Re: linux-2.4.10-pre5

Andreas Dilger (adilger@turbolabs.com)
Sat, 8 Sep 2001 22:29:24 -0600

On Sep 08, 2001 20:58 -0700, Linus Torvalds wrote:
> On Sun, 9 Sep 2001, Andrea Arcangeli wrote:
> > I wish the cache coherency logic would be simpler but just doing
> > something unconditionally it's going to break things in one way or
> > another as far I can tell.
>
> I'd rather fix that, then.
>
> Otherwise we'll just end up carrying broken baggage around forever. Which
> is not the way to do things.
>
> Anyway, at this point this definitely sounds like a 2.5.x patch. Which I
> always pretty much assumed it would be anyway.

So basically - when we move block devices to the page cache, get rid of
buffer cache usage in the filesystems as well? Ext2 is nearly there at
least. One alternative is as Daniel Phillips did in the indexed-ext2-
directory patch, where he kept the "bread" interface, but backed it
with the page cache, so it required relatively little change to the
filesystem.

Cheers, Andreas

-- 
Andreas Dilger  \ "If a man ate a pound of pasta and a pound of antipasto,
                 \  would they cancel out, leaving him still hungry?"
http://www-mddsp.enel.ucalgary.ca/People/adilger/               -- Dogbert


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