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io_uring: remove unnecessary PF_EXITING check 

We prefer nornal task_works even if it would fail requests inside. Kill
a PF_EXITING check in io_req_task_work_add(), task_work_add() handles
well dying tasks, i.e. return error when can't enqueue due to late
stages of do_exit().

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/fc14297e8441cd8f5d1743a2488cf0df09bf48ac.1628471125.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov 2021-08-09 13:04:06 +01:00 committed by Jens Axboe
parent ebc11b6c6b
commit 2215bed924
1 changed files with 1 additions and 3 deletions
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4
fs/io_uring.c
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@ -2006,8 +2006,6 @@ static void io_req_task_work_add(struct io_kiocb *req)
if (test_bit(0, &tctx->task_state) ||
test_and_set_bit(0, &tctx->task_state))
return;
if (unlikely(tsk->flags & PF_EXITING))
goto fail;
/*
* SQPOLL kernel thread doesn't need notification, just a wakeup. For
@ -2020,7 +2018,7 @@ static void io_req_task_work_add(struct io_kiocb *req)
wake_up_process(tsk);
return;
}
fail:
clear_bit(0, &tctx->task_state);
spin_lock_irqsave(&tctx->task_lock, flags);
node = tctx->task_list.first;