From: Shaohua Li <shli@kernel.org>
Date: Tue, 31 Jul 2012 07:08:15 +0000 (+0200)
Subject: block: stack unplug
X-Git-Tag: v3.6-rc1~6^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2a7d5559b346574057dce4672d1ed9aaa9d1e685;p=pandora-kernel.git

block: stack unplug

MD raid1 prepares to dispatch request in unplug callback. If make_request in
low level queue also uses unplug callback to dispatch request, the low level
queue's unplug callback will not be called. Recheck the callback list helps
this case.

Signed-off-by: Shaohua Li <shli@fusionio.com>
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

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