Re: the new VM

Marcelo Tosatti
2000-09-25T14:26:48Z

On Mon, 25 Sep 2000, Andrea Arcangeli wrote:

<snip>

> I talked with Alexey about this and it seems the best way is to have a
> per-socket reservation of clean cache in function of the receive window. So we
> don't need an huge atomic pool but we can have a special lru with an irq
> spinlock that is able to shrink cache from irq as well.

In the current 2.4 VM code, there is a kernel thread called
"kreclaimd".

This thread keeps freeing pages from the inactive clean list when needed
(when zone->free_pages < zone->pages_low), making them available for
atomic allocations.

Do you consider pages_low pages as a "huge atomic pool" ?