mm/memcontrol: Replace local_irq_disable with local locks

There are a few local_irq_disable() which then take sleeping locks. This
patch converts them local locks.

[bigeasy: Move unlock after memcg_check_events() in mem_cgroup_swapout(),
	pointed out by Matt Fleming <matt@codeblueprint.co.uk>]
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>