From: Chris Mason <chris.mason@oracle.com>
Date: Thu, 15 Dec 2011 20:38:41 +0000 (-0500)
Subject: Btrfs: unplug every once and a while
X-Git-Tag: v3.2-rc6~4^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d85c8a6f1bc083279215ff6e79b7c292bf3ec905;p=pandora-kernel.git

Btrfs: unplug every once and a while

The btrfs io submission threads can build up massive plug lists.  This
keeps things more reasonable so we don't hand over huge dumps of IO at
once.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
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