Commit bde304bd authored Nov 05, 2015 by Xishi Qiu Committed by Linus Torvalds Nov 05, 2015

mm/page_alloc.c: skip ZONE_MOVABLE if required_kernelcore is larger than totalpages



If kernelcore was not specified, or the kernelcore size is zero
(required_movablecore >= totalpages), or the kernelcore size is larger
than totalpages, there is no ZONE_MOVABLE.  We should fill the zone with
both kernel memory and movable memory.

Signed-off-by: Xishi Qiu <qiuxishi@huawei.com>
Reviewed-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: David Rientjes <rientjes@google.com>
Cc: Tang Chen <tangchen@cn.fujitsu.com>
Cc: <zhongjiang@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent a2c1aad3

mm/page_alloc.c

+5 −2

Original line number	Diff line number	Diff line
		@@ -5675,8 +5675,11 @@ static void __init find_zone_movable_pfns_for_nodes(void)
		required_kernelcore = max(required_kernelcore, corepages);
		}

		/* If kernelcore was not specified, there is no ZONE_MOVABLE */
		if (!required_kernelcore)
		/*
		* If kernelcore was not specified or kernelcore size is larger
		* than totalpages, there is no ZONE_MOVABLE.
		*/
		if (!required_kernelcore \|\| required_kernelcore >= totalpages)
		goto out;

		/* usable_startpfn is the lowest possible pfn ZONE_MOVABLE can be at */