Re: 2.4 / 2.5 VM plans

[vii@penguinpowered.com]

Rik van Riel <riel@conectiva.com.br> writes:

[...]

> To start the discussion, here's my flameba^Wlist of ideas:

Seeing as not much discussion has resulted (if so it missed my
mailbox), I'll stick my neck out to agree.

[...]

> 3) separate page replacement (page aging) and page flushing,

Definitely!

>    currently we'll happily free a referenced clean page just
>    because the unreferenced pages haven't been flushed to disk
>    yet ...   this is very bad since the unreferenced pages often
>    turn out to be things like executable code
> 
>    we could achieve this by augmenting the current MM subsystem
>    with an inactive and scavenge list, in the process splitting

Yes! Please!

IMHO another really cool side-effect will be getting rid of the
vmscan.c:swap_out algorithm (at least as far as I understand).

>    shrink_mmap() into three better readable functions ... I have
>    this mostly done

[...]

BTW, Is there any timescale for integrating page coloring? Someone
produced a patch somewhere (IIRC specifically for the alpha, sorry to
be so vague).

-- 

	http://altern.org/vii
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org.  For more info on Linux MM,
see: http://www.linux.eu.org/Linux-MM/