, new_blkaddr
, 1);
3335 if (GET_SEGNO(sbi
, old_blkaddr
) != NULL_SEGNO
) {
3336 invalidate_mapping_pages(META_MAPPING(sbi
),
3337 old_blkaddr
, old_blkaddr
);
3338 update_sit_entry(sbi
, old_blkaddr
, -1);
3341 locate_dirty_segment(sbi
, GET_SEGNO(sbi
, old_blkaddr
));
3342 locate_dirty_segment(sbi
, GET_SEGNO(sbi
, new_blkaddr
));
3344 locate_dirty_segment(sbi
, old_cursegno
);
3346 if (recover_curseg
) {
3347 if (old_cursegno
!= curseg
->segno
) {
3348 curseg
->next_segno
= old_cursegno
;
3349 change_curseg(sbi
, type
);
3351 curseg
->next_blkoff
= old_blkoff
;
3354 up_write(&sit_i
->sentry_lock
);
3355 mutex_unlock(&curseg
->curseg_mutex
);
3356 up_write(&SM_I(sbi
)->curseg_lock
);
3359 void f2fs_replace_block(struct f2fs_sb_info
*sbi
, struct dnode_of_data
*dn
,
3360 block_t old_addr
, block_t new_addr
,
3361 unsigned char version
, bool recover_curseg
,
3362 bool recover_newaddr
)
3364 struct f2fs_summary sum
;
3366 set_summary(&sum
, dn
->nid
, dn
->ofs_in_node
, version
);
3368 f2fs_do_replace_block(sbi
, &sum
, old_addr
, new_addr
,
3369 recover_curseg
, recover_newaddr
);
3371 f2fs_update_data_blkaddr(dn
, new_addr
);
3374 void f2fs_wait_on_page_writeback(struct page
*page
,
3375 enum page_type type
, bool ordered
, bool locked
)
3377 if (PageWriteback(page
)) {
3378 struct f2fs_sb_info
*sbi
= F2FS_P_SB(page
);
3380 f2fs_submit_merged_write_cond(sbi
, NULL
, page
, 0, type
);
3382 wait_on_page_writeback(page
);
3383 f2fs_bug_on(sbi
, locked
&& PageWriteback(page
));
3385 wait_for_stable_page(page
);
3390 void f2fs_wait_on_block_writeback(struct inode
*inode
, block_t blkaddr
)
3392 struct f2fs_sb_info
*sbi
= F2FS_I_SB(inode
);
3395 if (!f2fs_post_read_required(inode
))
3398 if (!__is_valid_data_blkaddr(blkaddr
))
3401 cpage
= find_lock_page(META_MAPPING(sbi
), blkaddr
);
3403 f2fs_wait_on_page_writeback(cpage
, DATA
, true, true);
3404 f2fs_put_page(cpage
, 1);
3408 void f2fs_wait_on_block_writeback_range(struct inode
*inode
, block_t blkaddr
,
3413 for (i
= 0; i
< len
; i
++)
3414 f2fs_wait_on_block_writeback(inode
, blkaddr
+ i
);
3417 static int read_compacted_summaries(struct f2fs_sb_info
*sbi
)
3419 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
3420 struct curseg_info
*seg_i
;
3421 unsigned char *kaddr
;
3426 start
= start_sum_block(sbi
);
3428 page
= f2fs_get_meta_page(sbi
, start
++);
3430 return PTR_ERR(page
);
3431 kaddr
= (unsigned char *)page_address(page
);
3433 /* Step 1: restore nat cache */
3434 seg_i
= CURSEG_I(sbi
, CURSEG_HOT_DATA
);
3435 memcpy(seg_i
->journal
, kaddr
, SUM_JOURNAL_SIZE
);
3437 /* Step 2: restore sit cache */
3438 seg_i
= CURSEG_I(sbi
, CURSEG_COLD_DATA
);
3439 memcpy(seg_i
->journal
, kaddr
+ SUM_JOURNAL_SIZE
, SUM_JOURNAL_SIZE
);
3440 offset
= 2 * SUM_JOURNAL_SIZE
;
3442 /* Step 3: restore summary entries */
3443 for (i
= CURSEG_HOT_DATA
; i
<= CURSEG_COLD_DATA
; i
++) {
3444 unsigned short blk_off
;
3447 seg_i
= CURSEG_I(sbi
, i
);
3448 segno
= le32_to_cpu(ckpt
->cur_data_segno
[i
]);
3449 blk_off
= le16_to_cpu(ckpt
->cur_data_blkoff
[i
]);
3450 if (blk_off
> ENTRIES_IN_SUM
) {
3451 f2fs_bug_on(sbi
, 1);
3452 f2fs_put_page(page
, 1);
3455 seg_i
->next_segno
= segno
;
3456 reset_curseg(sbi
, i
, 0);
3457 seg_i
->alloc_type
= ckpt
->alloc_type
[i
];
3458 seg_i
->next_blkoff
= blk_off
;
3460 if (seg_i
->alloc_type
== SSR
)
3461 blk_off
= sbi
->blocks_per_seg
;
3463 for (j
= 0; j
< blk_off
; j
++) {
3464 struct f2fs_summary
*s
;
3465 s
= (struct f2fs_summary
*)(kaddr
+ offset
);
3466 seg_i
->sum_blk
->entries
[j
] = *s
;
3467 offset
+= SUMMARY_SIZE
;
3468 if (offset
+ SUMMARY_SIZE
<= PAGE_SIZE
-
3472 f2fs_put_page(page
, 1);
3475 page
= f2fs_get_meta_page(sbi
, start
++);
3477 return PTR_ERR(page
);
3478 kaddr
= (unsigned char *)page_address(page
);
3482 f2fs_put_page(page
, 1);
3486 static int read_normal_summaries(struct f2fs_sb_info
*sbi
, int type
)
3488 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
3489 struct f2fs_summary_block
*sum
;
3490 struct curseg_info
*curseg
;
3492 unsigned short blk_off
;
3493 unsigned int segno
= 0;
3494 block_t blk_addr
= 0;
3497 /* get segment number and block addr */
