From: Jens Axboe Date: Wed, 31 Jan 2024 17:39:05 +0000 (-0700) Subject: io_uring: remove next io_kiocb fetch in task_work running X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=670d9d3df8808b39430ade7a04b38363971167f5;p=linux.git io_uring: remove next io_kiocb fetch in task_work running We just reversed the task_work list and that will have touched requests as well, just get rid of this optimization as it should not make a difference anymore. Signed-off-by: Jens Axboe --- diff --git a/io_uring/io_uring.c b/io_uring/io_uring.c index 4678d9ec810be..007cef9738eee 100644 --- a/io_uring/io_uring.c +++ b/io_uring/io_uring.c @@ -1184,8 +1184,6 @@ static unsigned int handle_tw_list(struct llist_node *node, struct io_kiocb *req = container_of(node, struct io_kiocb, io_task_work.node); - prefetch(container_of(next, struct io_kiocb, io_task_work.node)); - if (req->ctx != *ctx) { ctx_flush_and_put(*ctx, ts); *ctx = req->ctx; @@ -1408,7 +1406,6 @@ again: struct llist_node *next = node->next; struct io_kiocb *req = container_of(node, struct io_kiocb, io_task_work.node); - prefetch(container_of(next, struct io_kiocb, io_task_work.node)); INDIRECT_CALL_2(req->io_task_work.func, io_poll_task_func, io_req_rw_complete, req, ts);