1. 1d1764c headers: kref.h redux by Alexey Dobriyan · 15 years ago
  2. 735643e Remove "#ifdef __KERNEL__" checks from unexported headers by Robert P. J. Day · 17 years ago
  3. 41ca28a kref: add kref_set() by Evgeniy Polyakov · 17 years ago
  4. 1da177e Linux-2.6.12-rc2 by Linus Torvalds · 20 years ago