On Tue, Oct 9, 2012 at 8:46 AM, Konrad Rzeszutek Wilk <kon...@kernel.org> wrote:
>> + !e820_any_mapped(addr & PAGE_MASK, next, 0))
>
> What is the 0 parameter for?
any type
if type != 0, the will only check entries with same type.
int
e820_any_mapped(u64 start, u64 end, unsigned type)
{
int i;
for (i = 0; i < e820.nr_map; i++) {
struct e820entry *ei = &e820.map[i];
if (type && ei->type != type)
continue;
if (ei->addr >= end || ei->addr + ei->size <= start)
continue;
return 1;
}
return 0;
}
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