Re: [PATCH v2] xfs: zero newly allocated btree root space

[Christoph Hellwig]

On Wed, Jul 01, 2026 at 08:52:34AM -0700, Darrick J. Wong wrote:
> > This almost sounds like we should explicitly zero this case just for that
> > particular case.  Although Darrick was kinda heading in a different
> > direction and I don't want to start a fight here.
> 
> I'm fine with either solution; I simply prefer the one that fixes all
> the current and future "oops we forgot to zero a hidden padding" bugs in
> one action.

Maybe we should avoid creating hidden zero padding to start with? :)
But this is a small allocation, and most of it gets overwritten
while the cache is still hot, so I can live with the unconditional
zeroing.  Still feels a bit odd to reach for the big hammer.