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From: Joel Becker <Joel.Becker@oracle.com>
To: Louis Rilling <Louis.Rilling@kerlabs.com>
Cc: Joel.Becker@localdomain,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Mark Fasheh <mfasheh@suse.com>,
	linux-kernel@vger.kernel.org, ocfs2-devel@oss.oracle.com,
	Andrew Morton <akpm@linux-foundation.org>
Subject: [Ocfs2-devel] [git patches] Ocfs2 and Configfs updates for	2.6.27
Date: Fri, 18 Jul 2008 15:22:14 -0700	[thread overview]
Message-ID: <20080718222214.GB659@ca-server1.us.oracle.com> (raw)
In-Reply-To: <20080718084803.GB3887@localdomain>

On Fri, Jul 18, 2008 at 10:48:03AM +0200, Louis Rilling wrote:
> > Linus,
> > 	Pull this to get the revert and the PTR_ERR() version:
> > 
> > git://oss.oracle.com/git/jlbec/linux-2.6.git configfs-fixup-ptr-error
> > 
> > It's tested with the same testing I did before - ocfs2 and netconsole.
> 
> While this new version looks ok, it seems that it still allows client
> subsystems to return NULL in ->make_group()/->make_item(), in which case
> configfs_mkdir() turns the result into -ENOMEM. Maybe this is intended to
> smoothly update out-of-tree subsystems? I'd suggest to schedule a removal
> of this backward compatibility, and display an error log to encourage
> fixing the subsystems that still return NULL.

	It is precisely to keep out-of-tree modules from crashing.
There's no easy way to make them know it changed otherwise :-)  It could
certainly BUG or WARN before making the fixup.

Joel

-- 

"I'm drifting and drifting
 Just like a ship out on the sea.
 Cause I ain't got nobody, baby,
 In this world to care for me."

Joel Becker
Principal Software Developer
Oracle
E-mail: joel.becker at oracle.com
Phone: (650) 506-8127

WARNING: multiple messages have this Message-ID (diff)
From: Joel Becker <Joel.Becker@oracle.com>
To: Louis Rilling <Louis.Rilling@kerlabs.com>
Cc: Joel.Becker@localdomain,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Mark Fasheh <mfasheh@suse.com>,
	linux-kernel@vger.kernel.org, ocfs2-devel@oss.oracle.com,
	Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [Ocfs2-devel] [git patches] Ocfs2 and Configfs updates for 2.6.27
Date: Fri, 18 Jul 2008 15:22:14 -0700	[thread overview]
Message-ID: <20080718222214.GB659@ca-server1.us.oracle.com> (raw)
In-Reply-To: <20080718084803.GB3887@localdomain>

On Fri, Jul 18, 2008 at 10:48:03AM +0200, Louis Rilling wrote:
> > Linus,
> > 	Pull this to get the revert and the PTR_ERR() version:
> > 
> > git://oss.oracle.com/git/jlbec/linux-2.6.git configfs-fixup-ptr-error
> > 
> > It's tested with the same testing I did before - ocfs2 and netconsole.
> 
> While this new version looks ok, it seems that it still allows client
> subsystems to return NULL in ->make_group()/->make_item(), in which case
> configfs_mkdir() turns the result into -ENOMEM. Maybe this is intended to
> smoothly update out-of-tree subsystems? I'd suggest to schedule a removal
> of this backward compatibility, and display an error log to encourage
> fixing the subsystems that still return NULL.

	It is precisely to keep out-of-tree modules from crashing.
There's no easy way to make them know it changed otherwise :-)  It could
certainly BUG or WARN before making the fixup.

Joel

-- 

"I'm drifting and drifting
 Just like a ship out on the sea.
 Cause I ain't got nobody, baby,
 In this world to care for me."

Joel Becker
Principal Software Developer
Oracle
E-mail: joel.becker@oracle.com
Phone: (650) 506-8127

  reply	other threads:[~2008-07-18 22:22 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-07-17 17:51 [Ocfs2-devel] [git patches] Ocfs2 and Configfs updates for 2.6.27 Mark Fasheh
2008-07-17 17:51 ` Mark Fasheh
2008-07-17 18:01 ` [Ocfs2-devel] " Linus Torvalds
2008-07-17 18:01   ` Linus Torvalds
2008-07-17 21:20   ` [Ocfs2-devel] " Joel Becker
2008-07-17 21:20     ` Joel Becker
2008-07-17 21:45     ` [Ocfs2-devel] " Joel Becker
2008-07-17 21:45       ` Joel Becker
2008-07-17 22:30       ` Joel Becker
2008-07-17 22:30         ` Joel Becker
2008-07-18  8:48         ` Louis Rilling
2008-07-18  8:48           ` Louis Rilling
2008-07-18 22:22           ` Joel Becker [this message]
2008-07-18 22:22             ` Joel Becker
  -- strict thread matches above, loose matches on Subject: below --
2008-07-14 22:01 Mark Fasheh

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