linux-kernel - Re: [PATCH 2/2] fs: Support compiling out sendfile

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Date:	Tue, 21 Oct 2014 13:20:30 -0400
From:	Eric Paris <eparis@...hat.com>
To:	josh@...htriplett.org
Cc:	"H. Peter Anvin" <hpa@...or.com>, Pieter Smith <pieter@...sman.nl>,
	Alexander Viro <viro@...iv.linux.org.uk>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Matt Turner <mattst88@...il.com>,
	Michal Hocko <mhocko@...e.cz>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Fabian Frederick <fabf@...net.be>, Tejun Heo <tj@...nel.org>,
	蔡正龙 <zhenglong.cai@...c.com.cn>,
	"Luis R. Rodriguez" <mcgrof@...e.com>,
	Peter Foley <pefoley2@...oley.com>,
	Konstantin Khlebnikov <koct9i@...il.com>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Oleg Nesterov <oleg@...hat.com>,
	Andy Lutomirski <luto@...capital.net>,
	David Herrmann <dh.herrmann@...il.com>,
	Kees Cook <keescook@...omium.org>,
	linux-fsdevel@...r.kernel.org,
	open list <linux-kernel@...r.kernel.org>,
	ABI/API <linux-api@...r.kernel.org>
Subject: Re: [PATCH 2/2] fs: Support compiling out sendfile

On Tue, 2014-10-21 at 10:18 -0700, josh@...htriplett.org wrote:
> On Tue, Oct 21, 2014 at 08:37:00AM -0700, H. Peter Anvin wrote:
> > On 10/20/2014 02:48 PM, Pieter Smith wrote:
> > > Many embedded systems will not need this syscall, and omitting it
> > > saves space.  Add a new EXPERT config option CONFIG_SENDFILE_SYSCALL
> > > (default y) to support compiling it out.
> > 
> > <bikeshed>
> > I believe these options ought to be CONFIG_SYSCALL_*
> > </bikeshed>
> 
> I agree.  I think people started using CONFIG_*_SYSCALL because of
> things like AUDITSYSCALL 

AUDITSYSCALL audits syscalls.  It doesn't actually implement any
syscalls.  You are right about SYSFS_SYSCALL though...

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