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8#include <linux/fs.h>
9#include <linux/bio.h>
10#include <linux/mpage.h>
11#include <linux/writeback.h>
12#include <linux/blkdev.h>
13#include <linux/f2fs_fs.h>
14#include <linux/pagevec.h>
15#include <linux/swap.h>
16#include <linux/kthread.h>
17
18#include "f2fs.h"
19#include "node.h"
20#include "segment.h"
21#include "iostat.h"
22#include <trace/events/f2fs.h>
23
24#define DEFAULT_CHECKPOINT_IOPRIO (IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE, 3))
25
26static struct kmem_cache *ino_entry_slab;
27struct kmem_cache *f2fs_inode_entry_slab;
28
29void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi, bool end_io)
30{
31 f2fs_build_fault_attr(sbi, 0, 0);
32 set_ckpt_flags(sbi, CP_ERROR_FLAG);
33 if (!end_io)
34 f2fs_flush_merged_writes(sbi);
35}
36
37
38
39
40struct page *f2fs_grab_meta_page(struct f2fs_sb_info *sbi, pgoff_t index)
41{
42 struct address_space *mapping = META_MAPPING(sbi);
43 struct page *page;
44repeat:
45 page = f2fs_grab_cache_page(mapping, index, false);
46 if (!page) {
47 cond_resched();
48 goto repeat;
49 }
50 f2fs_wait_on_page_writeback(page, META, true, true);
51 if (!PageUptodate(page))
52 SetPageUptodate(page);
53 return page;
54}
55
56static struct page *__get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index,
57 bool is_meta)
58{
59 struct address_space *mapping = META_MAPPING(sbi);
60 struct page *page;
61 struct f2fs_io_info fio = {
62 .sbi = sbi,
63 .type = META,
64 .op = REQ_OP_READ,
65 .op_flags = REQ_META | REQ_PRIO,
66 .old_blkaddr = index,
67 .new_blkaddr = index,
68 .encrypted_page = NULL,
69 .is_por = !is_meta,
70 };
71 int err;
72
73 if (unlikely(!is_meta))
74 fio.op_flags &= ~REQ_META;
75repeat:
76 page = f2fs_grab_cache_page(mapping, index, false);
77 if (!page) {
78 cond_resched();
79 goto repeat;
80 }
81 if (PageUptodate(page))
82 goto out;
83
84 fio.page = page;
85
86 err = f2fs_submit_page_bio(&fio);
87 if (err) {
88 f2fs_put_page(page, 1);
89 return ERR_PTR(err);
90 }
91
92 f2fs_update_iostat(sbi, FS_META_READ_IO, F2FS_BLKSIZE);
93
94 lock_page(page);
95 if (unlikely(page->mapping != mapping)) {
96 f2fs_put_page(page, 1);
97 goto repeat;
98 }
99
100 if (unlikely(!PageUptodate(page))) {
101 f2fs_put_page(page, 1);
102 return ERR_PTR(-EIO);
103 }
104out:
105 return page;
106}
107
108struct page *f2fs_get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index)
109{
110 return __get_meta_page(sbi, index, true);
111}
112
113struct page *f2fs_get_meta_page_retry(struct f2fs_sb_info *sbi, pgoff_t index)
114{
115 struct page *page;
116 int count = 0;
117
118retry:
119 page = __get_meta_page(sbi, index, true);
120 if (IS_ERR(page)) {
121 if (PTR_ERR(page) == -EIO &&
122 ++count <= DEFAULT_RETRY_IO_COUNT)
123 goto retry;
124 f2fs_stop_checkpoint(sbi, false);
125 }
126 return page;
127}
128
129
130struct page *f2fs_get_tmp_page(struct f2fs_sb_info *sbi, pgoff_t index)
131{
132 return __get_meta_page(sbi, index, false);
133}
134
135static bool __is_bitmap_valid(struct f2fs_sb_info *sbi, block_t blkaddr,
136 int type)
137{
138 struct seg_entry *se;
139 unsigned int segno, offset;
140 bool exist;
141
142 if (type != DATA_GENERIC_ENHANCE && type != DATA_GENERIC_ENHANCE_READ)
143 return true;
144
145 segno = GET_SEGNO(sbi, blkaddr);
146 offset = GET_BLKOFF_FROM_SEG0(sbi, blkaddr);
147 se = get_seg_entry(sbi, segno);
148
149 exist = f2fs_test_bit(offset, se->cur_valid_map);
150 if (!exist && type == DATA_GENERIC_ENHANCE) {
151 f2fs_err(sbi, "Inconsistent error blkaddr:%u, sit bitmap:%d",
152 blkaddr, exist);
153 set_sbi_flag(sbi, SBI_NEED_FSCK);
154 WARN_ON(1);
155 }
156 return exist;
157}
158
159bool f2fs_is_valid_blkaddr(struct f2fs_sb_info *sbi,
160 block_t blkaddr, int type)
161{
162 switch (type) {
163 case META_NAT:
164 break;
165 case META_SIT:
166 if (unlikely(blkaddr >= SIT_BLK_CNT(sbi)))
167 return false;
168 break;
169 case META_SSA:
170 if (unlikely(blkaddr >= MAIN_BLKADDR(sbi) ||
171 blkaddr < SM_I(sbi)->ssa_blkaddr))
172 return false;
173 break;
174 case META_CP:
175 if (unlikely(blkaddr >= SIT_I(sbi)->sit_base_addr ||
176 blkaddr < __start_cp_addr(sbi)))
177 return false;
178 break;
179 case META_POR:
180 if (unlikely(blkaddr >= MAX_BLKADDR(sbi) ||
181 blkaddr < MAIN_BLKADDR(sbi)))
182 return false;
183 break;
184 case DATA_GENERIC:
185 case DATA_GENERIC_ENHANCE:
186 case DATA_GENERIC_ENHANCE_READ:
187 if (unlikely(blkaddr >= MAX_BLKADDR(sbi) ||
188 blkaddr < MAIN_BLKADDR(sbi))) {
189 f2fs_warn(sbi, "access invalid blkaddr:%u",
190 blkaddr);
191 set_sbi_flag(sbi, SBI_NEED_FSCK);
192 WARN_ON(1);
193 return false;
194 } else {
195 return __is_bitmap_valid(sbi, blkaddr, type);
196 }
197 break;
198 case META_GENERIC:
199 if (unlikely(blkaddr < SEG0_BLKADDR(sbi) ||
200 blkaddr >= MAIN_BLKADDR(sbi)))
201 return false;
202 break;
203 default:
204 BUG();
205 }
206
207 return true;
208}
209
210
211
212
213int f2fs_ra_meta_pages(struct f2fs_sb_info *sbi, block_t start, int nrpages,
214 int type, bool sync)
215{
216 struct page *page;
217 block_t blkno = start;
218 struct f2fs_io_info fio = {
219 .sbi = sbi,
220 .type = META,
221 .op = REQ_OP_READ,
222 .op_flags = sync ? (REQ_META | REQ_PRIO) : REQ_RAHEAD,
223 .encrypted_page = NULL,
224 .in_list = false,
225 .is_por = (type == META_POR),
226 };
227 struct blk_plug plug;
228 int err;
229
230 if (unlikely(type == META_POR))
231 fio.op_flags &= ~REQ_META;
232
233 blk_start_plug(&plug);
234 for (; nrpages-- > 0; blkno++) {
235
236 if (!f2fs_is_valid_blkaddr(sbi, blkno, type))
237 goto out;
238
239 switch (type) {
240 case META_NAT:
241 if (unlikely(blkno >=
242 NAT_BLOCK_OFFSET(NM_I(sbi)->max_nid)))
243 blkno = 0;
244
245 fio.new_blkaddr = current_nat_addr(sbi,
246 blkno * NAT_ENTRY_PER_BLOCK);
247 break;
248 case META_SIT:
249 if (unlikely(blkno >= TOTAL_SEGS(sbi)))
250 goto out;
251
252 fio.new_blkaddr = current_sit_addr(sbi,
253 blkno * SIT_ENTRY_PER_BLOCK);
254 break;
255 case META_SSA:
256 case META_CP:
257 case META_POR:
258 fio.new_blkaddr = blkno;
259 break;
260 default:
261 BUG();
262 }
263
264 page = f2fs_grab_cache_page(META_MAPPING(sbi),
265 fio.new_blkaddr, false);
266 if (!page)
267 continue;
268 if (PageUptodate(page)) {
269 f2fs_put_page(page, 1);
270 continue;
271 }
272
273 fio.page = page;
274 err = f2fs_submit_page_bio(&fio);
275 f2fs_put_page(page, err ? 1 : 0);
276
277 if (!err)
278 f2fs_update_iostat(sbi, FS_META_READ_IO, F2FS_BLKSIZE);
279 }
280out:
281 blk_finish_plug(&plug);
282 return blkno - start;
283}
284
285void f2fs_ra_meta_pages_cond(struct f2fs_sb_info *sbi, pgoff_t index)
286{
287 struct page *page;
