file_offset_struct
RB_ENTRY(file_offset_struct) next;
offset_cmp(struct file_offset_struct *f1, struct file_offset_struct *f2)
RB_HEAD(file_offset_head, file_offset_struct);
RB_GENERATE_STATIC(file_offset_head, file_offset_struct, next, offset_cmp);
struct file_offset_struct *offset, *offset_tmp;
struct file_offset_struct *offset, *offset_nxt, *offset_prv;
struct file_offset_struct *offset, *offset_tmp;
struct file_offset_struct *offset;