4 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
5 * http://www.samsung.com/
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
12 #include <linux/bio.h>
13 #include <linux/mpage.h>
14 #include <linux/writeback.h>
15 #include <linux/blkdev.h>
16 #include <linux/f2fs_fs.h>
17 #include <linux/pagevec.h>
18 #include <linux/swap.h>
23 #include <trace/events/f2fs.h>
25 static struct kmem_cache *orphan_entry_slab;
26 static struct kmem_cache *inode_entry_slab;
29 * We guarantee no failure on the returned page.
31 struct page *grab_meta_page(struct f2fs_sb_info *sbi, pgoff_t index)
33 struct address_space *mapping = sbi->meta_inode->i_mapping;
34 struct page *page = NULL;
36 page = grab_cache_page(mapping, index);
42 /* We wait writeback only inside grab_meta_page() */
43 wait_on_page_writeback(page);
44 SetPageUptodate(page);
49 * We guarantee no failure on the returned page.
51 struct page *get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index)
53 struct address_space *mapping = sbi->meta_inode->i_mapping;
56 page = grab_cache_page(mapping, index);
61 if (PageUptodate(page))
64 if (f2fs_submit_page_bio(sbi, page, index,
65 READ_SYNC | REQ_META | REQ_PRIO))
69 if (unlikely(page->mapping != mapping)) {
70 f2fs_put_page(page, 1);
74 mark_page_accessed(page);
78 static int f2fs_write_meta_page(struct page *page,
79 struct writeback_control *wbc)
81 struct inode *inode = page->mapping->host;
82 struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
84 /* Should not write any meta pages, if any IO error was occurred */
85 if (unlikely(sbi->por_doing ||
86 is_set_ckpt_flags(F2FS_CKPT(sbi), CP_ERROR_FLAG)))
92 wait_on_page_writeback(page);
94 write_meta_page(sbi, page);
95 dec_page_count(sbi, F2FS_DIRTY_META);
100 dec_page_count(sbi, F2FS_DIRTY_META);
101 wbc->pages_skipped++;
102 set_page_dirty(page);
103 return AOP_WRITEPAGE_ACTIVATE;
106 static int f2fs_write_meta_pages(struct address_space *mapping,
107 struct writeback_control *wbc)
109 struct f2fs_sb_info *sbi = F2FS_SB(mapping->host->i_sb);
110 int nrpages = MAX_BIO_BLOCKS(max_hw_blocks(sbi));
113 if (wbc->for_kupdate)
116 /* collect a number of dirty meta pages and write together */
117 if (get_pages(sbi, F2FS_DIRTY_META) < nrpages)
120 /* if mounting is failed, skip writing node pages */
121 mutex_lock(&sbi->cp_mutex);
122 written = sync_meta_pages(sbi, META, nrpages);
123 mutex_unlock(&sbi->cp_mutex);
124 wbc->nr_to_write -= written;
128 long sync_meta_pages(struct f2fs_sb_info *sbi, enum page_type type,
131 struct address_space *mapping = sbi->meta_inode->i_mapping;
132 pgoff_t index = 0, end = LONG_MAX;
135 struct writeback_control wbc = {
139 pagevec_init(&pvec, 0);
141 while (index <= end) {
143 nr_pages = pagevec_lookup_tag(&pvec, mapping, &index,
145 min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1);
146 if (unlikely(nr_pages == 0))
149 for (i = 0; i < nr_pages; i++) {
150 struct page *page = pvec.pages[i];
152 f2fs_bug_on(page->mapping != mapping);
153 f2fs_bug_on(!PageDirty(page));
154 clear_page_dirty_for_io(page);
155 if (f2fs_write_meta_page(page, &wbc)) {
160 if (unlikely(nwritten >= nr_to_write))
163 pagevec_release(&pvec);
168 f2fs_submit_merged_bio(sbi, type, WRITE);
173 static int f2fs_set_meta_page_dirty(struct page *page)
175 struct address_space *mapping = page->mapping;
176 struct f2fs_sb_info *sbi = F2FS_SB(mapping->host->i_sb);
178 trace_f2fs_set_page_dirty(page, META);
180 SetPageUptodate(page);
181 if (!PageDirty(page)) {