288 bool readahead = false;
289
290 page = find_get_page(META_MAPPING(sbi), index);
291 if (!page || !PageUptodate(page))
292 readahead = true;
293 f2fs_put_page(page, 0);
294
295 if (readahead)
296 f2fs_ra_meta_pages(sbi, index, BIO_MAX_VECS, META_POR, true);
297}
298
299static int __f2fs_write_meta_page(struct page *page,
300 struct writeback_control *wbc,
301 enum iostat_type io_type)
302{
303 struct f2fs_sb_info *sbi = F2FS_P_SB(page);
304
305 trace_f2fs_writepage(page, META);
306
307 if (unlikely(f2fs_cp_error(sbi)))
308 goto redirty_out;
309 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
310 goto redirty_out;
311 if (wbc->for_reclaim && page->index < GET_SUM_BLOCK(sbi, 0))
312 goto redirty_out;
313
314 f2fs_do_write_meta_page(sbi, page, io_type);
315 dec_page_count(sbi, F2FS_DIRTY_META);
316
317 if (wbc->for_reclaim)
318 f2fs_submit_merged_write_cond(sbi, NULL, page, 0, META);
319
320 unlock_page(page);
321
322 if (unlikely(f2fs_cp_error(sbi)))
323 f2fs_submit_merged_write(sbi, META);
324
325 return 0;
326
327redirty_out:
328 redirty_page_for_writepage(wbc, page);
329 return AOP_WRITEPAGE_ACTIVATE;
330}
331
332static int f2fs_write_meta_page(struct page *page,
333 struct writeback_control *wbc)
334{
335 return __f2fs_write_meta_page(page, wbc, FS_META_IO);
336}
337
338static int f2fs_write_meta_pages(struct address_space *mapping,
339 struct writeback_control *wbc)
340{
341 struct f2fs_sb_info *sbi = F2FS_M_SB(mapping);
342 long diff, written;
343
344 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
345 goto skip_write;
346
347
348 if (wbc->sync_mode != WB_SYNC_ALL &&
349 get_pages(sbi, F2FS_DIRTY_META) <
350 nr_pages_to_skip(sbi, META))
351 goto skip_write;
352
353
354 if (!down_write_trylock(&sbi->cp_global_sem))
355 goto skip_write;
356
357 trace_f2fs_writepages(mapping->host, wbc, META);
358 diff = nr_pages_to_write(sbi, META, wbc);
359 written = f2fs_sync_meta_pages(sbi, META, wbc->nr_to_write, FS_META_IO);
360 up_write(&sbi->cp_global_sem);
361 wbc->nr_to_write = max((long)0, wbc->nr_to_write - written - diff);
362 return 0;
363
364skip_write:
365 wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_META);
366 trace_f2fs_writepages(mapping->host, wbc, META);
367 return 0;
368}
369
370long f2fs_sync_meta_pages(struct f2fs_sb_info *sbi, enum page_type type,
371 long nr_to_write, enum iostat_type io_type)
372{
373 struct address_space *mapping = META_MAPPING(sbi);
374 pgoff_t index = 0, prev = ULONG_MAX;
375 struct pagevec pvec;
376 long nwritten = 0;
377 int nr_pages;
378 struct writeback_control wbc = {
379 .for_reclaim = 0,
380 };
381 struct blk_plug plug;
382
383 pagevec_init(&pvec);
384
385 blk_start_plug(&plug);
386
387 while ((nr_pages = pagevec_lookup_tag(&pvec, mapping, &index,
388 PAGECACHE_TAG_DIRTY))) {
389 int i;
390
391 for (i = 0; i < nr_pages; i++) {
392 struct page *page = pvec.pages[i];
393
394 if (prev == ULONG_MAX)
395 prev = page->index - 1;
396 if (nr_to_write != LONG_MAX && page->index != prev + 1) {
397 pagevec_release(&pvec);
398 goto stop;
399 }
400
401 lock_page(page);
402
403 if (unlikely(page->mapping != mapping)) {
404continue_unlock:
405 unlock_page(page);
406 continue;
407 }
408 if (!PageDirty(page)) {
409
410 goto continue_unlock;
411 }
412
413 f2fs_wait_on_page_writeback(page, META, true, true);
414
415 if (!clear_page_dirty_for_io(page))
416 goto continue_unlock;
417
418 if (__f2fs_write_meta_page(page, &wbc, io_type)) {
419 unlock_page(page);
420 break;
421 }
422 nwritten++;
423 prev = page->index;
424 if (unlikely(nwritten >= nr_to_write))
425 break;
426 }
427 pagevec_release(&pvec);
428 cond_resched();
429 }
430stop:
431 if (nwritten)
432 f2fs_submit_merged_write(sbi, type);
433
434 blk_finish_plug(&plug);
435
436 return nwritten;
437}
438
439static int f2fs_set_meta_page_dirty(struct page *page)
440{
441 trace_f2fs_set_page_dirty(page, META);
442
443 if (!PageUptodate(page))
444 SetPageUptodate(page);
445 if (!PageDirty(page)) {
446 __set_page_dirty_nobuffers(page);
447 inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_META);
448 set_page_private_reference(page);
449 return 1;
450 }
451 return 0;
452}
453
454const struct address_space_operations f2fs_meta_aops = {
455 .writepage = f2fs_write_meta_page,
456 .writepages = f2fs_write_meta_pages,
457 .set_page_dirty = f2fs_set_meta_page_dirty,
458 .invalidatepage = f2fs_invalidate_page,
459 .releasepage = f2fs_release_page,
460#ifdef CONFIG_MIGRATION
461 .migratepage = f2fs_migrate_page,
462#endif
463};
464
465static void __add_ino_entry(struct f2fs_sb_info *sbi, nid_t ino,
466 unsigned int devidx, int type)
467{
468 struct inode_management *im = &sbi->im[type];
469 struct ino_entry *e = NULL, *new = NULL;
470
471 if (type == FLUSH_INO) {
472 rcu_read_lock();
473 e = radix_tree_lookup(&im->ino_root, ino);
474 rcu_read_unlock();
475 }
476
477retry:
478 if (!e)
479 new = f2fs_kmem_cache_alloc(ino_entry_slab,
480 GFP_NOFS, true, NULL);
481
482 radix_tree_preload(GFP_NOFS | __GFP_NOFAIL);
483
484 spin_lock(&im->ino_lock);
485 e = radix_tree_lookup(&im->ino_root, ino);
486 if (!e) {
487 if (!new) {
488 spin_unlock(&im->ino_lock);
489 goto retry;
490 }
491 e = new;
492 if (unlikely(radix_tree_insert(&im->ino_root, ino, e)))
493 f2fs_bug_on(sbi, 1);
494
495 memset(e, 0, sizeof(struct ino_entry));
496 e->ino = ino;
497
498 list_add_tail(&e->list, &im->ino_list);
499 if (type != ORPHAN_INO)
500 im->ino_num++;
501 }
502
503 if (type == FLUSH_INO)
504 f2fs_set_bit(devidx, (char *)&e->dirty_device);
505
506 spin_unlock(&im->ino_lock);
507 radix_tree_preload_end();
508
509 if (new && e != new)
510 kmem_cache_free(ino_entry_slab, new);
511}
512
513static void __remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type)
514{
515 struct inode_management *im = &sbi->im[type];
516 struct ino_entry *e;
517
518 spin_lock(&im->ino_lock);
519 e = radix_tree_lookup(&im->ino_root, ino);
520 if (e) {
521 list_del(&e->list);
522 radix_tree_delete(&im->ino_root, ino);
523 im->ino_num--;
524 spin_unlock(&im->ino_lock);
525 kmem_cache_free(ino_entry_slab, e);
526 return;
527 }
528 spin_unlock(&im->ino_lock);
529}
530
531void f2fs_add_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type)
532{
533
534 __add_ino_entry(sbi, ino, 0, type);
535}
536
537void f2fs_remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type)
538{
539
540 __remove_ino_entry(sbi, ino, type);
541}
542
543
544bool f2fs_exist_written_data(struct f2fs_sb_info *sbi, nid_t ino, int mode)
545{
546 struct inode_management *im = &sbi->im[mode];
547 struct ino_entry *e;
548
549 spin_lock(&im->ino_lock);
550 e = radix_tree_lookup(&im->ino_root, ino);
