linux-kernel - Re: [PATCH] virtio_blk: add helper function to support mass of disks naming

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Message-ID: <4F73F4E6.4060104@cn.fujitsu.com>
Date:	Thu, 29 Mar 2012 13:36:38 +0800
From:	Ren Mingxin <renmx@...fujitsu.com>
To:	"Michael S. Tsirkin" <mst@...hat.com>, jens.axboe@...cle.com
CC:	Rusty Russell <rusty@...tcorp.com.au>,
	LKML <linux-kernel@...r.kernel.org>, Tejun Heo <tj@...nel.org>,
	kvm@...r.kernel.org, virtualization@...ts.linux-foundation.org,
	linux-scsi@...r.kernel.org
Subject: Re: [PATCH] virtio_blk: add helper function to support mass of disks
 naming

  On 03/28/2012 06:58 PM, Michael S. Tsirkin wrote:
> On Wed, Mar 28, 2012 at 02:54:43PM +0800, Ren Mingxin wrote:
>>   Hi,
>>
>> The current virtblk's naming algorithm just supports 26^3
>> disks. If there are mass of virtblks(exceeding 26^3), there
>> will be disks with the same name.
>>
>> According to "sd_format_disk_name()", I add function
>> "virtblk_name_format()" for virtblk to support mass of
>> disks.
>>
>> Signed-off-by: Ren Mingxin<renmx@...fujitsu.com>
> Nod. This is basically what 3e1a7ff8a0a7b948f2684930166954f9e8e776fe
> did. Except, maybe we should move this function into block core
> instead of duplicating it? Where would be a good place to put it?

Yes, this was also what I thought.

How about placing the "sd_format_disk_name()"
as "disk_name_format()" into "block/genhd.c"
("include/linux/genhd.h")?

Thanks.
Ren
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