tree d457415cc6c50b386a6876acf0abc4472f0e5630
parent a9e9dc24bbc3e084450a22cf4fb82f5f5d4cbeea
author Tejun Heo <tj@kernel.org> 1239950088 +0200
committer Jens Axboe <jens.axboe@oracle.com> 1240382110 +0200

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>