io_uring: simplify io_task_match()

[ Upstream commit 06de5f5973c641c7ae033f133ecfaaf64fe633a6 ]

If IORING_SETUP_SQPOLL is set all requests belong to the corresponding
SQPOLL task, so skip task checking in that case and always match.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/fs/io_uring.c b/fs/io_uring.c
index 3b6307f..e08ad56 100644 (file)
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -1472,11 +1472,7 @@ static bool io_task_match(struct io_kiocb *req, struct task_struct *tsk)
 
        if (!tsk || req->task == tsk)
                return true;
-       if (ctx->flags & IORING_SETUP_SQPOLL) {
-               if (ctx->sq_data && req->task == ctx->sq_data->thread)
-                       return true;
-       }
-       return false;
+       return (ctx->flags & IORING_SETUP_SQPOLL);
 }
 
 /*