Re: [highmem bug report against -test5 and -test6] Re: [PATCH] Re: simple FS application that hangs 2.4-test5, mem mgmt problem or FS buffer cache mgmt problem? (fwd)

[Rik van Riel <riel@conectiva.com.br>]

On Mon, 2 Oct 2000, Linus Torvalds wrote:
> On Mon, 2 Oct 2000, Andrea Arcangeli wrote:
> > On Mon, Oct 02, 2000 at 04:35:43PM -0300, Rik van Riel wrote:
> > > because we keep the buffer heads on active pages in memory...
> > 
> > A page can be the most active and the VM and never need bh on it after the
> > first pagein. Keeping the bh on it means wasting tons of memory for no good
> > reason.
> 
> I agree. Most of the time, there's absolutely no point in
> keeping the buffer heads around. Most pages (and _especially_
> the actively mapped ones) do not need the buffer heads at all
> after creation - once they are uptodate they stay uptodate and
> we're only interested in the page, not the buffers used to
> create it.

I'll create a patch to do strip off the buffer heads from
clean active pages.

regards,

Rik
--
"What you're running that piece of shit Gnome?!?!"
       -- Miguel de Icaza, UKUUG 2000

http://www.conectiva.com/		http://www.surriel.com/

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