svn commit: r193078 - in user/kmacy/releng_7_2_fcs/sys: amd64/amd64 vm

[John Baldwin]

On Friday 29 May 2009 9:05:31 pm Kip Macy wrote:
> -	--m->wire_count;
> +	atomic_subtract_int(&m->wire_count, 1);
>  	if (m->wire_count == 0)
>  		return _pmap_unwire_pte_hold(pmap, va, m, free);

This is not safe.  Use atomic_fetchadd() instead to do this atomically the way 
refcount_* do.

-- 
John Baldwin