tree 4fbbb4a62793e72d9dbe44c71db0ea75f54cc21b
parent 2da440a26ce4743bd3e71ba964ba3f983d09bba5
author Tejun Heo <tj@kernel.org> 1392137569 -0500
committer Tejun Heo <tj@kernel.org> 1392137569 -0500

cgroup: introduce cgroup_ino()

mm/memory-failure.c::hwpoison_filter_task() has been reaching into
cgroup to extract the associated ino to be used as a filtering
criterion.  This is an implementation detail which shouldn't be
depended upon from outside cgroup proper and is about to change with
the scheduled kernfs conversion.

This patch introduces a proper interface to determine the associated
ino, cgroup_ino(), and updates hwpoison_filter_task() to use it
instead of reaching directly into cgroup.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Li Zefan <lizefan@huawei.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Wu Fengguang <fengguang.wu@intel.com>