diff --git a/[refs] b/[refs]
index 9ef21d020127..2336b5e678c1 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 905c3937625d14fa4453a2643814b72b8a22d9ae
+refs/heads/master: 0b7f7cefaea96ef25dbe54b8e16d2d61560d8b9d
diff --git a/trunk/fs/ext4/super.c b/trunk/fs/ext4/super.c
index ceebaf853beb..97938db9f39d 100644
--- a/trunk/fs/ext4/super.c
+++ b/trunk/fs/ext4/super.c
@@ -4760,7 +4760,6 @@ static ssize_t ext4_quota_write(struct super_block *sb, int type,
 		return -EIO;
 	}
 
-	mutex_lock_nested(&inode->i_mutex, I_MUTEX_QUOTA);
 	bh = ext4_bread(handle, inode, blk, 1, &err);
 	if (!bh)
 		goto out;
@@ -4776,16 +4775,13 @@ static ssize_t ext4_quota_write(struct super_block *sb, int type,
 	err = ext4_handle_dirty_metadata(handle, NULL, bh);
 	brelse(bh);
 out:
-	if (err) {
-		mutex_unlock(&inode->i_mutex);
+	if (err)
 		return err;
-	}
 	if (inode->i_size < off + len) {
 		i_size_write(inode, off + len);
 		EXT4_I(inode)->i_disksize = inode->i_size;
 		ext4_mark_inode_dirty(handle, inode);
 	}
-	mutex_unlock(&inode->i_mutex);
 	return len;
 }