1. 4db2ce0 [LIB]: Consolidate _atomic_dec_and_lock() by David S. Miller · 19 years ago
  2. fb1c8f9 [PATCH] spinlock consolidation by Ingo Molnar · 19 years ago
  3. 1da177e Linux-2.6.12-rc2 by Linus Torvalds · 20 years ago v2.6.12-rc2