commit: 4469a5f387fdde956894137751a41473618a4a52
From: Joe Thornber <[email protected]>
Date: Wed, 7 Mar 2012 19:09:43 +0000
Subject: dm thin metadata: unlock superblock in init_pmd error path

If dm_sm_disk_create() fails the superblock must be unlocked.

Signed-off-by: Joe Thornber <[email protected]>
Acked-by: Mike Snitzer <[email protected]>
Cc: [email protected]
Signed-off-by: Alasdair G Kergon <[email protected]>
---
 drivers/md/dm-thin-metadata.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/drivers/md/dm-thin-metadata.c b/drivers/md/dm-thin-metadata.c
index 13d9646..05b7ffc 100644
--- a/drivers/md/dm-thin-metadata.c
+++ b/drivers/md/dm-thin-metadata.c
@@ -385,6 +385,7 @@ static int init_pmd(struct dm_pool_metadata *pmd,
                data_sm = dm_sm_disk_create(tm, nr_blocks);
                if (IS_ERR(data_sm)) {
                        DMERR("sm_disk_create failed");
+                       dm_tm_unlock(tm, sblock);
                        r = PTR_ERR(data_sm);
                        goto bad;
                }
-- 
1.7.3.4
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