Revert "Kill task closest in size to memory needed to free"

This reverts commit bf64275485e8f76823e25e8e952ad43baceff0ec.
zram swap optimizations: added zram swap optimizations for Linux 3.0/3.1

code cherry-picked from Samsung Galaxy Note 2 kernels

Signed-off-by: Paul Reioux <reioux@gmail.com>
Enable CONFIG_ZRAM_FOR_ANDROID in defconfig
include/linux/highmem.h: remove the second argument of k[un]map_atomic()

Signed-off-by: Cong Wang <amwang@redhat.com>
arm: remove the second argument of k[un]map_atomic()

Signed-off-by: Cong Wang <amwang@redhat.com>