__thaw_task() no longer clears frozen flag since commit a3201227f803
(freezer: make freezing() test freeze conditions in effect instead of 
TIF_FREEZE).

Cc: David Rientjes <rient...@google.com>
Cc: "Rafael J. Wysocki" <r...@rjwysocki.net>
Cc: Tejun Heo <t...@kernel.org>
Cc: Andrew Morton <a...@linux-foundation.org>
Cc: Michal Hocko <mho...@suse.cz>
Reviewed-by: Michal Hocko <mho...@suse.cz>
Signed-off-by: Cong Wang <xiyou.wangc...@gmail.com>
---
 kernel/freezer.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/kernel/freezer.c b/kernel/freezer.c
index dbcb87c..438ecca 100644
--- a/kernel/freezer.c
+++ b/kernel/freezer.c
@@ -161,12 +161,6 @@ void __thaw_task(struct task_struct *p)
 {
        unsigned long flags;
 
-       /*
-        * Clear freezing and kick @p if FROZEN.  Clearing is guaranteed to
-        * be visible to @p as waking up implies wmb.  Waking up inside
-        * freezer_lock also prevents wakeups from leaking outside
-        * refrigerator.
-        */
        spin_lock_irqsave(&freezer_lock, flags);
        if (frozen(p))
                wake_up_process(p);
-- 
1.8.3.1

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