Re: [PATCH] dax: Split pmd map when fallback on COW

From: Dan Williams
Date: Mon Nov 23 2015 - 15:56:59 EST


On Mon, Nov 23, 2015 at 12:45 PM, Toshi Kani <toshi.kani@xxxxxxx> wrote:
> On Mon, 2015-11-23 at 12:45 -0800, Dan Williams wrote:
>> On Mon, Nov 23, 2015 at 12:05 PM, Toshi Kani <toshi.kani@xxxxxxx> wrote:
[..]
>> This is a nop if CONFIG_TRANSPARENT_HUGEPAGE=n, so I don't think it's
>> a complete fix.
>
> Well, __dax_pmd_fault() itself depends on CONFIG_TRANSPARENT_HUGEPAGE.
>

Indeed it is... I think that's wrong because transparent huge pages
rely on struct page??
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