linux-kernel - Re: [RFC PATCH man-pages] Add membarrier system call man page

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Date:	Fri, 18 Dec 2015 10:40:35 -0800
From:	Davidlohr Bueso <dave@...olabs.net>
To:	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
Cc:	Michael Kerrisk <mtk.manpages@...il.com>,
	linux-kernel@...r.kernel.org,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Josh Triplett <josh@...htriplett.org>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Nicholas Miell <nmiell@...cast.net>,
	Ingo Molnar <mingo@...hat.com>,
	Alan Cox <gnomes@...rguk.ukuu.org.uk>,
	Lai Jiangshan <laijs@...fujitsu.com>,
	Stephen Hemminger <stephen@...workplumber.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Peter Zijlstra <peterz@...radead.org>,
	David Howells <dhowells@...hat.com>,
	Pranith Kumar <bobby.prani@...il.com>,
	Shuah Khan <shuahkh@....samsung.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-api@...r.kernel.org
Subject: Re: [RFC PATCH man-pages] Add membarrier system call man page

On Sun, 13 Dec 2015, Mathieu Desnoyers wrote:
>+.SH RETURN VALUE
>+On success, this system call returns zero.  On error, \-1 is returned,
>+and

For the zero return, would it make sense to specify that it is also the case
for MEMBARRIER_CMD_SHARED under UP? Its pretty obvious it should be a no-op,
but wouldn't hurt to make it explicit.

Thanks,
Davidlohr
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