io_uring: refactor io_wake_function

Remove a local variable ctx in io_wake_function(), we don't need it if
io_should_wake() triggers it to wake up.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/e60eb1008aebe286aab7d34c772ed01c447bddb1.1673274244.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/io_uring/io_uring.c b/io_uring/io_uring.c
index fdea6fbc3fadde94fd6bd429b05527ce99effe50..5e1a0845e4b6e0272c58a983bc68128c3b80f315 100644 (file)
--- a/io_uring/io_uring.c
+++ b/io_uring/io_uring.c
@@ -2439,15 +2439,13 @@ static inline bool io_should_wake(struct io_wait_queue *iowq)
 static int io_wake_function(struct wait_queue_entry *curr, unsigned int mode,
                            int wake_flags, void *key)
 {
-       struct io_wait_queue *iowq = container_of(curr, struct io_wait_queue,
-                                                       wq);
-       struct io_ring_ctx *ctx = iowq->ctx;
+       struct io_wait_queue *iowq = container_of(curr, struct io_wait_queue, wq);
 
        /*
         * Cannot safely flush overflowed CQEs from here, ensure we wake up
         * the task, and the next invocation will do it.
         */
-       if (io_should_wake(iowq) || io_has_work(ctx))
+       if (io_should_wake(iowq) || io_has_work(iowq->ctx))
                return autoremove_wake_function(curr, mode, wake_flags, key);
        return -1;
 }