memcg: clean up swap accounting initialization code

Memcg swap accounting is currently enabled by enable_swap_cgroup when
the root cgroup is created.  mem_cgroup_init acts as a memcg subsystem
initializer which sounds like a much better place for enable_swap_cgroup
as well.  We already register memsw files from there so it makes a lot
of sense to merge those two into a single enable_swap_cgroup function.

This patch doesn't introduce any semantic changes.

Signed-off-by: Michal Hocko <[email protected]>
Cc: Zhouping Liu <[email protected]>
Cc: Kamezawa Hiroyuki <[email protected]>
Cc: David Rientjes <[email protected]>
Cc: Li Zefan <[email protected]>
Cc: CAI Qian <[email protected]>
Cc: Tejun Heo <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

0 files changed, 0 insertions, 0 deletions