linux-kernel - Re: What to do about the 2TB limit on HDIO

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Message-ID: <47E90458.7030801@zytor.com>
Date:	Tue, 25 Mar 2008 06:55:36 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Mark Lord <lkml@....ca>
CC:	Greg KH <gregkh@...e.de>, Jens Axboe <axboe@...nel.dk>,
	Jeff Garzik <jgarzik@...ox.com>, Tejun Heo <htejun@...il.com>,
	Linus Torvalds <torvalds@...l.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	IDE/ATA development list <linux-ide@...r.kernel.org>,
	linux-scsi <linux-scsi@...r.kernel.org>
Subject: Re: What to do about the 2TB limit on HDIO_GETGEO ?

Mark Lord wrote:
> 
> Yeah, that would be just as good, really.  Maybe even better.
> 
> Mark Lord wrote (later on):
>> Instead, software has to search everything inside /sys/block/
>> looking for a "dev" file whose contents match,
>> rather than just trying to access something like this:
>>
>>   /sys/block/8:1/start
>> or
>>   /sys/block/majors/8/minors/1/start
>>
>> Or any one of a number of similar ways to arrange it. 
> ..
> 

It shouldn't be under /sys/block... there are enough many things that 
scan /sys/block and assume any directory underneath it has the current 
format.

	-hpa
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