From: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Date: Fri, 28 Sep 2012 00:19:16 +0000 (+1000)
Subject: thp: remove unnecessary check in start_khugepaged
X-Git-Tag: next-20121004~1^2~333
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=d9429f1e8dafc294a187ea008db8c99a9c34a60e;p=karo-tx-linux.git

thp: remove unnecessary check in start_khugepaged

The check is unnecessary since if mm_slot_cache or mm_slots_hash
initialize failed, no sysfs interface will be created

Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index 13a1ff52c42a..2db4aef80f9d 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -141,10 +141,7 @@ static int start_khugepaged(void)
 	int err = 0;
 	if (khugepaged_enabled()) {
 		int wakeup;
-		if (unlikely(!mm_slot_cache || !mm_slots_hash)) {
-			err = -ENOMEM;
-			goto out;
-		}
+
 		mutex_lock(&khugepaged_mutex);
 		if (!khugepaged_thread)
 			khugepaged_thread = kthread_run(khugepaged, NULL,
@@ -164,7 +161,7 @@ static int start_khugepaged(void)
 	} else
 		/* wakeup to exit */
 		wake_up_interruptible(&khugepaged_wait);
-out:
+
 	return err;
 }