From cbd287c09351f1d3a4b3cb9167a2616a11390d32 Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Mon, 3 Aug 2020 17:06:21 -0600 Subject: [PATCH] io_uring: io_async_buf_func() need not test page bit Since we don't do exclusive waits or wakeups, we know that the bit is always going to be set. Kill the test. Also see commit: 2a9127fcf229 ("mm: rewrite wait_on_page_bit_common() logic") Signed-off-by: Jens Axboe --- fs/io_uring.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/fs/io_uring.c b/fs/io_uring.c index 2a3af95be4ca..bb4f0b2d5138 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -2965,10 +2965,6 @@ static int io_async_buf_func(struct wait_queue_entry *wait, unsigned mode, if (!wake_page_match(wpq, key)) return 0; - /* Stop waking things up if the page is locked again */ - if (test_bit(key->bit_nr, &key->page->flags)) - return -1; - list_del_init(&wait->entry); init_task_work(&req->task_work, io_req_task_submit); -- 2.11.0