mm, numa: avoid setting zone_reclaim_mode unless a node is sufficiently distant

Commit 957f822a0ab9 ("mm, numa: reclaim from all nodes within reclaim
distance") caused zone_reclaim_mode to be set for all systems where two
nodes are within RECLAIM_DISTANCE of each other.  This is the opposite
of what we actually want: zone_reclaim_mode should be set if two nodes
are sufficiently distant.

Signed-off-by: David Rientjes <rientjes@google.com>
Reported-by: Julian Wollrath <jwollrath@web.de>
Tested-by: Julian Wollrath <jwollrath@web.de>
Cc: Hugh Dickins <hughd@google.com>
Cc: Patrik Kullman <patrik.kullman@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index b0012ab372a4..5b74de6702e0 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -1809,10 +1809,10 @@ static void __paginginit init_zone_allows_reclaim(int nid)
         int i;
 
         for_each_online_node(i)
-                if (node_distance(nid, i) <= RECLAIM_DISTANCE) {
+                if (node_distance(nid, i) <= RECLAIM_DISTANCE)
                         node_set(i, NODE_DATA(nid)->reclaim_nodes);
+                else
                         zone_reclaim_mode = 1;
-                }
 }
 
 #else   /* CONFIG_NUMA */