From: Wanpeng Li <liwanp@linux.vnet.ibm.com>
Date: Fri, 28 Sep 2012 00:19:14 +0000 (+1000)
Subject: mm/vmscan: fix error number for failed kthread
X-Git-Tag: next-20121004~1^2~337
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=c26e208d61748fe6f9b89b25806552ec75109288;p=karo-tx-linux.git

mm/vmscan: fix error number for failed kthread

Fix the return value while failing to create the kswapd kernel thread.
Also, the error message is prioritized as KERN_ERR.

Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com>
Signed-off-by: Wanpeng Li <liwanp@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

diff --git a/mm/vmscan.c b/mm/vmscan.c
index f6fdae7a8d4c..d16bf5a53266 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -3126,9 +3126,9 @@ int kswapd_run(int nid)
 	if (IS_ERR(pgdat->kswapd)) {
 		/* failure at boot is fatal */
 		BUG_ON(system_state == SYSTEM_BOOTING);
-		printk("Failed to start kswapd on node %d\n",nid);
 		pgdat->kswapd = NULL;
-		ret = -1;
+		pr_err("Failed to start kswapd on node %d\n", nid);
+		ret = PTR_ERR(pgdat->kswapd);
 	}
 	return ret;
 }