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authorTejun Heo <tj@kernel.org>2014-11-18 02:49:52 -0500
committerTejun Heo <tj@kernel.org>2014-11-18 02:49:52 -0500
commiteeecbd1971517103e06f11750dd1a9a1dc37e4e6 (patch)
treeace58390ca7f2e7f7530a8a8b23d9449a00ae3be /mm/oom_kill.c
parent56c807ba4e91f0980567b6a69de239677879b17f (diff)
cgroup: implement cgroup_get_e_css()
Implement cgroup_get_e_css() which finds and gets the effective css for the specified cgroup and subsystem combination. This function always returns a valid pinned css. This will be used by cgroup writeback support. While at it, add comment to cgroup_e_css() to explain why that function is different from cgroup_get_e_css() and has to test cgrp->child_subsys_mask instead of cgroup_css(cgrp, ss). Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Zefan Li <lizefan@huawei.com>
Diffstat (limited to 'mm/oom_kill.c')
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