linux-kernel - Re: [Linux-nvdimm] [PATCH v2 04/20] libnd: ndctl class device, and nd bus attributes

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Message-ID: <x49lhgpwo87.fsf@segfault.boston.devel.redhat.com>
Date:	Fri, 15 May 2015 17:00:08 -0400
From:	Jeff Moyer <jmoyer@...hat.com>
To:	Dan Williams <dan.j.williams@...el.com>
Cc:	linux-nvdimm@...1.01.org, Neil Brown <neilb@...e.de>,
	Greg KH <gregkh@...uxfoundation.org>,
	"Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
	Robert Moore <robert.moore@...el.com>,
	linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org
Subject: Re: [Linux-nvdimm] [PATCH v2 04/20] libnd: ndctl class device, and nd bus attributes

Dan Williams <dan.j.williams@...el.com> writes:

> This is the position (device topology) independent method to find all
> the libnd buses in the system.  The expectation is that there will only
> ever be one "nd" bus discovered via /sys/class/nd/ndctl0.  However, we
> allow for the possibility of multiple buses and they will listed in
> discovery order as ndctl0...ndctlN.  This character device hosts the
> ioctl for passing control messages (inspired by the ACPI-NFIT DSM
> interface commands).
>
> Note, nd_ioctl() and the backing ->ndctl() implementation are defined in
> a subsequent patch.

Acked-by: Jeff Moyer <jmoyer@...hat.com>
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