Commit 6b187d02 authored Oct 25, 2012 by David Rientjes Committed by Linus Torvalds Oct 25, 2012

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



Commit 957f822a ("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>

parent f2302505

mm/page_alloc.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -1809,11 +1809,11 @@ 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 */

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