cgroup: add cgroup_subsys->css_e_css_changed()
authorTejun Heo <tj@kernel.org>
Tue, 18 Nov 2014 07:49:51 +0000 (02:49 -0500)
committerTejun Heo <tj@kernel.org>
Tue, 18 Nov 2014 07:49:51 +0000 (02:49 -0500)
commit56c807ba4e91f0980567b6a69de239677879b17f
tree509bdb009fdd4cbc87c75b2138e07600afc357ac
parent7d172cc89b8589e4173d0c73a1ddaae408f29c9d
cgroup: add cgroup_subsys->css_e_css_changed()

Add a new cgroup_subsys operatoin ->css_e_css_changed().  This is
invoked if any of the effective csses seen from the css's cgroup may
have changed.  This will be used to implement cgroup writeback
support.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Zefan Li <lizefan@huawei.com>
include/linux/cgroup.h
kernel/cgroup.c