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

[Chris Mason]

On Fri, 2009-03-27 at 10:24 -0400, Kyle McMartin wrote:
> 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...

EXTENT_MAP_LAST_BYTE is something like (u64)-5

This if/else setup is fine, I'll take the patch.

-chris


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