linux-kernel - Re: [PATCH] Rename DECLARE_MUTEX to DEFINE

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Date:	Sun, 26 Oct 2008 15:41:03 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Leon Woestenberg <leon.woestenberg@...il.com>
Cc:	Marcin Slusarz <marcin.slusarz@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Matthew Wilcox <willy@...ux.intel.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] Rename DECLARE_MUTEX to DEFINE_SEMAPHORE

On Sun, 2008-10-26 at 15:11 +0100, Leon Woestenberg wrote:
> Hello,
> 
> On Sun, Oct 26, 2008 at 2:39 PM, Peter Zijlstra <peterz@...radead.org> wrote:
> > On Sun, 2008-10-26 at 13:06 +0100, Marcin Slusarz wrote:
> >> DECLARE_MUTEX is doubly misleading name (it actually _defines_ struct
> >> _semaphore_ initialized to 1) and it can be confused with DEFINE_MUTEX
> >> (which defines real struct mutex). Rename it.
> >
> > I'd prefer DEFINE_BINARY_SEM or somesuch
> >
> But it is not a binary semaphore, or is it?

> #define DECLARE_MUTEX(name) __DECLARE_SEMAPHORE_GENERIC(name,1)

I thought that 1 made it a binary sem.
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