551 spin_unlock(&im->ino_lock);
552 return e ? true : false;
553}
554
555void f2fs_release_ino_entry(struct f2fs_sb_info *sbi, bool all)
556{
557 struct ino_entry *e, *tmp;
558 int i;
559
560 for (i = all ? ORPHAN_INO : APPEND_INO; i < MAX_INO_ENTRY; i++) {
561 struct inode_management *im = &sbi->im[i];
562
563 spin_lock(&im->ino_lock);
564 list_for_each_entry_safe(e, tmp, &im->ino_list, list) {
565 list_del(&e->list);
566 radix_tree_delete(&im->ino_root, e->ino);
567 kmem_cache_free(ino_entry_slab, e);
568 im->ino_num--;
569 }
570 spin_unlock(&im->ino_lock);
571 }
572}
573
574void f2fs_set_dirty_device(struct f2fs_sb_info *sbi, nid_t ino,
575 unsigned int devidx, int type)
576{
577 __add_ino_entry(sbi, ino, devidx, type);
578}
579
580bool f2fs_is_dirty_device(struct f2fs_sb_info *sbi, nid_t ino,
581 unsigned int devidx, int type)
582{
583 struct inode_management *im = &sbi->im[type];
584 struct ino_entry *e;
585 bool is_dirty = false;
586
587 spin_lock(&im->ino_lock);
588 e = radix_tree_lookup(&im->ino_root, ino);
589 if (e && f2fs_test_bit(devidx, (char *)&e->dirty_device))
590 is_dirty = true;
591 spin_unlock(&im->ino_lock);
592 return is_dirty;
593}
594
595int f2fs_acquire_orphan_inode(struct f2fs_sb_info *sbi)
596{
597 struct inode_management *im = &sbi->im[ORPHAN_INO];
598 int err = 0;
599
600 spin_lock(&im->ino_lock);
601
602 if (time_to_inject(sbi, FAULT_ORPHAN)) {
603 spin_unlock(&im->ino_lock);
604 f2fs_show_injection_info(sbi, FAULT_ORPHAN);
605 return -ENOSPC;
606 }
607
608 if (unlikely(im->ino_num >= sbi->max_orphans))
609 err = -ENOSPC;
610 else
611 im->ino_num++;
612 spin_unlock(&im->ino_lock);
613
614 return err;
615}
616
617void f2fs_release_orphan_inode(struct f2fs_sb_info *sbi)
618{
619 struct inode_management *im = &sbi->im[ORPHAN_INO];
620
621 spin_lock(&im->ino_lock);
622 f2fs_bug_on(sbi, im->ino_num == 0);
623 im->ino_num--;
624 spin_unlock(&im->ino_lock);
625}
626
627void f2fs_add_orphan_inode(struct inode *inode)
628{
629
630 __add_ino_entry(F2FS_I_SB(inode), inode->i_ino, 0, ORPHAN_INO);
631 f2fs_update_inode_page(inode);
632}
633
634void f2fs_remove_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino)
635{
636
637 __remove_ino_entry(sbi, ino, ORPHAN_INO);
638}
639
640static int recover_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino)
641{
642 struct inode *inode;
643 struct node_info ni;
644 int err;
645
646 inode = f2fs_iget_retry(sbi->sb, ino);
647 if (IS_ERR(inode)) {
648
649
650
651
652 f2fs_bug_on(sbi, PTR_ERR(inode) == -ENOENT);
653 return PTR_ERR(inode);
654 }
655
656 err = dquot_initialize(inode);
657 if (err) {
658 iput(inode);
659 goto err_out;
660 }
661
662 clear_nlink(inode);
663
664
665 iput(inode);
666
667 err = f2fs_get_node_info(sbi, ino, &ni);
668 if (err)
669 goto err_out;
670
671
672 if (ni.blk_addr != NULL_ADDR) {
673 err = -EIO;
674 goto err_out;
675 }
676 return 0;
677
678err_out:
679 set_sbi_flag(sbi, SBI_NEED_FSCK);
680 f2fs_warn(sbi, "%s: orphan failed (ino=%x), run fsck to fix.",
681 __func__, ino);
682 return err;
683}
684
685int f2fs_recover_orphan_inodes(struct f2fs_sb_info *sbi)
686{
687 block_t start_blk, orphan_blocks, i, j;
688 unsigned int s_flags = sbi->sb->s_flags;
689 int err = 0;
690#ifdef CONFIG_QUOTA
691 int quota_enabled;
692#endif
693
694 if (!is_set_ckpt_flags(sbi, CP_ORPHAN_PRESENT_FLAG))
695 return 0;
696
697 if (bdev_read_only(sbi->sb->s_bdev)) {
698 f2fs_info(sbi, "write access unavailable, skipping orphan cleanup");
699 return 0;
700 }
701
702 if (s_flags & SB_RDONLY) {
703 f2fs_info(sbi, "orphan cleanup on readonly fs");
704 sbi->sb->s_flags &= ~SB_RDONLY;
705 }
706
707#ifdef CONFIG_QUOTA
708
709 sbi->sb->s_flags |= SB_ACTIVE;
710
711
712
713
714
715 quota_enabled = f2fs_enable_quota_files(sbi, s_flags & SB_RDONLY);
716#endif
717
718 start_blk = __start_cp_addr(sbi) + 1 + __cp_payload(sbi);
719 orphan_blocks = __start_sum_addr(sbi) - 1 - __cp_payload(sbi);
720
721 f2fs_ra_meta_pages(sbi, start_blk, orphan_blocks, META_CP, true);
722
723 for (i = 0; i < orphan_blocks; i++) {
724 struct page *page;
725 struct f2fs_orphan_block *orphan_blk;
726
727 page = f2fs_get_meta_page(sbi, start_blk + i);
728 if (IS_ERR(page)) {
729 err = PTR_ERR(page);
730 goto out;
731 }
732
733 orphan_blk = (struct f2fs_orphan_block *)page_address(page);
734 for (j = 0; j < le32_to_cpu(orphan_blk->entry_count); j++) {
735 nid_t ino = le32_to_cpu(orphan_blk->ino[j]);
736
737 err = recover_orphan_inode(sbi, ino);
738 if (err) {
739 f2fs_put_page(page, 1);
740 goto out;
741 }
742 }
743 f2fs_put_page(page, 1);
744 }
745
746 clear_ckpt_flags(sbi, CP_ORPHAN_PRESENT_FLAG);
747out:
748 set_sbi_flag(sbi, SBI_IS_RECOVERED);
749
750#ifdef CONFIG_QUOTA
751
752 if (quota_enabled)
753 f2fs_quota_off_umount(sbi->sb);
754#endif
755 sbi->sb->s_flags = s_flags;
756
757 return err;
758}
759
760static void write_orphan_inodes(struct f2fs_sb_info *sbi, block_t start_blk)
761{
762 struct list_head *head;
763 struct f2fs_orphan_block *orphan_blk = NULL;
764 unsigned int nentries = 0;
765 unsigned short index = 1;
766 unsigned short orphan_blocks;
767 struct page *page = NULL;
768 struct ino_entry *orphan = NULL;
769 struct inode_management *im = &sbi->im[ORPHAN_INO];
770
771 orphan_blocks = GET_ORPHAN_BLOCKS(im->ino_num);
772
773
774
775
776
777
778 head = &im->ino_list;
779
780
781 list_for_each_entry(orphan, head, list) {
782 if (!page) {
783 page = f2fs_grab_meta_page(sbi, start_blk++);
784 orphan_blk =
785 (struct f2fs_orphan_block *)page_address(page);
786 memset(orphan_blk, 0, sizeof(*orphan_blk));
787 }
788
789 orphan_blk->ino[nentries++] = cpu_to_le32(orphan->ino);
790
791 if (nentries == F2FS_ORPHANS_PER_BLOCK) {
792
793
794
795
796
797 orphan_blk->blk_addr = cpu_to_le16(index);
798 orphan_blk->blk_count = cpu_to_le16(orphan_blocks);
799 orphan_blk->entry_count = cpu_to_le32(nentries);
800 set_page_dirty(page);
801 f2fs_put_page(page, 1);
802 index++;
803 nentries = 0;
804 page = NULL;
805 }
806 }
807
808 if (page) {
809 orphan_blk->blk_addr = cpu_to_le16(index);
810 orphan_blk->blk_count = cpu_to_le16(orphan_blocks);
811 orphan_blk->entry_count = cpu_to_le32(nentries);
812 set_page_dirty(page);
813 f2fs_put_page(page, 1);
814 }
815}
816
817static __u32 f2fs_checkpoint_chksum(struct f2fs_sb_info *sbi,
818 struct f2fs_checkpoint *ckpt)
819{
820 unsigned int chksum_ofs = le32_to_cpu(ckpt->checksum_offset);
821 __u32 chksum;
822
823 chksum = f2fs_crc32(sbi, ckpt, chksum_ofs);
824 if (chksum_ofs < CP_CHKSUM_OFFSET) {
825 chksum_ofs += sizeof(chksum);
826 chksum = f2fs_chksum(sbi, chksum, (__u8 *)ckpt + chksum_ofs,
827 F2FS_BLKSIZE - chksum_ofs);
828 }
