btrfs: stop accessing ->free_space_root directly

We're going to have multiple free space roots in the future, so adjust
all the users of the free space root to use a helper to access the root.

Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Josef Bacik 2021-11-05 16:45:49 -04:00 • committed by David Sterba
commit 7939dd9f35
4 changed files with 26 additions and 20 deletions