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

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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>
This commit is contained in:
Xishi Qiu 2015-11-05 18:48:56 -08:00 committed by Linus Torvalds
parent a2c1aad3b5
commit bde304bdf4
1 changed files with 5 additions and 2 deletions
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7
mm/page_alloc.c
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@ -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 */