[PATCH] ext4: Fix Null dereference.

[Aneesh Kumar K.V]

Repoted by Adrian Bunk <[EMAIL PROTECTED]>:

The Coverity checker spotted the following NULL dereference:

static int ext4_mb_mark_diskspace_used
{
        ...
        if (!bitmap_bh)
                goto out_err;
        ...
out_err:
        sb->s_dirt = 1;
        put_bh(bitmap_bh);
        ...

Signed-off-by: Aneesh Kumar K.V <[EMAIL PROTECTED]>
---
 fs/ext4/mballoc.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 76e5fed..06d1f52 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -3069,7 +3069,7 @@ static int ext4_mb_mark_diskspace_used(struct 
ext4_allocation_context *ac,
 
 out_err:
        sb->s_dirt = 1;
-       put_bh(bitmap_bh);
+       brelse(bitmap_bh);
        return err;
 }
 
-- 
1.5.4.rc3.24.gb53139-dirty

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