linux-kernel - Re: [PATCHv4] virtio-blk: use ida to allocate disk index

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Date:	Mon, 31 Oct 2011 08:05:55 +0100
From:	Jens Axboe <axboe@...nel.dk>
To:	"Michael S. Tsirkin" <mst@...hat.com>
CC:	Rusty Russell <rusty@...tcorp.com.au>, Tejun Heo <tj@...nel.org>,
	virtualization@...ts.linux-foundation.org, kvm@...r.kernel.org,
	linux-kernel@...r.kernel.org, Greg Kroah-Hartman <gregkh@...e.de>
Subject: Re: [PATCHv4] virtio-blk: use ida to allocate disk index

On 2011-10-30 20:29, Michael S. Tsirkin wrote:
> Based on a patch by Mark Wu <dwu@...hat.com>
> 
> Current index allocation in virtio-blk is based on a monotonically
> increasing variable "index". This means we'll run out of numbers
> after a while.  It also could cause confusion about the disk
> name in the case of hot-plugging disks.
> Change virtio-blk to use ida to allocate index, instead.
> 
> Signed-off-by: Michael S. Tsirkin <mst@...hat.com>
> ---
> 
> Changes from Mark's versions:
>  use the new ida_simple_get
>  error handling cleanup
>  fix user after free
> 
> Works fine for me.
> 
> Jens, could you merge this for 3.2?
> That is, unless Rusty complains shortly ...

Yep, tentatively added.

-- 
Jens Axboe

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