linux-kernel - Re: [PATCH 1/3] DEBUGFS: Automatically create parents for debugfs files

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Date:	Fri, 2 Dec 2011 11:58:09 -0800
From:	Greg KH <greg@...ah.com>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	fengguang.wu@...el.com, Andi Kleen <ak@...ux.intel.com>
Subject: Re: [PATCH 1/3] DEBUGFS: Automatically create parents for debugfs
 files

On Fri, Dec 02, 2011 at 08:42:19PM +0100, Andi Kleen wrote:
> On Fri, Dec 02, 2011 at 11:17:24AM -0800, Greg KH wrote:
> > I like this, but some documentation will probably need to be added
> > somwhere saying that it's now legal to create a debugfs file with
> > "this/is/a/tree" and have it all be expanded out.
> 
> Ok. Updating the kerneldoc entries.
> 
> > 
> > And yes, cleaning up the directories shouldn't be a big issue, but what
> > if the directory is already there and it tries to be created again?
> > Shouldn't you do a lookup first and use that dentry if it's there?
> 
> In this case debugfs_create_dir() errors out, the caller ignores
> the error and just looks it up. So yes should work.

Ah, ok, nevermind then :)

thanks,

greg k-h
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