tree 37cc4c6793e2b616791d42ee840e5a007a13eccb
parent 9132983ae140a8ca81e95e081d5a4c0dd7a7f670
author David S. Miller <davem@sunset.davemloft.net> 1141703990 -0800
committer David S. Miller <davem@sunset.davemloft.net> 1142846060 -0800

[SPARC64]: Bulletproof MMU context locking.

1) Always spin_lock_init() in init_context().  The caller essentially
   clears it out, or copies the mm info from the parent.  In both
   cases we need to explicitly initialize the spinlock.

2) Always do explicit IRQ disabling while taking mm->context.lock
   and ctx_alloc_lock.

Signed-off-by: David S. Miller <davem@davemloft.net>