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f2fs: do not assign a new segment for dio under space shortage

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If there is not enough free segment, we should not assign a new segment
explicitly. Otherwise, we can run out of free segment.

Reviewed-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim 2015-08-11 10:17:27 -07:00
parent decd36b6c4
commit 47e70ca46f
1 changed files with 2 additions and 1 deletions
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3
fs/f2fs/segment.c
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@ -1225,7 +1225,8 @@ void allocate_data_block(struct f2fs_sb_info *sbi, struct page *page,
mutex_lock(&sit_i->sentry_lock);
/* direct_io'ed data is aligned to the segment for better performance */
if (direct_io && curseg->next_blkoff)
if (direct_io && curseg->next_blkoff &&
!has_not_enough_free_secs(sbi, 0))
__allocate_new_segments(sbi, type);
*new_blkaddr = NEXT_FREE_BLKADDR(sbi, curseg);