[PATCHSET v2] mm, memcontrol: Implement memory.swap.events

[Tejun Heo]

Hello,

Rebased on top of e27be240df53 ("mm: memcg: make sure memory.events is
uptodate when waking pollers").

This patchset implements memory.swap.events which contains max and
fail events so that userland can monitor and respond to swap running
out.  It contains the following two patches.

 0001-mm-memcontrol-Move-swap-charge-handling-into-get_swa.patch
 0002-mm-memcontrol-Implement-memory.swap.events.patch

This patchset is on top of the current linus#master
(a27fc14219f2e3c4a46ba9177b04d9b52c875532).

Thanks.

-- 
tejun