ci_tail           408 mm/swapfile.c  		struct swap_cluster_info *ci_tail;
ci_tail           415 mm/swapfile.c  		ci_tail = ci + tail;
ci_tail           416 mm/swapfile.c  		spin_lock_nested(&ci_tail->lock, SINGLE_DEPTH_NESTING);
ci_tail           417 mm/swapfile.c  		cluster_set_next(ci_tail, idx);
ci_tail           418 mm/swapfile.c  		spin_unlock(&ci_tail->lock);