Module Name: src
Committed By: riastradh
Date: Sat Apr 9 23:45:45 UTC 2022
Modified Files:
src/sys/kern: vfs_vnode.c
Log Message:
vfs(9): Add XXX comment about unclear membar_enter.
To generate a diff of this commit:
cvs rdiff -u -r1.142 -r1.143 src/sys/kern/vfs_vnode.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/kern/vfs_vnode.c
diff -u src/sys/kern/vfs_vnode.c:1.142 src/sys/kern/vfs_vnode.c:1.143
--- src/sys/kern/vfs_vnode.c:1.142 Sat Apr 9 23:38:33 2022
+++ src/sys/kern/vfs_vnode.c Sat Apr 9 23:45:45 2022
@@ -1,4 +1,4 @@
-/* $NetBSD: vfs_vnode.c,v 1.142 2022/04/09 23:38:33 riastradh Exp $ */
+/* $NetBSD: vfs_vnode.c,v 1.143 2022/04/09 23:45:45 riastradh Exp $ */
/*-
* Copyright (c) 1997-2011, 2019, 2020 The NetBSD Foundation, Inc.
@@ -148,7 +148,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: vfs_vnode.c,v 1.142 2022/04/09 23:38:33 riastradh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: vfs_vnode.c,v 1.143 2022/04/09 23:45:45 riastradh Exp $");
#ifdef _KERNEL_OPT
#include "opt_pax.h"
@@ -273,6 +273,8 @@ _vstate_assert(vnode_t *vp, enum vnode_s
/*
* Prevent predictive loads from the CPU, but check the state
* without loooking first.
+ *
+ * XXX what does this pair with?
*/
membar_enter();
if (state == VS_ACTIVE && refcnt > 0 &&
