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-rw-r--r--kernel/task_work.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/task_work.c b/kernel/task_work.c
index 65bd3c92d6f3..6ee09856f725 100644
--- a/kernel/task_work.c
+++ b/kernel/task_work.c
@@ -25,7 +25,7 @@ struct callback_head *
25task_work_cancel(struct task_struct *task, task_work_func_t func) 25task_work_cancel(struct task_struct *task, task_work_func_t func)
26{ 26{
27 struct callback_head **pprev = &task->task_works; 27 struct callback_head **pprev = &task->task_works;
28 struct callback_head *work = NULL; 28 struct callback_head *work;
29 unsigned long flags; 29 unsigned long flags;
30 /* 30 /*
31 * If cmpxchg() fails we continue without updating pprev. 31 * If cmpxchg() fails we continue without updating pprev.
@@ -35,7 +35,7 @@ task_work_cancel(struct task_struct *task, task_work_func_t func)
35 */ 35 */
36 raw_spin_lock_irqsave(&task->pi_lock, flags); 36 raw_spin_lock_irqsave(&task->pi_lock, flags);
37 while ((work = ACCESS_ONCE(*pprev))) { 37 while ((work = ACCESS_ONCE(*pprev))) {
38 read_barrier_depends(); 38 smp_read_barrier_depends();
39 if (work->func != func) 39 if (work->func != func)
40 pprev = &work->next; 40 pprev = &work->next;
41 else if (cmpxchg(pprev, work, work->next) == work) 41 else if (cmpxchg(pprev, work, work->next) == work)