diff mbox series

[04/10] io_uring: handle traditional task_work in FIFO order

Message ID 20240206162726.644202-5-axboe@kernel.dk (mailing list archive)
State New
Headers show
Series Various network improvements | expand

Commit Message

Jens Axboe Feb. 6, 2024, 4:24 p.m. UTC 
For local task_work, which is used if IORING_SETUP_DEFER_TASKRUN is set,
we reverse the order of the lockless list before processing the work.
This is done to process items in the order in which they were queued, as
the llist always adds to the head.

Do the same for traditional task_work, so we have the same behavior for
both types.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
---
 io_uring/io_uring.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/io_uring/io_uring.c b/io_uring/io_uring.c
index ced15a13fcbb..47d06bc55c95 100644
--- a/io_uring/io_uring.c
+++ b/io_uring/io_uring.c
@@ -1266,7 +1266,7 @@  void tctx_task_work(struct callback_head *cb)
 
 	node = llist_del_all(&tctx->task_list);
 	if (node)
-		count = handle_tw_list(node, &ctx, &ts);
+		count = handle_tw_list(llist_reverse_order(node), &ctx, &ts);
 
 	ctx_flush_and_put(ctx, &ts);