tree 5472bba04490da05fa6ca8f780431b37bd7375cb
parent 852c788f8365062c8a383c5a93f7f7289977cb50
author Tejun Heo <tj@kernel.org> 1330982128 -0800
committer Jens Axboe <axboe@kernel.dk> 1331065644 +0100

block: make block cgroup policies follow bio task association

Implement bio_blkio_cgroup() which returns the blkcg associated with
the bio if exists or %current's blkcg, and use it in blk-throttle and
cfq-iosched propio.  This makes both cgroup policies honor task
association for the bio instead of always assuming %current.

As nobody is using bio_set_task() yet, this doesn't introduce any
behavior change.

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