[PATCH 5.10 01/54] io_uring: simplify io_task_match()

Greg Kroah-Hartman
2021-02-11T16:12:03Z

From: Pavel Begunkov <asml.silence@gmail.com>

[ 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>
---
fs/io_uring.c | 6 +-----
1 file changed, 1 insertion(+), 5 deletions(-)

--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -1472,11 +1472,7 @@ static bool io_task_match(struct io_kioc

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);
}

/*