From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <owner-linux-mm@kvack.org>
Received: from mail138.messagelabs.com (mail138.messagelabs.com [216.82.249.35])
	by kanga.kvack.org (Postfix) with ESMTP id 43D9C6B01F2
	for <linux-mm@kvack.org>; Thu, 19 Aug 2010 16:30:08 -0400 (EDT)
Message-Id: <20100819201317.673172547@chello.nl>
Date: Thu, 19 Aug 2010 22:13:17 +0200
From: Peter Zijlstra <a.p.zijlstra@chello.nl>
Subject: [RFC][PATCH 0/6] mm, highmem: kmap_atomic rework
Sender: owner-linux-mm@kvack.org
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>, Ingo Molnar <mingo@elte.hu>, Thomas Gleixner <tglx@linutronix.de>, "H. Peter Anvin" <hpa@zytor.com>, Russell King <rmk@arm.linux.org.uk>, David Howells <dhowells@redhat.com>, Ralf Baechle <ralf@linux-mips.org>, David Miller <davem@davemloft.net>, Paul Mackerras <paulus@samba.org>, Benjamin Herrenschmidt <benh@kernel.crashing.org>, Hugh Dickins <hughd@google.com>, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-arch@vger.kernel.org, Peter Zijlstra <a.p.zijlstra@chello.nl>
List-ID: <linux-mm.kvack.org>


This patch-set reworks the kmap_atomic API to be a stack based, instead of
static slot based. Some might remember this from last year, some not ;-)

The advantage is that you no longer need to worry about KM_foo, the
disadvantage is that kmap_atomic/kunmap_atomic now needs to be strictly
nested (CONFIG_HIGHMEM_DEBUG should complain in case its not) -- and of
course its a big massive patch changing a widely used API.

The patch-set is currently based on tip/master as of today, and compile
tested on: i386-all{mod,yes}config, mips-yosemite_defconfig,
sparc-sparc32_defconfig, powerpc-ppc6xx_defconfig, and some arm config.

(Sorry dhowells, I again couldn't find frv/mn10300 compilers)

Boot tested with i386-defconfig on kvm.

Since its a rather large set, and somewhat tedious to rebase, I wanted to
ask how to go about getting this merged?

--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org.  For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>