Re: [PATCH v6 3/5] mm: introduce mmap3 for safely defining new mmap flags

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To: "Kirill A. Shutemov" <kirill@xxxxxxxxxxxxx>
Subject: Re: [PATCH v6 3/5] mm: introduce mmap3 for safely defining new mmap flags
From: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Date: Fri, 25 Aug 2017 09:02:36 -0700
Cc: Christoph Hellwig <hch@xxxxxxxxxxxxx>, Dan Williams <dan.j.williams@xxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Jan Kara <jack@xxxxxxx>, Arnd Bergmann <arnd@xxxxxxxx>, "linux-nvdimm@xxxxxxxxxxxx" <linux-nvdimm@xxxxxxxxxxxx>, Linux API <linux-api@xxxxxxxxxxxxxxx>, "linux-kernel@xxxxxxxxxxxxxxx" <linux-kernel@xxxxxxxxxxxxxxx>, linux-xfs@xxxxxxxxxxxxxxx, Linux MM <linux-mm@xxxxxxxxx>, Andy Lutomirski <luto@xxxxxxxxxx>, linux-fsdevel <linux-fsdevel@xxxxxxxxxxxxxxx>, "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx>, linux-parisc@xxxxxxxxxxxxxxx
In-reply-to: <20170825155803.4km7wttzadfqw2vb@node.shutemov.name>
User-agent: Mutt/1.8.3 (2017-05-23)

On Fri, Aug 25, 2017 at 06:58:03PM +0300, Kirill A. Shutemov wrote:
> Not all archs are ready for this:
> 
> arch/parisc/include/uapi/asm/mman.h:#define MAP_TYPE    0x03            /* Mask for type of mapping */
> arch/parisc/include/uapi/asm/mman.h:#define MAP_FIXED   0x04            /* Interpret addr exactly */

I'd be happy to say that we should not care about parisc for
persistent memory.  We'll just have to find a way to exclude
parisc without making life too ugly.

Follow-Ups:
- Re: [PATCH v6 3/5] mm: introduce mmap3 for safely defining new mmap flags
  - From: Kirill A. Shutemov

References:
- [PATCH v6 0/5] MAP_DIRECT and block-map-atomic files
  - From: Dan Williams
- [PATCH v6 3/5] mm: introduce mmap3 for safely defining new mmap flags
  - From: Dan Williams
- Re: [PATCH v6 3/5] mm: introduce mmap3 for safely defining new mmap flags
  - From: Christoph Hellwig
- Re: [PATCH v6 3/5] mm: introduce mmap3 for safely defining new mmap flags
  - From: Dan Williams
- Re: [PATCH v6 3/5] mm: introduce mmap3 for safely defining new mmap flags
  - From: Christoph Hellwig
- Re: [PATCH v6 3/5] mm: introduce mmap3 for safely defining new mmap flags
  - From: Kirill A. Shutemov

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