btrfs: export the block group caching helpers

This will make it so we can move them easily.

Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
[ coding style updates ]
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Josef Bacik 2019-06-20 15:37:48 -04:00 • committed by David Sterba
commit 676f1f759f
2 changed files with 39 additions and 35 deletions