linux-kernel - Re: [PATCH] sysfs: fix hardlink count on device

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Date:	Wed, 15 Jul 2009 06:20:36 -0700
From:	Greg KH <gregkh@...e.de>
To:	Peter Oberparleiter <oberpar@...ux.vnet.ibm.com>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] sysfs: fix hardlink count on device_move

On Wed, Jul 15, 2009 at 11:17:43AM +0200, Peter Oberparleiter wrote:
> Greg KH wrote:
> > On Tue, Jul 14, 2009 at 05:56:15PM +0200, Peter Oberparleiter wrote:
> >> From: Peter Oberparleiter <oberpar@...ux.vnet.ibm.com>
> >>
> >> Update directory hardlink count when moving kobjects to a new parent.
> >> Fixes the following problem which occurs when several devices are
> >> moved to the same parent and then unregistered:
> >>
> >>> ls -laF /sys/devices/css0/defunct/
> >>> total 0
> >>> drwxr-xr-x 4294967295 root root    0 2009-07-14 17:02 ./
> >>> drwxr-xr-x        114 root root    0 2009-07-14 17:02 ../
> >>> drwxr-xr-x          2 root root    0 2009-07-14 17:01 power/
> >>> -rw-r--r--          1 root root 4096 2009-07-14 17:01 uevent
> >> Signed-off-by: Peter Oberparleiter <oberpar@...ux.vnet.ibm.com>
> > 
> > Thanks for the patch.
> > 
> > Is this something new in 2.6.31-rc, or does it also show up in .30
> > and/or .27?
> 
> This is an old problem that existed since the introduction of 
> sysfs_move_dir() in 2.6.20.

Thanks for the info, I'll mark it as such.

greg k-h
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