182 __set_page_dirty_nobuffers(page);
183 inc_page_count(sbi, F2FS_DIRTY_META);
189 const struct address_space_operations f2fs_meta_aops = {
190 .writepage = f2fs_write_meta_page,
191 .writepages = f2fs_write_meta_pages,
192 .set_page_dirty = f2fs_set_meta_page_dirty,
195 int acquire_orphan_inode(struct f2fs_sb_info *sbi)
199 mutex_lock(&sbi->orphan_inode_mutex);
200 if (unlikely(sbi->n_orphans >= sbi->max_orphans))
204 mutex_unlock(&sbi->orphan_inode_mutex);
209 void release_orphan_inode(struct f2fs_sb_info *sbi)
211 mutex_lock(&sbi->orphan_inode_mutex);
212 f2fs_bug_on(sbi->n_orphans == 0);
214 mutex_unlock(&sbi->orphan_inode_mutex);
217 void add_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino)
219 struct list_head *head, *this;
220 struct orphan_inode_entry *new = NULL, *orphan = NULL;
222 mutex_lock(&sbi->orphan_inode_mutex);
223 head = &sbi->orphan_inode_list;
224 list_for_each(this, head) {
225 orphan = list_entry(this, struct orphan_inode_entry, list);
226 if (orphan->ino == ino)
228 if (orphan->ino > ino)
233 new = f2fs_kmem_cache_alloc(orphan_entry_slab, GFP_ATOMIC);
236 /* add new_oentry into list which is sorted by inode number */
238 list_add(&new->list, this->prev);
240 list_add_tail(&new->list, head);
242 mutex_unlock(&sbi->orphan_inode_mutex);
245 void remove_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino)
247 struct list_head *head;
248 struct orphan_inode_entry *orphan;
250 mutex_lock(&sbi->orphan_inode_mutex);
251 head = &sbi->orphan_inode_list;
252 list_for_each_entry(orphan, head, list) {
253 if (orphan->ino == ino) {
254 list_del(&orphan->list);
255 kmem_cache_free(orphan_entry_slab, orphan);
256 f2fs_bug_on(sbi->n_orphans == 0);
261 mutex_unlock(&sbi->orphan_inode_mutex);
264 static void recover_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino)
266 struct inode *inode = f2fs_iget(sbi->sb, ino);
267 f2fs_bug_on(IS_ERR(inode));
270 /* truncate all the data during iput */
274 void recover_orphan_inodes(struct f2fs_sb_info *sbi)
276 block_t start_blk, orphan_blkaddr, i, j;
278 if (!is_set_ckpt_flags(F2FS_CKPT(sbi), CP_ORPHAN_PRESENT_FLAG))
281 sbi->por_doing = true;
282 start_blk = __start_cp_addr(sbi) + 1;
283 orphan_blkaddr = __start_sum_addr(sbi) - 1;
285 for (i = 0; i < orphan_blkaddr; i++) {
286 struct page *page = get_meta_page(sbi, start_blk + i);
287 struct f2fs_orphan_block *orphan_blk;
289 orphan_blk = (struct f2fs_orphan_block *)page_address(page);
290 for (j = 0; j < le32_to_cpu(orphan_blk->entry_count); j++) {
291 nid_t ino = le32_to_cpu(orphan_blk->ino[j]);
292 recover_orphan_inode(sbi, ino);
294 f2fs_put_page(page, 1);
296 /* clear Orphan Flag */
297 clear_ckpt_flags(F2FS_CKPT(sbi), CP_ORPHAN_PRESENT_FLAG);
298 sbi->por_doing = false;
302 static void write_orphan_inodes(struct f2fs_sb_info *sbi, block_t start_blk)
304 struct list_head *head;
305 struct f2fs_orphan_block *orphan_blk = NULL;
306 struct page *page = NULL;
307 unsigned int nentries = 0;
308 unsigned short index = 1;
309 unsigned short orphan_blocks;
310 struct orphan_inode_entry *orphan = NULL;
312 orphan_blocks = (unsigned short)((sbi->n_orphans +
313 (F2FS_ORPHANS_PER_BLOCK - 1)) / F2FS_ORPHANS_PER_BLOCK);
315 mutex_lock(&sbi->orphan_inode_mutex);
316 head = &sbi->orphan_inode_list;
318 /* loop for each orphan inode entry and write them in Jornal block */
319 list_for_each_entry(orphan, head, list) {
321 page = grab_meta_page(sbi, start_blk);
323 (struct f2fs_orphan_block *)page_address(page);
