linux-kernel - Re: [PATCH] sysfs: Optionally count subdirectories to support buggy applications

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Message-ID: <20120305160953.GA3870@kroah.com>
Date:	Mon, 5 Mar 2012 08:09:53 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	Jiri Slaby <jslaby@...e.cz>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Jiri Slaby <jirislaby@...il.com>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	LKML <linux-kernel@...r.kernel.org>,
	Al Viro <viro@...iv.linux.org.uk>,
	Maciej Rutecki <maciej.rutecki@...il.com>
Subject: Re: [PATCH] sysfs: Optionally count subdirectories to support buggy
 applications

On Mon, Mar 05, 2012 at 02:30:20PM +0100, Jiri Slaby wrote:
> On 02/02/2012 12:18 AM, Linus Torvalds wrote:
> > On Wed, Feb 1, 2012 at 3:15 PM, Linus Torvalds
> > <torvalds@...ux-foundation.org> wrote:
> >>
> >> No extra "keep track of inode counts by hand" crap, and no idiotic
> >> config options that just make it easy to (conditionally) get things
> >> wrong. Just do it right, and do it *unconditionally* right.
> > 
> > And btw, "nlink shows number of subdirectories" for a directory entry
> > really *is* right. It's how Unix filesystems work, like it or not.
> > 
> > It's mainly lazy/bad filesystems that set nlink to 1. So the whole
> > "nlink==1" case is meant for crap like FAT etc, not for a filesystem
> > that we control and that could easily just do it right.
> > 
> > Which is why I detest that config option. It's as if you were asking the user
> > 
> >  "Do you want to make the sysfs filesystem act like crap filesystems?"
> > 
> > and kernel config time. What kind of inane question is that?
> 
> <thread resumed...>
> 
> What's going on here? I still have to revert "sysfs: Kill nlink
> counting." with today's -next to have working sensors.

I don't remember.  I thought there was a proposed patch for this issue
from Eric, but I don't see it in my queue anywhere.

Eric, what was the resolution here?

greg k-h
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