linux-kernel - Re: [PATCH v2 02/17] security: make security_file_set_fowner, f_setown and __f

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Message-ID: <20141007171703.GA30274@infradead.org>
Date:	Tue, 7 Oct 2014 10:17:03 -0700
From:	Christoph Hellwig <hch@...radead.org>
To:	Dmitry Kasatkin <dmitry.kasatkin@...il.com>
Cc:	Jeff Layton <jlayton@...marydata.com>,
	linux-fsdevel@...r.kernel.org, linux-nfs@...r.kernel.org,
	Christoph Hellwig <hch@...radead.org>,
	"J. Bruce Fields" <bfields@...ldses.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	linux-security-module <linux-security-module@...r.kernel.org>
Subject: Re: [PATCH v2 02/17] security: make security_file_set_fowner,
 f_setown and __f_setown void return

On Tue, Oct 07, 2014 at 08:11:42PM +0300, Dmitry Kasatkin wrote:
> If file_set_fowner op is now type of "void", how you can actually
> return the value?
> I think compiler must give error. How could you compile it?

Returning void values is a GNU extension.  I've seen it in a few
places in the kernel.  Although in general I'd prefer it we'd remove
it (and have the compiler warn about it).

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