dm vdo uds-threads: push 'barrier' down to sparse-cache

The sparse-cache is the only user of the 'barrier' data structure,
so just move it private to it.

Signed-off-by: Mike Snitzer <snitzer@kernel.org>
Signed-off-by: Matthew Sakai <msakai@redhat.com>
This commit is contained in:
Mike Snitzer 2024-02-09 11:09:14 -06:00
commit 0593855a83
3 changed files with 68 additions and 72 deletions