829 return chksum;
830}
831
832static int get_checkpoint_version(struct f2fs_sb_info *sbi, block_t cp_addr,
833 struct f2fs_checkpoint **cp_block, struct page **cp_page,
834 unsigned long long *version)
835{
836 size_t crc_offset = 0;
837 __u32 crc;
838
839 *cp_page = f2fs_get_meta_page(sbi, cp_addr);
840 if (IS_ERR(*cp_page))
841 return PTR_ERR(*cp_page);
842
843 *cp_block = (struct f2fs_checkpoint *)page_address(*cp_page);
844
845 crc_offset = le32_to_cpu((*cp_block)->checksum_offset);
846 if (crc_offset < CP_MIN_CHKSUM_OFFSET ||
847 crc_offset > CP_CHKSUM_OFFSET) {
848 f2fs_put_page(*cp_page, 1);
849 f2fs_warn(sbi, "invalid crc_offset: %zu", crc_offset);
850 return -EINVAL;
851 }
852
853 crc = f2fs_checkpoint_chksum(sbi, *cp_block);
854 if (crc != cur_cp_crc(*cp_block)) {
855 f2fs_put_page(*cp_page, 1);
856 f2fs_warn(sbi, "invalid crc value");
857 return -EINVAL;
858 }
859
860 *version = cur_cp_version(*cp_block);
861 return 0;
862}
863
864static struct page *validate_checkpoint(struct f2fs_sb_info *sbi,
865 block_t cp_addr, unsigned long long *version)
866{
867 struct page *cp_page_1 = NULL, *cp_page_2 = NULL;
868 struct f2fs_checkpoint *cp_block = NULL;
869 unsigned long long cur_version = 0, pre_version = 0;
870 int err;
871
872 err = get_checkpoint_version(sbi, cp_addr, &cp_block,
873 &cp_page_1, version);
874 if (err)
875 return NULL;
876
877 if (le32_to_cpu(cp_block->cp_pack_total_block_count) >
878 sbi->blocks_per_seg) {
879 f2fs_warn(sbi, "invalid cp_pack_total_block_count:%u",
880 le32_to_cpu(cp_block->cp_pack_total_block_count));
881 goto invalid_cp;
882 }
883 pre_version = *version;
884
885 cp_addr += le32_to_cpu(cp_block->cp_pack_total_block_count) - 1;
886 err = get_checkpoint_version(sbi, cp_addr, &cp_block,
887 &cp_page_2, version);
888 if (err)
889 goto invalid_cp;
890 cur_version = *version;
891
892 if (cur_version == pre_version) {
893 *version = cur_version;
894 f2fs_put_page(cp_page_2, 1);
895 return cp_page_1;
896 }
897 f2fs_put_page(cp_page_2, 1);
898invalid_cp:
899 f2fs_put_page(cp_page_1, 1);
900 return NULL;
901}
902
903int f2fs_get_valid_checkpoint(struct f2fs_sb_info *sbi)
904{
905 struct f2fs_checkpoint *cp_block;
906 struct f2fs_super_block *fsb = sbi->raw_super;
907 struct page *cp1, *cp2, *cur_page;
908 unsigned long blk_size = sbi->blocksize;
909 unsigned long long cp1_version = 0, cp2_version = 0;
910 unsigned long long cp_start_blk_no;
911 unsigned int cp_blks = 1 + __cp_payload(sbi);
912 block_t cp_blk_no;
913 int i;
914 int err;
915
916 sbi->ckpt = f2fs_kvzalloc(sbi, array_size(blk_size, cp_blks),
917 GFP_KERNEL);
918 if (!sbi->ckpt)
919 return -ENOMEM;
920
921
922
923
924 cp_start_blk_no = le32_to_cpu(fsb->cp_blkaddr);
925 cp1 = validate_checkpoint(sbi, cp_start_blk_no, &cp1_version);
926
927
928 cp_start_blk_no += ((unsigned long long)1) <<
929 le32_to_cpu(fsb->log_blocks_per_seg);
930 cp2 = validate_checkpoint(sbi, cp_start_blk_no, &cp2_version);
931
932 if (cp1 && cp2) {
933 if (ver_after(cp2_version, cp1_version))
934 cur_page = cp2;
935 else
936 cur_page = cp1;
937 } else if (cp1) {
938 cur_page = cp1;
939 } else if (cp2) {
940 cur_page = cp2;
941 } else {
942 err = -EFSCORRUPTED;
943 goto fail_no_cp;
944 }
945
946 cp_block = (struct f2fs_checkpoint *)page_address(cur_page);
947 memcpy(sbi->ckpt, cp_block, blk_size);
948
949 if (cur_page == cp1)
950 sbi->cur_cp_pack = 1;
951 else
952 sbi->cur_cp_pack = 2;
953
954
955 if (f2fs_sanity_check_ckpt(sbi)) {
956 err = -EFSCORRUPTED;
957 goto free_fail_no_cp;
958 }
959
960 if (cp_blks <= 1)
961 goto done;
962
963 cp_blk_no = le32_to_cpu(fsb->cp_blkaddr);
964 if (cur_page == cp2)
965 cp_blk_no += 1 << le32_to_cpu(fsb->log_blocks_per_seg);
966
967 for (i = 1; i < cp_blks; i++) {
968 void *sit_bitmap_ptr;
969 unsigned char *ckpt = (unsigned char *)sbi->ckpt;
970
971 cur_page = f2fs_get_meta_page(sbi, cp_blk_no + i);
972 if (IS_ERR(cur_page)) {
973 err = PTR_ERR(cur_page);
974 goto free_fail_no_cp;
975 }
976 sit_bitmap_ptr = page_address(cur_page);
977 memcpy(ckpt + i * blk_size, sit_bitmap_ptr, blk_size);
978 f2fs_put_page(cur_page, 1);
979 }
980done:
981 f2fs_put_page(cp1, 1);
982 f2fs_put_page(cp2, 1);
983 return 0;
984
985free_fail_no_cp:
986 f2fs_put_page(cp1, 1);
987 f2fs_put_page(cp2, 1);
988fail_no_cp:
989 kvfree(sbi->ckpt);
990 return err;
991}
992
993static void __add_dirty_inode(struct inode *inode, enum inode_type type)
994{
995 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
996 int flag = (type == DIR_INODE) ? FI_DIRTY_DIR : FI_DIRTY_FILE;
997
998 if (is_inode_flag_set(inode, flag))
999 return;
1000
1001 set_inode_flag(inode, flag);
1002 if (!f2fs_is_volatile_file(inode))
1003 list_add_tail(&F2FS_I(inode)->dirty_list,
1004 &sbi->inode_list[type]);
1005 stat_inc_dirty_inode(sbi, type);
1006}
1007
1008static void __remove_dirty_inode(struct inode *inode, enum inode_type type)
1009{
1010 int flag = (type == DIR_INODE) ? FI_DIRTY_DIR : FI_DIRTY_FILE;
1011
1012 if (get_dirty_pages(inode) || !is_inode_flag_set(inode, flag))
1013 return;
1014
1015 list_del_init(&F2FS_I(inode)->dirty_list);
1016 clear_inode_flag(inode, flag);
1017 stat_dec_dirty_inode(F2FS_I_SB(inode), type);
1018}
1019
1020void f2fs_update_dirty_page(struct inode *inode, struct page *page)
1021{
1022 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1023 enum inode_type type = S_ISDIR(inode->i_mode) ? DIR_INODE : FILE_INODE;
1024
1025 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&
1026 !S_ISLNK(inode->i_mode))
1027 return;
1028
1029 spin_lock(&sbi->inode_lock[type]);
1030 if (type != FILE_INODE || test_opt(sbi, DATA_FLUSH))
1031 __add_dirty_inode(inode, type);
1032 inode_inc_dirty_pages(inode);
1033 spin_unlock(&sbi->inode_lock[type]);
1034
1035 set_page_private_reference(page);
1036}
1037
1038void f2fs_remove_dirty_inode(struct inode *inode)
1039{
1040 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1041 enum inode_type type = S_ISDIR(inode->i_mode) ? DIR_INODE : FILE_INODE;
1042
1043 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&
1044 !S_ISLNK(inode->i_mode))
1045 return;
1046
1047 if (type == FILE_INODE && !test_opt(sbi, DATA_FLUSH))
1048 return;
1049
1050 spin_lock(&sbi->inode_lock[type]);
1051 __remove_dirty_inode(inode, type);
1052 spin_unlock(&sbi->inode_lock[type]);
1053}
1054
1055int f2fs_sync_dirty_inodes(struct f2fs_sb_info *sbi, enum inode_type type)
1056{
1057 struct list_head *head;
1058 struct inode *inode;
1059 struct f2fs_inode_info *fi;
1060 bool is_dir = (type == DIR_INODE);
1061 unsigned long ino = 0;
1062
1063 trace_f2fs_sync_dirty_inodes_enter(sbi->sb, is_dir,
1064 get_pages(sbi, is_dir ?
