From ebe3ddc5ea680d0ca1eee1ac556a0e31e179a47c Mon Sep 17 00:00:00 2001 From: Xiao Guangrong Date: Fri, 28 Sep 2012 10:19:16 +1000 Subject: [PATCH] thp: remove unnecessary khugepaged_thread check Now, khugepaged creation and cancel are completely serial under the protection of khugepaged_mutex, it is impossible that many khugepaged entities are running Signed-off-by: Xiao Guangrong Cc: Andrea Arcangeli Cc: Hugh Dickins Cc: David Rientjes Signed-off-by: Andrew Morton --- mm/huge_memory.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/mm/huge_memory.c b/mm/huge_memory.c index e08305d1ac86..890bc29dd078 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -2397,11 +2397,8 @@ static int khugepaged(void *none) set_freezable(); set_user_nice(current, 19); - while (!kthread_should_stop()) { - VM_BUG_ON(khugepaged_thread != current); + while (!kthread_should_stop()) khugepaged_loop(); - VM_BUG_ON(khugepaged_thread != current); - } spin_lock(&khugepaged_mm_lock); mm_slot = khugepaged_scan.mm_slot; -- 2.39.5