lib/mem: introduce a new function set_global_mempolicy()

Fork out a new function set_global_mempolicy() from the
previous testoom() func, which will be useful for other func.

Tested-by: Wanlong Gao <gaowanlong@cn.fujitsu.com>
Signed-off-by: Zhouping Liu <zliu@redhat.com>
Signed-off-by: Wanlong Gao <gaowanlong@cn.fujitsu.com>
3 files changed