From 7394161cb8bd26be43ebf0075e3b0197a6c3ca01 Mon Sep 17 00:00:00 2001
From: Pavel Begunkov <asml.silence@gmail.com>
Date: Thu, 1 Apr 2021 15:43:51 +0100
Subject: [PATCH] io_uring: better ref handling in poll_remove_one
Instead of io_put_req() to drop not a final ref, use req_ref_put(),
which is slimmer and will also check the invariant.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/85b5774ce13ae55cc2e705abdc8cbafe1212f1bd.1617287883.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---
fs/io_uring.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/io_uring.c b/fs/io_uring.c
index edb5b9d0fd1a8..e92de7e206c07 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -5244,7 +5244,7 @@ static bool io_poll_remove_waitqs(struct io_kiocb *req)
/* non-poll requests have submit ref still */
do_complete = __io_poll_remove_one(req, &apoll->poll, true);
if (do_complete) {
- io_put_req(req);
+ req_ref_put(req);
kfree(apoll->double_poll);
kfree(apoll);
}
--
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