io_uring: remove not needed PF_EXITING check

Since cancellation got moved before exit_signals(), there is no one left
who can call io_run_task_work() with PF_EXIING set, so remove the check.
Note that __io_req_task_submit() still needs a similar check.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/f7f305ececb1e6044ea649fb983ca754805bb884.1624739600.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/fs/io_uring.c b/fs/io_uring.c
index 80b7a6f04841e14d7dade8c57994650a3f2631d8..ce88ad58955ad7dc7dfbcb30fc57d20998fa3a5e 100644 (file)
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -2235,12 +2235,6 @@ static inline unsigned int io_put_rw_kbuf(struct io_kiocb *req)
 
 static inline bool io_run_task_work(void)
 {
-       /*
-        * Not safe to run on exiting task, and the task_work handling will
-        * not add work to such a task.
-        */
-       if (unlikely(current->flags & PF_EXITING))
-               return false;
        if (current->task_works) {
                __set_current_state(TASK_RUNNING);
                task_work_run();
@@ -9020,7 +9014,8 @@ static void io_uring_try_cancel_requests(struct io_ring_ctx *ctx,
                ret |= io_cancel_defer_files(ctx, task, cancel_all);
                ret |= io_poll_remove_all(ctx, task, cancel_all);
                ret |= io_kill_timeouts(ctx, task, cancel_all);
-               ret |= io_run_task_work();
+               if (task)
+                       ret |= io_run_task_work();
                ret |= io_run_ctx_fallback(ctx);
                if (!ret)
                        break;