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| author | Jaegeuk Kim <jaegeuk@kernel.org> | 2015-08-14 11:43:56 -0700 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2015-08-20 09:00:09 -0700 |
| commit | 740432f835608d11b5386321ab5aa8f61e07fb27 (patch) | |
| tree | a732814d0ebbc706264ec4255ab1a6d006fb5dfe /fs/f2fs/data.c | |
| parent | a6db67f06fd9f6b1ddb11bcf4d7e8e8a86908d01 (diff) | |
| download | linux-740432f835608d11b5386321ab5aa8f61e07fb27.tar.gz linux-740432f835608d11b5386321ab5aa8f61e07fb27.tar.bz2 linux-740432f835608d11b5386321ab5aa8f61e07fb27.zip | |
f2fs: handle failed bio allocation
As the below comment of bio_alloc_bioset, f2fs can allocate multiple bios at the
same time. So, we can't guarantee that bio is allocated all the time.
"
* When @bs is not NULL, if %__GFP_WAIT is set then bio_alloc will always be
* able to allocate a bio. This is due to the mempool guarantees. To make this
* work, callers must never allocate more than 1 bio at a time from this pool.
* Callers that need to allocate more than 1 bio must always submit the
* previously allocated bio for IO before attempting to allocate a new one.
* Failure to do so can cause deadlocks under memory pressure.
"
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/data.c')
| -rw-r--r-- | fs/f2fs/data.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index cad9ebe45692..726e58b76295 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -90,8 +90,7 @@ static struct bio *__bio_alloc(struct f2fs_sb_info *sbi, block_t blk_addr, { struct bio *bio; - /* No failure on bio allocation */ - bio = bio_alloc(GFP_NOIO, npages); + bio = f2fs_bio_alloc(npages); bio->bi_bdev = sbi->sb->s_bdev; bio->bi_iter.bi_sector = SECTOR_FROM_BLOCK(blk_addr); |