linux-kernel - Re: [PATCH] Terminate hugetlbfs mount argument list

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Message-ID: <ada7ig8lu5z.fsf@cisco.com>
Date:	Tue, 11 Mar 2008 16:26:00 -0700
From:	Roland Dreier <rdreier@...co.com>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	akpm@...l.org, wli@...omorphy.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Terminate hugetlbfs mount argument list

 > Hmm indeed I did. To my defense it's a weird unusual coding pattern
 > that tricked me.  What good is it to give terminator elements own enum values?

It's a little odd.  But I guess it does let you do

	token = match_token(...table...);
	switch (token) {
	case ERR_VALUE:...

and get ERR_VALUE back for anything that doesn't match one of the real
token patterns.

 - R.
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