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

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

On Mon, 2 Oct 2000, Ingo Molnar wrote:
> On Mon, 2 Oct 2000, Linus Torvalds wrote:
> 
> > 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.
> 
> except for writes, there we cache the block # in the bh and do
> not have to call the lowlevel FS repeatedly to calculate the FS
> position of the page.

Would it be "close enough" to simply clear the buffer heads of
clean pages which make it to the front of the active list ?

Or is there another optimisation we could do to make the
approximation even better ?

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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