From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Michael Kerrisk (man-pages)" Subject: Re: [PATCH] futex.2: clarify address mapping Date: Sat, 11 Apr 2015 08:56:05 +0200 Message-ID: <5528C585.5030805@gmail.com> References: <1427654293-19851-1-git-send-email-xypron.glpk@gmx.de> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1427654293-19851-1-git-send-email-xypron.glpk-Mmb7MZpHnFY@public.gmane.org> Sender: linux-man-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Heinrich Schuchardt Cc: mtk.manpages-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, linux-man-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-man@vger.kernel.org On 03/29/2015 08:38 PM, Heinrich Schuchardt wrote: > Using the word "physical" address should make the text easier to > make. > > Avoid negations like "may not be equal". Thanks, Heinrich. Applied. Cheers, Michael > Signed-off-by: Heinrich Schuchardt > --- > man2/futex.2 | 10 ++++------ > 1 file changed, 4 insertions(+), 6 deletions(-) > > diff --git a/man2/futex.2 b/man2/futex.2 > index b4a52b1..0644fc6 100644 > --- a/man2/futex.2 > +++ b/man2/futex.2 > @@ -54,12 +54,10 @@ The condition is represented by the futex word, which is an address > in memory supplied to the > .BR futex () > system call, and the value at this memory location. > -(While the virtual addresses for the same memory in separate > -processes may not be equal, > -the kernel maps them internally so that the same memory mapped > -in different locations will correspond for > -.BR futex () > -calls.) > +(While the virtual addresses for the same physical memory address > +in separate processes may be different, > +the same physical address may be shared by the processes using > +.BR mmap (2).) > > When executing a futex operation that requests to block a thread, > the kernel will only block if the futex word has the value that the > -- Michael Kerrisk Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ Linux/UNIX System Programming Training: http://man7.org/training/ -- To unsubscribe from this list: send the line "unsubscribe linux-man" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html