[PATCH 1/1 linux-next] udf: destroy sbi mutex in put_super

[Fabian Frederick]

Call mutex_destroy() on superblock mutex in udf_put_super()
otherwise mutex debugging code isn't able to detect that
mutex is used after being freed.
(thanks to Jan Kara for complete definition).

Signed-off-by: Fabian Frederick <fabf@xxxxxxxxx>
---
 fs/udf/super.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/udf/super.c b/fs/udf/super.c
index 3ccb2f1..3d35a75 100644
--- a/fs/udf/super.c
+++ b/fs/udf/super.c
@@ -2300,6 +2300,7 @@ static void udf_put_super(struct super_block *sb)
 		udf_close_lvid(sb);
 	brelse(sbi->s_lvid_bh);
 	udf_sb_free_partitions(sb);
+	mutex_destroy(&sbi->s_alloc_mutex);
 	kfree(sb->s_fs_info);
 	sb->s_fs_info = NULL;
 }
-- 
2.1.0

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