1. 8ebe347 percpu_rw_semaphore: add lockdep annotations by Oleg Nesterov · 12 years ago
  2. 9390ef0 percpu_rw_semaphore: kill ->writer_mutex, add ->write_ctr by Oleg Nesterov · 12 years ago
  3. a1fd3e2 percpu_rw_semaphore: reimplement to not block the readers unnecessarily by Oleg Nesterov · 12 years ago