linux-kernel - Re: [PATCH 2/3] fs: Extracts pivot

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Date:   Sat, 25 Feb 2017 10:22:21 -0500
From:   Theodore Ts'o <tytso@....edu>
To:     bosrsf04@...il.com
Cc:     Alexander Viro <viro@...iv.linux.org.uk>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Kees Cook <keescook@...omium.org>,
        Arnd Bergmann <arnd@...db.de>, Ingo Molnar <mingo@...nel.org>,
        Ard Biesheuvel <ard.biesheuvel@...aro.org>,
        Andy Lutomirski <luto@...nel.org>,
        Nicolas Pitre <nicolas.pitre@...aro.org>,
        Petr Mladek <pmladek@...e.com>, Helge Deller <deller@....de>,
        Rik van Riel <riel@...hat.com>,
        Thomas Garnier <thgarnie@...gle.com>,
        Parav Pandit <pandit.parav@...il.com>,
        "seokhoon . yoon" <iamyooon@...il.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Dave Hansen <dave.hansen@...el.com>,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        josh@...htriplett.org, brkkurek192@...il.com, conorcurry@...il.com,
        fanofbond138@...il.com
Subject: Re: [PATCH 2/3] fs: Extracts pivot_root so it can be made optional

If you're only going to be removing a single function, instead of
having to export a bunch of previously-static functions, my preference
would be to just insert a pair of #ifdef CONFIG_PIVOT_ROOT_SYSCALL / #endif
statements around the function in question.

Is it worth it to save 600-odd bytes?  Shrug; but if that's what you
are after, I'd suggest doing it the simplest and least-instrusive way
possible.

Cheers,

						- Ted