From: Tejun Heo <tj@kernel.org>
Date: Mon, 5 Mar 2012 21:14:58 +0000 (-0800)
Subject: block: implement blk_queue_bypass_start/end()
X-Git-Tag: v3.5-rc1~42^2~88
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d732580b4eb31553c63744a47d590f770cafb8f0;p=pandora-kernel.git

block: implement blk_queue_bypass_start/end()

Rename and extend elv_queisce_start/end() to
blk_queue_bypass_start/end() which are exported and supports nesting
via @q->bypass_depth.  Also add blk_queue_bypass() to test bypass
state.

This will be further extended and used for blkio_group management.

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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