linux-kernel - Re: [RFC][PATCH]: x86: clarify/fix no-op barriers for text_poke

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Date:   Tue, 1 Aug 2017 11:12:46 +0200 (CEST)
From:   Jiri Kosina <jikos@...nel.org>
To:     Peter Zijlstra <peterz@...radead.org>
cc:     rostedt@...dmis.org, masami.hiramatsu.pt@...achi.com,
        hpa@...ux.intel.com, linux-kernel@...r.kernel.org, x86@...nel.org
Subject: Re: [RFC][PATCH]: x86: clarify/fix no-op barriers for
 text_poke_bp()

On Mon, 31 Jul 2017, Peter Zijlstra wrote:

> So I was looking at text_poke_bp() today and I couldn't make sense of
> the barriers there.
> 
> How's for something like so?

Hm, agreed, the barrier after unsetting in_progress is superfluous, and 
the comments are definitely more understandable this way; I probably 
didn't have one of my best days when writing those back then.

	Acked-by: Jiri Kosina <jkosina@...e.cz>

Thanks,

-- 
Jiri Kosina
SUSE Labs