cfq-iosched: add hierarchical cfq_group statistics
authorTejun Heo <tj@kernel.org>
Wed, 9 Jan 2013 16:05:13 +0000 (08:05 -0800)
committerTejun Heo <tj@kernel.org>
Wed, 9 Jan 2013 16:05:13 +0000 (08:05 -0800)
commit43114018cb0b253fd03c4ff4d42bcdc43389ac1c
treeabe35791e5ab46d944f35112e25570ab861a7e2f
parent0b39920b5f9f3ad37dd259bfa2e9cbca33475b28
cfq-iosched: add hierarchical cfq_group statistics

Unfortunately, at this point, there's no way to make the existing
statistics hierarchical without creating nasty surprises for the
existing users.  Just create recursive counterpart of the existing
stats.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
block/cfq-iosched.c