3498 if (IS_DATASEG(type
)) {
3499 segno
= le32_to_cpu(ckpt
->cur_data_segno
[type
]);
3500 blk_off
= le16_to_cpu(ckpt
->cur_data_blkoff
[type
-
3502 if (__exist_node_summaries(sbi
))
3503 blk_addr
= sum_blk_addr(sbi
, NR_CURSEG_TYPE
, type
);
3505 blk_addr
= sum_blk_addr(sbi
, NR_CURSEG_DATA_TYPE
, type
);
3507 segno
= le32_to_cpu(ckpt
->cur_node_segno
[type
-
3509 blk_off
= le16_to_cpu(ckpt
->cur_node_blkoff
[type
-
3511 if (__exist_node_summaries(sbi
))
3512 blk_addr
= sum_blk_addr(sbi
, NR_CURSEG_NODE_TYPE
,
3513 type
- CURSEG_HOT_NODE
);
3515 blk_addr
= GET_SUM_BLOCK(sbi
, segno
);
3518 new = f2fs_get_meta_page(sbi
, blk_addr
);
3520 return PTR_ERR(new);
3521 sum
= (struct f2fs_summary_block
*)page_address(new);
3523 if (IS_NODESEG(type
)) {
3524 if (__exist_node_summaries(sbi
)) {
3525 struct f2fs_summary
*ns
= &sum
->entries
[0];
3527 for (i
= 0; i
< sbi
->blocks_per_seg
; i
++, ns
++) {
3529 ns
->ofs_in_node
= 0;
3532 err
= f2fs_restore_node_summary(sbi
, segno
, sum
);
3538 /* set uncompleted segment to curseg */
3539 curseg
= CURSEG_I(sbi
, type
);
3540 mutex_lock(&curseg
->curseg_mutex
);
3542 /* update journal info */
3543 down_write(&curseg
->journal_rwsem
);
3544 memcpy(curseg
->journal
, &sum
->journal
, SUM_JOURNAL_SIZE
);
3545 up_write(&curseg
->journal_rwsem
);
3547 memcpy(curseg
->sum_blk
->entries
, sum
->entries
, SUM_ENTRY_SIZE
);
3548 memcpy(&curseg
->sum_blk
->footer
, &sum
->footer
, SUM_FOOTER_SIZE
);
3549 curseg
->next_segno
= segno
;
3550 reset_curseg(sbi
, type
, 0);
3551 curseg
->alloc_type
= ckpt
->alloc_type
[type
];
3552 curseg
->next_blkoff
= blk_off
;
3553 mutex_unlock(&curseg
->curseg_mutex
);
3555 f2fs_put_page(new, 1);
3559 static int restore_curseg_summaries(struct f2fs_sb_info
*sbi
)
3561 struct f2fs_journal
*sit_j
= CURSEG_I(sbi
, CURSEG_COLD_DATA
)->journal
;
3562 struct f2fs_journal
*nat_j
= CURSEG_I(sbi
, CURSEG_HOT_DATA
)->journal
;
3563 int type
= CURSEG_HOT_DATA
;
3566 if (is_set_ckpt_flags(sbi
, CP_COMPACT_SUM_FLAG
)) {
3567 int npages
= f2fs_npages_for_summary_flush(sbi
, true);
3570 f2fs_ra_meta_pages(sbi
, start_sum_block(sbi
), npages
,
3573 /* restore for compacted data summary */
3574 err
= read_compacted_summaries(sbi
);
3577 type
= CURSEG_HOT_NODE
;
3580 if (__exist_node_summaries(sbi
))
3581 f2fs_ra_meta_pages(sbi
, sum_blk_addr(sbi
, NR_CURSEG_TYPE
, type
),
3582 NR_CURSEG_TYPE
- type
, META_CP
, true);
3584 for (; type
<= CURSEG_COLD_NODE
; type
++) {
3585 err
= read_normal_summaries(sbi
, type
);
3590 /* sanity check for summary blocks */
3591 if (nats_in_cursum(nat_j
) > NAT_JOURNAL_ENTRIES
||
3592 sits_in_cursum(sit_j
) > SIT_JOURNAL_ENTRIES
) {
3593 f2fs_err(sbi
, "invalid journal entries nats %u sits %u\n",
3594 nats_in_cursum(nat_j
), sits_in_cursum(sit_j
));
3601 static void write_compacted_summaries(struct f2fs_sb_info
*sbi
, block_t blkaddr
)
3604 unsigned char *kaddr
;
3605 struct f2fs_summary
*summary
;
3606 struct curseg_info
*seg_i
;
3607 int written_size
= 0;
3610 page
= f2fs_grab_meta_page(sbi
, blkaddr
++);
3611 kaddr
= (unsigned char *)page_address(page
);
3612 memset(kaddr
, 0, PAGE_SIZE
);
3614 /* Step 1: write nat cache */
3615 seg_i
= CURSEG_I(sbi
, CURSEG_HOT_DATA
);
3616 memcpy(kaddr
, seg_i
->journal
, SUM_JOURNAL_SIZE
);
3617 written_size
+= SUM_JOURNAL_SIZE
;
3619 /* Step 2: write sit cache */
3620 seg_i
= CURSEG_I(sbi
, CURSEG_COLD_DATA
);
3621 memcpy(kaddr
+ written_size
, seg_i
->journal
, SUM_JOURNAL_SIZE
);
3622 written_size
+= SUM_JOURNAL_SIZE
;
3624 /* Step 3: write summary entries */
3625 for (i
= CURSEG_HOT_DATA
; i
<= CURSEG_COLD_DATA
; i
++) {
3626 unsigned short blkoff
;
3627 seg_i
= CURSEG_I(sbi
, i
);
3628 if (sbi
->ckpt
->alloc_type
[i
] == SSR
)
3629 blkoff
= sbi
->blocks_per_seg
;
3631 blkoff
= curseg_blkoff(sbi
, i
);
3633 for (j
= 0; j
< blkoff
; j
++) {
3635 page
= f2fs_grab_meta_page(sbi
, blkaddr
++);
3636 kaddr
= (unsigned char *)page_address(page
);
3637 memset(kaddr
, 0, PAGE_SIZE
);
3640 summary
= (struct f2fs_summary
*)(kaddr
+ written_size
);
3641 *summary
= seg_i
->sum_blk
->entries
[j
];
3642 written_size
+= SUMMARY_SIZE
;
3644 if (written_size
+ SUMMARY_SIZE
