D11945.id31902.diff
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D11945.id31902.diff
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	Index: sys/vm/vm_kern.c
	===================================================================
	--- sys/vm/vm_kern.c
	+++ sys/vm/vm_kern.c
	@@ -386,17 +386,19 @@
	void
	kmem_unback(vm_object_t object, vm_offset_t addr, vm_size_t size)
	{
	- vm_page_t m;
	- vm_offset_t i, offset;
	+ vm_page_t m, next;
	+ vm_offset_t end, offset;

	KASSERT(object == kmem_object \|\| object == kernel_object,
	("kmem_unback: only supports kernel objects."));

	pmap_remove(kernel_pmap, addr, addr + size);
	offset = addr - VM_MIN_KERNEL_ADDRESS;
	+ end = offset + size;
	VM_OBJECT_WLOCK(object);
	- for (i = 0; i < size; i += PAGE_SIZE) {
	- m = vm_page_lookup(object, atop(offset + i));
	+ for (m = vm_page_lookup(object, atop(offset)); offset < end;
	+ offset += PAGE_SIZE, m = next) {
	+ next = vm_page_next(m);
	vm_page_unwire(m, PQ_NONE);
	vm_page_free(m);
	}