linux-kernel - Re: regarding major number of block extended devt

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Message-ID: <48BD9F36.8000704@zytor.com>
Date:	Tue, 02 Sep 2008 13:16:54 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Tejun Heo <tj@...nel.org>
CC:	device@...ana.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Jens Axboe <jens.axboe@...cle.com>
Subject: Re: regarding major number of block extended devt

Tejun Heo wrote:
> Tejun Heo wrote:
>> Hello,
>>
>> Extended devt is scheduled for 2.6.28 merge and is currently using 259.
>> Can extended devt keep this major or should it use something else?
> 
> Oops, I forgot to write information about ext devt.
> 
>  259 block	Block extended device numbers
> 
> 		This is pool of dynamically allocated block device
> 		numbers.  Currently, ide and sd overflows into this
> 		region if there are more partitions than the existing
> 		device number scheme can accomodate, but any block
> 		device can use it and it's not restricted to
> 		overflows.
> 

It would seem better to simply use the high minors on the 
already-existing ide and scsi majors?

	-hpa
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