From 84e9e03c55c2456799ab19f1d577e72f721fdd39 Mon Sep 17 00:00:00 2001
From: Jens Axboe <jens.axboe@oracle.com>
Date: Mon, 18 Feb 2008 13:51:56 +0100
Subject: [PATCH] block: make blk_rq_map_user() clear ->bio if it unmaps it

That way the interface is symmetric, and calling blk_rq_unmap_user()
on the request wont oops.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
---
Reading git-format-patch failed