From mboxrd@z Thu Jan  1 00:00:00 1970
From: James Bottomley <James.Bottomley@HansenPartnership.com>
Subject: Re: What to do about the 2TB limit on HDIO_GETGEO ?
Date: Tue, 15 Apr 2008 09:20:02 -0500
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To: Andrew Morton <akpm@linux-foundation.org>
Cc: Dan Williams <dan.j.williams@intel.com>, "H. Peter Anvin" <hpa@zytor.com>, Kay Sievers <kay.sievers@vrfy.org>, Tejun Heo <htejun@gmail.com>, Mark Lord <lkml@rtr.ca>, Greg KH <gregkh@suse.de>, Jens Axboe <axboe@kernel.dk>, Jeff Garzik <jgarzik@pobox.com>, Linus Torvalds <torvalds@linux-foundation.org>, Linux Kernel <linux-kernel@vger.kernel.org>, IDE/ATA development list <linux-ide@vger.kernel.org>, linux-scsi <linux-scsi@vger.kernel.org>

On Tue, 2008-04-15 at 00:18 -0700, Andrew Morton wrote:
> On Fri, 11 Apr 2008 16:25:32 -0700 "Dan Williams" <dan.j.williams@intel.com> wrote:
> 
> > >  It doesn't really seem to be to belong under class at all.  I would suggest
> > > /sys/dev/char/ and /sys/dev/block/, for char and block respectively.
> > >
> > 
> > This thread fizzled out without a patch... here goes:
> > 
> > ...
> >
> > sysfs: add /sys/dev/{char,block} to lookup sysfs path by major:minor
> 
> Crickets are chirping and I can't remember what the conclusion to all this
> was.  In fact the thread was more than ten-deep so I probably fell asleep.
> 
> I queued it up so that others cannot do the same ;)

The expressed preference was simply to expand the ioctl (or add a new
one that got the required information without having to go through the
old HDIOGETGEO path to extract the value from a fictitious geometry).

Greg was a bit sceptical of the value of the above proposal ...

James