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@xxxxxxxxx> --- io_uring/io_uring.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) 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); -- 2.43.0
