linux-kernel - RE: [PATCH v3 18/21] nd_btt: atomic sector updates

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Message-ID: <94D0CD8314A33A4D9D801C0FE68B40295A91FF1A@G9W0745.americas.hpqcorp.net>
Date:	Fri, 22 May 2015 21:16:21 +0000
From:	"Elliott, Robert (Server Storage)" <Elliott@...com>
To:	Dan Williams <dan.j.williams@...el.com>,
	"axboe@...nel.dk" <axboe@...nel.dk>
CC:	"mingo@...nel.org" <mingo@...nel.org>,
	"linux-nvdimm@...ts.01.org" <linux-nvdimm@...ts.01.org>,
	"neilb@...e.de" <neilb@...e.de>,
	"gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
	Dave Chinner <david@...morbit.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Andy Lutomirski <luto@...capital.net>,
	"Jens Axboe" <axboe@...com>,
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
	"H. Peter Anvin" <hpa@...or.com>, "hch@....de" <hch@....de>
Subject: RE: [PATCH v3 18/21] nd_btt: atomic sector updates



> -----Original Message-----
> From: Linux-nvdimm [mailto:linux-nvdimm-bounces@...ts.01.org] On Behalf Of
> Dan Williams
> Sent: Wednesday, May 20, 2015 3:58 PM
> To: axboe@...nel.dk
> Cc: mingo@...nel.org; linux-nvdimm@...ts.01.org; neilb@...e.de;
> gregkh@...uxfoundation.org; Dave Chinner; linux-kernel@...r.kernel.org; Andy
> Lutomirski; Jens Axboe; linux-acpi@...r.kernel.org; H. Peter Anvin;
> hch@....de
> Subject: [PATCH v3 18/21] nd_btt: atomic sector updates
> 
> From: Vishal Verma <vishal.l.verma@...ux.intel.com>
> 
...
> diff --git a/drivers/block/nd/Kconfig b/drivers/block/nd/Kconfig
> index 00d9afe9475e..2b169806eac5 100644
> --- a/drivers/block/nd/Kconfig
> +++ b/drivers/block/nd/Kconfig
> @@ -32,9 +32,25 @@ config BLK_DEV_PMEM
>  	  capable of DAX (direct-access) file system mappings.  See
>  	  Documentation/blockdev/nd.txt for more details.
> 
> -	  Say Y if you want to use a NVDIMM described by NFIT
> +	  Say Y if you want to use a NVDIMM described by ACPI, E820, etc...
> 
>  config ND_BTT_DEVS
> -	def_bool y
> +	bool
> +
> +config ND_BTT
> +	tristate "BTT: Block Translation Table (atomic sector updates)"
> +	depends on LIBND
> +	default LIBND
> +	select ND_BTT_DEVS

The ND_BTT option, which is presented during a kernel build,
is missing help text. So is E820_PMEM in patch 3/21.

---
Robert Elliott, HP Server Storage
--
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