From 0b69568411ea7284f38c260fb4bb02c0f76a55c8 Mon Sep 17 00:00:00 2001
From: Alan Cox <alc@FreeBSD.org>
Date: Sat, 2 Aug 2014 17:58:20 +0000
Subject: [PATCH] Rewrite a loop in vm_map_wire() so that gcc doesn't think
 that the variable "rv" is uninitialized.

Reported by:	bz
---
 sys/vm/vm_map.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/sys/vm/vm_map.c b/sys/vm/vm_map.c
index 67977ebe175..68ae0d2f482 100644
--- a/sys/vm/vm_map.c
+++ b/sys/vm/vm_map.c
@@ -2569,8 +2569,8 @@ vm_map_wire(vm_map_t map, vm_offset_t start, vm_offset_t end,
 			vm_map_busy(map);
 			vm_map_unlock(map);
 
-			for (faddr = saved_start; faddr < saved_end; faddr +=
-			    PAGE_SIZE) {
+			faddr = saved_start;
+			do {
 				/*
 				 * Simulate a fault to get the page and enter
 				 * it into the physical map.
@@ -2578,7 +2578,7 @@ vm_map_wire(vm_map_t map, vm_offset_t start, vm_offset_t end,
 				if ((rv = vm_fault(map, faddr, VM_PROT_NONE,
 				    VM_FAULT_CHANGE_WIRING)) != KERN_SUCCESS)
 					break;
-			}
+			} while ((faddr += PAGE_SIZE) < saved_end);
 			vm_map_lock(map);
 			vm_map_unbusy(map);
 			if (last_timestamp + 1 != map->timestamp) {