Re: [PATCH] Caches that shrink automatically

[Linus Torvalds]

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