Re: [PATCH] sysfs: fix hardlink count on device_move

[Peter Oberparleiter]

Greg KH wrote:
> On Tue, Jul 14, 2009 at 05:56:15PM +0200, Peter Oberparleiter wrote:
> > From: Peter Oberparleiter <oberpar@xxxxxxxxxxxxxxxxxx>
> >
> > 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@xxxxxxxxxxxxxxxxxx>
>
> 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.

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