D22717.diff
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	Index: head/sys/vm/vm_glue.c
	===================================================================
	--- head/sys/vm/vm_glue.c
	+++ head/sys/vm/vm_glue.c
	@@ -273,12 +273,12 @@
	static int
	sysctl_kstack_cache_size(SYSCTL_HANDLER_ARGS)
	{
	- int error, newsize;
	+ int error, oldsize;

	- newsize = kstack_cache_size;
	- error = sysctl_handle_int(oidp, &newsize, 0, req);
	- if (error == 0 && req->newptr && newsize != kstack_cache_size)
	- uma_zone_set_maxcache(kstack_cache, newsize);
	+ oldsize = kstack_cache_size;
	+ error = sysctl_handle_int(oidp, arg1, arg2, req);
	+ if (error == 0 && req->newptr && oldsize != kstack_cache_size)
	+ uma_zone_set_maxcache(kstack_cache, kstack_cache_size);
	return (error);
	}
	SYSCTL_PROC(_vm, OID_AUTO, kstack_cache_size, CTLTYPE_INT\|CTLFLAG_RW,