Re: [tip:locking/urgent] locking/rwsem-spinlock: Fix EINTR branch in __down_write_common()

From: Peter Zijlstra
Date: Thu Jul 06 2017 - 03:42:45 EST

On Thu, Jul 06, 2017 at 09:28:58AM +0200, Ingo Molnar wrote:
> It's more straightforward to just do the canonical sem->count >= 0 test that we do
> elsewhere in the rwsem-spinlock code.
> PeterZ, what's your preference?

Leave it as is.. it doesn't matter (the 0 case shouldn't happen) and as
you say >= 0 is what most other code does.