linux-kernel - Re: [PATCH v2 5/9] x86, pmem: push fallback handling to arch code

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Date:	Fri, 28 Aug 2015 15:48:26 -0600
From:	Toshi Kani <toshi.kani@...com>
To:	Dan Williams <dan.j.williams@...el.com>
Cc:	"hch@....de" <hch@....de>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"mingo@...nel.org" <mingo@...nel.org>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	"tglx@...utronix.de" <tglx@...utronix.de>,
	"hpa@...or.com" <hpa@...or.com>,
	"linux-nvdimm@...ts.01.org" <linux-nvdimm@...ts.01.org>,
	"mingo@...hat.com" <mingo@...hat.com>,
	"ross.zwisler@...ux.intel.com" <ross.zwisler@...ux.intel.com>,
	"boaz@...xistor.com" <boaz@...xistor.com>,
	"david@...morbit.com" <david@...morbit.com>
Subject: Re: [PATCH v2 5/9] x86, pmem: push fallback handling to arch code

On Fri, 2015-08-28 at 14:47 -0700, Dan Williams wrote:
> On Fri, Aug 28, 2015 at 2:41 PM, Toshi Kani <toshi.kani@...com> wrote:
> > On Wed, 2015-08-26 at 21:34 +0000, Williams, Dan J wrote:
> [..]
> > > -#define ARCH_MEMREMAP_PMEM MEMREMAP_WB
> > 
> > Should it be better to do:
> > 
> > #else   /* !CONFIG_ARCH_HAS_PMEM_API */
> > #define ARCH_MEMREMAP_PMEM MEMREMAP_WT
> > 
> > so that you can remove all '#ifdef ARCH_MEMREMAP_PMEM' stuff?
> 
> Yeah, that seems like a nice incremental cleanup for memremap_pmem()
> to just unconditionally use ARCH_MEMREMAP_PMEM, feel free to send it
> along.

OK. Will do.

Thanks,
-Toshi
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