linux-kernel - Re: [PATCH 5/5] CUSE: implement CUSE

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Message-ID: <4927C75B.9080509@kernel.org>
Date:	Sat, 22 Nov 2008 17:48:27 +0900
From:	Tejun Heo <tj@...nel.org>
To:	Miklos Szeredi <miklos@...redi.hu>
CC:	linux-kernel@...r.kernel.org, fuse-devel@...ts.sourceforge.net,
	akpm@...ux-foundation.org, greg@...ah.com
Subject: Re: [PATCH 5/5] CUSE: implement CUSE - Character device in Userspace

Miklos Szeredi wrote:
> On Sat, 22 Nov 2008, Tejun Heo wrote:
>> Miklos Szeredi wrote:
>>> On Thu, 20 Nov 2008, Tejun Heo wrote:
>>>> diff --git a/include/linux/miscdevice.h b/include/linux/miscdevice.h
>>>> index 0be9245..d4dcca8 100644
>>>> --- a/include/linux/miscdevice.h
>>>> +++ b/include/linux/miscdevice.h
>>>> @@ -28,6 +28,7 @@
>>>>  #define MPT_MINOR		220
>>>>  #define	HPET_MINOR		228
>>>>  #define FUSE_MINOR		229
>>>> +#define CUSE_MINOR		230
>>> This doesn't work: device numbers have to be allocated by LANANA.
>> My last attempt at LANANA for extended devt didn't get me anywhere and
>> I'm not sure LANANA is handling miscdevice minors at all.
> 
> Back then I did get the fuse device registered in LANANA database
> (http://www.lanana.org/docs/device-list/devices-2.6+.txt)

I switched it back to dynamic minor, so it's a non-issue now.

>>   If you go
>> through the tree, there are quite a few duplicate allocations including
>> FUSE_MINOR.  At any rate, we can definitely try LANANA.
> 
> Ugh, I suppose that's my fault for not putting the definition in
> miscdevice.h (though apparently the duplicates didn't do so either).

Miscdevice minors are spread all over the place especially under archs.
 I tried to move all of them into miscdevice.h but I got scared by the
dups.  :-)

Thanks.

-- 
tejun
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