From: Tejun Heo <tj@kernel.org>
Date: Mon, 5 Mar 2012 21:15:25 +0000 (-0800)
Subject: block: ioc_task_link() can't fail
X-Git-Tag: v3.5-rc1~42^2~61
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3d48749d93a3dce732dd30a14002ab90ec4355f3;p=pandora-kernel.git

block: ioc_task_link() can't fail

ioc_task_link() is used to share %current's ioc on clone.  If
%current->io_context is set, %current is guaranteed to have refcount
on the ioc and, thus, ioc_task_link() can't fail.

Replace error checking in ioc_task_link() with WARN_ON_ONCE() and make
it just increment refcount and nr_tasks.

-v2: Description typo fix (Vivek).

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

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