btrfs: stop accessing ->csum_root directly

We are going to have multiple csum roots in the future, so convert all
users of ->csum_root to btrfs_csum_root() and rename ->csum_root to
->_csum_root so we can easily find remaining users in the future.

Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/fs/btrfs/disk-io.h b/fs/btrfs/disk-io.h
index e2824c6ada72..a4d1788acd24 100644
--- a/fs/btrfs/disk-io.h
+++ b/fs/btrfs/disk-io.h
@@ -109,6 +109,12 @@ static inline struct btrfs_root *btrfs_extent_root(struct btrfs_fs_info *fs_info
 	return fs_info->_extent_root;
 }
 
+static inline struct btrfs_root *btrfs_csum_root(struct btrfs_fs_info *fs_info,
+						 u64 bytenr)
+{
+	return fs_info->_csum_root;
+}
+
 static inline struct btrfs_root *btrfs_block_group_root(struct btrfs_fs_info *fs_info)
 {
 	return btrfs_extent_root(fs_info, 0);