io_uring/poll: lockdep annote io_poll_req_insert_locked

Add a lockdep annotation in io_poll_req_insert_locked().

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/8115d8e702733754d0aea119e9b5bb63d1eb8b24.1668184658.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/io_uring/poll.c b/io_uring/poll.c
index 97c214a..f500506 100644 (file)
--- 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);
 }