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Btrfs: fix put dio bio twice when we submit dio bio fail 

The caller of btrfs_submit_direct_hook() will put the original dio bio
when btrfs_submit_direct_hook() return a error number, so we needn't
put the original bio in btrfs_submit_direct_hook().

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>
This commit is contained in:
Miao Xie 2014-06-17 18:58:59 +08:00 committed by Chris Mason
parent 8d875f95da
commit 7a5c3c9be1
1 changed files with 2 additions and 3 deletions
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5
fs/btrfs/inode.c
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@ -7306,10 +7306,8 @@ static int btrfs_submit_direct_hook(int rw, struct btrfs_dio_private *dip,
map_length = orig_bio->bi_iter.bi_size;
ret = btrfs_map_block(root->fs_info, rw, start_sector << 9,
&map_length, NULL, 0);
if (ret) {
bio_put(orig_bio);
if (ret)
return -EIO;
}
if (map_length >= orig_bio->bi_iter.bi_size) {
bio = orig_bio;
@ -7326,6 +7324,7 @@ static int btrfs_submit_direct_hook(int rw, struct btrfs_dio_private *dip,
bio = btrfs_dio_bio_alloc(orig_bio->bi_bdev, start_sector, GFP_NOFS);
if (!bio)
return -ENOMEM;
bio->bi_private = dip;
bio->bi_end_io = btrfs_end_dio_bio;
atomic_inc(&dip->pending_bios);