Re: [RFC PATCH 02/11] rust: add `pages` module for handling page allocation

[Andreas Hindborg]

Matthew Wilcox <willy@xxxxxxxxxxxxx> writes:

> On Wed, May 03, 2023 at 11:06:59AM +0200, Andreas Hindborg wrote:
>> From: Andreas Hindborg <a.hindborg@xxxxxxxxxxx>
>> 
>> This patch adds support for working with pages of order 0. Support for pages
>> with higher order is deferred. Page allocation flags are fixed in this patch.
>> Future work might allow the user to specify allocation flags.
>> 
>> This patch is a heavily modified version of code available in the rust tree [1],
>> primarily adding support for multiple page mapping strategies.
>
> This also seems misaligned with the direction of Linux development.
> Folios are the future, pages are legacy.  Please, ask about what's
> going on before wasting time on the past.

I see, thanks for the heads up! In this case I wanted to do an
apples-apples comparison to the C null_blk driver. Since that is using
kmap I wanted to have that. But let's bind to the folio_* APIs in the
future, that would make sense.

Best regards
Andreas