<= PAGE_SIZE
-
3648 set_page_dirty(page
);
3649 f2fs_put_page(page
, 1);
3654 set_page_dirty(page
);
3655 f2fs_put_page(page
, 1);
3659 static void write_normal_summaries(struct f2fs_sb_info
*sbi
,
3660 block_t blkaddr
, int type
)
3663 if (IS_DATASEG(type
))
3664 end
= type
+ NR_CURSEG_DATA_TYPE
;
3666 end
= type
+ NR_CURSEG_NODE_TYPE
;
3668 for (i
= type
; i
< end
; i
++)
3669 write_current_sum_page(sbi
, i
, blkaddr
+ (i
- type
));
3672 void f2fs_write_data_summaries(struct f2fs_sb_info
*sbi
, block_t start_blk
)
3674 if (is_set_ckpt_flags(sbi
, CP_COMPACT_SUM_FLAG
))
3675 write_compacted_summaries(sbi
, start_blk
);
3677 write_normal_summaries(sbi
, start_blk
, CURSEG_HOT_DATA
);
3680 void f2fs_write_node_summaries(struct f2fs_sb_info
*sbi
, block_t start_blk
)
3682 write_normal_summaries(sbi
, start_blk
, CURSEG_HOT_NODE
);
3685 int f2fs_lookup_journal_in_cursum(struct f2fs_journal
*journal
, int type
,
3686 unsigned int val
, int alloc
)
3690 if (type
== NAT_JOURNAL
) {
3691 for (i
= 0; i
< nats_in_cursum(journal
); i
++) {
3692 if (le32_to_cpu(nid_in_journal(journal
, i
)) == val
)
3695 if (alloc
&& __has_cursum_space(journal
, 1, NAT_JOURNAL
))
3696 return update_nats_in_cursum(journal
, 1);
3697 } else if (type
== SIT_JOURNAL
) {
3698 for (i
= 0; i
< sits_in_cursum(journal
); i
++)
3699 if (le32_to_cpu(segno_in_journal(journal
, i
)) == val
)
3701 if (alloc
&& __has_cursum_space(journal
, 1, SIT_JOURNAL
))
3702 return update_sits_in_cursum(journal
, 1);
3707 static struct page
*get_current_sit_page(struct f2fs_sb_info
*sbi
,
3710 return f2fs_get_meta_page_nofail(sbi
, current_sit_addr(sbi
, segno
));
3713 static struct page
*get_next_sit_page(struct f2fs_sb_info
*sbi
,
3716 struct sit_info
*sit_i
= SIT_I(sbi
);
3718 pgoff_t src_off
, dst_off
;
3720 src_off
= current_sit_addr(sbi
, start
);
3721 dst_off
= next_sit_addr(sbi
, src_off
);
3723 page
= f2fs_grab_meta_page(sbi
, dst_off
);
3724 seg_info_to_sit_page(sbi
, page
, start
);
3726 set_page_dirty(page
);
3727 set_to_next_sit(sit_i
, start
);
3732 static struct sit_entry_set
*grab_sit_entry_set(void)
3734 struct sit_entry_set
*ses
=
3735 f2fs_kmem_cache_alloc(sit_entry_set_slab
, GFP_NOFS
);
3738 INIT_LIST_HEAD(&ses
->set_list
);
3742 static void release_sit_entry_set(struct sit_entry_set
*ses
)
3744 list_del(&ses
->set_list
);
3745 kmem_cache_free(sit_entry_set_slab
, ses
);
3748 static void adjust_sit_entry_set(struct sit_entry_set
*ses
,
3749 struct list_head
*head
)
3751 struct sit_entry_set
*next
= ses
;
3753 if (list_is_last(&ses
->set_list
, head
))
3756 list_for_each_entry_continue(next
, head
, set_list
)
3757 if (ses
->entry_cnt
<= next
->entry_cnt
)
3760 list_move_tail(&ses
->set_list
, &next
->set_list
);
3763 static void add_sit_entry(unsigned int segno
, struct list_head
*head
)
3765 struct sit_entry_set
*ses
;
3766 unsigned int start_segno
= START_SEGNO(segno
);
3768 list_for_each_entry(ses
, head
, set_list
) {
3769 if (ses
->start_segno
== start_segno
) {
3771 adjust_sit_entry_set(ses
, head
);
3776 ses
= grab_sit_entry_set();
3778 ses
->start_segno
= start_segno
;
3780 list_add(&ses
->set_list
, head
);
3783 static void add_sits_in_set(struct f2fs_sb_info
*sbi
)
3785 struct f2fs_sm_info
*sm_info
= SM_I(sbi
);
3786 struct list_head
*set_list
= &sm_info
->sit_entry_set
;
3787 unsigned long *bitmap
= SIT_I(sbi
)->dirty_sentries_bitmap
;
3790 for_each_set_bit(segno
, bitmap
, MAIN_SEGS(sbi
))
3791 add_sit_entry(segno
, set_list
);
3794 static void remove_sits_in_journal(struct f2fs_sb_info
*sbi
)
3796 struct curseg_info
*curseg
= CURSEG_I(sbi
, CURSEG_COLD_DATA
);
3797 struct f2fs_journal
*journal
= curseg
->journal
;
3800 down_write(&curseg
->journal_rwsem
);
3801 for (i
= 0; i
< sits_in_cursum(journal
); i
++) {
3805 segno
= le32_to_cpu(segno_in_journal(journal
, i
));
3806 dirtied
= __mark_sit_entry_dirty(sbi
, segno
);
3809 add_sit_entry(segno
, &SM_I(sbi
)->sit_entry_set
);
3811 update_sits_in_cursum(journal
, -i
);
3812 up_write(&curseg
->journal_rwsem
);
3816 * CP calls this function, which flushes SIT entries including sit_journal,
3817 * and moves prefree segs to free segs.
