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In-Reply-To: <20150603211948.13749.85816.stgit@dwillia2-desk3.amr.corp.intel.com>
References: <20150603211948.13749.85816.stgit@dwillia2-desk3.amr.corp.intel.com>
Date: Wed, 3 Jun 2015 14:38:32 -0700
Message-ID: <CAPcyv4g4PzhWR3O=15SVmhSdE8TAbiXzcjS5JvcGzJaKGW=_Xg@mail.gmail.com>
Subject: Re: [PATCH v3 0/6] pmem api, generic ioremap_cache, and memremap
From: Dan Williams <dan.j.williams@intel.com>
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To: Arnd Bergmann <arnd@arndb.de>, Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>, "H. Peter Anvin" <hpa@zytor.com>, Thomas Gleixner <tglx@linutronix.de>, Ross Zwisler <ross.zwisler@linux.intel.com>, Andrew Morton <akpm@linux-foundation.org>
Cc: Juergen Gross <jgross@suse.com>, X86 ML <x86@kernel.org>, "Kani, Toshimitsu" <toshi.kani@hp.com>, "linux-nvdimm@lists.01.org" <linux-nvdimm@lists.01.org>, Benjamin Herrenschmidt <benh@kernel.crashing.org>, Luis Rodriguez <mcgrof@suse.com>, Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>, "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>, Stefan Bader <stefan.bader@canonical.com>, Andy Lutomirski <luto@amacapital.net>, linux-mm@kvack.org, geert@linux-m68k.org, ralf@linux-mips.org, Henrique de Moraes Holschuh <hmh@hmh.eng.br>, mpe@ellerman.id.au, Tejun Heo <tj@kernel.org>, Paul Mackerras <paulus@samba.org>, Christoph Hellwig <hch@lst.de>

On Wed, Jun 3, 2015 at 2:34 PM, Dan Williams <dan.j.williams@intel.com> wrote:
> The pmem api is responsible for shepherding data out to persistent
> media.  The pmem driver uses this api, when available, to assert that
> data is durable by the time bio_endio() is invoked.  When an
> architecture or cpu can not make persistence guarantees the driver warns
> and falls back to "best effort" implementation.
>
> Changes since v2 [1]:

[1]: https://lists.01.org/pipermail/linux-nvdimm/2015-May/000987.html

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