linux-ext4 - Re: [PATCH 3/3] fs/ext4: create ext4

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Date:   Thu, 11 Jan 2018 15:40:54 -0500
From:   Theodore Ts'o <tytso@....edu>
To:     "Riccardo S." <sirmy15@...il.com>
Cc:     Andreas Dilger <adilger@...ger.ca>,
        linux-ext4 <linux-ext4@...r.kernel.org>
Subject: Re: [PATCH 3/3] fs/ext4: create ext4_kset dynamically

On Tue, Nov 28, 2017 at 11:51:47AM +0100, Riccardo S. wrote:
> On 11/27, Andreas Dilger wrote:
> > On Nov 27, 2017, at 4:18 PM, Riccardo Schirone <sirmy15@...il.com> wrote:
> > > 
> > > -	ext4_feat->kset = &ext4_kset;
> > > +	ext4_feat->kset = ext4_kset;
> > > 	ret = kobject_init_and_add(ext4_feat, &ext4_feat_ktype,
> > > 				   NULL, "features");
> > > 	if (ret)
> > > @@ -455,14 +464,14 @@ int __init ext4_init_sysfs(void)
> > > feat_err:
> > > 	kobject_put(ext4_feat);
> > > kset_err:
> > > -	kset_unregister(&ext4_kset);
> > > +	kset_unregister(ext4_kset);
> > 
> > 
> > It would be prudent in this case to set "ext4_kset = NULL" here
> > so that it isn't cleaned up again somewhere else.  Otherwise,
> > it seems possible that ext4_kset could be cleaned up twice.
> > 
> > Otherwise, the whole premise of this patch seems flawed.
> 
> Right, I'll do it in V2.

I don't think we ever got a V2, so I've applied this patch with
Andreas's suggestions.

  	      	      	    	    	 - Ted