From d516e8a27f1a52c92d39aada03ff92985b1fdf7e Mon Sep 17 00:00:00 2001
From: Ian Moffett <ian@osmora.org>
Date: Fri, 28 Jun 2024 23:19:09 -0400
Subject: kernel: vfs: Add vnode refcount

Signed-off-by: Ian Moffett <ian@osmora.org>
---
 sys/include/sys/vnode.h | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'sys/include')

diff --git a/sys/include/sys/vnode.h b/sys/include/sys/vnode.h
index 545fa2f..3f3b011 100644
--- a/sys/include/sys/vnode.h
+++ b/sys/include/sys/vnode.h
@@ -31,6 +31,7 @@
 #define _SYS_VNODE_H_
 
 #include <sys/types.h>
+#include <sys/atomic.h>
 #include <sys/sio.h>
 
 #if defined(_KERNEL)
@@ -42,8 +43,11 @@ struct vnode {
     int flags;
     void *data;
     const struct vops *vops;
+    uint32_t refcount;
 };
 
+#define vfs_vref(VP) (atomic_inc_int(&(VP)->refcount))
+
 /* Vnode type flags */
 #define VNON    0x00    /* Uninitialized */
 #define VREG    0x01    /* Regular file */
-- 
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