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authorTejun Heo <tj@kernel.org>2013-08-08 20:11:24 -0400
committerTejun Heo <tj@kernel.org>2013-08-08 20:11:24 -0400
commit182446d087906de40e514573a92a97b203695f71 (patch)
tree6aee96219c82d0a64b9d389c50666c1ce0ec27ee /mm/vmpressure.c
parent67f4c36f83455b253445b2cb28ac9a2c4f85d99a (diff)
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cgroup: pass around cgroup_subsys_state instead of cgroup in file methods
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 <tj@kernel.org> Acked-by: Li Zefan <lizefan@huawei.com> Acked-by: Michal Hocko <mhocko@suse.cz> Acked-by: Vivek Goyal <vgoyal@redhat.com> Acked-by: Aristeu Rozanski <aris@redhat.com> Acked-by: Daniel Wagner <daniel.wagner@bmw-carit.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Balbir Singh <bsingharora@gmail.com> Cc: Matt Helsley <matthltc@us.ibm.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'mm/vmpressure.c')
-rw-r--r--mm/vmpressure.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/vmpressure.c b/mm/vmpressure.c
index 7f1654d3cec7..2a8a736e95cc 100644
--- a/mm/vmpressure.c
+++ b/mm/vmpressure.c
@@ -81,8 +81,8 @@ static struct vmpressure *cg_to_vmpressure(struct cgroup *cg)
static struct vmpressure *vmpressure_parent(struct vmpressure *vmpr)
{
- struct cgroup *cg = vmpressure_to_css(vmpr)->cgroup;
- struct mem_cgroup *memcg = mem_cgroup_from_cont(cg);
+ struct cgroup_subsys_state *css = vmpressure_to_css(vmpr);
+ struct mem_cgroup *memcg = mem_cgroup_from_css(css);
memcg = parent_mem_cgroup(memcg);
if (!memcg)