1065 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA));
1066retry:
1067 if (unlikely(f2fs_cp_error(sbi))) {
1068 trace_f2fs_sync_dirty_inodes_exit(sbi->sb, is_dir,
1069 get_pages(sbi, is_dir ?
1070 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA));
1071 return -EIO;
1072 }
1073
1074 spin_lock(&sbi->inode_lock[type]);
1075
1076 head = &sbi->inode_list[type];
1077 if (list_empty(head)) {
1078 spin_unlock(&sbi->inode_lock[type]);
1079 trace_f2fs_sync_dirty_inodes_exit(sbi->sb, is_dir,
1080 get_pages(sbi, is_dir ?
1081 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA));
1082 return 0;
1083 }
1084 fi = list_first_entry(head, struct f2fs_inode_info, dirty_list);
1085 inode = igrab(&fi->vfs_inode);
1086 spin_unlock(&sbi->inode_lock[type]);
1087 if (inode) {
1088 unsigned long cur_ino = inode->i_ino;
1089
1090 F2FS_I(inode)->cp_task = current;
1091
1092 filemap_fdatawrite(inode->i_mapping);
1093
1094 F2FS_I(inode)->cp_task = NULL;
1095
1096 iput(inode);
1097
1098 if (ino == cur_ino)
1099 cond_resched();
1100 else
1101 ino = cur_ino;
1102 } else {
1103
1104
1105
1106
1107 f2fs_submit_merged_write(sbi, DATA);
1108 cond_resched();
1109 }
1110 goto retry;
1111}
1112
1113int f2fs_sync_inode_meta(struct f2fs_sb_info *sbi)
1114{
1115 struct list_head *head = &sbi->inode_list[DIRTY_META];
1116 struct inode *inode;
1117 struct f2fs_inode_info *fi;
1118 s64 total = get_pages(sbi, F2FS_DIRTY_IMETA);
1119
1120 while (total--) {
1121 if (unlikely(f2fs_cp_error(sbi)))
1122 return -EIO;
1123
1124 spin_lock(&sbi->inode_lock[DIRTY_META]);
1125 if (list_empty(head)) {
1126 spin_unlock(&sbi->inode_lock[DIRTY_META]);
1127 return 0;
1128 }
1129 fi = list_first_entry(head, struct f2fs_inode_info,
1130 gdirty_list);
1131 inode = igrab(&fi->vfs_inode);
1132 spin_unlock(&sbi->inode_lock[DIRTY_META]);
1133 if (inode) {
1134 sync_inode_metadata(inode, 0);
1135
1136
1137 if (is_inode_flag_set(inode, FI_DIRTY_INODE))
1138 f2fs_update_inode_page(inode);
1139 iput(inode);
1140 }
1141 }
1142 return 0;
1143}
1144
1145static void __prepare_cp_block(struct f2fs_sb_info *sbi)
1146{
1147 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1148 struct f2fs_nm_info *nm_i = NM_I(sbi);
1149 nid_t last_nid = nm_i->next_scan_nid;
1150
1151 next_free_nid(sbi, &last_nid);
1152 ckpt->valid_block_count = cpu_to_le64(valid_user_blocks(sbi));
1153 ckpt->valid_node_count = cpu_to_le32(valid_node_count(sbi));
1154 ckpt->valid_inode_count = cpu_to_le32(valid_inode_count(sbi));
1155 ckpt->next_free_nid = cpu_to_le32(last_nid);
1156}
1157
1158static bool __need_flush_quota(struct f2fs_sb_info *sbi)
1159{
1160 bool ret = false;
1161
1162 if (!is_journalled_quota(sbi))
1163 return false;
1164
1165 down_write(&sbi->quota_sem);
1166 if (is_sbi_flag_set(sbi, SBI_QUOTA_SKIP_FLUSH)) {
1167 ret = false;
1168 } else if (is_sbi_flag_set(sbi, SBI_QUOTA_NEED_REPAIR)) {
1169 ret = false;
1170 } else if (is_sbi_flag_set(sbi, SBI_QUOTA_NEED_FLUSH)) {
1171 clear_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH);
1172 ret = true;
1173 } else if (get_pages(sbi, F2FS_DIRTY_QDATA)) {
1174 ret = true;
1175 }
1176 up_write(&sbi->quota_sem);
1177 return ret;
1178}
1179
1180
1181
1182
1183static int block_operations(struct f2fs_sb_info *sbi)
1184{
1185 struct writeback_control wbc = {
1186 .sync_mode = WB_SYNC_ALL,
1187 .nr_to_write = LONG_MAX,
1188 .for_reclaim = 0,
1189 };
1190 int err = 0, cnt = 0;
1191
1192
1193
1194
1195 f2fs_flush_inline_data(sbi);
1196
1197retry_flush_quotas:
1198 f2fs_lock_all(sbi);
1199 if (__need_flush_quota(sbi)) {
1200 int locked;
1201
1202 if (++cnt > DEFAULT_RETRY_QUOTA_FLUSH_COUNT) {
1203 set_sbi_flag(sbi, SBI_QUOTA_SKIP_FLUSH);
1204 set_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH);
1205 goto retry_flush_dents;
1206 }
1207 f2fs_unlock_all(sbi);
1208
1209
1210 locked = down_read_trylock(&sbi->sb->s_umount);
1211 f2fs_quota_sync(sbi->sb, -1);
1212 if (locked)
1213 up_read(&sbi->sb->s_umount);
1214 cond_resched();
1215 goto retry_flush_quotas;
1216 }
1217
1218retry_flush_dents:
1219
1220 if (get_pages(sbi, F2FS_DIRTY_DENTS)) {
1221 f2fs_unlock_all(sbi);
1222 err = f2fs_sync_dirty_inodes(sbi, DIR_INODE);
1223 if (err)
1224 return err;
1225 cond_resched();
1226 goto retry_flush_quotas;
1227 }
1228
1229
1230
1231
1232
1233 down_write(&sbi->node_change);
1234
1235 if (get_pages(sbi, F2FS_DIRTY_IMETA)) {
1236 up_write(&sbi->node_change);
1237 f2fs_unlock_all(sbi);
1238 err = f2fs_sync_inode_meta(sbi);
1239 if (err)
1240 return err;
1241 cond_resched();
1242 goto retry_flush_quotas;
1243 }
1244
1245retry_flush_nodes:
1246 down_write(&sbi->node_write);
1247
1248 if (get_pages(sbi, F2FS_DIRTY_NODES)) {
1249 up_write(&sbi->node_write);
1250 atomic_inc(&sbi->wb_sync_req[NODE]);
1251 err = f2fs_sync_node_pages(sbi, &wbc, false, FS_CP_NODE_IO);
1252 atomic_dec(&sbi->wb_sync_req[NODE]);
1253 if (err) {
1254 up_write(&sbi->node_change);
1255 f2fs_unlock_all(sbi);
1256 return err;
1257 }
1258 cond_resched();
1259 goto retry_flush_nodes;
1260 }
1261
1262
1263
1264
1265
1266 __prepare_cp_block(sbi);
1267 up_write(&sbi->node_change);
1268 return err;
1269}
1270
1271static void unblock_operations(struct f2fs_sb_info *sbi)
1272{
1273 up_write(&sbi->node_write);
1274 f2fs_unlock_all(sbi);
1275}
1276
1277void f2fs_wait_on_all_pages(struct f2fs_sb_info *sbi, int type)
1278{
1279 DEFINE_WAIT(wait);
1280
1281 for (;;) {
1282 if (!get_pages(sbi, type))
1283 break;
1284
1285 if (unlikely(f2fs_cp_error(sbi)))
1286 break;
1287
1288 if (type == F2FS_DIRTY_META)
1289 f2fs_sync_meta_pages(sbi, META, LONG_MAX,
1290 FS_CP_META_IO);
1291 else if (type == F2FS_WB_CP_DATA)
1292 f2fs_submit_merged_write(sbi, DATA);
1293
1294 prepare_to_wait(&sbi->cp_wait, &wait, TASK_UNINTERRUPTIBLE);
1295 io_schedule_timeout(DEFAULT_IO_TIMEOUT);
1296 }
