This patch cleans up checkpoint flow a bit:
- remove unneeded circulation of flushing meta pages.
- don't flush nat_bits pages in prior to other checkpoint pages.
- add bug_on to check remained meta pages after flushing.
Signed-off-by: Chao Yu <yuch...@huawei.com>
---
fs/f2fs/checkpoint.c | 18 +++++-------------
1 file changed, 5 insertions(+), 13 deletions(-)
diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index 0a6b5dc0d717..623536b8e0c0 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -1328,11 +1328,9 @@ static int do_checkpoint(struct f2fs_sb_info *sbi,
struct cp_control *cpc)
int err;
/* Flush all the NAT/SIT pages */
- while (get_pages(sbi, F2FS_DIRTY_META)) {
- f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_CP_META_IO);
- if (unlikely(f2fs_cp_error(sbi)))
- break;
- }
+ f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_CP_META_IO);
+ f2fs_bug_on(sbi, get_pages(sbi, F2FS_DIRTY_META) &&
+ !f2fs_cp_error(sbi));
/*
* modify checkpoint
@@ -1405,14 +1403,6 @@ static int do_checkpoint(struct f2fs_sb_info *sbi,
struct cp_control *cpc)
for (i = 0; i < nm_i->nat_bits_blocks; i++)
f2fs_update_meta_page(sbi, nm_i->nat_bits +
(i << F2FS_BLKSIZE_BITS), blk + i);
-
- /* Flush all the NAT BITS pages */
- while (get_pages(sbi, F2FS_DIRTY_META)) {
- f2fs_sync_meta_pages(sbi, META, LONG_MAX,
- FS_CP_META_IO);
- if (unlikely(f2fs_cp_error(sbi)))
- break;
- }
}
/* write out checkpoint buffer at block 0 */
@@ -1448,6 +1438,8 @@ static int do_checkpoint(struct f2fs_sb_info *sbi, struct
cp_control *cpc)
/* Here, we have one bio having CP pack except cp pack 2 page */
f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_CP_META_IO);
+ f2fs_bug_on(sbi, get_pages(sbi, F2FS_DIRTY_META) &&
+ !f2fs_cp_error(sbi));
/* wait for previous submitted meta pages writeback */
f2fs_wait_on_all_pages_writeback(sbi);
--
2.18.0.rc1
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