Re: [PATCH 2/3] sysfs: remove error messages for -EEXIST case

[David Miller]

From: Stephen Hemminger <shemminger@xxxxxxxxxx>
Date: Wed, 14 May 2008 18:16:03 -0700

> It is possible that the entry in sysfs already exists, one case of this is
> when a network device is renamed to bonding_masters. Anyway, in this case
> the proper error path is for device_rename to return an error code, not to
> generate bogus backtrace and errors.
> 
> Also, to avoid possible races, the create link should be done before the
> remove link. This makes a device rename atomic operation like other renames.
> 
> Signed-off-by: Stephen Hemminger <shemminger@xxxxxxxxxx>

I definitely agree with this change.

We have several cases where device names are user configurable,
yet the devices live in a directory which also has subdirectories
created by other subsystems.

It's pointless to require the top-level guy to look for any
purge out any subdirectory cases, that's none of it's business.

I realize the backtrace is useful for finding bugs, but in this
case it's definitely not appropriate.
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