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btrfs: cleanup noused initialization of dev in btrfs_end_bio()

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It is introduced by:
 c404e0dc2c
 Btrfs: fix use-after-free in the finishing procedure of the device replace

But seems no relationship with that bug, this patch revirt these
code block for cleanup.

Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>
This commit is contained in:
Zhao Lei 2015-06-08 20:05:50 +08:00 committed by Chris Mason
parent fe7599079b
commit 65f5333875
1 changed files with 1 additions and 1 deletions
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2
fs/btrfs/volumes.c
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@ -5715,7 +5715,6 @@ static inline void btrfs_end_bbio(struct btrfs_bio *bbio, struct bio *bio, int e
static void btrfs_end_bio(struct bio *bio, int err)
{
struct btrfs_bio *bbio = bio->bi_private;
struct btrfs_device *dev = bbio->stripes[0].dev;
int is_orig_bio = 0;
if (err) {
@ -5723,6 +5722,7 @@ static void btrfs_end_bio(struct bio *bio, int err)
if (err == -EIO || err == -EREMOTEIO) {
unsigned int stripe_index =
btrfs_io_bio(bio)->stripe_index;
struct btrfs_device *dev;
BUG_ON(stripe_index >= bbio->num_stripes);
dev = bbio->stripes[stripe_index].dev;