Hi Kamezawa-san,
Thank you for your comments.
KAMEZAWA Hiroyuki wrote:
Hi, AOKI-san
On Wed, 05 Apr 2006 19:47:27 -0400
Hideo AOKI <[email protected]> wrote:
Hello Andrew,
Could you apply my patches to your tree?
These patches are an enhancement of OVERCOMMIT_GUESS algorithm in
__vm_enough_memory(). The detailed description is in attached patch.
I think adding a function like this is more simple way.
(call this istead of nr_free_pages().)
==
int nr_available_memory()
{
unsigned long sum = 0;
for_each_zone(zone) {
if (zone->free_pages > zone->pages_high)
sum += zone->free_pages - zone->pages_high;
}
return sum;
}
==
I like your idea. But, in the function, I think we need to care
lowmem_reserve too.
Since __vm_enough_memory() doesn't know zone and cpuset information,
we have to guess proper value of lowmem_reserve in each zone
like I did in calculate_totalreserve_pages() in my patch.
Do you think that we can do this calculation every time?
If it is good enough, I'll make revised patch.
BTW, vm_enough_memory() doesn't eat cpuset information ?
I think this is another point which we should improve.
Best regards,
Hideo Aoki
---
Hideo Aoki, Hitachi Computer Products (America) Inc.
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