diff options
Diffstat (limited to 'kernel/task_work.c')
-rw-r--r-- | kernel/task_work.c | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/kernel/task_work.c b/kernel/task_work.c index d513051fcca2..836a72a66fba 100644 --- a/kernel/task_work.c +++ b/kernel/task_work.c | |||
@@ -96,20 +96,16 @@ void task_work_run(void) | |||
96 | * work->func() can do task_work_add(), do not set | 96 | * work->func() can do task_work_add(), do not set |
97 | * work_exited unless the list is empty. | 97 | * work_exited unless the list is empty. |
98 | */ | 98 | */ |
99 | raw_spin_lock_irq(&task->pi_lock); | ||
99 | do { | 100 | do { |
100 | work = READ_ONCE(task->task_works); | 101 | work = READ_ONCE(task->task_works); |
101 | head = !work && (task->flags & PF_EXITING) ? | 102 | head = !work && (task->flags & PF_EXITING) ? |
102 | &work_exited : NULL; | 103 | &work_exited : NULL; |
103 | } while (cmpxchg(&task->task_works, work, head) != work); | 104 | } while (cmpxchg(&task->task_works, work, head) != work); |
105 | raw_spin_unlock_irq(&task->pi_lock); | ||
104 | 106 | ||
105 | if (!work) | 107 | if (!work) |
106 | break; | 108 | break; |
107 | /* | ||
108 | * Synchronize with task_work_cancel(). It can't remove | ||
109 | * the first entry == work, cmpxchg(task_works) should | ||
110 | * fail, but it can play with *work and other entries. | ||
111 | */ | ||
112 | raw_spin_unlock_wait(&task->pi_lock); | ||
113 | 109 | ||
114 | do { | 110 | do { |
115 | next = work->next; | 111 | next = work->next; |