From: Shaohua Li <shli@kernel.org>
Date: Fri, 14 Dec 2012 03:15:51 +0000 (+0800)
Subject: block: add plug for blkdev_issue_discard
X-Git-Tag: v3.8-rc1~81^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0cfbcafcae8b7364b5fa96c2b26ccde7a3a296a9;p=pandora-kernel.git

block: add plug for blkdev_issue_discard

Last post of this patch appears lost, so I resend this.

Now discard merge works, add plug for blkdev_issue_discard. This will help
discard request merge especially for raid0 case. In raid0, a big discard
request is split to small requests, and if correct plug is added, such small
requests can be merged in low layer.

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

Reading git-diff-tree failed