From: Tejun Heo <tj@kernel.org>
Date: Tue, 18 Aug 2015 21:55:25 +0000 (-0700)
Subject: blkcg: remove cfqg_stats->sectors
X-Git-Tag: omap-for-v4.3/fixes-rc1~35^2~11
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=702747cabe737fe9b358739443d539f10cc7c715;p=pandora-kernel.git

blkcg: remove cfqg_stats->sectors

cfq_stats->sectors is a blkg_stat which keeps track of the total
number of sectors serviced; however, this can be trivially calculated
from blkcg_gq->stat_bytes.  The only thing necessary is adding up
READs and WRITEs and then dividing by sector size.

Remove cfqg_stats->sectors and make cfq print "sectors" and
"sectors_recursive" from stat_bytes.

While this is a bit more code, it removes duplicate stat allocations
and updates and ensures that the reported stats stay in tune with each
other.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
---

Reading git-diff-tree failed