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

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Message-ID: <20111202194219.GU24062@one.firstfloor.org>
Date:	Fri, 2 Dec 2011 20:42:19 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	Greg KH <greg@...ah.com>
Cc:	Andi Kleen <andi@...stfloor.org>, 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 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.

-Andi

-- 
ak@...ux.intel.com -- Speaking for myself only.
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