1. d472d9d lockref: Relax in cmpxchg loop by Luck, Tony · 11 years ago
  2. bc08b44 lockref: implement lockless reference count updates using cmpxchg() by Linus Torvalds · 11 years ago
  3. 2f4f12e lockref: uninline lockref helper functions by Linus Torvalds · 11 years ago