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Re: [PATCH v2 7/7] pmem, dax: have direct_access use __pmem annotation

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From	Dan Williams <dan.j.williams@intel.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH v2 7/7] pmem, dax: have direct_access use __pmem annotation
Date	Sat, 15 Aug 2015 17:50:02 +0200
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X-Original-To	Christoph Hellwig <hch@lst.de>
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X-Original-Cc	Ross Zwisler <ross.zwisler@linux.intel.com>, "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>, "linux-nvdimm@lists.01.org" <linux-nvdimm@lists.01.org>, Jonathan Corbet <corbet@lwn.net>, Benjamin Herrenschmidt <benh@kernel.crashing.org>, Paul Mackerras <paulus@samba.org>, Michael Ellerman <mpe@ellerman.id.au>, Jens Axboe <axboe@kernel.dk>, Martin Schwidefsky <schwidefsky@de.ibm.com>, Heiko Carstens <heiko.carstens@de.ibm.com>, linux390@de.ibm.com, Alexander Viro <viro@zeniv.linux.org.uk>, Matthew Wilcox <willy@linux.intel.com>, Jeff Layton <jlayton@primarydata.com>, Andrew Morton <akpm@linux-foundation.org>, Omar Sandoval <osandov@osandov.com>, Boaz Harrosh <boaz@plexistor.com>, Miklos Szeredi <mszeredi@suse.cz>, Jan Kara <jack@suse.cz>, Wolfram Sang <wsa@the-dreams.de>, Uwe Kleine-König <u.kleine-koenig@pengutronix.de>, Gerald Schaefer <gerald.schaefer@de.ibm.com>, Ameen Ali <ameenali023@gmail.com>, "Martin K. Petersen" <martin.petersen@oracle.com>, Sagi Grimberg <sagig@mellanox.com>, Mike Snitzer <snitzer@redhat.com>, Tejun Heo <tj@kernel.org>, Shaohua Li <shli@fb.com>, Ming Lei <ming.lei@canonical.com>, linux-doc@vger.kernel.org, linuxppc-dev <linuxppc-dev@lists.ozlabs.org>, linux-s390@vger.kernel.org, linux-fsdevel <linux-fsdevel@vger.kernel.org>, Dave Chinner <david@fromorbit.com>
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On Sat, Aug 15, 2015 at 2:11 AM, Christoph Hellwig <hch@lst.de> wrote:
> On Fri, Aug 14, 2015 at 09:58:16AM -0700, Dan Williams wrote:
>> > I'll merge with your code for v3.
>>
>> Sounds, let me go rebase the __pfn_t patches on -mm so we'all lined up
>> and collision free.
>
> I'm doubt that we'll have PFN mapping ready for 4.3.  I'd rather see
> Ross series goes first, and move the patch to remove the size argument
> from ->direct access [1] over to this series as well.
>
> [1] https://git.kernel.org/cgit/linux/kernel/git/djbw/nvdimm.git/commit/?h=pfn&id=8e15e69fb9e61ac563c5a7ffd9dd9a7b545cced3

Yes, let's do it.  The need for DAX persistence guarantees is a higher
priority than solving the DAX vs PMEM unbind bug.  Especially if we
can defer __pfn_t and get some basic struct page mapping into 4.3 as
well.
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Thread

[PATCH v2 7/7] pmem, dax: have direct_access use __pmem annotation Ross Zwisler <ross.zwisler@linux.intel.com> - 2015-08-13 19:00 +0200
  Re: [PATCH v2 7/7] pmem, dax: have direct_access use __pmem annotation Dan Williams <dan.j.williams@intel.com> - 2015-08-13 23:30 +0200
    Re: [PATCH v2 7/7] pmem, dax: have direct_access use __pmem  annotation Ross Zwisler <ross.zwisler@linux.intel.com> - 2015-08-14 19:00 +0200
      Re: [PATCH v2 7/7] pmem, dax: have direct_access use __pmem annotation Dan Williams <dan.j.williams@intel.com> - 2015-08-14 19:00 +0200
        Re: [PATCH v2 7/7] pmem, dax: have direct_access use __pmem  annotation Christoph Hellwig <hch@lst.de> - 2015-08-15 11:20 +0200
          Re: [PATCH v2 7/7] pmem, dax: have direct_access use __pmem annotation Dan Williams <dan.j.williams@intel.com> - 2015-08-15 17:50 +0200
  Re: [PATCH v2 7/7] pmem, dax: have direct_access use __pmem  annotation Christoph Hellwig <hch@lst.de> - 2015-08-15 11:30 +0200
    Re: [PATCH v2 7/7] pmem, dax: have direct_access use __pmem annotation Dan Williams <dan.j.williams@intel.com> - 2015-08-15 17:50 +0200
      Re: [PATCH v2 7/7] pmem, dax: have direct_access use __pmem  annotation Christoph Hellwig <hch@lst.de> - 2015-08-15 18:10 +0200
        Re: [PATCH v2 7/7] pmem, dax: have direct_access use __pmem annotation Dan Williams <dan.j.williams@intel.com> - 2015-08-15 20:10 +0200
      Re: [PATCH v2 7/7] pmem, dax: have direct_access use __pmem  annotation Ross Zwisler <ross.zwisler@linux.intel.com> - 2015-08-17 22:10 +0200

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