[PATCH 00/10] fallocate: introduce FALLOC_FL_WRITE_ZEROES flag

[Christian Brauner]

On Mon, Jun 09, 2025 at 09:47:13PM -0400, Martin K. Petersen wrote:
> 
> Zhang,
> 
> > Changes since RFC v4:
> >  - Rebase codes on 6.16-rc1.
> >  - Add a new queue_limit flag, and change the write_zeroes_unmap sysfs
> >    interface to RW mode. User can disable the unmap write zeroes
> >    operation by writing '0' to it when the operation is slow.
> >  - Modify the documentation of write_zeroes_unmap sysfs interface as
> >    Martin suggested.
> >  - Remove the statx interface.
> >  - Make the bdev and ext4 don't allow to submit FALLOC_FL_WRITE_ZEROES
> >    if the block device does not enable the unmap write zeroes operation,
> >    it should return -EOPNOTSUPP.
> 
> This looks OK to me as long as the fs folks agree on the fallocate()
> semantics.

That looks overall fine. Should I queue this up in the vfs tree?