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Btrfs: check return value of bio_alloc() properly

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bio_alloc() has the possibility of returning NULL.
So, it is necessary to check the return value.

Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Tsutomu Itoh
2012-04-12 16:03:56 -04:00
committed by Chris Mason
parent c6664b42c4
commit e627ee7bcd
3 changed files with 10 additions and 0 deletions
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4
fs/btrfs/extent_io.c
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@@ -2180,6 +2180,10 @@ static int bio_readpage_error(struct bio *failed_bio, struct page *page,
}
bio = bio_alloc(GFP_NOFS, 1);
if (!bio) {
free_io_failure(inode, failrec, 0);
return -EIO;
}
bio->bi_private = state;
bio->bi_end_io = failed_bio->bi_end_io;
bio->bi_sector = failrec->logical >> 9;