have to add locking so that underlying type can be changed

SCCS-vsn: sys/sys/vnode.h 7.8

diff --git a/usr/src/sys/sys/vnode.h b/usr/src/sys/sys/vnode.h
index 6a19033..ae21bfc 100644 (file)
--- a/usr/src/sys/sys/vnode.h
+++ b/usr/src/sys/sys/vnode.h
@@ -14,7 +14,7 @@
  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  *
  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  *

- *     @(#)vnode.h     7.7 (Berkeley) %G%
+ *     @(#)vnode.h     7.8 (Berkeley) %G%

  */
 
 /*
  */
 
 /*


@@ -77,6 +77,8 @@ struct vnode {
  */
 #define        VROOT           0x01    /* root of its file system */
 #define        VTEXT           0x02    /* vnode is a pure text prototype */
  */
 #define        VROOT           0x01    /* root of its file system */
 #define        VTEXT           0x02    /* vnode is a pure text prototype */

+#define VXLOCK         0x04    /* vnode is locked to change underlying type */
+#define VXWANT         0x08    /* process is waiting for vnode */

 #define        VEXLOCK         0x10    /* exclusive lock */
 #define        VSHLOCK         0x20    /* shared lock */
 #define        VLWAIT          0x40    /* proc is waiting on shared or excl. lock */
 #define        VEXLOCK         0x10    /* exclusive lock */
 #define        VSHLOCK         0x20    /* shared lock */
 #define        VLWAIT          0x40    /* proc is waiting on shared or excl. lock */