linux-kernel - Re: [PATCH] block: add partition attribute for partition number

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Message-ID: <20081013112751.GI19428@kernel.dk>
Date:	Mon, 13 Oct 2008 13:27:51 +0200
From:	Jens Axboe <jens.axboe@...cle.com>
To:	Tejun Heo <tj@...nel.org>
Cc:	"H. Peter Anvin" <hpa@...or.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Ingo Molnar <mingo@...e.hu>, linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Yinghai Lu <yinghai@...nel.org>
Subject: Re: [PATCH] block: add partition attribute for partition number

On Mon, Oct 13 2008, Tejun Heo wrote:
> With extended devt, finding out the partition number becomes a bit
> more challenging as subtracting the minor number from that of the
> parent device doesn't work anymore.  The only thing left is parsing
> the partition name which is brittle and not exactly universal (some
> have '-' between the device name and partition number while others
> don't).  This patch introduced partition attribute which contains the
> partition number of the device.  This should make finding partitions
> and its index easier.
> 
> This problem and solution were suggested by H. Peter Anvin.

Applied to for-linus

-- 
Jens Axboe

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