324 memset(orphan_blk, 0, sizeof(*orphan_blk));
327 orphan_blk->ino[nentries++] = cpu_to_le32(orphan->ino);
329 if (nentries == F2FS_ORPHANS_PER_BLOCK) {
331 * an orphan block is full of 1020 entries,
332 * then we need to flush current orphan blocks
333 * and bring another one in memory
335 orphan_blk->blk_addr = cpu_to_le16(index);
336 orphan_blk->blk_count = cpu_to_le16(orphan_blocks);
337 orphan_blk->entry_count = cpu_to_le32(nentries);
338 set_page_dirty(page);
339 f2fs_put_page(page, 1);
348 orphan_blk->blk_addr = cpu_to_le16(index);
349 orphan_blk->blk_count = cpu_to_le16(orphan_blocks);
350 orphan_blk->entry_count = cpu_to_le32(nentries);
351 set_page_dirty(page);
352 f2fs_put_page(page, 1);
355 mutex_unlock(&sbi->orphan_inode_mutex);
358 static struct page *validate_checkpoint(struct f2fs_sb_info *sbi,
359 block_t cp_addr, unsigned long long *version)
361 struct page *cp_page_1, *cp_page_2 = NULL;
362 unsigned long blk_size = sbi->blocksize;
363 struct f2fs_checkpoint *cp_block;
364 unsigned long long cur_version = 0, pre_version = 0;
368 /* Read the 1st cp block in this CP pack */
369 cp_page_1 = get_meta_page(sbi, cp_addr);
371 /* get the version number */
372 cp_block = (struct f2fs_checkpoint *)page_address(cp_page_1);
373 crc_offset = le32_to_cpu(cp_block->checksum_offset);
374 if (crc_offset >= blk_size)
377 crc = le32_to_cpu(*((__u32 *)((unsigned char *)cp_block + crc_offset)));
378 if (!f2fs_crc_valid(crc, cp_block, crc_offset))
381 pre_version = cur_cp_version(cp_block);
383 /* Read the 2nd cp block in this CP pack */
384 cp_addr += le32_to_cpu(cp_block->cp_pack_total_block_count) - 1;
385 cp_page_2 = get_meta_page(sbi, cp_addr);
387 cp_block = (struct f2fs_checkpoint *)page_address(cp_page_2);
388 crc_offset = le32_to_cpu(cp_block->checksum_offset);
389 if (crc_offset >= blk_size)
392 crc = le32_to_cpu(*((__u32 *)((unsigned char *)cp_block + crc_offset)));
393 if (!f2fs_crc_valid(crc, cp_block, crc_offset))
396 cur_version = cur_cp_version(cp_block);
398 if (cur_version == pre_version) {
399 *version = cur_version;
400 f2fs_put_page(cp_page_2, 1);
404 f2fs_put_page(cp_page_2, 1);
406 f2fs_put_page(cp_page_1, 1);
410 int get_valid_checkpoint(struct f2fs_sb_info *sbi)
412 struct f2fs_checkpoint *cp_block;
413 struct f2fs_super_block *fsb = sbi->raw_super;
414 struct page *cp1, *cp2, *cur_page;
415 unsigned long blk_size = sbi->blocksize;
416 unsigned long long cp1_version = 0, cp2_version = 0;
417 unsigned long long cp_start_blk_no;
419 sbi->ckpt = kzalloc(blk_size, GFP_KERNEL);
423 * Finding out valid cp block involves read both
424 * sets( cp pack1 and cp pack 2)
426 cp_start_blk_no = le32_to_cpu(fsb->cp_blkaddr);
427 cp1 = validate_checkpoint(sbi, cp_start_blk_no, &cp1_version);
429 /* The second checkpoint pack should start at the next segment */
430 cp_start_blk_no += ((unsigned long long)1) <<
431 le32_to_cpu(fsb->log_blocks_per_seg);
432 cp2 = validate_checkpoint(sbi, cp_start_blk_no, &cp2_version);
435 if (ver_after(cp2_version, cp1_version))
447 cp_block = (struct f2fs_checkpoint *)page_address(cur_page);
448 memcpy(sbi->ckpt, cp_block, blk_size);
450 f2fs_put_page(cp1, 1);
451 f2fs_put_page(cp2, 1);
459 static int __add_dirty_inode(struct inode *inode, struct dir_inode_entry *new)
461 struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
462 struct list_head *head = &sbi->dir_inode_list;
463 struct list_head *this;
465 list_for_each(this, head) {
466 struct dir_inode_entry *entry;
