Hans
Andreas Gruenbacher wrote:
>Hello,
>
>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).
>
>I propose this patch, which adds the register_cache() and unregister_cache()
>functions. They allow to register a callback which is invoked on memory
>pressure. This callback shall then try to free some memory; the parameters
>and semantics are similar to the other shrink functions in mm/vmscan.c.
>
>
>Regards,
>Andreas.
>
>------------------------------------------------------------------
> Andreas Gruenbacher SuSE Linux AG
> mailto:agruen@suse.de Deutschherrnstr. 15-19
> http://www.suse.de/ D-90429 Nuernberg, Germany
>
>
>
>
-- Hans
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