hammer_inode_data
if (elm->leaf.data_len != sizeof(struct hammer_inode_data))
struct hammer_inode_data ino_data; /* in-memory cache */
struct hammer_inode_data sync_ino_data; /* to-sync cache */
const int in_size = sizeof(struct hammer_inode_data) +
if (leaf->data_len != sizeof(struct hammer_inode_data))
KKASSERT(leaf->data_len == sizeof(struct hammer_inode_data));
struct hammer_inode_data inode;
offsetof(struct hammer_inode_data, mtime)