linux-kernel - [PATCH 0/6 RFC] Remove the BKL from sys

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Message-ID: <alpine.LFD.2.00.0910130021440.3658@localhost.localdomain>
Date:	Tue, 13 Oct 2009 00:32:59 +0200 (CEST)
From:	John Kacur <jkacur@...hat.com>
To:	linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>
cc:	Frederic Weisbecker <fweisbec@...il.com>,
	Vincent Sanders <vince@...tec.co.uk>,
	Ingo Molnar <mingo@...e.hu>,
	Christoph Hellwig <hch@...radead.org>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jonathan Corbet <corbet@....net>,
	Mike Frysinger <vapier@...too.org>,
	David Howells <dhowells@...hat.com>,
	Yoshinori Sato <ysato@...rs.sourceforge.jp>,
	Roman Zippel <zippel@...ux-m68k.org>,
	Greg Ungerer <gerg@...inux.org>,
	David Howells <dhowells@...hat.com>,
	Koichi Yasutake <yasutake.koichi@...panasonic.com>
Subject: [PATCH 0/6 RFC] Remove the BKL from sys_execve on various
 architectures

Most of the mainstream architectures such as x86, x86-64 and ppc, do not 
use the bkl in sys_execve.

All of the architectures that still use it, look like copy-and-pastes from 
a time when the mainstream architectures did use it. In addition, all of 
the call-outs appear to be to generic functions that are safe to use 
without the bkl. Therefore, I believe it should be safe to simply remove.

However, the bkl does some surprising things, and I could be wrong. So 
please have a look at let us know if there is a reason why your 
architecture does indeed need the bkl in sys_execve.

Even better, grab the relevant patch and do some testing and report back.

Thank you in advance.

John Kacur
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