1. 00eb4ba locking/rwsem: Use acquire/release semantics by Davidlohr Bueso · 9 years ago
  2. e172800 asm-generic: rwsem: de-PPCify rwsem.h by Will Deacon · 11 years ago
  3. dd472da Hexagon: Add locking types and functions by Richard Kuo · 13 years ago