3819 void f2fs_flush_sit_entries(struct f2fs_sb_info
*sbi
, struct cp_control
*cpc
)
3821 struct sit_info
*sit_i
= SIT_I(sbi
);
3822 unsigned long *bitmap
= sit_i
->dirty_sentries_bitmap
;
3823 struct curseg_info
*curseg
= CURSEG_I(sbi
, CURSEG_COLD_DATA
);
3824 struct f2fs_journal
*journal
= curseg
->journal
;
3825 struct sit_entry_set
*ses
, *tmp
;
3826 struct list_head
*head
= &SM_I(sbi
)->sit_entry_set
;
3827 bool to_journal
= !is_sbi_flag_set(sbi
, SBI_IS_RESIZEFS
);
3828 struct seg_entry
*se
;
3830 down_write(&sit_i
->sentry_lock
);
3832 if (!sit_i
->dirty_sentries
)
3836 * add and account sit entries of dirty bitmap in sit entry
3839 add_sits_in_set(sbi
);
3842 * if there are no enough space in journal to store dirty sit
3843 * entries, remove all entries from journal and add and account
3844 * them in sit entry set.
3846 if (!__has_cursum_space(journal
, sit_i
->dirty_sentries
, SIT_JOURNAL
) ||
3848 remove_sits_in_journal(sbi
);
3851 * there are two steps to flush sit entries:
3852 * #1, flush sit entries to journal in current cold data summary block.
3853 * #2, flush sit entries to sit page.
3855 list_for_each_entry_safe(ses
, tmp
, head
, set_list
) {
3856 struct page
*page
= NULL
;
3857 struct f2fs_sit_block
*raw_sit
= NULL
;
3858 unsigned int start_segno
= ses
->start_segno
;
3859 unsigned int end
= min(start_segno
+ SIT_ENTRY_PER_BLOCK
,
3860 (unsigned long)MAIN_SEGS(sbi
));
3861 unsigned int segno
= start_segno
;
3864 !__has_cursum_space(journal
, ses
->entry_cnt
, SIT_JOURNAL
))
3868 down_write(&curseg
->journal_rwsem
);
3870 page
= get_next_sit_page(sbi
, start_segno
);
3871 raw_sit
= page_address(page
);
3874 /* flush dirty sit entries in region of current sit set */
3875 for_each_set_bit_from(segno
, bitmap
, end
) {
3876 int offset
, sit_offset
;
3878 se
= get_seg_entry(sbi
, segno
);
3879 #ifdef CONFIG_F2FS_CHECK_FS
3880 if (memcmp(se
->cur_valid_map
, se
->cur_valid_map_mir
,
3881 SIT_VBLOCK_MAP_SIZE
))
3882 f2fs_bug_on(sbi
, 1);
3885 /* add discard candidates */
3886 if (!(cpc
->reason
& CP_DISCARD
)) {
3887 cpc
->trim_start
= segno
;
3888 add_discard_addrs(sbi
, cpc
, false);
3892 offset
= f2fs_lookup_journal_in_cursum(journal
,
3893 SIT_JOURNAL
, segno
, 1);
3894 f2fs_bug_on(sbi
, offset
< 0);
3895 segno_in_journal(journal
, offset
) =
3897 seg_info_to_raw_sit(se
,
3898 &sit_in_journal(journal
, offset
));
3899 check_block_count(sbi
, segno
,
3900 &sit_in_journal(journal
, offset
));
3902 sit_offset
= SIT_ENTRY_OFFSET(sit_i
, segno
);
3903 seg_info_to_raw_sit(se
,
3904 &raw_sit
->entries
[sit_offset
]);
3905 check_block_count(sbi
, segno
,
3906 &raw_sit
->entries
[sit_offset
]);
3909 __clear_bit(segno
, bitmap
);
3910 sit_i
->dirty_sentries
--;
3915 up_write(&curseg
->journal_rwsem
);
3917 f2fs_put_page(page
, 1);
3919 f2fs_bug_on(sbi
, ses
->entry_cnt
);
3920 release_sit_entry_set(ses
);
3923 f2fs_bug_on(sbi
, !list_empty(head
));
3924 f2fs_bug_on(sbi
, sit_i
->dirty_sentries
);
3926 if (cpc
->reason
& CP_DISCARD
) {
3927 __u64 trim_start
= cpc
->trim_start
;
3929 for (; cpc
->trim_start
<= cpc
->trim_end
; cpc
->trim_start
++)
3930 add_discard_addrs(sbi
, cpc
, false);
3932 cpc
->trim_start
= trim_start
;
3934 up_write(&sit_i
->sentry_lock
);
3936 set_prefree_as_free_segments(sbi
);
3939 static int build_sit_info(struct f2fs_sb_info
*sbi
)
3941 struct f2fs_super_block
*raw_super
= F2FS_RAW_SUPER(sbi
);
3942 struct sit_info
*sit_i
;
3943 unsigned int sit_segs
, start
;
3945 unsigned int bitmap_size
;
3947 /* allocate memory for SIT information */
3948 sit_i
= f2fs_kzalloc(sbi
, sizeof(struct sit_info
), GFP_KERNEL
);
3952 SM_I(sbi
)->sit_info
= sit_i
;
3955 f2fs_kvzalloc(sbi
, array_size(sizeof(struct seg_entry
),
3958 if (!sit_i
->sentries
)
3961 bitmap_size
= f2fs_bitmap_size(MAIN_SEGS(sbi
));
3962 sit_i
->dirty_sentries_bitmap
= f2fs_kvzalloc(sbi
, bitmap_size
,
3964 if (!sit_i
->dirty_sentries_bitmap
)
3967 for (start
= 0; start
< MAIN_SEGS(sbi
); start
++) {
3968 sit_i
->sentries
[start
].cur_valid_map
3969 = f2fs_kzalloc(sbi
, SIT_VBLOCK_MAP_SIZE
, GFP_KERNEL
);
3970 sit_i
->sentries
[start
].ckpt_valid_map
3971 = f2fs_kzalloc(sbi
, SIT_VBLOCK_MAP_SIZE
, GFP_KERNEL
);
3972 if (!sit_i
->sentries
[start
].cur_valid_map
||
3973 !sit_i
->sentries
[start
].ckpt_valid_map
)
3976 #ifdef CONFIG_F2FS_CHECK_FS
3977 sit_i
->sentries
[start
].cur_valid_map_mir
