linux-kernel - Re: [PATCH] Put braces around potentially empty 'if' body in handle_pte

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Date:	Sun, 18 Dec 2011 04:18:28 +0300
From:	Alexey Dobriyan <adobriyan@...il.com>
To:	Al Viro <viro@...IV.linux.org.uk>
Cc:	Eric Dumazet <eric.dumazet@...il.com>,
	Jesper Juhl <jj@...osbits.net>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Michel Lespinasse <walken@...gle.com>,
	Hugh Dickins <hughd@...gle.com>,
	Andrea Arcangeli <aarcange@...hat.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Subject: Re: [PATCH] Put braces around potentially empty 'if' body in
 handle_pte_fault()

On Sun, Dec 18, 2011 at 12:34:19AM +0000, Al Viro wrote:
> On Sun, Dec 18, 2011 at 01:18:55AM +0100, Eric Dumazet wrote:
> > Thats should be fixed in the reverse way :
> > 
> > #define flush_tlb_fix_spurious_fault(vma, address) do { } while (0)
> 
> There's a better way to do that -
> #define f(a) do { } while(0)
> does not work as a function returning void -
> 	f(1), g();
> won't work.  OTOH
> #define f(a) ((void)0)
> works just fine.

Two words: static inline.
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