reiserfs: add missing unlock to an error path in reiserfs_quota_write()

When write in reiserfs_quota_write() fails, we have to properly release
i_mutex. One error path has been missing the unlock...

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 3 insertions, 1 deletions

diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c
index ed424d708e69..1d40f2bd1970 100644
--- a/fs/reiserfs/super.c
+++ b/fs/reiserfs/super.c
@@ -2165,8 +2165,10 @@ static ssize_t reiserfs_quota_write(struct super_block *sb, int type,
                 blk++;
         }
 out:
-        if (len == towrite)
+        if (len == towrite) {
+                mutex_unlock(&inode->i_mutex);
                 return err;
+        }
         if (inode->i_size < off + len - towrite)
                 i_size_write(inode, off + len - towrite);
         inode->i_version++;