3978 = f2fs_kzalloc(sbi
, SIT_VBLOCK_MAP_SIZE
, GFP_KERNEL
);
3979 if (!sit_i
->sentries
[start
].cur_valid_map_mir
)
3983 sit_i
->sentries
[start
].discard_map
3984 = f2fs_kzalloc(sbi
, SIT_VBLOCK_MAP_SIZE
,
3986 if (!sit_i
->sentries
[start
].discard_map
)
3990 sit_i
->tmp_map
= f2fs_kzalloc(sbi
, SIT_VBLOCK_MAP_SIZE
, GFP_KERNEL
);
3991 if (!sit_i
->tmp_map
)
3994 if (__is_large_section(sbi
)) {
3995 sit_i
->sec_entries
=
3996 f2fs_kvzalloc(sbi
, array_size(sizeof(struct sec_entry
),
3999 if (!sit_i
->sec_entries
)
4003 /* get information related with SIT */
4004 sit_segs
= le32_to_cpu(raw_super
->segment_count_sit
) >> 1;
4006 /* setup SIT bitmap from ckeckpoint pack */
4007 bitmap_size
= __bitmap_size(sbi
, SIT_BITMAP
);
4008 src_bitmap
= __bitmap_ptr(sbi
, SIT_BITMAP
);
4010 sit_i
->sit_bitmap
= kmemdup(src_bitmap
, bitmap_size
, GFP_KERNEL
);
4011 if (!sit_i
->sit_bitmap
)
4014 #ifdef CONFIG_F2FS_CHECK_FS
4015 sit_i
->sit_bitmap_mir
= kmemdup(src_bitmap
, bitmap_size
, GFP_KERNEL
);
4016 if (!sit_i
->sit_bitmap_mir
)
4020 /* init SIT information */
4021 sit_i
->s_ops
= &default_salloc_ops
;
4023 sit_i
->sit_base_addr
= le32_to_cpu(raw_super
->sit_blkaddr
);
4024 sit_i
->sit_blocks
= sit_segs
<< sbi
->log_blocks_per_seg
;
4025 sit_i
->written_valid_blocks
= 0;
4026 sit_i
->bitmap_size
= bitmap_size
;
4027 sit_i
->dirty_sentries
= 0;
4028 sit_i
->sents_per_block
= SIT_ENTRY_PER_BLOCK
;
4029 sit_i
->elapsed_time
= le64_to_cpu(sbi
->ckpt
->elapsed_time
);
4030 sit_i
->mounted_time
= ktime_get_real_seconds();
4031 init_rwsem(&sit_i
->sentry_lock
);
4035 static int build_free_segmap(struct f2fs_sb_info
*sbi
)
4037 struct free_segmap_info
*free_i
;
4038 unsigned int bitmap_size
, sec_bitmap_size
;
4040 /* allocate memory for free segmap information */
4041 free_i
= f2fs_kzalloc(sbi
, sizeof(struct free_segmap_info
), GFP_KERNEL
);
4045 SM_I(sbi
)->free_info
= free_i
;
4047 bitmap_size
= f2fs_bitmap_size(MAIN_SEGS(sbi
));
4048 free_i
->free_segmap
= f2fs_kvmalloc(sbi
, bitmap_size
, GFP_KERNEL
);
4049 if (!free_i
->free_segmap
)
4052 sec_bitmap_size
= f2fs_bitmap_size(MAIN_SECS(sbi
));
4053 free_i
->free_secmap
= f2fs_kvmalloc(sbi
, sec_bitmap_size
, GFP_KERNEL
);
4054 if (!free_i
->free_secmap
)
4057 /* set all segments as dirty temporarily */
4058 memset(free_i
->free_segmap
, 0xff, bitmap_size
);
4059 memset(free_i
->free_secmap
, 0xff, sec_bitmap_size
);
4061 /* init free segmap information */
4062 free_i
->start_segno
= GET_SEGNO_FROM_SEG0(sbi
, MAIN_BLKADDR(sbi
));
4063 free_i
->free_segments
= 0;
4064 free_i
->free_sections
= 0;
4065 spin_lock_init(&free_i
->segmap_lock
);
4069 static int build_curseg(struct f2fs_sb_info
*sbi
)
4071 struct curseg_info
*array
;
4074 array
= f2fs_kzalloc(sbi
, array_size(NR_CURSEG_TYPE
, sizeof(*array
)),
4079 SM_I(sbi
)->curseg_array
= array
;
4081 for (i
= 0; i
< NR_CURSEG_TYPE
; i
++) {
4082 mutex_init(&array
[i
].curseg_mutex
);
4083 array
[i
].sum_blk
= f2fs_kzalloc(sbi
, PAGE_SIZE
, GFP_KERNEL
);
4084 if (!array
[i
].sum_blk
)
4086 init_rwsem(&array
[i
].journal_rwsem
);
4087 array
[i
].journal
= f2fs_kzalloc(sbi
,
4088 sizeof(struct f2fs_journal
), GFP_KERNEL
);
4089 if (!array
[i
].journal
)
4091 array
[i
].segno
= NULL_SEGNO
;
4092 array
[i
].next_blkoff
= 0;
4094 return restore_curseg_summaries(sbi
);
4097 static int build_sit_entries(struct f2fs_sb_info
*sbi
)
4099 struct sit_info
*sit_i
= SIT_I(sbi
);
4100 struct curseg_info
*curseg
= CURSEG_I(sbi
, CURSEG_COLD_DATA
);
4101 struct f2fs_journal
*journal
= curseg
->journal
;
4102 struct seg_entry
*se
;
4103 struct f2fs_sit_entry sit
;
4104 int sit_blk_cnt
= SIT_BLK_CNT(sbi
);
4105 unsigned int i
, start
, end
;
4106 unsigned int readed
, start_blk
= 0;
4108 block_t total_node_blocks
= 0;
4111 readed
= f2fs_ra_meta_pages(sbi
, start_blk
, BIO_MAX_PAGES
,
4114 start
= start_blk
* sit_i
->sents_per_block
;
4115 end
= (start_blk
+ readed
) * sit_i
->sents_per_block
;
4117 for (; start
< end
&& start
< MAIN_SEGS(sbi
); start
++) {
4118 struct f2fs_sit_block
*sit_blk
;
4121 se
= &sit_i
->sentries
[start
];
4122 page
= get_current_sit_page(sbi
, start
);
4124 return PTR_ERR(page
);
4125 sit_blk
= (struct f2fs_sit_block
*)page_address(page
);
4126 sit
= sit_blk
->entries
[SIT_ENTRY_OFFSET(sit_i
, start
)];
4127 f2fs_put_page(page
, 1);
4129 err
= check_block_count(sbi
, start
, &sit
);
4132 seg_info_from_raw_sit(se
