reflink support and Samba running over XFS

Christoph Hellwig hch at
Tue Nov 8 06:47:48 UTC 2022

On Mon, Nov 07, 2022 at 04:53:42PM -0800, Jeremy Allison via samba-technical wrote:
> ret = ioctl(fsp_get_io_fd(dest_fsp), BTRFS_IOC_CLONE_RANGE, &cr_args);
> what ioctls are used for this in XFS ?
> We'd need a VFS module that implements them for XFS.

That ioctl is now implemented in the Linux VFS and supported by btrfs,
ocfs2, xfs, nfs (v4.2), cifs and overlayfs.

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