Re: [PATCH 3/5] uprobes: introduce uprobe_xol_slots[NR_CPUS]

[Peter Zijlstra]

On Mon, 2011-11-28 at 20:07 +0100, Oleg Nesterov wrote:
> +       UPROBE_XOL_FIRST_PAGE = UPROBE_XOL_LAST_PAGE
> +                             + NR_CPUS * UPROBES_XOL_SLOT_BYTES / PAGE_SIZE, 

I think that wants to be: 
	+ DIV_ROUND_UP(NR_CPUS * UPROBES_XOL_SLOT_BYTES, PAGE_SIZE);

otherwise you'll end up with 0 pages for UP and the sort.
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