[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <20200608230607.3361041-52-sashal@kernel.org>
Date: Mon, 8 Jun 2020 19:02:25 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc: Jens Axboe <axboe@...nel.dk>, Sasha Levin <sashal@...nel.org>,
linux-fsdevel@...r.kernel.org, io-uring@...r.kernel.org
Subject: [PATCH AUTOSEL 5.7 052/274] io_uring: cleanup io_poll_remove_one() logic
From: Jens Axboe <axboe@...nel.dk>
[ Upstream commit 3bfa5bcb26f0b52d7ae8416aa0618fff21aceaaf ]
We only need apoll in the one section, do the juggling with the work
restoration there. This removes a special case further down as well.
No functional changes in this patch.
Signed-off-by: Jens Axboe <axboe@...nel.dk>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
fs/io_uring.c | 27 +++++++++++++--------------
1 file changed, 13 insertions(+), 14 deletions(-)
diff --git a/fs/io_uring.c b/fs/io_uring.c
index bb25e3997d41..03147b6694fd 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -4344,32 +4344,31 @@ static bool __io_poll_remove_one(struct io_kiocb *req,
do_complete = true;
}
spin_unlock(&poll->head->lock);
+ hash_del(&req->hash_node);
return do_complete;
}
static bool io_poll_remove_one(struct io_kiocb *req)
{
- struct async_poll *apoll = NULL;
bool do_complete;
if (req->opcode == IORING_OP_POLL_ADD) {
do_complete = __io_poll_remove_one(req, &req->poll);
} else {
- apoll = req->apoll;
+ struct async_poll *apoll = req->apoll;
+
/* non-poll requests have submit ref still */
- do_complete = __io_poll_remove_one(req, &req->apoll->poll);
- if (do_complete)
+ do_complete = __io_poll_remove_one(req, &apoll->poll);
+ if (do_complete) {
io_put_req(req);
- }
-
- hash_del(&req->hash_node);
-
- if (do_complete && apoll) {
- /*
- * restore ->work because we need to call io_req_work_drop_env.
- */
- memcpy(&req->work, &apoll->work, sizeof(req->work));
- kfree(apoll);
+ /*
+ * restore ->work because we will call
+ * io_req_work_drop_env below when dropping the
+ * final reference.
+ */
+ memcpy(&req->work, &apoll->work, sizeof(req->work));
+ kfree(apoll);
+ }
}
if (do_complete) {
--
2.25.1
Powered by blists - more mailing lists