, &sit
);
4133 if (IS_NODESEG(se
->type
))
4134 total_node_blocks
+= se
->valid_blocks
;
4136 /* build discard map only one time */
4137 if (is_set_ckpt_flags(sbi
, CP_TRIMMED_FLAG
)) {
4138 memset(se
->discard_map
, 0xff,
4139 SIT_VBLOCK_MAP_SIZE
);
4141 memcpy(se
->discard_map
,
4143 SIT_VBLOCK_MAP_SIZE
);
4144 sbi
->discard_blks
+=
4145 sbi
->blocks_per_seg
-
4149 if (__is_large_section(sbi
))
4150 get_sec_entry(sbi
, start
)->valid_blocks
+=
4153 start_blk
+= readed
;
4154 } while (start_blk
< sit_blk_cnt
);
4156 down_read(&curseg
->journal_rwsem
);
4157 for (i
= 0; i
< sits_in_cursum(journal
); i
++) {
4158 unsigned int old_valid_blocks
;
4160 start
= le32_to_cpu(segno_in_journal(journal
, i
));
4161 if (start
>= MAIN_SEGS(sbi
)) {
4162 f2fs_err(sbi
, "Wrong journal entry on segno %u",
4164 set_sbi_flag(sbi
, SBI_NEED_FSCK
);
4165 err
= -EFSCORRUPTED
;
4169 se
= &sit_i
->sentries
[start
];
4170 sit
= sit_in_journal(journal
, i
);
4172 old_valid_blocks
= se
->valid_blocks
;
4173 if (IS_NODESEG(se
->type
))
4174 total_node_blocks
-= old_valid_blocks
;
4176 err
= check_block_count(sbi
, start
, &sit
);
4179 seg_info_from_raw_sit(se
, &sit
);
4180 if (IS_NODESEG(se
->type
))
4181 total_node_blocks
+= se
->valid_blocks
;
4183 if (is_set_ckpt_flags(sbi
, CP_TRIMMED_FLAG
)) {
4184 memset(se
->discard_map
, 0xff, SIT_VBLOCK_MAP_SIZE
);
4186 memcpy(se
->discard_map
, se
->cur_valid_map
,
4187 SIT_VBLOCK_MAP_SIZE
);
4188 sbi
->discard_blks
+= old_valid_blocks
;
4189 sbi
->discard_blks
-= se
->valid_blocks
;
4192 if (__is_large_section(sbi
)) {
4193 get_sec_entry(sbi
, start
)->valid_blocks
+=
4195 get_sec_entry(sbi
, start
)->valid_blocks
-=
4199 up_read(&curseg
->journal_rwsem
);
4201 if (!err
&& total_node_blocks
!= valid_node_count(sbi
)) {
4202 f2fs_err(sbi
, "SIT is corrupted node# %u vs %u",
4203 total_node_blocks
, valid_node_count(sbi
));
4204 set_sbi_flag(sbi
, SBI_NEED_FSCK
);
4205 err
= -EFSCORRUPTED
;
4211 static void init_free_segmap(struct f2fs_sb_info
*sbi
)
4216 for (start
= 0; start
< MAIN_SEGS(sbi
); start
++) {
4217 struct seg_entry
*sentry
= get_seg_entry(sbi
, start
);
4218 if (!sentry
->valid_blocks
)
4219 __set_free(sbi
, start
);
4221 SIT_I(sbi
)->written_valid_blocks
+=
4222 sentry
->valid_blocks
;
4225 /* set use the current segments */
4226 for (type
= CURSEG_HOT_DATA
; type
<= CURSEG_COLD_NODE
; type
++) {
4227 struct curseg_info
*curseg_t
= CURSEG_I(sbi
, type
);
4228 __set_test_and_inuse(sbi
, curseg_t
->segno
);
4232 static void init_dirty_segmap(struct f2fs_sb_info
*sbi
)
4234 struct dirty_seglist_info
*dirty_i
= DIRTY_I(sbi
);
4235 struct free_segmap_info
*free_i
= FREE_I(sbi
);
4236 unsigned int segno
= 0, offset
= 0;
4237 unsigned short valid_blocks
;
4240 /* find dirty segment based on free segmap */
4241 segno
= find_next_inuse(free_i
, MAIN_SEGS(sbi
), offset
);
4242 if (segno
>= MAIN_SEGS(sbi
))
4245 valid_blocks
= get_valid_blocks(sbi
, segno
, false);
4246 if (valid_blocks
== sbi
->blocks_per_seg
|| !valid_blocks
)
4248 if (valid_blocks
> sbi
->blocks_per_seg
) {
4249 f2fs_bug_on(sbi
, 1);
4252 mutex_lock(&dirty_i
->seglist_lock
);
4253 __locate_dirty_segment(sbi
, segno
, DIRTY
);
4254 mutex_unlock(&dirty_i
->seglist_lock
);
4258 static int init_victim_secmap(struct f2fs_sb_info
*sbi
)
4260 struct dirty_seglist_info
*dirty_i
= DIRTY_I(sbi
);
4261 unsigned int bitmap_size
= f2fs_bitmap_size(MAIN_SECS(sbi
));
4263 dirty_i
->victim_secmap
= f2fs_kvzalloc(sbi
, bitmap_size
, GFP_KERNEL
);
4264 if (!dirty_i
->victim_secmap
)
4269 static int build_dirty_segmap(struct f2fs_sb_info
*sbi
)
4271 struct dirty_seglist_info
*dirty_i
;
4272 unsigned int bitmap_size
, i
;
4274 /* allocate memory for dirty segments list information */
4275 dirty_i
= f2fs_kzalloc(sbi
, sizeof(struct dirty_seglist_info
),
4280 SM_I(sbi
)->dirty_info
= dirty_i
;
4281 mutex_init(&dirty_i
->seglist_lock
);
4283 bitmap_size
= f2fs_bitmap_size(MAIN_SEGS(sbi
));
4285 for (i
= 0; i
< NR_DIRTY_TYPE
; i
++) {
4286 dirty_i
->dirty_segmap
[i
] = f2fs_kvzalloc(sbi
, bitmap_size
,
4288 if (!dirty_i
->dirty_segmap
[i
])
4292 init_dirty_segmap(sbi
);
4293 return init_victim_secmap(sbi
);
4296 static int sanity_check_curseg(struct f2fs_sb_info
*sbi
)
4301 * In LFS/SSR curseg, .next_blkoff should point to an unused blkaddr;
4302 * In LFS curseg, all blkaddr after .next_blkoff should be unused.