1297 finish_wait(&sbi->cp_wait, &wait);
1298}
1299
1300static void update_ckpt_flags(struct f2fs_sb_info *sbi, struct cp_control *cpc)
1301{
1302 unsigned long orphan_num = sbi->im[ORPHAN_INO].ino_num;
1303 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1304 unsigned long flags;
1305
1306 if (cpc->reason & CP_UMOUNT) {
1307 if (le32_to_cpu(ckpt->cp_pack_total_block_count) >
1308 sbi->blocks_per_seg - NM_I(sbi)->nat_bits_blocks) {
1309 clear_ckpt_flags(sbi, CP_NAT_BITS_FLAG);
1310 f2fs_notice(sbi, "Disable nat_bits due to no space");
1311 } else if (!is_set_ckpt_flags(sbi, CP_NAT_BITS_FLAG) &&
1312 f2fs_nat_bitmap_enabled(sbi)) {
1313 f2fs_enable_nat_bits(sbi);
1314 set_ckpt_flags(sbi, CP_NAT_BITS_FLAG);
1315 f2fs_notice(sbi, "Rebuild and enable nat_bits");
1316 }
1317 }
1318
1319 spin_lock_irqsave(&sbi->cp_lock, flags);
1320
1321 if (cpc->reason & CP_TRIMMED)
1322 __set_ckpt_flags(ckpt, CP_TRIMMED_FLAG);
1323 else
1324 __clear_ckpt_flags(ckpt, CP_TRIMMED_FLAG);
1325
1326 if (cpc->reason & CP_UMOUNT)
1327 __set_ckpt_flags(ckpt, CP_UMOUNT_FLAG);
1328 else
1329 __clear_ckpt_flags(ckpt, CP_UMOUNT_FLAG);
1330
1331 if (cpc->reason & CP_FASTBOOT)
1332 __set_ckpt_flags(ckpt, CP_FASTBOOT_FLAG);
1333 else
1334 __clear_ckpt_flags(ckpt, CP_FASTBOOT_FLAG);
1335
1336 if (orphan_num)
1337 __set_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG);
1338 else
1339 __clear_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG);
1340
1341 if (is_sbi_flag_set(sbi, SBI_NEED_FSCK))
1342 __set_ckpt_flags(ckpt, CP_FSCK_FLAG);
1343
1344 if (is_sbi_flag_set(sbi, SBI_IS_RESIZEFS))
1345 __set_ckpt_flags(ckpt, CP_RESIZEFS_FLAG);
1346 else
1347 __clear_ckpt_flags(ckpt, CP_RESIZEFS_FLAG);
1348
1349 if (is_sbi_flag_set(sbi, SBI_CP_DISABLED))
1350 __set_ckpt_flags(ckpt, CP_DISABLED_FLAG);
1351 else
1352 __clear_ckpt_flags(ckpt, CP_DISABLED_FLAG);
1353
1354 if (is_sbi_flag_set(sbi, SBI_CP_DISABLED_QUICK))
1355 __set_ckpt_flags(ckpt, CP_DISABLED_QUICK_FLAG);
1356 else
1357 __clear_ckpt_flags(ckpt, CP_DISABLED_QUICK_FLAG);
1358
1359 if (is_sbi_flag_set(sbi, SBI_QUOTA_SKIP_FLUSH))
1360 __set_ckpt_flags(ckpt, CP_QUOTA_NEED_FSCK_FLAG);
1361 else
1362 __clear_ckpt_flags(ckpt, CP_QUOTA_NEED_FSCK_FLAG);
1363
1364 if (is_sbi_flag_set(sbi, SBI_QUOTA_NEED_REPAIR))
1365 __set_ckpt_flags(ckpt, CP_QUOTA_NEED_FSCK_FLAG);
1366
1367
1368 __set_ckpt_flags(ckpt, CP_CRC_RECOVERY_FLAG);
1369 __clear_ckpt_flags(ckpt, CP_NOCRC_RECOVERY_FLAG);
1370
1371 spin_unlock_irqrestore(&sbi->cp_lock, flags);
1372}
1373
1374static void commit_checkpoint(struct f2fs_sb_info *sbi,
1375 void *src, block_t blk_addr)
1376{
1377 struct writeback_control wbc = {
1378 .for_reclaim = 0,
1379 };
1380
1381
1382
1383
1384
1385
1386 struct page *page = f2fs_grab_meta_page(sbi, blk_addr);
1387 int err;
1388
1389 f2fs_wait_on_page_writeback(page, META, true, true);
1390
1391 memcpy(page_address(page), src, PAGE_SIZE);
1392
1393 set_page_dirty(page);
1394 if (unlikely(!clear_page_dirty_for_io(page)))
1395 f2fs_bug_on(sbi, 1);
1396
1397
1398 err = __f2fs_write_meta_page(page, &wbc, FS_CP_META_IO);
1399 if (unlikely(err && f2fs_cp_error(sbi))) {
1400 f2fs_put_page(page, 1);
1401 return;
1402 }
1403
1404 f2fs_bug_on(sbi, err);
1405 f2fs_put_page(page, 0);
1406
1407
1408 f2fs_submit_merged_write(sbi, META_FLUSH);
1409}
1410
1411static inline u64 get_sectors_written(struct block_device *bdev)
1412{
1413 return (u64)part_stat_read(bdev, sectors[STAT_WRITE]);
1414}
1415
1416u64 f2fs_get_sectors_written(struct f2fs_sb_info *sbi)
1417{
1418 if (f2fs_is_multi_device(sbi)) {
1419 u64 sectors = 0;
1420 int i;
1421
1422 for (i = 0; i < sbi->s_ndevs; i++)
1423 sectors += get_sectors_written(FDEV(i).bdev);
1424
1425 return sectors;
1426 }
1427
1428 return get_sectors_written(sbi->sb->s_bdev);
1429}
1430
1431static int do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
1432{
1433 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1434 struct f2fs_nm_info *nm_i = NM_I(sbi);
1435 unsigned long orphan_num = sbi->im[ORPHAN_INO].ino_num, flags;
1436 block_t start_blk;
1437 unsigned int data_sum_blocks, orphan_blocks;
1438 __u32 crc32 = 0;
1439 int i;
1440 int cp_payload_blks = __cp_payload(sbi);
1441 struct curseg_info *seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE);
1442 u64 kbytes_written;
1443 int err;
1444
1445
1446 f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_CP_META_IO);
1447
1448
1449 ckpt->elapsed_time = cpu_to_le64(get_mtime(sbi, true));
1450 ckpt->free_segment_count = cpu_to_le32(free_segments(sbi));
1451 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
1452 ckpt->cur_node_segno[i] =
1453 cpu_to_le32(curseg_segno(sbi, i + CURSEG_HOT_NODE));
1454 ckpt->cur_node_blkoff[i] =
1455 cpu_to_le16(curseg_blkoff(sbi, i + CURSEG_HOT_NODE));
1456 ckpt->alloc_type[i + CURSEG_HOT_NODE] =
1457 curseg_alloc_type(sbi, i + CURSEG_HOT_NODE);
1458 }
1459 for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) {
1460 ckpt->cur_data_segno[i] =
1461 cpu_to_le32(curseg_segno(sbi, i + CURSEG_HOT_DATA));
1462 ckpt->cur_data_blkoff[i] =
1463 cpu_to_le16(curseg_blkoff(sbi, i + CURSEG_HOT_DATA));
1464 ckpt->alloc_type[i + CURSEG_HOT_DATA] =
1465 curseg_alloc_type(sbi, i + CURSEG_HOT_DATA);
1466 }
1467
1468
1469 data_sum_blocks = f2fs_npages_for_summary_flush(sbi, false);
1470 spin_lock_irqsave(&sbi->cp_lock, flags);
1471 if (data_sum_blocks < NR_CURSEG_DATA_TYPE)
1472 __set_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG);
1473 else
1474 __clear_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG);
1475 spin_unlock_irqrestore(&sbi->cp_lock, flags);
1476
1477 orphan_blocks = GET_ORPHAN_BLOCKS(orphan_num);
1478 ckpt->cp_pack_start_sum = cpu_to_le32(1 + cp_payload_blks +
1479 orphan_blocks);
1480
1481 if (__remain_node_summaries(cpc->reason))
1482 ckpt->cp_pack_total_block_count = cpu_to_le32(F2FS_CP_PACKS +
