linux-kernel - Re: [PATCH 01/12] rwsem: make the waiter type an enumeration rather than a bitmask

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Message-ID: <5140F0B0.8060903@redhat.com>
Date:	Wed, 13 Mar 2013 17:33:36 -0400
From:	Rik van Riel <riel@...hat.com>
To:	Michel Lespinasse <walken@...gle.com>
CC:	Alex Shi <alex.shi@...el.com>, Ingo Molnar <mingo@...nel.org>,
	David Howells <dhowells@...hat.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Thomas Gleixner <tglx@...utronix.de>,
	Yuanhan Liu <yuanhan.liu@...ux.intel.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 01/12] rwsem: make the waiter type an enumeration rather
 than a bitmask

On 03/06/2013 06:21 PM, Michel Lespinasse wrote:
> We are not planning to add some new waiter flags, so we can convert the
> waiter type into an enumeration.
>
> Background: David Howells suggested I do this back when I tried adding
> a new waiter type for unfair readers. However, I believe the cleanup
> applies regardless of that use case.

Given the discussion on patch 10/12 and 11/12, could we benefit
from the fair vs. unfair distinction?

> Signed-off-by: Michel Lespinasse <walken@...gle.com>


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