* Fix lockdep's detection of "USED" <- "IN-NMI" inversions, from Peter

  Zijlstra.

* Make percpu-rwsem operations on the semaphore's ->read_count IRQ-safe
  because it can be used in an IRQ context, from Hou Tao.
-----BEGIN PGP SIGNATURE-----
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=70QQ
-----END PGP SIGNATURE-----