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-rw-r--r--sys/sys/mdioctl.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/sys/sys/mdioctl.h b/sys/sys/mdioctl.h
index 4f2e9371ce96..b28374182821 100644
--- a/sys/sys/mdioctl.h
+++ b/sys/sys/mdioctl.h
@@ -38,6 +38,8 @@
* from: Utah $Hdr: fdioctl.h 1.1 90/07/09$
*
* @(#)vnioctl.h 8.1 (Berkeley) 6/10/93
+ *
+ * $FreeBSD$
*/
#ifndef _SYS_VNIOCTL_H_
@@ -72,5 +74,6 @@ struct vn_ioctl {
#define VN_DEBUG 0x4 /* Debug data in vn driver */
#define VN_IO 0x8 /* Debug I/O in vn driver */
#define VN_DONTCLUSTER 0x10 /* Don't cluster */
+#define VN_RESERVE 0x20 /* Pre-reserve swap */
#endif /* _SYS_VNIOCTL_H_*/