io_uring: make apoll_events a __poll_t

apoll_events is fed to vfs_poll and the poll tables, so it should be
a __poll_t.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20220518084005.3255380-5-hch@lst.deSigned-off-by: Jens Axboe <axboe@kernel.dk>

fs/io_uring.c

@@ -1011,7 +1011,7 @@ struct io_kiocb {
 		/* used by request caches, completion batching and iopoll */
 		struct io_wq_work_node	comp_list;
 		/* cache ->apoll->events */
-		int apoll_events;
+		__poll_t apoll_events;
 	};
 	atomic_t			refs;
 	atomic_t			poll_refs;
@@ -6297,7 +6297,7 @@ static void io_apoll_task_func(struct io_kiocb *req, bool *locked)
 		io_req_complete_failed(req, ret);
 }
 
-static void __io_poll_execute(struct io_kiocb *req, int mask, int events)
+static void __io_poll_execute(struct io_kiocb *req, int mask, __poll_t events)
 {
 	req->cqe.res = mask;
 	/*
@@ -6316,7 +6316,8 @@ static void __io_poll_execute(struct io_kiocb *req, int mask, int events)
 	io_req_task_work_add(req, false);
 }
 
-static inline void io_poll_execute(struct io_kiocb *req, int res, int events)
+static inline void io_poll_execute(struct io_kiocb *req, int res,
+		__poll_t events)
 {
 	if (io_poll_get_ownership(req))
 		__io_poll_execute(req, res, events);