467 entry = list_entry(this, struct dir_inode_entry, list);
468 if (unlikely(entry->inode == inode))
471 list_add_tail(&new->list, head);
472 stat_inc_dirty_dir(sbi);
476 void set_dirty_dir_page(struct inode *inode, struct page *page)
478 struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
479 struct dir_inode_entry *new;
481 if (!S_ISDIR(inode->i_mode))
484 new = f2fs_kmem_cache_alloc(inode_entry_slab, GFP_NOFS);
486 INIT_LIST_HEAD(&new->list);
488 spin_lock(&sbi->dir_inode_lock);
489 if (__add_dirty_inode(inode, new))
490 kmem_cache_free(inode_entry_slab, new);
492 inc_page_count(sbi, F2FS_DIRTY_DENTS);
493 inode_inc_dirty_dents(inode);
494 SetPagePrivate(page);
495 spin_unlock(&sbi->dir_inode_lock);
498 void add_dirty_dir_inode(struct inode *inode)
500 struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
501 struct dir_inode_entry *new =
502 f2fs_kmem_cache_alloc(inode_entry_slab, GFP_NOFS);
505 INIT_LIST_HEAD(&new->list);
507 spin_lock(&sbi->dir_inode_lock);
508 if (__add_dirty_inode(inode, new))
509 kmem_cache_free(inode_entry_slab, new);
510 spin_unlock(&sbi->dir_inode_lock);
513 void remove_dirty_dir_inode(struct inode *inode)
515 struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
517 struct list_head *this, *head;
519 if (!S_ISDIR(inode->i_mode))
522 spin_lock(&sbi->dir_inode_lock);
523 if (atomic_read(&F2FS_I(inode)->dirty_dents)) {
524 spin_unlock(&sbi->dir_inode_lock);
528 head = &sbi->dir_inode_list;
529 list_for_each(this, head) {
530 struct dir_inode_entry *entry;
531 entry = list_entry(this, struct dir_inode_entry, list);
532 if (entry->inode == inode) {
533 list_del(&entry->list);
534 kmem_cache_free(inode_entry_slab, entry);
535 stat_dec_dirty_dir(sbi);
539 spin_unlock(&sbi->dir_inode_lock);
541 /* Only from the recovery routine */
542 if (is_inode_flag_set(F2FS_I(inode), FI_DELAY_IPUT)) {
543 clear_inode_flag(F2FS_I(inode), FI_DELAY_IPUT);
548 struct inode *check_dirty_dir_inode(struct f2fs_sb_info *sbi, nid_t ino)
551 struct list_head *this, *head;
552 struct inode *inode = NULL;
554 spin_lock(&sbi->dir_inode_lock);
556 head = &sbi->dir_inode_list;
557 list_for_each(this, head) {
558 struct dir_inode_entry *entry;
559 entry = list_entry(this, struct dir_inode_entry, list);
560 if (entry->inode->i_ino == ino) {
561 inode = entry->inode;
565 spin_unlock(&sbi->dir_inode_lock);
569 void sync_dirty_dir_inodes(struct f2fs_sb_info *sbi)
571 struct list_head *head;
572 struct dir_inode_entry *entry;
575 spin_lock(&sbi->dir_inode_lock);
577 head = &sbi->dir_inode_list;
578 if (list_empty(head)) {
579 spin_unlock(&sbi->dir_inode_lock);
582 entry = list_entry(head->next, struct dir_inode_entry, list);
583 inode = igrab(entry->inode);
584 spin_unlock(&sbi->dir_inode_lock);
586 filemap_flush(inode->i_mapping);
590 * We should submit bio, since it exists several
591 * wribacking dentry pages in the freeing inode.
593 f2fs_submit_merged_bio(sbi, DATA, WRITE);
599 * Freeze all the FS-operations for checkpoint.
601 static void block_operations(struct f2fs_sb_info *sbi)
603 struct writeback_control wbc = {
604 .sync_mode = WB_SYNC_ALL,
605 .nr_to_write = LONG_MAX,
608 struct blk_plug plug;
610 blk_start_plug(&plug);
614 /* write all the dirty dentry pages */
615 if (get_pages(sbi, F2FS_DIRTY_DENTS)) {
616 f2fs_unlock_all(sbi);
617 sync_dirty_dir_inodes(sbi);
618 goto retry_flush_dents;
622 * POR: we should ensure that there is no dirty node pages
623 * until finishing nat/sit flush.
