linux-kernel - Re: [PATCH 2/7] Documentation/devices.txt: Remove /dev/oldmem description

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Date:	Sat, 25 May 2013 16:20:31 -0700
From:	ebiederm@...ssion.com (Eric W. Biederman)
To:	Zhang Yanfei <zhangyanfei.yes@...il.com>
Cc:	Vivek Goyal <vgoyal@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"H. Peter Anvin" <hpa@...or.com>,
	Simon Horman <horms@...ge.net.au>,
	"kexec\@lists.infradead.org" <kexec@...ts.infradead.org>,
	"linux-kernel\@vger.kernel.org" <linux-kernel@...r.kernel.org>,
	davej@...hat.com
Subject: Re: [PATCH 2/7] Documentation/devices.txt: Remove /dev/oldmem description

Zhang Yanfei <zhangyanfei.yes@...il.com> writes:

> From: Zhang Yanfei <zhangyanfei@...fujitsu.com>

Won't we want to keep this reservation around to so that this number
doesn't get reused, and cause people confusion when
upgrading/downgrading kernels?

> Signed-off-by: Zhang Yanfei <zhangyanfei@...fujitsu.com>
> Cc: Dave Jones <davej@...hat.com>
> ---
>  Documentation/devices.txt |    2 --
>  1 files changed, 0 insertions(+), 2 deletions(-)
>
> diff --git a/Documentation/devices.txt b/Documentation/devices.txt
> index 08f01e7..4f85739 100644
> --- a/Documentation/devices.txt
> +++ b/Documentation/devices.txt
> @@ -100,8 +100,6 @@ Your cooperation is appreciated.
>  		 10 = /dev/aio		Asynchronous I/O notification interface
>  		 11 = /dev/kmsg		Writes to this come out as printk's, reads
>  					export the buffered printk records.
> -		 12 = /dev/oldmem	Used by crashdump kernels to access
> -					the memory of the kernel that crashed.
>  
>    1 block	RAM disk
>  		  0 = /dev/ram0		First RAM disk
--
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