tree 6dc945631424f22b8044985d15fd949fc45e711a
parent bb0b6dffa2ccfbd9747ad0cc87c7459622896e60
author Mel Gorman <mgorman@suse.de> 1407366440 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1407373280 -0700

mm: page_alloc: abort fair zone allocation policy when remotes nodes are encountered

The purpose of numa_zonelist_order=zone is to preserve lower zones for
use with 32-bit devices.  If locality is preferred then the
numa_zonelist_order=node policy should be used.

Unfortunately, the fair zone allocation policy overrides this by
skipping zones on remote nodes until the lower one is found.  While this
makes sense from a page aging and performance perspective, it breaks the
expected zonelist policy.  This patch restores the expected behaviour
for zone-list ordering.

Signed-off-by: Mel Gorman <mgorman@suse.de>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>