626 mutex_lock(&sbi->node_write);
628 if (get_pages(sbi, F2FS_DIRTY_NODES)) {
629 mutex_unlock(&sbi->node_write);
630 sync_node_pages(sbi, 0, &wbc);
631 goto retry_flush_nodes;
633 blk_finish_plug(&plug);
636 static void unblock_operations(struct f2fs_sb_info *sbi)
638 mutex_unlock(&sbi->node_write);
639 f2fs_unlock_all(sbi);
642 static void wait_on_all_pages_writeback(struct f2fs_sb_info *sbi)
647 prepare_to_wait(&sbi->cp_wait, &wait, TASK_UNINTERRUPTIBLE);
649 if (!get_pages(sbi, F2FS_WRITEBACK))
654 finish_wait(&sbi->cp_wait, &wait);
657 static void do_checkpoint(struct f2fs_sb_info *sbi, bool is_umount)
659 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
662 struct page *cp_page;
663 unsigned int data_sum_blocks, orphan_blocks;
668 /* Flush all the NAT/SIT pages */
669 while (get_pages(sbi, F2FS_DIRTY_META))
670 sync_meta_pages(sbi, META, LONG_MAX);
672 next_free_nid(sbi, &last_nid);
676 * version number is already updated
678 ckpt->elapsed_time = cpu_to_le64(get_mtime(sbi));
679 ckpt->valid_block_count = cpu_to_le64(valid_user_blocks(sbi));
680 ckpt->free_segment_count = cpu_to_le32(free_segments(sbi));
681 for (i = 0; i < 3; i++) {
682 ckpt->cur_node_segno[i] =
683 cpu_to_le32(curseg_segno(sbi, i + CURSEG_HOT_NODE));
684 ckpt->cur_node_blkoff[i] =
685 cpu_to_le16(curseg_blkoff(sbi, i + CURSEG_HOT_NODE));
686 ckpt->alloc_type[i + CURSEG_HOT_NODE] =
687 curseg_alloc_type(sbi, i + CURSEG_HOT_NODE);
689 for (i = 0; i < 3; i++) {
690 ckpt->cur_data_segno[i] =
691 cpu_to_le32(curseg_segno(sbi, i + CURSEG_HOT_DATA));
692 ckpt->cur_data_blkoff[i] =
693 cpu_to_le16(curseg_blkoff(sbi, i + CURSEG_HOT_DATA));
694 ckpt->alloc_type[i + CURSEG_HOT_DATA] =
695 curseg_alloc_type(sbi, i + CURSEG_HOT_DATA);
698 ckpt->valid_node_count = cpu_to_le32(valid_node_count(sbi));
699 ckpt->valid_inode_count = cpu_to_le32(valid_inode_count(sbi));
700 ckpt->next_free_nid = cpu_to_le32(last_nid);
702 /* 2 cp + n data seg summary + orphan inode blocks */
703 data_sum_blocks = npages_for_summary_flush(sbi);
704 if (data_sum_blocks < 3)
705 set_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG);
707 clear_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG);
709 orphan_blocks = (sbi->n_orphans + F2FS_ORPHANS_PER_BLOCK - 1)
710 / F2FS_ORPHANS_PER_BLOCK;
711 ckpt->cp_pack_start_sum = cpu_to_le32(1 + orphan_blocks);
714 set_ckpt_flags(ckpt, CP_UMOUNT_FLAG);
715 ckpt->cp_pack_total_block_count = cpu_to_le32(2 +
716 data_sum_blocks + orphan_blocks + NR_CURSEG_NODE_TYPE);
718 clear_ckpt_flags(ckpt, CP_UMOUNT_FLAG);
719 ckpt->cp_pack_total_block_count = cpu_to_le32(2 +
720 data_sum_blocks + orphan_blocks);
724 set_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG);
726 clear_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG);
728 /* update SIT/NAT bitmap */
729 get_sit_bitmap(sbi, __bitmap_ptr(sbi, SIT_BITMAP));
730 get_nat_bitmap(sbi, __bitmap_ptr(sbi, NAT_BITMAP));
732 crc32 = f2fs_crc32(ckpt, le32_to_cpu(ckpt->checksum_offset));
733 *((__le32 *)((unsigned char *)ckpt +
734 le32_to_cpu(ckpt->checksum_offset)))
735 = cpu_to_le32(crc32);
737 start_blk = __start_cp_addr(sbi);
739 /* write out checkpoint buffer at block 0 */
740 cp_page = grab_meta_page(sbi, start_blk++);
741 kaddr = page_address(cp_page);
742 memcpy(kaddr, ckpt, (1 << sbi->log_blocksize));
