Re: [PATCH V6 0/10] Fixes to the previously-merged drivers/dax/fsdev series

On Mon, Jun 15, 2026 at 04:05:39PM +0000, John Groves wrote:
> From: John Groves <[email protected]>
> 
> This series applies bug fixes (mostly found via sashiko) to the dax/fsdev
> series. It has been soaking in the famfs CI pipeline and 1) won't affect
> anything that doesn't use drivers/dax/fsdev.c, and 2) doesn't affect any
> known workloads -- although the bugs would have manifested when multi-range
> DCD dax devices are a thing (soon-ish).
> 
> Most of the series is confined to drivers/dax/fsdev.c. Two patches touch
> shared DAX core in drivers/dax/super.c: patch 8 reads holder_ops once in
> dax_holder_notify_failure() to close a double-fetch NULL dereference, and
> patch 9 reorders fs_put_dax() and adds a WARN_ON(). fs_put_dax() is used by
> ext2/ext4/erofs/xfs, but only holder-passing callers (like XFS in-tree) will
> see a behavior change, and only a new warning if they misuse it.

Series applied to libnvdimm-for-next:
https://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm.git/