From: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Date: Mon, 8 Oct 2012 23:29:38 +0000 (-0700)
Subject: thp: remove unnecessary check in start_khugepaged
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=637e3a27ec2c84f7ecd083fa6943da2f19eb5e9f;p=openwrt%2Fstaging%2Fblogic.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>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index 860ea9127851..9833d8ecf38f 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -140,10 +140,7 @@ 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,
@@ -163,7 +160,7 @@ static int start_khugepaged(void)
 	} else
 		/* wakeup to exit */
 		wake_up_interruptible(&khugepaged_wait);
-out:
+
 	return err;
 }