linux-kernel - Re: [PATCH 2/7] kfifo: move out spinlock

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Message-ID: <20090816235843.0f7f11de@lxorguk.ukuu.org.uk>
Date:	Sun, 16 Aug 2009 23:58:43 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Stefani Seibold <stefani@...bold.net>
Cc:	linux-kernel <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Arnd Bergmann <arnd@...db.de>,
	Andi Kleen <andi@...stfloor.org>,
	Amerigo Wang <xiyou.wangcong@...il.com>,
	Joe Perches <joe@...ches.com>
Subject: Re: [PATCH 2/7] kfifo: move out spinlock

On Sun, 16 Aug 2009 22:46:30 +0200
Stefani Seibold <stefani@...bold.net> wrote:

> Move the pointer to the spinlock out of struct kfifo. Most
> users in tree do not actually use a spinlock, so the few
> exceptions now have to call kfifo_{get,put}_locked, which takes
> an extra argument to a spinlock.

NAK this one for the moment

We are about to set fifo loose through all the USB and some other
char/serial drivers all of which will use the spinlock facility.
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