Re: [PATCH v3 2/2] exfat: EXFAT_IOC_GET_VALID_DATA ioctl

[Namjae Jeon]

On Tue, Mar 17, 2026 at 7:37 AM David Timber <dxdt@xxxxxxxxxxxx> wrote:
>
> On 3/13/26 22:59, Namjae Jeon wrote:
> > I'm working on adding iomap support to exFAT, and I think SEEK_HOLE
> > will be able to address the requirements we discussed. I will bring
> > this up again once the iomap work is complete.
> Good! exFAT not constructed using iomap leading to an eventual
> catastrophic tech debt has been one of my concerns. Since you're working
> on it, you'd naturally implement FIEMAP as well, right? I was cooking up
> a quick and dirty functions for FIEMAP... Not sure if you're interested
> in them, but would happy to submit in the future. It's only a
> kernel-specific interface almost no userspace uses, but really
> insightful tool in analyzing fragmentation issue I'm trying to solve.
> Might come in handy in the meantime the new iomap implementation is
> settling down.
Since SEEK_HOLE will be supported as part of the upcoming iomap work,
your patch below can be dropped and I won't apply it. And I would be
very grateful if you could submit your FIEMAP patch after iomap
support lands.
Thanks!