Re: [Lsf-pc] [LSF/MM TOPIC] really large storage sectors - going beyond 4096 bytes

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On Thu, 23 Jan 2014, James Bottomley wrote:

> If the compound page infrastructure exists today and is usable for this,
> what else do we need to do? ... because if it's a couple of trivial
> changes and a few minor patches to filesystems to take advantage of it,
> we might as well do it anyway.  I was only objecting on the grounds that
> the last time we looked at it, it was major VM surgery.  Can someone
> give a summary of how far we are away from being able to do this with
> the VM system today and what extra work is needed (and how big is this
> piece of work)?

The main problem for me was the page cache. The VM would not be such a
problem. Changing the page cache function required updates to many
filesystems.


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