1483 cp_payload_blks + data_sum_blocks +
1484 orphan_blocks + NR_CURSEG_NODE_TYPE);
1485 else
1486 ckpt->cp_pack_total_block_count = cpu_to_le32(F2FS_CP_PACKS +
1487 cp_payload_blks + data_sum_blocks +
1488 orphan_blocks);
1489
1490
1491 update_ckpt_flags(sbi, cpc);
1492
1493
1494 get_sit_bitmap(sbi, __bitmap_ptr(sbi, SIT_BITMAP));
1495 get_nat_bitmap(sbi, __bitmap_ptr(sbi, NAT_BITMAP));
1496
1497 crc32 = f2fs_checkpoint_chksum(sbi, ckpt);
1498 *((__le32 *)((unsigned char *)ckpt +
1499 le32_to_cpu(ckpt->checksum_offset)))
1500 = cpu_to_le32(crc32);
1501
1502 start_blk = __start_cp_next_addr(sbi);
1503
1504
1505 if ((cpc->reason & CP_UMOUNT) &&
1506 is_set_ckpt_flags(sbi, CP_NAT_BITS_FLAG)) {
1507 __u64 cp_ver = cur_cp_version(ckpt);
1508 block_t blk;
1509
1510 cp_ver |= ((__u64)crc32 << 32);
1511 *(__le64 *)nm_i->nat_bits = cpu_to_le64(cp_ver);
1512
1513 blk = start_blk + sbi->blocks_per_seg - nm_i->nat_bits_blocks;
1514 for (i = 0; i < nm_i->nat_bits_blocks; i++)
1515 f2fs_update_meta_page(sbi, nm_i->nat_bits +
1516 (i << F2FS_BLKSIZE_BITS), blk + i);
1517 }
1518
1519
1520 f2fs_update_meta_page(sbi, ckpt, start_blk++);
1521
1522 for (i = 1; i < 1 + cp_payload_blks; i++)
1523 f2fs_update_meta_page(sbi, (char *)ckpt + i * F2FS_BLKSIZE,
1524 start_blk++);
1525
1526 if (orphan_num) {
1527 write_orphan_inodes(sbi, start_blk);
1528 start_blk += orphan_blocks;
1529 }
1530
1531 f2fs_write_data_summaries(sbi, start_blk);
1532 start_blk += data_sum_blocks;
1533
1534
1535 kbytes_written = sbi->kbytes_written;
1536 kbytes_written += (f2fs_get_sectors_written(sbi) -
1537 sbi->sectors_written_start) >> 1;
1538 seg_i->journal->info.kbytes_written = cpu_to_le64(kbytes_written);
1539
1540 if (__remain_node_summaries(cpc->reason)) {
1541 f2fs_write_node_summaries(sbi, start_blk);
1542 start_blk += NR_CURSEG_NODE_TYPE;
1543 }
1544
1545
1546 sbi->last_valid_block_count = sbi->total_valid_block_count;
1547 percpu_counter_set(&sbi->alloc_valid_block_count, 0);
1548
1549
1550 f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_CP_META_IO);
1551
1552 f2fs_wait_on_all_pages(sbi, F2FS_DIRTY_META);
1553
1554
1555 f2fs_wait_on_all_pages(sbi, F2FS_WB_CP_DATA);
1556
1557
1558 err = f2fs_flush_device_cache(sbi);
1559 if (err)
1560 return err;
1561
1562
1563 commit_checkpoint(sbi, ckpt, start_blk);
1564 f2fs_wait_on_all_pages(sbi, F2FS_WB_CP_DATA);
1565
1566
1567
1568
1569
1570 if (f2fs_sb_has_encrypt(sbi) || f2fs_sb_has_verity(sbi) ||
1571 f2fs_sb_has_compression(sbi))
1572 invalidate_mapping_pages(META_MAPPING(sbi),
1573 MAIN_BLKADDR(sbi), MAX_BLKADDR(sbi) - 1);
1574
1575 f2fs_release_ino_entry(sbi, false);
1576
1577 f2fs_reset_fsync_node_info(sbi);
1578
1579 clear_sbi_flag(sbi, SBI_IS_DIRTY);
1580 clear_sbi_flag(sbi, SBI_NEED_CP);
1581 clear_sbi_flag(sbi, SBI_QUOTA_SKIP_FLUSH);
1582
1583 spin_lock(&sbi->stat_lock);
1584 sbi->unusable_block_count = 0;
1585 spin_unlock(&sbi->stat_lock);
1586
1587 __set_cp_next_pack(sbi);
1588
1589
1590
1591
1592
1593 if (get_pages(sbi, F2FS_DIRTY_NODES) ||
1594 get_pages(sbi, F2FS_DIRTY_IMETA))
1595 set_sbi_flag(sbi, SBI_IS_DIRTY);
1596
1597 f2fs_bug_on(sbi, get_pages(sbi, F2FS_DIRTY_DENTS));
1598
1599 return unlikely(f2fs_cp_error(sbi)) ? -EIO : 0;
1600}
1601
1602int f2fs_write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
1603{
1604 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1605 unsigned long long ckpt_ver;
1606 int err = 0;
1607
1608 if (f2fs_readonly(sbi->sb) || f2fs_hw_is_readonly(sbi))
1609 return -EROFS;
1610
1611 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
1612 if (cpc->reason != CP_PAUSE)
1613 return 0;
1614 f2fs_warn(sbi, "Start checkpoint disabled!");
1615 }
1616 if (cpc->reason != CP_RESIZE)
1617 down_write(&sbi->cp_global_sem);
1618
1619 if (!is_sbi_flag_set(sbi, SBI_IS_DIRTY) &&
1620 ((cpc->reason & CP_FASTBOOT) || (cpc->reason & CP_SYNC) ||
1621 ((cpc->reason & CP_DISCARD) && !sbi->discard_blks)))
1622 goto out;
1623 if (unlikely(f2fs_cp_error(sbi))) {
1624 err = -EIO;
1625 goto out;
1626 }
1627
1628 trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "start block_ops");
1629
1630 err = block_operations(sbi);
1631 if (err)
1632 goto out;
1633
1634 trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "finish block_ops");
1635
1636 f2fs_flush_merged_writes(sbi);
1637
1638
1639 if (cpc->reason & CP_DISCARD) {
1640 if (!f2fs_exist_trim_candidates(sbi, cpc)) {
1641 unblock_operations(sbi);
1642 goto out;
1643 }
1644
1645 if (NM_I(sbi)->nat_cnt[DIRTY_NAT] == 0 &&
1646 SIT_I(sbi)->dirty_sentries == 0 &&
1647 prefree_segments(sbi) == 0) {
1648 f2fs_flush_sit_entries(sbi, cpc);
1649 f2fs_clear_prefree_segments(sbi, cpc);
1650 unblock_operations(sbi);
1651 goto out;
1652 }
1653 }
1654
1655
1656
1657
1658
1659
1660 ckpt_ver = cur_cp_version(ckpt);
1661 ckpt->checkpoint_ver = cpu_to_le64(++ckpt_ver);
1662
1663
1664 err = f2fs_flush_nat_entries(sbi, cpc);
1665 if (err) {
1666 f2fs_err(sbi, "f2fs_flush_nat_entries failed err:%d, stop checkpoint", err);
1667 f2fs_bug_on(sbi, !f2fs_cp_error(sbi));
1668 goto stop;
1669 }
1670
1671 f2fs_flush_sit_entries(sbi, cpc);
1672
1673
1674 f2fs_save_inmem_curseg(sbi);
1675
1676 err = do_checkpoint(sbi, cpc);
1677 if (err) {
1678 f2fs_err(sbi, "do_checkpoint failed err:%d, stop checkpoint", err);
1679 f2fs_bug_on(sbi, !f2fs_cp_error(sbi));
1680 f2fs_release_discard_addrs(sbi);
1681 } else {
1682 f2fs_clear_prefree_segments(sbi, cpc);
1683 }
1684
1685 f2fs_restore_inmem_curseg(sbi);
1686stop:
1687 unblock_operations(sbi);
1688 stat_inc_cp_count(sbi->stat_info);
1689
1690 if (cpc->reason & CP_RECOVERY)
1691 f2fs_notice(sbi, "checkpoint: version = %llx", ckpt_ver);
1692
1693
1694 f2fs_update_time(sbi, CP_TIME);
1695 trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "finish checkpoint");
1696out:
