linux-kernel - Re: [PATCH RESEND] vgacon: remember scrollback buffer on console switch

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Message-Id: <20081025161456.643b36c6.akpm@linux-foundation.org>
Date:	Sat, 25 Oct 2008 16:14:56 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Marcin Slusarz <marcin.slusarz@...il.com>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Antonino Daplas <adaplas@...il.com>,
	Krzysztof Helt <krzysztof.h1@...pl>,
	linux-fbdev-devel@...ts.sourceforge.net
Subject: Re: [PATCH RESEND] vgacon: remember scrollback buffer on console
 switch

On Sun, 26 Oct 2008 00:43:01 +0200 Marcin Slusarz <marcin.slusarz@...il.com> wrote:

> PS: why DECLARE_MUTEX _defines_ _semaphore_?

The kernel gets definition-vs-declaration confused in several places.

> there are only 8 uses of this
> macro so it's not a big problem to rename it to e.g. DEFINE_SEMAPHORE (I can
> provide a patch)

I'd say that s/declare/define/ at such a late stage in the semaphore's
lifetime would be of dubious value.  But getting "MUTEX" out of that
macro's name would be a very good thing - it's a bad overlap with struct
mutex.  Send patch :)


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