2.2.21 (4 files, 9 dirs)
 COPYING (2 lines)
 MAINTAINERS (-1 line)
 Makefile (+3 lines)
 Rules.make (+11 lines)
 Documentation (2 files, 2 dirs)
 arch (4 dirs)
 drivers (1 file, 11 dirs)
 fs (1 file, 6 dirs)
 include (5 dirs)
 ipc (1 file)
 mm (3 files)
 page_alloc.c (+1 line)
 vmalloc.c (1 line)
 vmscan.c (+5 lines)
 net (3 dirs)
 scripts (1 file, 1 dir)