linux-kernel - Re: [RFC][PATCH 05/13] percpu-rwsem: Optimize readers and reduce global impact

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Message-ID: <20150622230218.GB5582@redhat.com>
Date:	Tue, 23 Jun 2015 01:02:18 +0200
From:	Oleg Nesterov <oleg@...hat.com>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	paulmck@...ux.vnet.ibm.com, tj@...nel.org, mingo@...hat.com,
	linux-kernel@...r.kernel.org, der.herr@...r.at, dave@...olabs.net,
	riel@...hat.com, viro@...IV.linux.org.uk,
	torvalds@...ux-foundation.org
Subject: Re: [RFC][PATCH 05/13] percpu-rwsem: Optimize readers and reduce
	global impact

On 06/22, Peter Zijlstra wrote:
>
> +enum { readers_slow, readers_block };

I still think this enum doesn't make sense, and percpu_rw_semaphore->state
should be a boolean. But this is really minor and subjective.

Reviewed-by: Oleg Nesterov <oleg@...hat.com>

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