linux-kernel - Re: [PATCHSET] block/SCSI: implement in-kernel disk event handling, take#2

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Message-ID: <4D0A4196.8040209@kernel.dk>
Date:	Thu, 16 Dec 2010 17:43:02 +0100
From:	Jens Axboe <axboe@...nel.dk>
To:	Kay Sievers <kay.sievers@...y.org>
CC:	Tejun Heo <tj@...nel.org>, jeff@...zik.org,
	linux-ide@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-scsi@...r.kernel.org, jack@...e.cz,
	James.Bottomley@...senpartnership.com
Subject: Re: [PATCHSET] block/SCSI: implement in-kernel disk event handling,
 take#2

On 2010-12-16 17:41, Kay Sievers wrote:
> On Thu, Dec 16, 2010 at 17:36, Jens Axboe <axboe@...nel.dk> wrote:
>> On 2010-12-16 17:31, Tejun Heo wrote:
>>> On 12/08/2010 08:57 PM, Tejun Heo wrote:
>>>> This is the second take of in-kernel-disk-event patchset which
>>>> implements in-kernel disk event handling framework and adds support
>>>> for it to sr and sd.  This is largely to move media presence polling
>>>> into kernel as userspace implementation turned out to be quite
>>>> problematic over the years.
>>>
>>> Kay, Jens, James, how does this look to you guys?
>>
>> I like the concept, this is probably what we should have done all along.
>> The user space method has been tried and failed. So I was mostly laying
>> it low waiting for feedback before integrating this.
> 
> Yeah, it's nice stuff. Userspace works, but can not be made entirely
> safe. We have (rare) bugs we just can not fix otherwise than disabling
> polling.
> 
>> Kay?
> 
> I want it! :)
> 
> If you merge it, let me know when you have a tree ready, so I can test
> the most recent version again.

OK good, looks like we all agree... I'll queue it up in for-2.6.38
branch and update for-next to have all that stuff.

-- 
Jens Axboe

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