Re: [RFC PATCH 1/2] mm, mincore2(): retrieve dax and tlb-size attributes of an address range

[Dan Williams]

On Mon, Sep 12, 2016 at 7:16 PM, Nicholas Piggin <npiggin@xxxxxxxxx> wrote:
> On Mon, 12 Sep 2016 10:29:17 -0700
[..]
>> Certainly one of the new request flags can indicate that the vector is
>> made up of larger entries.
>
> Hmm. Changing prototype depending on flags. I thought I was having
> a nightmare about ioctls for a minute there :)

Heh :)

> In general, is this what we want for a new API? Should we be thinking
> about an extent API?

This probably fits better with the use cases I know that want to
consume this information, something like fiemap (mextmap, maybe?) for
memory.