On Wed, Jul 17, 2019 at 04:18:16PM +0300, Nikolay Borisov wrote:
> It was added in ba8b04c1d4ad ("btrfs: extend btrfs_set_extent_delalloc
> and its friends to support in-band dedupe and subpage size patchset") as
> a preparatory patch for in-band and subapge block size patchsets.
> However neither of those are likely to be merged anytime soon and the
> code has diverged significantly from the last public post of either
> of those patchsets.
Yeah, keeping the parameter in place for the patchsets has become
indefensible.
