[PATCH] set correct numa_zonelist_order string when configured on the kernel command line

["Volodymyr G. Lukiianyk" <volodymyrgl@gmail.com>]

When numa_zonelist_order parameter is set to "node" or "zone" on the command line
it's still showing as "default" in sysctl. That's because early_param parsing
function changes only user_zonelist_order variable. Fix this by copying
user-provided string to numa_zonelist_order if it was successfully parsed.

Signed-off-by: Volodymyr G Lukiianyk <volodymyrgl@gmail.com>

---

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index ff7e158..ddb81af 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -2585,9 +2585,16 @@ static int __parse_numa_zonelist_order(char *s)

 static __init int setup_numa_zonelist_order(char *s)
 {
-	if (s)
-		return __parse_numa_zonelist_order(s);
-	return 0;
+	int ret;
+
+	if (!s)
+		return 0;
+
+	ret = __parse_numa_zonelist_order(s);
+	if (ret == 0)
+		strlcpy(numa_zonelist_order, s, NUMA_ZONELIST_ORDER_LEN);
+
+	return ret;
 }
 early_param("numa_zonelist_order", setup_numa_zonelist_order);


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