On Thu, Aug 01, 2013 at 05:49:50PM -0400, Tejun Heo wrote:

cgroup is currently in the process of transitioning to using struct
cgroup_subsys_state * as the primary handle instead of struct cgroup.
Please see the previous commit which converts the subsystem methods
for rationale.

This patch converts all cftype file operations to take @css instead of
@cgroup.  cftypes for the cgroup core files don't have their subsytem
pointer set.  These will automatically use the dummy_css added by the
previous patch and can be converted the same way.

Most subsystem conversions are straight forwards but there are some
interesting ones.

* freezer: update_if_frozen() is also converted to take @css instead
  of @cgroup for consistency.  This will make the code look simpler
  too once iterators are converted to use css.

* memory/vmpressure: mem_cgroup_from_css() needs to be exported to
  vmpressure while mem_cgroup_from_cont() can be made static.
  Updated accordingly.

* cpu: cgroup_tg() doesn't have any user left.  Removed.

* cpuacct: cgroup_ca() doesn't have any user left.  Removed.

* hugetlb: hugetlb_cgroup_form_cgroup() doesn't have any user left.
  Removed.

* net_cls: cgrp_cls_state() doesn't have any user left.  Removed.

Signed-off-by: Tejun Heo <redacted>
Cc: Li Zefan <redacted>
Cc: Peter Zijlstra <redacted>
Cc: Ingo Molnar <redacted>
Cc: Johannes Weiner <redacted>
Cc: Michal Hocko <redacted>
Cc: Balbir Singh <redacted>
Cc: Aristeu Rozanski <redacted>
Cc: Matt Helsley <matthltc-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
Cc: Daniel Wagner <redacted>
Cc: Vivek Goyal <redacted>
Cc: Jens Axboe <axboe-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org>
Cc: Steven Rostedt <redacted>
---
 block/blk-cgroup.c         |   6 +-
 block/blk-throttle.c       |  32 ++++-----
 block/cfq-iosched.c        |  90 ++++++++++++-------------

blk-cgroup.c, blk-throttle.c and cfq-iosched.c bits look good to me.

Acked-by: Vivek Goyal <redacted>

Vivek