4304 for (i
= 0; i
< NO_CHECK_TYPE
; i
++) {
4305 struct curseg_info
*curseg
= CURSEG_I(sbi
, i
);
4306 struct seg_entry
*se
= get_seg_entry(sbi
, curseg
->segno
);
4307 unsigned int blkofs
= curseg
->next_blkoff
;
4309 if (f2fs_test_bit(blkofs
, se
->cur_valid_map
))
4312 if (curseg
->alloc_type
== SSR
)
4315 for (blkofs
+= 1; blkofs
< sbi
->blocks_per_seg
; blkofs
++) {
4316 if (!f2fs_test_bit(blkofs
, se
->cur_valid_map
))
4320 "Current segment's next free block offset is inconsistent with bitmap, logtype:%u, segno:%u, type:%u, next_blkoff:%u, blkofs:%u",
4321 i
, curseg
->segno
, curseg
->alloc_type
,
4322 curseg
->next_blkoff
, blkofs
);
4323 return -EFSCORRUPTED
;
4330 * Update min, max modified time for cost-benefit GC algorithm
4332 static void init_min_max_mtime(struct f2fs_sb_info
*sbi
)
4334 struct sit_info
*sit_i
= SIT_I(sbi
);
4337 down_write(&sit_i
->sentry_lock
);
4339 sit_i
->min_mtime
= ULLONG_MAX
;
4341 for (segno
= 0; segno
< MAIN_SEGS(sbi
); segno
+= sbi
->segs_per_sec
) {
4343 unsigned long long mtime
= 0;
4345 for (i
= 0; i
< sbi
->segs_per_sec
; i
++)
4346 mtime
+= get_seg_entry(sbi
, segno
+ i
)->mtime
;
4348 mtime
= div_u64(mtime
, sbi
->segs_per_sec
);
4350 if (sit_i
->min_mtime
> mtime
)
4351 sit_i
->min_mtime
= mtime
;
4353 sit_i
->max_mtime
= get_mtime(sbi
, false);
4354 up_write(&sit_i
->sentry_lock
);
4357 int f2fs_build_segment_manager(struct f2fs_sb_info
*sbi
)
4359 struct f2fs_super_block
*raw_super
= F2FS_RAW_SUPER(sbi
);
4360 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
4361 struct f2fs_sm_info
*sm_info
;
4364 sm_info
= f2fs_kzalloc(sbi
, sizeof(struct f2fs_sm_info
), GFP_KERNEL
);
4369 sbi
->sm_info
= sm_info
;
4370 sm_info
->seg0_blkaddr
= le32_to_cpu(raw_super
->segment0_blkaddr
);
4371 sm_info
->main_blkaddr
= le32_to_cpu(raw_super
->main_blkaddr
);
4372 sm_info
->segment_count
= le32_to_cpu(raw_super
->segment_count
);
4373 sm_info
->reserved_segments
= le32_to_cpu(ckpt
->rsvd_segment_count
);
4374 sm_info
->ovp_segments
= le32_to_cpu(ckpt
->overprov_segment_count
);
4375 sm_info
->main_segments
= le32_to_cpu(raw_super
->segment_count_main
);
4376 sm_info
->ssa_blkaddr
= le32_to_cpu(raw_super
->ssa_blkaddr
);
4377 sm_info
->rec_prefree_segments
= sm_info
->main_segments
*
4378 DEF_RECLAIM_PREFREE_SEGMENTS
/ 100;
4379 if (sm_info
->rec_prefree_segments
> DEF_MAX_RECLAIM_PREFREE_SEGMENTS
)
4380 sm_info
->rec_prefree_segments
= DEF_MAX_RECLAIM_PREFREE_SEGMENTS
;
4382 if (!test_opt(sbi
, LFS
))
4383 sm_info
->ipu_policy
= 1 << F2FS_IPU_FSYNC
;
4384 sm_info
->min_ipu_util
= DEF_MIN_IPU_UTIL
;
4385 sm_info
->min_fsync_blocks
= DEF_MIN_FSYNC_BLOCKS
;
4386 sm_info
->min_seq_blocks
= sbi
->blocks_per_seg
* sbi
->segs_per_sec
;
4387 sm_info
->min_hot_blocks
= DEF_MIN_HOT_BLOCKS
;
4388 sm_info
->min_ssr_sections
= reserved_sections(sbi
);
4390 INIT_LIST_HEAD(&sm_info
->sit_entry_set
);
4392 init_rwsem(&sm_info
->curseg_lock
);
4394 if (!f2fs_readonly(sbi
->sb
)) {
4395 err
= f2fs_create_flush_cmd_control(sbi
);
4400 err
= create_discard_cmd_control(sbi
);
4404 err
= build_sit_info(sbi
);
4407 err
= build_free_segmap(sbi
);
4410 err
= build_curseg(sbi
);
4414 /* reinit free segmap based on SIT */
4415 err
= build_sit_entries(sbi
);
4419 init_free_segmap(sbi
);
4420 err
= build_dirty_segmap(sbi
);
4424 err
= sanity_check_curseg(sbi
);
4428 init_min_max_mtime(sbi
);
4432 static void discard_dirty_segmap(struct f2fs_sb_info
*sbi
,
4433 enum dirty_type dirty_type
