CVS commit: src/sys/miscfs/genfs

[Masao Uebayashi]

Module Name:    src
Committed By:   uebayasi
Date:           Wed Jan 27 15:18:40 UTC 2010

Modified Files:
        src/sys/miscfs/genfs: genfs_node.h genfs_vnops.c

Log Message:
Add genfs_node_rdtrylock().


To generate a diff of this commit:
cvs rdiff -u -r1.17 -r1.18 src/sys/miscfs/genfs/genfs_node.h
cvs rdiff -u -r1.174 -r1.175 src/sys/miscfs/genfs/genfs_vnops.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/miscfs/genfs/genfs_node.h
diff -u src/sys/miscfs/genfs/genfs_node.h:1.17 src/sys/miscfs/genfs/genfs_node.h:1.18
--- src/sys/miscfs/genfs/genfs_node.h:1.17	Wed May 14 16:49:47 2008
+++ src/sys/miscfs/genfs/genfs_node.h	Wed Jan 27 15:18:40 2010
@@ -1,4 +1,4 @@
-/* $NetBSD: genfs_node.h,v 1.17 2008/05/14 16:49:47 reinoud Exp $ */
+/* $NetBSD: genfs_node.h,v 1.18 2010/01/27 15:18:40 uebayasi Exp $ */
 
 /*
  * Copyright (c) 2001 Chuck Silvers.
@@ -91,6 +91,7 @@
 
 void	genfs_node_wrlock(struct vnode *);
 void	genfs_node_rdlock(struct vnode *);
+void	genfs_node_rdtrylock(struct vnode *);
 void	genfs_node_unlock(struct vnode *);
 
 #endif	/* _MISCFS_GENFS_GENFS_NODE_H_ */

Index: src/sys/miscfs/genfs/genfs_vnops.c
diff -u src/sys/miscfs/genfs/genfs_vnops.c:1.174 src/sys/miscfs/genfs/genfs_vnops.c:1.175
--- src/sys/miscfs/genfs/genfs_vnops.c:1.174	Fri Nov 20 13:42:43 2009
+++ src/sys/miscfs/genfs/genfs_vnops.c	Wed Jan 27 15:18:40 2010
@@ -1,4 +1,4 @@
-/*	$NetBSD: genfs_vnops.c,v 1.174 2009/11/20 13:42:43 roy Exp $	*/
+/*	$NetBSD: genfs_vnops.c,v 1.175 2010/01/27 15:18:40 uebayasi Exp $	*/
 
 /*-
  * Copyright (c) 2008 The NetBSD Foundation, Inc.
@@ -57,7 +57,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: genfs_vnops.c,v 1.174 2009/11/20 13:42:43 roy Exp $");
+__KERNEL_RCSID(0, "$NetBSD: genfs_vnops.c,v 1.175 2010/01/27 15:18:40 uebayasi Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -515,6 +515,14 @@
 }
 
 void
+genfs_node_rdtrylock(struct vnode *vp)
+{
+	struct genfs_node *gp = VTOG(vp);
+
+	rw_tryenter(&gp->g_glock, RW_READER);
+}
+
+void
 genfs_node_unlock(struct vnode *vp)
 {
 	struct genfs_node *gp = VTOG(vp);