Re: [PATCH 6.12] bcachefs: avoid truncating fiemap extent length

On Fri, Jul 03, 2026 at 10:05:22PM -0400, Sasha Levin wrote:
> On Thu, Jul 03, 2026 at 02:48:13PM +0300, Mikhail Dmitrichenko wrote:
> > No upstream commit exists for this patch.
> >
> > bkey sizes are stored in sectors as u32, while fiemap reports byte
> > lengths as u64. Shifting k.k->size before widening performs the
> > conversion in 32 bits, so an extent of 4 GiB or larger can wrap before
> > it is passed to fiemap_fill_next_extent().
> 
> Thanks for the patch, happy to take it if we can get an ack from the bcachefs
> maintainers.
> 
> -- 
> Thanks,
> Sasha

Ack