prefree_map 1938 fs/f2fs/segment.c unsigned long *prefree_map = dirty_i->dirty_segmap[PRE]; prefree_map 1951 fs/f2fs/segment.c start = find_next_bit(prefree_map, MAIN_SEGS(sbi), end + 1); prefree_map 1954 fs/f2fs/segment.c end = find_next_zero_bit(prefree_map, MAIN_SEGS(sbi), prefree_map 1963 fs/f2fs/segment.c if (test_and_clear_bit(i, prefree_map))