From: Tejun Heo <tj@kernel.org>
Date: Fri, 17 Apr 2009 06:34:48 +0000 (+0200)
Subject: block: include empty disks in /proc/diskstats
X-Git-Tag: v2.6.30-rc4~65^2~10
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=71982a409f12c50d011325a4471aa20666bb908d;p=pandora-kernel.git

block: include empty disks in /proc/diskstats

/proc/diskstats used to show stats for all disks whether they're
zero-sized or not and their non-zero partitions.  Commit
074a7aca7afa6f230104e8e65eba3420263714a5 accidentally changed the
behavior such that it doesn't print out zero sized disks.  This patch
implements DISK_PITER_INCL_EMPTY_PART0 flag to partition iterator and
uses it in diskstats_show() such that empty part0 is shown in
/proc/diskstats.

Reported and bisectd by Dianel Collins.

Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Daniel Collins <solemnwarning@solemnwarning.no-ip.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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