From 5d264f84f3d33226bf217321f96c7c7ce297bec7 Mon Sep 17 00:00:00 2001
From: Bruce M Simpson <bms@FreeBSD.org>
Date: Sun, 5 Oct 2003 12:41:08 +0000
Subject: [PATCH] Revert previous commit. Come back vslock(), all is forgiven.

Pointy hat to:	bms
---
 sys/vm/vm_extern.h |  2 ++
 sys/vm/vm_glue.c   | 29 +++++++++++++++++++++++++++++
 2 files changed, 31 insertions(+)

diff --git a/sys/vm/vm_extern.h b/sys/vm/vm_extern.h
index ee71f8133e5..07f28fa31db 100644
--- a/sys/vm/vm_extern.h
+++ b/sys/vm/vm_extern.h
@@ -88,6 +88,8 @@ void vmspace_unshare(struct proc *);
 void vmspace_free(struct vmspace *);
 void vmspace_exitfree(struct proc *);
 void vnode_pager_setsize(struct vnode *, vm_ooffset_t);
+void vslock(void *, u_int);
+void vsunlock(void *, u_int);
 void vm_object_print(/* db_expr_t */ long, boolean_t, /* db_expr_t */ long,
 			  char *);
 int vm_fault_quick(caddr_t v, int prot);
diff --git a/sys/vm/vm_glue.c b/sys/vm/vm_glue.c
index b1e1cdfa96d..6e2872f65eb 100644
--- a/sys/vm/vm_glue.c
+++ b/sys/vm/vm_glue.c
@@ -179,6 +179,35 @@ useracc(addr, len, rw)
 	return (rv == TRUE);
 }
 
+/*
+ * MPSAFE
+ */
+void
+vslock(addr, len)
+	void *addr;
+	u_int len;
+{
+
+	vm_map_wire(&curproc->p_vmspace->vm_map, trunc_page((vm_offset_t)addr),
+	    round_page((vm_offset_t)addr + len),
+	    VM_MAP_WIRE_SYSTEM|VM_MAP_WIRE_NOHOLES);
+}
+
+/*
+ * MPSAFE
+ */
+void
+vsunlock(addr, len)
+	void *addr;
+	u_int len;
+{
+
+	vm_map_unwire(&curproc->p_vmspace->vm_map,
+	    trunc_page((vm_offset_t)addr),
+	    round_page((vm_offset_t)addr + len),
+	    VM_MAP_WIRE_SYSTEM|VM_MAP_WIRE_NOHOLES);
+}
+
 /*
  * Create the U area for a new process.
  * This routine directly affects the fork perf for a process.