From: Pavel Begunkov Date: Sun, 15 Aug 2021 09:40:20 +0000 (+0100) Subject: io_uring: optimise initial ltimeout refcounting X-Git-Tag: v5.15-rc1~184^2~30 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=fb6820998f57a3e63a382a322530fa28522a2bba;p=thirdparty%2Flinux.git io_uring: optimise initial ltimeout refcounting Linked timeouts are never refcounted when it comes to the first call to __io_prep_linked_timeout(), so save an io_ref_get() and set the desired value directly. Signed-off-by: Pavel Begunkov Link: https://lore.kernel.org/r/177b24cc62ffbb42d915d6eb9e8876266e4c0d5a.1628981736.git.asml.silence@gmail.com Signed-off-by: Jens Axboe --- diff --git a/fs/io_uring.c b/fs/io_uring.c index 5b95ab661f311..005fc06f89b94 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -1312,8 +1312,7 @@ static struct io_kiocb *__io_prep_linked_timeout(struct io_kiocb *req) /* linked timeouts should have two refs once prep'ed */ io_req_set_refcount(req); - io_req_set_refcount(nxt); - req_ref_get(nxt); + __io_req_set_refcount(nxt, 2); nxt->timeout.head = req; nxt->flags |= REQ_F_LTIMEOUT_ACTIVE;