)
4435 struct dirty_seglist_info
*dirty_i
= DIRTY_I(sbi
);
4437 mutex_lock(&dirty_i
->seglist_lock
);
4438 kvfree(dirty_i
->dirty_segmap
[dirty_type
]);
4439 dirty_i
->nr_dirty
[dirty_type
] = 0;
4440 mutex_unlock(&dirty_i
->seglist_lock
);
4443 static void destroy_victim_secmap(struct f2fs_sb_info
*sbi
)
4445 struct dirty_seglist_info
*dirty_i
= DIRTY_I(sbi
);
4446 kvfree(dirty_i
->victim_secmap
);
4449 static void destroy_dirty_segmap(struct f2fs_sb_info
*sbi
)
4451 struct dirty_seglist_info
*dirty_i
= DIRTY_I(sbi
);
4457 /* discard pre-free/dirty segments list */
4458 for (i
= 0; i
< NR_DIRTY_TYPE
; i
++)
4459 discard_dirty_segmap(sbi
, i
);
4461 destroy_victim_secmap(sbi
);
4462 SM_I(sbi
)->dirty_info
= NULL
;
4466 static void destroy_curseg(struct f2fs_sb_info
*sbi
)
4468 struct curseg_info
*array
= SM_I(sbi
)->curseg_array
;
4473 SM_I(sbi
)->curseg_array
= NULL
;
4474 for (i
= 0; i
< NR_CURSEG_TYPE
; i
++) {
4475 kvfree(array
[i
].sum_blk
);
4476 kvfree(array
[i
].journal
);
4481 static void destroy_free_segmap(struct f2fs_sb_info
*sbi
)
4483 struct free_segmap_info
*free_i
= SM_I(sbi
)->free_info
;
4486 SM_I(sbi
)->free_info
= NULL
;
4487 kvfree(free_i
->free_segmap
);
4488 kvfree(free_i
->free_secmap
);
4492 static void destroy_sit_info(struct f2fs_sb_info
*sbi
)
4494 struct sit_info
*sit_i
= SIT_I(sbi
);
4500 if (sit_i
->sentries
) {
4501 for (start
= 0; start
< MAIN_SEGS(sbi
); start
++) {
4502 kvfree(sit_i
->sentries
[start
].cur_valid_map
);
4503 #ifdef CONFIG_F2FS_CHECK_FS
4504 kvfree(sit_i
->sentries
[start
].cur_valid_map_mir
);
4506 kvfree(sit_i
->sentries
[start
].ckpt_valid_map
);
4507 kvfree(sit_i
->sentries
[start
].discard_map
);
4510 kvfree(sit_i
->tmp_map
);
4512 kvfree(sit_i
->sentries
);
4513 kvfree(sit_i
->sec_entries
);
4514 kvfree(sit_i
->dirty_sentries_bitmap
);
4516 SM_I(sbi
)->sit_info
= NULL
;
4517 kvfree(sit_i
->sit_bitmap
);
4518 #ifdef CONFIG_F2FS_CHECK_FS
4519 kvfree(sit_i
->sit_bitmap_mir
);
4524 void f2fs_destroy_segment_manager(struct f2fs_sb_info
*sbi
)
4526 struct f2fs_sm_info
*sm_info
= SM_I(sbi
);
4530 f2fs_destroy_flush_cmd_control(sbi
, true);
4531 destroy_discard_cmd_control(sbi
);
4532 destroy_dirty_segmap(sbi
);
4533 destroy_curseg(sbi
);
4534 destroy_free_segmap(sbi
);
4535 destroy_sit_info(sbi
);
4536 sbi
->sm_info
= NULL
;
4540 int __init
f2fs_create_segment_manager_caches(void)
4542 discard_entry_slab
= f2fs_kmem_cache_create("discard_entry",
4543 sizeof(struct discard_entry
));
4544 if (!discard_entry_slab
)
4547 discard_cmd_slab
= f2fs_kmem_cache_create("discard_cmd",
4548 sizeof(struct discard_cmd
));
4549 if (!discard_cmd_slab
)
4550 goto destroy_discard_entry
;
4552 sit_entry_set_slab
= f2fs_kmem_cache_create("sit_entry_set",
4553 sizeof(struct sit_entry_set
));
4554 if (!sit_entry_set_slab
)
4555 goto destroy_discard_cmd
;
4557 inmem_entry_slab
= f2fs_kmem_cache_create("inmem_page_entry",
4558 sizeof(struct inmem_pages
));
4559 if (!inmem_entry_slab
)
4560 goto destroy_sit_entry_set
;
4563 destroy_sit_entry_set
:
4564 kmem_cache_destroy(sit_entry_set_slab
);
4565 destroy_discard_cmd
:
4566 kmem_cache_destroy(discard_cmd_slab
);
4567 destroy_discard_entry
:
4568 kmem_cache_destroy(discard_entry_slab
);
4573 void f2fs_destroy_segment_manager_caches(void)
4575 kmem_cache_destroy(sit_entry_set_slab
);
4576 kmem_cache_destroy(discard_cmd_slab
);
4577 kmem_cache_destroy(discard_entry_slab
);
4578 kmem_cache_destroy(inmem_entry_slab
);