[PATCH 1/4] io_uring: io_rw_reissue lockdep annotations

[Pavel Begunkov <asml.silence@xxxxxxxxx>]

We expect io_rw_reissue() to take place only during submission with
uring_lock held. Add a lockdep annotation to check that invariant.

Signed-off-by: Pavel Begunkov <asml.silence@xxxxxxxxx>
---
 fs/io_uring.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/io_uring.c b/fs/io_uring.c
index cb57e0360fcb..55ba1922a349 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -2692,6 +2692,8 @@ static bool io_rw_reissue(struct io_kiocb *req, long res)
 	if ((res != -EAGAIN && res != -EOPNOTSUPP) || io_wq_current_is_worker())
 		return false;
 
+	lockdep_assert_held(&req->ctx->uring_lock);
+
 	ret = io_sq_thread_acquire_mm_files(req->ctx, req);
 
 	if (io_resubmit_prep(req, ret)) {
-- 
2.24.0