1697 if (cpc->reason != CP_RESIZE)
1698 up_write(&sbi->cp_global_sem);
1699 return err;
1700}
1701
1702void f2fs_init_ino_entry_info(struct f2fs_sb_info *sbi)
1703{
1704 int i;
1705
1706 for (i = 0; i < MAX_INO_ENTRY; i++) {
1707 struct inode_management *im = &sbi->im[i];
1708
1709 INIT_RADIX_TREE(&im->ino_root, GFP_ATOMIC);
1710 spin_lock_init(&im->ino_lock);
1711 INIT_LIST_HEAD(&im->ino_list);
1712 im->ino_num = 0;
1713 }
1714
1715 sbi->max_orphans = (sbi->blocks_per_seg - F2FS_CP_PACKS -
1716 NR_CURSEG_PERSIST_TYPE - __cp_payload(sbi)) *
1717 F2FS_ORPHANS_PER_BLOCK;
1718}
1719
1720int __init f2fs_create_checkpoint_caches(void)
1721{
1722 ino_entry_slab = f2fs_kmem_cache_create("f2fs_ino_entry",
1723 sizeof(struct ino_entry));
1724 if (!ino_entry_slab)
1725 return -ENOMEM;
1726 f2fs_inode_entry_slab = f2fs_kmem_cache_create("f2fs_inode_entry",
1727 sizeof(struct inode_entry));
1728 if (!f2fs_inode_entry_slab) {
1729 kmem_cache_destroy(ino_entry_slab);
1730 return -ENOMEM;
1731 }
1732 return 0;
1733}
1734
1735void f2fs_destroy_checkpoint_caches(void)
1736{
1737 kmem_cache_destroy(ino_entry_slab);
1738 kmem_cache_destroy(f2fs_inode_entry_slab);
1739}
1740
1741static int __write_checkpoint_sync(struct f2fs_sb_info *sbi)
1742{
1743 struct cp_control cpc = { .reason = CP_SYNC, };
1744 int err;
1745
1746 down_write(&sbi->gc_lock);
1747 err = f2fs_write_checkpoint(sbi, &cpc);
1748 up_write(&sbi->gc_lock);
1749
1750 return err;
1751}
1752
1753static void __checkpoint_and_complete_reqs(struct f2fs_sb_info *sbi)
1754{
1755 struct ckpt_req_control *cprc = &sbi->cprc_info;
1756 struct ckpt_req *req, *next;
1757 struct llist_node *dispatch_list;
1758 u64 sum_diff = 0, diff, count = 0;
1759 int ret;
1760
1761 dispatch_list = llist_del_all(&cprc->issue_list);
1762 if (!dispatch_list)
1763 return;
1764 dispatch_list = llist_reverse_order(dispatch_list);
1765
1766 ret = __write_checkpoint_sync(sbi);
1767 atomic_inc(&cprc->issued_ckpt);
1768
1769 llist_for_each_entry_safe(req, next, dispatch_list, llnode) {
1770 diff = (u64)ktime_ms_delta(ktime_get(), req->queue_time);
1771 req->ret = ret;
1772 complete(&req->wait);
1773
1774 sum_diff += diff;
1775 count++;
1776 }
1777 atomic_sub(count, &cprc->queued_ckpt);
1778 atomic_add(count, &cprc->total_ckpt);
1779
1780 spin_lock(&cprc->stat_lock);
1781 cprc->cur_time = (unsigned int)div64_u64(sum_diff, count);
1782 if (cprc->peak_time < cprc->cur_time)
1783 cprc->peak_time = cprc->cur_time;
1784 spin_unlock(&cprc->stat_lock);
1785}
1786
1787static int issue_checkpoint_thread(void *data)
1788{
1789 struct f2fs_sb_info *sbi = data;
1790 struct ckpt_req_control *cprc = &sbi->cprc_info;
1791 wait_queue_head_t *q = &cprc->ckpt_wait_queue;
1792repeat:
1793 if (kthread_should_stop())
1794 return 0;
1795
1796 if (!llist_empty(&cprc->issue_list))
1797 __checkpoint_and_complete_reqs(sbi);
1798
1799 wait_event_interruptible(*q,
1800 kthread_should_stop() || !llist_empty(&cprc->issue_list));
1801 goto repeat;
1802}
1803
1804static void flush_remained_ckpt_reqs(struct f2fs_sb_info *sbi,
1805 struct ckpt_req *wait_req)
1806{
1807 struct ckpt_req_control *cprc = &sbi->cprc_info;
1808
1809 if (!llist_empty(&cprc->issue_list)) {
1810 __checkpoint_and_complete_reqs(sbi);
1811 } else {
1812
1813 if (wait_req)
1814 wait_for_completion(&wait_req->wait);
1815 }
1816}
1817
1818static void init_ckpt_req(struct ckpt_req *req)
1819{
1820 memset(req, 0, sizeof(struct ckpt_req));
1821
1822 init_completion(&req->wait);
1823 req->queue_time = ktime_get();
1824}
1825
1826int f2fs_issue_checkpoint(struct f2fs_sb_info *sbi)
1827{
1828 struct ckpt_req_control *cprc = &sbi->cprc_info;
1829 struct ckpt_req req;
1830 struct cp_control cpc;
1831
1832 cpc.reason = __get_cp_reason(sbi);
1833 if (!test_opt(sbi, MERGE_CHECKPOINT) || cpc.reason != CP_SYNC) {
1834 int ret;
1835
1836 down_write(&sbi->gc_lock);
1837 ret = f2fs_write_checkpoint(sbi, &cpc);
1838 up_write(&sbi->gc_lock);
1839
1840 return ret;
1841 }
1842
1843 if (!cprc->f2fs_issue_ckpt)
1844 return __write_checkpoint_sync(sbi);
1845
1846 init_ckpt_req(&req);
1847
1848 llist_add(&req.llnode, &cprc->issue_list);
1849 atomic_inc(&cprc->queued_ckpt);
1850
1851
1852
1853
1854
1855
1856 smp_mb();
1857
1858 if (waitqueue_active(&cprc->ckpt_wait_queue))
1859 wake_up(&cprc->ckpt_wait_queue);
1860
1861 if (cprc->f2fs_issue_ckpt)
1862 wait_for_completion(&req.wait);
1863 else
1864 flush_remained_ckpt_reqs(sbi, &req);
1865
1866 return req.ret;
1867}
1868
1869int f2fs_start_ckpt_thread(struct f2fs_sb_info *sbi)
1870{
1871 dev_t dev = sbi->sb->s_bdev->bd_dev;
1872 struct ckpt_req_control *cprc = &sbi->cprc_info;
1873
1874 if (cprc->f2fs_issue_ckpt)
1875 return 0;
1876
1877 cprc->f2fs_issue_ckpt = kthread_run(issue_checkpoint_thread, sbi,
1878 "f2fs_ckpt-%u:%u", MAJOR(dev), MINOR(dev));
1879 if (IS_ERR(cprc->f2fs_issue_ckpt)) {
1880 cprc->f2fs_issue_ckpt = NULL;
1881 return -ENOMEM;
1882 }
1883
1884 set_task_ioprio(cprc->f2fs_issue_ckpt, cprc->ckpt_thread_ioprio);
1885
1886 return 0;
1887}
1888
1889void f2fs_stop_ckpt_thread(struct f2fs_sb_info *sbi)
1890{
1891 struct ckpt_req_control *cprc = &sbi->cprc_info;
1892
1893 if (cprc->f2fs_issue_ckpt) {
1894 struct task_struct *ckpt_task = cprc->f2fs_issue_ckpt;
1895
1896 cprc->f2fs_issue_ckpt = NULL;
1897 kthread_stop(ckpt_task);
1898
1899 flush_remained_ckpt_reqs(sbi, NULL);
1900 }
1901}
1902
1903void f2fs_init_ckpt_req_control(struct f2fs_sb_info *sbi)
1904{
1905 struct ckpt_req_control *cprc = &sbi->cprc_info;
1906
1907 atomic_set(&cprc->issued_ckpt, 0);
1908 atomic_set(&cprc->total_ckpt, 0);
1909 atomic_set(&cprc->queued_ckpt, 0);
1910 cprc->ckpt_thread_ioprio = DEFAULT_CHECKPOINT_IOPRIO;
1911 init_waitqueue_head(&cprc->ckpt_wait_queue);
1912 init_llist_head(&cprc->issue_list);
1913 spin_lock_init(&cprc->stat_lock);
1914}
1915
