linux-kernel - Re: [PATCH v4 06/15] fs,fork,exit: export symbols necessary for KUnit UAPI support

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Message-ID: <20250716072228-2dc39361-80b4-4603-8c20-4670a41e06ec@linutronix.de>
Date: Wed, 16 Jul 2025 07:30:46 +0200
From: Thomas Weißschuh <thomas.weissschuh@...utronix.de>
To: Al Viro <viro@...iv.linux.org.uk>, 
	Luis Chamberlain <mcgrof@...nel.org>
Cc: Kees Cook <kees@...nel.org>, Christian Brauner <brauner@...nel.org>, 
	Jan Kara <jack@...e.cz>, linux-mm@...ck.org, linux-fsdevel@...r.kernel.org, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 06/15] fs,fork,exit: export symbols necessary for
 KUnit UAPI support

On Mon, Jul 14, 2025 at 07:52:28AM +0200, Thomas Weißschuh wrote:
> On Fri, Jul 11, 2025 at 04:44:23PM +0100, Al Viro wrote:

(...)

> > On Fri, Jul 11, 2025 at 12:35:59PM +0200, Thomas Weißschuh wrote:
> > > could you take a look at these new symbol exports?
> > 
> > > > +EXPORT_SYMBOL_GPL_FOR_MODULES(put_filesystem, "kunit-uapi");
> > 
> > What's that one for???
> 
> What are you referring to?

Reading this again you probably asked why put_filesystem() is exported.

As I see it, that should be called after being done with the return value of
get_fs_type(). Not that it does anything for the always built-in ramfs.
The alternatives I see are a commented-out variant with an explanation or
making put_filesystem() into an inline function.


Thomas