[PATCH v2] mm/khugepaged: Remove redundant try_to_freeze()

[Kevin Hao <haokexin@gmail.com>]

A freezable kernel thread can enter frozen state during freezing by
either calling try_to_freeze() or using wait_event_freezable() and its
variants. However, there is no need to use both methods simultaneously.
The freezable wait variants have been used in khugepaged_wait_work()
and khugepaged_alloc_sleep(), so remove this redundant
try_to_freeze().

Signed-off-by: Kevin Hao <haokexin@gmail.com>
---
v2: Adjust the patch subject to make it look more unique.

 mm/khugepaged.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/khugepaged.c b/mm/khugepaged.c
index 5bf9a4d0e47e..13c6eadbeda3 100644
--- a/mm/khugepaged.c
+++ b/mm/khugepaged.c
@@ -2500,7 +2500,7 @@ static void khugepaged_do_scan(struct collapse_control *cc)
 	while (true) {
 		cond_resched();
 
-		if (unlikely(kthread_should_stop() || try_to_freeze()))
+		if (unlikely(kthread_should_stop()))
 			break;
 
 		spin_lock(&khugepaged_mm_lock);
-- 
2.39.2