linux-kernel - [PATCH] mm/memblock: If nr

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Date:	Sat,  9 Jan 2016 06:33:40 -0500
From:	nimisolo <nimisolo@...il.com>
To:	akpm@...ux-foundation.org, kuleshovmail@...il.com,
	penberg@...nel.org, tony.luck@...el.com, mgorman@...e.de,
	tangchen@...fujitsu.com, weiyang@...ux.vnet.ibm.com
Cc:	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	nimisolo <nimisolo@...il.com>
Subject: [PATCH] mm/memblock: If nr_new is 0 just return

If nr_new is 0 which means there's no region would be added,
so just return to the caller.

Signed-off-by: nimisolo <nimisolo@...il.com>
---
 mm/memblock.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/mm/memblock.c b/mm/memblock.c
index d300f13..9a30077 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -588,6 +588,9 @@ repeat:
 					       nid, flags);
 	}
 
+	if (!nr_new)
+		return 0;
+
 	/*
 	 * If this was the first round, resize array and repeat for actual
 	 * insertions; otherwise, merge and return.
-- 
2.5.0