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Date: Thu, 6 Jul 2017 09:42:34 +0200
From: Peter Zijlstra <peterz@...radead.org>
To: Ingo Molnar <mingo@...nel.org>
Cc: Niklas Cassel <niklas.cassel@...s.com>, stable@...r.kernel.org,
torvalds@...ux-foundation.org, tglx@...utronix.de,
ktkhai@...tuozzo.com, hpa@...or.com, linux-kernel@...r.kernel.org,
linux-tip-commits@...r.kernel.org
Subject: Re: [tip:locking/urgent] locking/rwsem-spinlock: Fix EINTR branch in
__down_write_common()
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.
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