Re: [RFC PATCH 0/7] evacuate struct page from the block layer

[Rik van Riel]

On 03/19/2015 09:43 AM, Matthew Wilcox wrote:

> 1. Construct struct pages for persistent memory
> 1a. Permanently
> 1b. While the pages are under I/O

Michael Tsirkin and I have been doing some thinking about what
it would take to allocate struct pages per 2MB area permanently,
and allocate additional struct pages for 4kB pages on demand,
when a 2MB area is broken up into 4kB pages.

This should work for both DRAM and persistent memory.

I am still not convinced it is worthwhile to have struct pages
for persistent memory though, but I am willing to change my mind.

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