btrfs: Factor out pinned extent clean up in btrfs_delete_unused_bgs

Next patch is going to refactor how pinned extents are tracked which
will necessitate changing this code. To ease that work and contain the
changes factor the code now in preparation, this will also help review.

Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Nikolay Borisov 2020-01-20 16:09:17 +02:00 • committed by David Sterba
commit 45bb5d6ae9