* Re: [PATCH 1/4 linux-next] xfs: use swap() in xfs_dir2_leafn_rebalance()
[not found] ` <1618479490.17551.1431972373169.open-xchange@webmail.nmp.proximus.be>
@ 2015-05-18 21:37 ` Dave Chinner
0 siblings, 0 replies; 2+ messages in thread
From: Dave Chinner @ 2015-05-18 21:37 UTC (permalink / raw)
To: Fabian Frederick; +Cc: xfs, Al Viro, linux-kernel
On Mon, May 18, 2015 at 08:06:13PM +0200, Fabian Frederick wrote:
>
>
> > On 18 May 2015 at 19:19 Al Viro <viro@ZenIV.linux.org.uk> wrote:
> >
> >
> > On Mon, May 18, 2015 at 07:13:48PM +0200, Fabian Frederick wrote:
> > > * If the block order is wrong, swap the arguments.
> > > */
> > > - if ((swap = xfs_dir2_leafn_order(dp, blk1->bp, blk2->bp))) {
> > > - xfs_da_state_blk_t *tmp; /* temp for block swap */
> > > + swap = xfs_dir2_leafn_order(dp, blk1->bp, blk2->bp);
> > > + if (swap)
> > > + swap(blk1, blk2);
> >
> > Egads... Have you even read what you'd written? Yes, sure, preprocessor
> > will do the right thing, but it's a very noticable annoyance for somebody
> > reading that. Rename the bleeding flag, please.
>
> I wanted to focus on the swap() update in this small patchset (some other things
> should be done in there like have xfs_dir2_leafn_order() return bool) but I can
> rename it in something like need_swap. Do I need to resend the 4 patches Dave ?
4 patches is 3 patches too many for noise like this. Anyway, two of
the patches have the same local "swap" variable problem; the context
is "swap order" not "need swap".
FWIW, I am not a fan of changing the code for no actual gain - the
compiled code is identical, there are no stack savings, and now I
have to look at an extra file to work out what the code does. If
you're changing the code and this is prep work for a large series,
then by all means clean the code up. But otherwise, changes like
this just mean work that other developers have in progress need
rebasing....
Cheers,
Dave.
--
Dave Chinner
david@fromorbit.com
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