linux-kernel - Re: [patch 2/2] Remove a few inlines in fs/namei.c

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Message-ID: <20080729185537.GI28946@ZenIV.linux.org.uk>
Date:	Tue, 29 Jul 2008 19:55:37 +0100
From:	Al Viro <viro@...IV.linux.org.uk>
To:	Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>
Cc:	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	akpm@...ux-foundation.org
Subject: Re: [patch 2/2] Remove a few inlines in fs/namei.c

On Tue, Jul 29, 2008 at 05:52:31PM +0200, Thomas Petazzoni wrote:
> Uninline may_create() and do_follow_link() and use vfs_follow_link()
> instead of __vfs_follow_link() in __do_follow_link(). It allows to
> slightly reduce the size of kernel code:
> 
>    text	   data	    bss	    dec	    hex	filename
> 1114299	 118564	 212992	1445855	 160fdf	vmlinux.old
> 1112971	 118564	 212992	1444527	 160aaf	vmlinux
>   -1328       0       0   -1328    -530 +/-
> 
> This patch is part of the Linux Tiny project and has been originally
> written by Matt Mackall <mpm@...enic.com>

Absolutely not.  do_follow_link() et.al. are parts of mutual recursion
loop and we need to reduce the use of kernel *stack*.
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