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

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Date:	Mon, 23 Mar 2015 12:30:17 -0700
From:	Christoph Hellwig <hch@...radead.org>
To:	Rik van Riel <riel@...hat.com>
Cc:	Boaz Harrosh <boaz@...xistor.com>,
	Matthew Wilcox <willy@...ux.intel.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Dan Williams <dan.j.williams@...el.com>,
	linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
	axboe@...nel.dk, linux-nvdimm@...1.01.org,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	linux-raid@...r.kernel.org, mgorman@...e.de, hch@...radead.org,
	linux-fsdevel@...r.kernel.org,
	"Michael S. Tsirkin" <mst@...hat.com>
Subject: Re: [RFC PATCH 0/7] evacuate struct page from the block layer

On Mon, Mar 23, 2015 at 11:19:07AM -0400, Rik van Riel wrote:
> There are two things going on here:
> 
> 1) You want to keep using struct page for now, while there are
>    subsystems that require it. This is perfectly legitimate.
> 
> 2) Matthew and Dan are changing over some subsystems to no longer
>    require struct page. This is perfectly legitimate.
> 
> I do not understand why either of you would have to object to what
> the other is doing. There is room to keep using struct page until
> the rest of the kernel no longer requires it.

*nod*

I'd really like to merge the struct page based pmem driver ASAP.  We can
then look into work that avoid the need for struct page, and I think Dan
is doing some good work in that direction.
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