commit 4741526b83c5d3a3d661d1896f9e7414c5730bcb
author Mel Gorman <mgorman@techsingularity.net> Thu May 19 17:14:44 2016 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> Thu May 19 19:12:14 2016 -0700
tree dd8f5b4f6a8be7fc321fce60462b669f4a30f75d
parent 4e6118016eb7986109ad61b00186579f384f956a

mm, page_alloc: restore the original nodemask if the fast path allocation failed

The page allocator fast path uses either the requested nodemask or
cpuset_current_mems_allowed if cpusets are enabled.  If the allocation
context allows watermarks to be ignored then it can also ignore memory
policies.  However, on entering the allocator slowpath the nodemask may
still be cpuset_current_mems_allowed and the policies are enforced.
This patch resets the nodemask appropriately before entering the
slowpath.

Link: http://lkml.kernel.org/r/20160504143628.GU2858@techsingularity.net
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Cc: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>