[LTP] [PATCH v1 1/1] swap: Add exfat to filesystems requiring tst_fill_file

[Jan Polensky]

On Thu, Jul 02, 2026 at 10:10:09AM +0000, Andrea Cervesato wrote:
> Hi Jan,
>
> I seen you implemented in v7.2-rc1:
>
> commit 03a43677ca91e3997355a13b1da6e47329b025e1
> Author: Jan Polensky <japo@linux.ibm.com>
> Date:   Tue Jun 9 18:21:49 2026 +0900
>
>     exfat: add swap_activate support
>
>     Commit 07d67f3e9083 ("exfat: add iomap buffered I/O support")
>     converted exfat buffered I/O to iomap, but did not add a
>     .swap_activate handler to the address_space_operations.
>
>     swapon(2) on an exfat swapfile then fails with EINVAL, which causes
>     LTP swap tests to fail.
>
>     Add exfat_iomap_swap_activate() and hook it into exfat_aops so exfat
>     uses iomap_swapfile_activate() for swapfile activation.
>
>     Fixes: 614f71ca1bdf ("exfat: add iomap buffered I/O support")
>     Closes: https://lore.kernel.org/all/20260603110212.3020276-1-japo@linux.ibm.com/
>     Signed-off-by: Jan Polensky <japo@linux.ibm.com>
>     Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
>
> what should we do with your patch in LTP?
>
> Regards,
> --
> Andrea Cervesato
> SUSE QE Automation Engineer Linux
> andrea.cervesato@suse.com

Hi Andrea,

Thanks for following up on this.

On my side (s390x, Fedora 44, kernel v7.2-rc1), I still need both
patches for the LTP swap tests to pass:
 1. The kernel fix (03a43677ca91 "exfat: add swap_activate support")
 2. This LTP patch (adding exfat to tst_fill_file)

Without the LTP patch, the tests still fail even with the kernel fix
applied.

Could you validate on your setup whether the kernel fix alone is
sufficient, or if you also need this LTP patch? It would be good to
understand if this is architecture-specific or a general requirement.

If you can confirm the tests pass with only the kernel fix, we can
close this LTP patch. Otherwise, one should merge it.

Best regards,
Jan