Btrfs: create a logical->phsyical block number mapping scheme

Signed-off-by: Chris Mason <chris.mason@oracle.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index e15a072407bf..3a15943ea8ed 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -119,10 +119,10 @@ int btrfs_commit_tree_roots(struct btrfs_trans_handle *trans,
 
         while(1) {
                 old_extent_block = btrfs_root_blocknr(&extent_root->root_item);
-                if (old_extent_block == extent_root->node->b_blocknr)
+                if (old_extent_block == bh_blocknr(extent_root->node))
                         break;
                 btrfs_set_root_blocknr(&extent_root->root_item,
-                                       extent_root->node->b_blocknr);
+                                       bh_blocknr(extent_root->node));
                 ret = btrfs_update_root(trans, tree_root,
                                         &extent_root->root_key,
                                         &extent_root->root_item);
@@ -176,7 +176,7 @@ int add_dirty_roots(struct btrfs_trans_handle *trans,
                                      (unsigned long)root->root_key.objectid,
                                      BTRFS_ROOT_TRANS_TAG);
                         if (root->commit_root == root->node) {
-                                WARN_ON(root->node->b_blocknr !=
+                                WARN_ON(bh_blocknr(root->node) !=
                                         btrfs_root_blocknr(&root->root_item));
                                 brelse(root->commit_root);
                                 root->commit_root = NULL;
@@ -191,7 +191,7 @@ int add_dirty_roots(struct btrfs_trans_handle *trans,
                         dirty->root = root;
                         root->root_key.offset = root->fs_info->generation;
                         btrfs_set_root_blocknr(&root->root_item,
-                                               root->node->b_blocknr);
+                                               bh_blocknr(root->node));
                         err = btrfs_insert_root(trans, root->fs_info->tree_root,
                                                 &root->root_key,
                                                 &root->root_item);