linux-kernel - Re: [PATCH 1/7][QUOTA] Move sysctl management code under ifdef CONFIG

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Message-ID: <475540D9.9010109@openvz.org>
Date:	Tue, 04 Dec 2007 14:58:17 +0300
From:	Pavel Emelyanov <xemul@...nvz.org>
To:	Andrew Morton <akpm@...ux-foundation.org>
CC:	"Eric W. Biederman" <ebiederm@...ssion.com>,
	linux-kernel@...r.kernel.org, devel@...nvz.org
Subject: Re: [PATCH 1/7][QUOTA] Move sysctl management code under ifdef CONFIG_SYSCTL

[snip]

>> We do have some current code in the network stack that fails miserably
>> when  register_sysctl_table returns NULL, and there are explicit
>> checks for that.
> 
> So that code would be failing today with CONFIG_SYSCTL=n?  Unless the
> failing code is itself under #ifdef CONFIG_SYSCTL, in which case we don't
> need to change anything?

Exactly! If the code checks for the return value it won't work
with CONFIG_SYSCTL=n, if it dies not - it may happily use the
sysctl stub and avoid extra ifdefs.

But this difference looks clumsy :(

Thanks,
Pavel
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