linux-kernel - Re: [KJ] remove SPIN_LOCK

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Message-ID: <20070410220804.GI26692@parisc-linux.org>
Date:	Tue, 10 Apr 2007 16:08:04 -0600
From:	Matthew Wilcox <matthew@....cx>
To:	"Robert P. J. Day" <rpjday@...dspring.com>
Cc:	Roland Dreier <rdreier@...co.com>, kernelnewbies@...linux.org,
	kernel-janitors@...ts.osdl.org,
	Jan Engelhardt <jengelh@...ux01.gwdg.de>,
	linux-kernel@...r.kernel.org
Subject: Re: [KJ] remove SPIN_LOCK_UNLOCKED

On Tue, Apr 10, 2007 at 05:45:07PM -0400, Robert P. J. Day wrote:
> that works fine if you're defining a single spinlock, but what do you
> do in cases like this:
> 
> arch/sparc/lib/atomic32.c:      [0 ... (ATOMIC_HASH_SIZE-1)] = SPIN_LOCK_UNLOCKED
> 
> that is, when you're assigning an array of them?  you still need some
> kind of generic, unnamed spinlock in those circumstances, no?

That's a special case for architecture-only code.  It's not to be used
by drivers.
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