tree 0bda40993e1794363bf6570614584b03f1de55e9
parent 42b88e6ad4014d290d6b59dfeb5d6949c5a3f346
author john stultz <johnstul@us.ibm.com> 1187816470 -0700
committer Linus Torvalds <torvalds@woody.linux-foundation.org> 1187837564 -0700

futex_unlock_pi() hurts my brain and may cause application deadlock

Avoid futex_unlock_pi returning -EFAULT (which results in deadlock), by
clearing uval before jumping to retry_locked.

Signed-off-by: John Stultz <johnstul@us.ibm.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>