linux-kernel - [PATCH AUTOSEL 6.0 44/44] io_uring/poll: lockdep annote io_poll_req_insert

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Message-Id: <20221119021124.1773699-44-sashal@kernel.org>
Date:   Fri, 18 Nov 2022 21:11:24 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Pavel Begunkov <asml.silence@...il.com>,
        Jens Axboe <axboe@...nel.dk>, Sasha Levin <sashal@...nel.org>,
        io-uring@...r.kernel.org
Subject: [PATCH AUTOSEL 6.0 44/44] io_uring/poll: lockdep annote io_poll_req_insert_locked

From: Pavel Begunkov <asml.silence@...il.com>

[ Upstream commit 5576035f15dfcc6cb1cec236db40c2c0733b0ba4 ]

Add a lockdep annotation in io_poll_req_insert_locked().

Signed-off-by: Pavel Begunkov <asml.silence@...il.com>
Link: https://lore.kernel.org/r/8115d8e702733754d0aea119e9b5bb63d1eb8b24.1668184658.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@...nel.dk>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 io_uring/poll.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/io_uring/poll.c b/io_uring/poll.c
index 0d9f49c575e0..810425ec2736 100644
--- a/io_uring/poll.c
+++ b/io_uring/poll.c
@@ -116,6 +116,8 @@ static void io_poll_req_insert_locked(struct io_kiocb *req)
 	struct io_hash_table *table = &req->ctx->cancel_table_locked;
 	u32 index = hash_long(req->cqe.user_data, table->hash_bits);
 
+	lockdep_assert_held(&req->ctx->uring_lock);
+
 	hlist_add_head(&req->hash_node, &table->hbs[index].list);
 }
 
-- 
2.35.1