[PATCH] fix bd_claim_by_kobject error handling
This fixes bd_claim_by_kobject to release bdev correctly in case that
bd_claim succeeds but following add_bd_holder fails.
Signed-off-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/fs/block_dev.c b/fs/block_dev.c
index 702b88c..b54b0a1 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -751,8 +751,11 @@
mutex_lock_nested(&bdev->bd_mutex, BD_MUTEX_PARTITION);
res = bd_claim(bdev, holder);
- if (res == 0)
+ if (res == 0) {
res = add_bd_holder(bdev, bo);
+ if (res)
+ bd_release(bdev);
+ }
if (res)
free_bd_holder(bo);
mutex_unlock(&bdev->bd_mutex);