OCFS2_32BIT_POS_MASK
return le64_to_cpu(rec->r_cpos) & OCFS2_32BIT_POS_MASK;
low_cpos = cpos & OCFS2_32BIT_POS_MASK;
new_cpos = le64_to_cpu(rec->r_cpos) & OCFS2_32BIT_POS_MASK;