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

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Message-Id: <20080515.010139.219194657.davem@davemloft.net>
Date:	Thu, 15 May 2008 01:01:39 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	cornelia.huck@...ibm.com
Cc:	shemminger@...tta.com, greg@...ah.com, fubar@...ibm.com,
	netdev@...r.kernel.org, bonding-devel@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/3] sysfs: remove error messages for -EEXIST case

From: Cornelia Huck <cornelia.huck@...ibm.com>
Date: Thu, 15 May 2008 09:52:46 +0200

> >  int sysfs_add_one(struct sysfs_addrm_cxt *acxt, struct sysfs_dirent *sd)
> >  {
> > -	if (sysfs_find_dirent(acxt->parent_sd, sd->s_name)) {
> > -		printk(KERN_WARNING "sysfs: duplicate filename '%s' "
> > -		       "can not be created\n", sd->s_name);
> > -		WARN_ON(1);
> > +	if (sysfs_find_dirent(acxt->parent_sd, sd->s_name))
> >  		return -EEXIST;
> > -	}
> > 
> >  	sd->s_parent = sysfs_get(acxt->parent_sd);
> 
> ...but this will cause many useful warnings to disappear.
> 
> What to do here?

Make a __sysfs_add_one() that doesn't warn.   Make
sysfs_add_one() be a wrapper around __sysfs_add_one()
that warns.

Change networking to call __sysfs_add_one().

Repeat and rinse up the call chain, as needed.

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