tree d3482b68a6743609cedcd3a5165a749b0d9ca990
parent 7e69723fef8771a9d57bd27d36281d756130b4b5
author Vivek Goyal <vgoyal@redhat.com> 1306172104 +0200
committer Jens Axboe <jaxboe@fusionio.com> 1306172104 +0200

blk-cgroup: Initialize ioc->cgroup_changed at ioc creation time

If we don't explicitly initialize it to zero, CFQ might think that
cgroup of ioc has changed and it generates lots of unnecessary calls
to call_for_each_cic(changed_cgroup). Fix it.

cfq_get_io_context()
  cfq_ioc_set_cgroup()
     call_for_each_cic(ioc, changed_cgroup)

Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>