From 81ac903ce39ae1c96d28da3d7af29f364296b4cf Mon Sep 17 00:00:00 2001
From: dzwdz
Date: Thu, 14 Jul 2022 16:47:40 +0200
Subject: kernel/driver/serial: allow writes even with pending reads

---
 src/kernel/vfs/request.h | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'src/kernel/vfs/request.h')

diff --git a/src/kernel/vfs/request.h b/src/kernel/vfs/request.h
index 29f1ee9..fc1ef08 100644
--- a/src/kernel/vfs/request.h
+++ b/src/kernel/vfs/request.h
@@ -55,6 +55,9 @@ struct vfs_request {
 	struct vfs_backend *backend;
 
 	struct vfs_request *queue_next;
+	struct vfs_request *postqueue_next; /* used by kernel backends */
+	/* only one of these queues is in use at a given moment, they could
+	 * be merged into a single field */
 };
 
 /** Assigns the vfs_request to the caller, and dispatches the call */
-- 
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