linux-kernel - Re: [PATCH] asm-generic: add another generic ext2 atomic bitops

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Message-Id: <201106031800.22298.arnd@arndb.de>
Date:	Fri, 3 Jun 2011 18:00:22 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	Akinobu Mita <akinobu.mita@...il.com>
Cc:	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
	linux-arch@...r.kernel.org
Subject: Re: [PATCH] asm-generic: add another generic ext2 atomic bitops

On Wednesday 01 June 2011, Akinobu Mita wrote:
> The majority of architectures implement ext2 atomic bitops as
> test_and_{set,clear}_bit() without spinlock.
> 
> This adds this type of generic implementation in ext2-atomic.h and
> use it wherever possible.

The idea sounds really good, but I'm trying to keep the number of
ARCH_* macros low. How about instead providing a new
asm-generic/bitops/ext2-atomic-setbit.h or similar?

Each architecture can then include either the spinlock or the
atomic bitop based version.

	Arnd
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