linux-kernel - Re: [PATCH] btrfs: fix __ucmpdi2 compile bug on 32 bit builds

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Date:	Fri, 27 Mar 2009 10:24:01 -0400
From:	Kyle McMartin <kyle@...artin.ca>
To:	Stephen Rothwell <sfr@...b.auug.org.au>
Cc:	Heiko Carstens <heiko.carstens@...ibm.com>,
	Chris Mason <chris.mason@...cle.com>,
	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org
Subject: Re: [PATCH] btrfs: fix __ucmpdi2 compile bug on 32 bit builds

On Sat, Mar 28, 2009 at 01:16:26AM +1100, Stephen Rothwell wrote:
> > -		switch (em->block_start) {
> > -		case EXTENT_MAP_LAST_BYTE:
> > +		if (em->block_start == EXTENT_MAP_LAST_BYTE) {
> 
> I might be a good idea to put a comment there about why this isn't a
> switch statement so that someone doesn't "clean up" this code in the
> future.
> 

nrrrgh. Remind me why we can't just add the libgcc helpers?

Unless we plan on growing some more of these, surely we can just reduce
it to a u32 for the switch...

regards, Kyle
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