From: Xishi Qiu <qiuxishi@huawei.com>
To: Andrew Morton <akpm@linux-foundation.org>,
Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>,
Mel Gorman <mgorman@suse.de>,
David Rientjes <rientjes@google.com>,
Tang Chen <tangchen@cn.fujitsu.com>,
zhongjiang@huawei.com
Cc: Linux MM <linux-mm@kvack.org>, LKML <linux-kernel@vger.kernel.org>
Subject: [PATCH] mm: skip if required_kernelcore is larger than totalpages
Date: Thu, 8 Oct 2015 10:21:05 +0800 [thread overview]
Message-ID: <5615D311.5030908@huawei.com> (raw)
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>
---
mm/page_alloc.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index af3c9bd..6a6da0d 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -5674,8 +5674,11 @@ 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 */
--
2.0.0
--
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next reply other threads:[~2015-10-08 2:35 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-08 2:21 Xishi Qiu [this message]
2015-10-09 15:41 ` [PATCH] mm: skip if required_kernelcore is larger than totalpages Yasuaki Ishimatsu
2015-10-12 1:37 ` Xishi Qiu
2015-10-14 2:50 ` Tang Chen
2015-10-14 3:28 ` Xishi Qiu
2015-10-14 4:03 ` Tang Chen
2015-10-16 16:58 ` Yasuaki Ishimatsu
2015-10-14 2:31 ` David Rientjes
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