From: Vivek Goyal <vgoyal@redhat.com>
Date: Thu, 3 Dec 2009 17:59:46 +0000 (-0500)
Subject: blkio: Dynamic cfq group creation based on cgroup tasks belongs to
X-Git-Tag: v2.6.33-rc1~379^2~23
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=25fb5169d4c9d4255107abbb7c08ab712434efc8;p=pandora-kernel.git

blkio: Dynamic cfq group creation based on cgroup tasks belongs to

o Determine the cgroup IO submitting task belongs to and create the cfq
  group if it does not exist already.

o Also link cfqq and associated cfq group.

o Currently all async IO is mapped to root group.

Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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