linux-kernel - Re: 2.6.27-rc4-git1: Reported regressions from 2.6.26

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Message-ID: <20080902072642.GX20055@kernel.dk>
Date:	Tue, 2 Sep 2008 09:26:43 +0200
From:	Jens Axboe <jens.axboe@...cle.com>
To:	Christoph Hellwig <hch@...radead.org>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Peter Osterlund <petero2@...ia.com>,
	"Rafael J. Wysocki" <rjw@...k.pl>, Alan Cox <alan@...hat.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Adrian Bunk <bunk@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Natalie Protasevich <protasnb@...il.com>,
	Kernel Testers List <kernel-testers@...r.kernel.org>,
	viro@...iv.linux.org.uk
Subject: Re: 2.6.27-rc4-git1: Reported regressions from 2.6.26

On Thu, Aug 28 2008, Christoph Hellwig wrote:
> On Wed, Aug 27, 2008 at 01:40:10PM -0700, Linus Torvalds wrote:
> > 
> > 
> > On Wed, 27 Aug 2008, Peter Osterlund wrote:
> > > 
> > > Why not just revert the offending change and try again during the next
> > > merge window, assuming someone has figured out an acceptable way to
> > > handle this mess by then?
> > 
> > Well,, for 2.6.27 that's what we'll have to do. But there's actually a 
> > real problem here - the unlocked ioctl's (which we _should_ prefer) have a 
> > strictly weaker and worse interface. I also wonder if any other 
> > block_ioctl users were converted..
> 
> Actually both interfaces are a fscking disaster.  The right things to
> pass is neither and inode nor a file but a struct block_device.  Al had
> all this work done a while and it just needs rebasing to a current tree:
> 
> 	http://git.kernel.org/?p=linux/kernel/git/viro/bdev.git;a=summary

Completely agreed. Al, I remember talking to you about this at the
storage summit back in february. What are your current plans wrt moving
this forward?

-- 
Jens Axboe

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