io_uring/msg: rename io_double_lock_ctx()

io_double_lock_ctx() doesn't lock both rings. Rename it to prevent any
future confusion.

Signed-off-by: Pavel Begunkov <[email protected]>
Link: https://lore.kernel.org/r/9e5defa000efd9b0f5e169cbb6bad4994d46ec5c.1743190078.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <[email protected]>

Author: isilence

io_uring/msg_ring.c

@@ -38,8 +38,8 @@ static void io_double_unlock_ctx(struct io_ring_ctx *octx)
 	mutex_unlock(&octx->uring_lock);
 }
 
-static int io_double_lock_ctx(struct io_ring_ctx *octx,
-			      unsigned int issue_flags)
+static int io_lock_external_ctx(struct io_ring_ctx *octx,
+				unsigned int issue_flags)
 {
 	/*
 	 * To ensure proper ordering between the two ctxs, we can only
@@ -154,7 +154,7 @@ static int __io_msg_ring_data(struct io_ring_ctx *target_ctx,
 
 	ret = -EOVERFLOW;
 	if (target_ctx->flags & IORING_SETUP_IOPOLL) {
-		if (unlikely(io_double_lock_ctx(target_ctx, issue_flags)))
+		if (unlikely(io_lock_external_ctx(target_ctx, issue_flags)))
 			return -EAGAIN;
 	}
 	if (io_post_aux_cqe(target_ctx, msg->user_data, msg->len, flags))
@@ -199,7 +199,7 @@ static int io_msg_install_complete(struct io_kiocb *req, unsigned int issue_flag
 	struct file *src_file = msg->src_file;
 	int ret;
 
-	if (unlikely(io_double_lock_ctx(target_ctx, issue_flags)))
+	if (unlikely(io_lock_external_ctx(target_ctx, issue_flags)))
 		return -EAGAIN;
 
 	ret = __io_fixed_fd_install(target_ctx, src_file, msg->dst_fd);