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

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Message-ID: <20120329124609.GA12341@redhat.com>
Date:	Thu, 29 Mar 2012 14:46:10 +0200
From:	"Michael S. Tsirkin" <mst@...hat.com>
To:	Jens Axboe <axboe@...nel.dk>
Cc:	Ren Mingxin <renmx@...fujitsu.com>,
	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 Thu, Mar 29, 2012 at 02:03:55PM +0200, Jens Axboe wrote:
> On 03/29/2012 07:36 AM, Ren Mingxin wrote:
> >  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")?
> 
> Yes, that sounds like the appropriate solution (and name, and where to
> put it).

OK, once this is posted I'll get your ack and
queue for 3.4 with other virtio fixups.

> -- 
> Jens Axboe
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