diff --git a/[refs] b/[refs]
index d2f4f659ae4a..99c9d4ae5cb2 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 450c622e9ff19888818d4e2c4d31adb97a5242b2
+refs/heads/master: f5c8f7dae75e1e6bb3200fc61302e4d5e2df3dc2
diff --git a/trunk/fs/ext3/super.c b/trunk/fs/ext3/super.c
index fe3119a71ada..2845425077e8 100644
--- a/trunk/fs/ext3/super.c
+++ b/trunk/fs/ext3/super.c
@@ -2875,8 +2875,10 @@ static ssize_t ext3_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);
 		EXT3_I(inode)->i_disksize = inode->i_size;