Re: [PATCH 02/16] DRBD: lru_cache

[Kyle Moffett]

On Sun, May 3, 2009 at 8:48 PM, Kyle Moffett <kyle@xxxxxxxxxxxxxxx> wrote:
> There are a couple trivial tunables you can apply to the model I
> provided to dramatically change the effect of memory pressure on the
> LRU:
>
> [...]
>

Ooh, I forgot to mention another biggie:  There's a way to allocate a
reserve pool of memory (I don't remember the exact API, sorry), which
can be attached to a specific kmem_cache to be used by processes
attempting writeout.  This would allow you to allocate more in-use
elements to make forward progress, even if all of your existing
elements are already in-use.

Cheers,
Kyle Moffett
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