Merge branch 'akpm' (patches from Andrew)

Merge fixes from Andrew Morton:
 "2 patches.

  Subsystems affected by this patch series: mm/memory-hotplug and
  MAINTAINERS"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  MAINTAINERS: exfat: update my email address
  mm/memory_hotplug: fix potential permanent lru cache disable