mm: get rid of __GFP_OTHER_NODE

The flag was introduced by commit 78afd5612deb ("mm: add
__GFP_OTHER_NODE flag") to allow proper accounting of remote node
allocations done by kernel daemons on behalf of a process - e.g.
khugepaged.

After "mm: fix remote numa hits statistics" we do not need and actually
use the flag so we can safely remove it because all allocations which
are satisfied from their "home" node are accounted properly.

[mhocko@suse.com: fix build]
Link: http://lkml.kernel.org/r/20170106122225.GK5556@dhcp22.suse.cz
Link: http://lkml.kernel.org/r/20170102153057.9451-3-mhocko@kernel.org
Signed-off-by: Michal Hocko <mhocko@suse.com>
Acked-by: Mel Gorman <mgorman@suse.de>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Taku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 2 insertions, 3 deletions

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index cba2a64792e6..872caae544ef 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -2584,8 +2584,7 @@ int __isolate_free_page(struct page *page, unsigned int order)
  *
  * Must be called with interrupts disabled.
  */
-static inline void zone_statistics(struct zone *preferred_zone, struct zone *z,
-                                                                gfp_t flags)
+static inline void zone_statistics(struct zone *preferred_zone, struct zone *z)
 {
 #ifdef CONFIG_NUMA
         enum zone_stat_item local_stat = NUMA_LOCAL;
@@ -2667,7 +2666,7 @@ struct page *buffered_rmqueue(struct zone *preferred_zone,
         }
 
         __count_zid_vm_events(PGALLOC, page_zonenum(page), 1 << order);
-        zone_statistics(preferred_zone, zone, gfp_flags);
+        zone_statistics(preferred_zone, zone);
         local_irq_restore(flags);
 
         VM_BUG_ON_PAGE(bad_range(zone, page), page);