From c7aab1a7c52b82d9afd7e03c398eb03dc2aa0507 Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Thu, 1 Apr 2021 19:53:29 -0600 Subject: task_work: add helper for more targeted task_work canceling The only exported helper we have right now is task_work_cancel(), which cancels any task_work from a given task where func matches the queued work item. This is a bit too coarse for some use cases. Add a task_work_cancel_match() that allows to more specifically target individual work items outside of purely the callback function used. task_work_cancel() can be trivially implemented on top of that, hence do so. Reviewed-by: Oleg Nesterov Signed-off-by: Jens Axboe --- include/linux/task_work.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux/task_work.h') diff --git a/include/linux/task_work.h b/include/linux/task_work.h index 0d848a1e9e62..5b8a93f288bb 100644 --- a/include/linux/task_work.h +++ b/include/linux/task_work.h @@ -22,6 +22,8 @@ enum task_work_notify_mode { int task_work_add(struct task_struct *task, struct callback_head *twork, enum task_work_notify_mode mode); +struct callback_head *task_work_cancel_match(struct task_struct *task, + bool (*match)(struct callback_head *, void *data), void *data); struct callback_head *task_work_cancel(struct task_struct *, task_work_func_t); void task_work_run(void); -- cgit