From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 44A1638DDF; Tue, 30 Jan 2024 16:33:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706632402; cv=none; b=A/AhCHqTgv1XFs50GV9Bxmq6waOWEggEbbAVEZNHRhOEydLTBlyijAdaUMG6IUdIRpDcZJjMmAzyIV+mLMfl0WbbfFKS7Y6hxL4bo5o4AKexLSTQSGm1evxv37wYWLo85kDGagMr/jJKWYhaloUnh3IiI512CXeWk5VuMUFgVW0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706632402; c=relaxed/simple; bh=7lcXGcjnNomt+i2x6M1dhs33eS+R8FWYGL8TkfLV164=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=f60AhquwWo7KUhYLjPFMh5XTZnEL6gVeJgYeMOjjnMfoebo7qXeLPFMRyNWrYkzwj0b8AkKuKwo0wq4IQi/o0ZHgJ+xT2Iv+mts5gCQoMmoWEsOJhh7a29Fc5e3fb67Aj322S0cuXdNciLx8cJZ5KI6uc6Ty3u/z9OENpAuCxF4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=K95DzjwF; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="K95DzjwF" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B22BFC433F1; Tue, 30 Jan 2024 16:33:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1706632401; bh=7lcXGcjnNomt+i2x6M1dhs33eS+R8FWYGL8TkfLV164=; h=Date:From:To:Cc:Subject:Reply-To:References:In-Reply-To:From; b=K95DzjwFeGX+F/y1ok9451Ib5LX5ZEJ4E0D+ZjuWleALpCIE99fi41NAKHj9en2NJ U5FmJ4e7R9SPvgRO9UpMYC0FnSlPxSYr5QNk8tao0YmswsccE/Vl+rHAK0X4AM7+zv w+WWKlwsAQ9kQ4bZmzCCmWpJwlYiZ5bxnArZsciBJPudRelHCtZXEfb+owvFN3mOO5 Wnp6/fiKK0egb1O1NW0nmzC1CY2OPog7wPVXXfN/3N1Shgcv2aquiT72aMGNDVBh7U mnEXz8gU1Xvu213BsRH5Cvcicvwj6r3FElH/WtLuqCP+4bNSM1XmDmTtnMujAmDP4n +PAfg5gfC7gkA== Received: by paulmck-ThinkPad-P17-Gen-1.home (Postfix, from userid 1000) id 3E4A2CE14F0; Tue, 30 Jan 2024 08:33:21 -0800 (PST) Date: Tue, 30 Jan 2024 08:33:21 -0800 From: "Paul E. McKenney" To: Andrea Parri Cc: linux-kernel@vger.kernel.org, "E."@paulmck-thinkpad-p17-gen-1, Alan Stern , Will Deacon , Peter Zijlstra , Boqun Feng , Nicholas Piggin , David Howells , Jade Alglave , Luc Maranget , Paul@paulmck-thinkpad-p17-gen-1, Akira Yokosawa , Daniel Lustig , Joel Fernandes , Mark Rutland , Jonathan Corbet , linux-arch@vger.kernel.org, linux-doc@vger.kernel.org, Anna-Maria Behnsen Subject: Re: [PATCH doc] Emphasize that failed atomic operations give no ordering Message-ID: Reply-To: paulmck@kernel.org References: <63d9d6f6-05e8-473d-9d09-ce8d3a33ca39@paulmck-laptop> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Tue, Jan 30, 2024 at 05:02:49PM +0100, Andrea Parri wrote: > On Tue, Jan 30, 2024 at 06:53:38AM -0800, Paul E. McKenney wrote: > > The ORDERING section of Documentation/atomic_t.txt can easily be read as > > saying that conditional atomic RMW operations that fail are ordered when > > those operations have the _acquire() or _release() prefixes. This is > > s/prefixes/suffixes Good catch, fixed. > > not the case, therefore update this section to make it clear that failed > > conditional atomic RMW operations provide no ordering. > > > > Reported-by: Anna-Maria Behnsen > > Signed-off-by: Paul E. McKenney > > You may want to add a "subsystem" to the subject line, git-log suggests > "Documentation/atomic_t". Anyway, Good point, done. > Acked-by: Andrea Parri Thank you! Thanx, Paul