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Date: Sun, 4 Aug 2002 11:43:16 -0700 (PDT)
From: Linus Torvalds <torvalds@transmeta.com>
To: Andreas Gruenbacher <agruen@suse.de>
cc: Alan Cox <alan@redhat.com>, Marcelo Tosatti <marcelo@conectiva.com.br>,
       lkml <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] Caches that shrink automatically
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On Sun, 4 Aug 2002, Andreas Gruenbacher wrote:
> 
> Currently there is no way for modules to define dynamically sized caches that 
> shrink upon memory pressure. We need this for implementing Extended Attribute 
> caches on ext2, ext3, and ReiserFS. Other caches could also make use of the 
> same mechanism (e.g., nfsd's permission cache, dcache, icache, dqache).

This is what the slablru patches should do.. Any slab user should be able 
to get a callback when the LRU decides that the page seems to be unused.

		Linus

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