From: NeilBrown <neilb@suse.de>
Date: Fri, 14 Dec 2012 19:49:27 +0000 (+0100)
Subject: block: export block_unplug tracepoint
X-Git-Tag: v3.8-rc1~81^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cbae8d45d61f3a8c155caf267d01e5e0f0b2f4b7;p=pandora-kernel.git

block: export block_unplug tracepoint

This allows stacked devices (like md/raid5) to provide blktrace
tracing, including unplug events.

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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