743 set_page_dirty(cp_page);
744 f2fs_put_page(cp_page, 1);
746 if (sbi->n_orphans) {
747 write_orphan_inodes(sbi, start_blk);
748 start_blk += orphan_blocks;
751 write_data_summaries(sbi, start_blk);
752 start_blk += data_sum_blocks;
754 write_node_summaries(sbi, start_blk);
755 start_blk += NR_CURSEG_NODE_TYPE;
758 /* writeout checkpoint block */
759 cp_page = grab_meta_page(sbi, start_blk);
760 kaddr = page_address(cp_page);
761 memcpy(kaddr, ckpt, (1 << sbi->log_blocksize));
762 set_page_dirty(cp_page);
763 f2fs_put_page(cp_page, 1);
765 /* wait for previous submitted node/meta pages writeback */
766 wait_on_all_pages_writeback(sbi);
768 filemap_fdatawait_range(sbi->node_inode->i_mapping, 0, LONG_MAX);
769 filemap_fdatawait_range(sbi->meta_inode->i_mapping, 0, LONG_MAX);
771 /* update user_block_counts */
772 sbi->last_valid_block_count = sbi->total_valid_block_count;
773 sbi->alloc_valid_block_count = 0;
775 /* Here, we only have one bio having CP pack */
776 sync_meta_pages(sbi, META_FLUSH, LONG_MAX);
778 if (unlikely(!is_set_ckpt_flags(ckpt, CP_ERROR_FLAG))) {
779 clear_prefree_segments(sbi);
780 F2FS_RESET_SB_DIRT(sbi);
785 * We guarantee that this checkpoint procedure should not fail.
787 void write_checkpoint(struct f2fs_sb_info *sbi, bool is_umount)
789 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
790 unsigned long long ckpt_ver;
792 trace_f2fs_write_checkpoint(sbi->sb, is_umount, "start block_ops");
794 mutex_lock(&sbi->cp_mutex);
795 block_operations(sbi);
797 trace_f2fs_write_checkpoint(sbi->sb, is_umount, "finish block_ops");
799 f2fs_submit_merged_bio(sbi, DATA, WRITE);
800 f2fs_submit_merged_bio(sbi, NODE, WRITE);
801 f2fs_submit_merged_bio(sbi, META, WRITE);
804 * update checkpoint pack index
805 * Increase the version number so that
806 * SIT entries and seg summaries are written at correct place
808 ckpt_ver = cur_cp_version(ckpt);
809 ckpt->checkpoint_ver = cpu_to_le64(++ckpt_ver);
811 /* write cached NAT/SIT entries to NAT/SIT area */
812 flush_nat_entries(sbi);
813 flush_sit_entries(sbi);
815 /* unlock all the fs_lock[] in do_checkpoint() */
816 do_checkpoint(sbi, is_umount);
818 unblock_operations(sbi);
819 mutex_unlock(&sbi->cp_mutex);
821 trace_f2fs_write_checkpoint(sbi->sb, is_umount, "finish checkpoint");
824 void init_orphan_info(struct f2fs_sb_info *sbi)
826 mutex_init(&sbi->orphan_inode_mutex);
827 INIT_LIST_HEAD(&sbi->orphan_inode_list);
830 * considering 512 blocks in a segment 8 blocks are needed for cp
831 * and log segment summaries. Remaining blocks are used to keep
832 * orphan entries with the limitation one reserved segment
833 * for cp pack we can have max 1020*504 orphan entries
835 sbi->max_orphans = (sbi->blocks_per_seg - 2 - NR_CURSEG_TYPE)
836 * F2FS_ORPHANS_PER_BLOCK;
839 int __init create_checkpoint_caches(void)
841 orphan_entry_slab = f2fs_kmem_cache_create("f2fs_orphan_entry",
842 sizeof(struct orphan_inode_entry), NULL);
843 if (!orphan_entry_slab)
845 inode_entry_slab = f2fs_kmem_cache_create("f2fs_dirty_dir_entry",
846 sizeof(struct dir_inode_entry), NULL);
847 if (!inode_entry_slab) {
848 kmem_cache_destroy(orphan_entry_slab);
854 void destroy_checkpoint_caches(void)
856 kmem_cache_destroy(orphan_entry_slab);
857 kmem_cache_destroy(inode_entry_slab);