From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Michael Kerrisk (man-pages)" Subject: Re: [PATCH man-pages 1/5] ioctl_userfaultfd.2: update description of shared memory areas Date: Mon, 1 May 2017 20:33:31 +0200 Message-ID: <7ec5dfc0-9d84-e142-bfaa-d96383acbee9@gmail.com> References: <1493617399-20897-1-git-send-email-rppt@linux.vnet.ibm.com> <1493617399-20897-2-git-send-email-rppt@linux.vnet.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1493617399-20897-2-git-send-email-rppt@linux.vnet.ibm.com> Sender: owner-linux-mm@kvack.org To: Mike Rapoport Cc: mtk.manpages@gmail.com, Andrea Arcangeli , linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-man@vger.kernel.org List-Id: linux-man@vger.kernel.org Hello Mike, I've applied this patch, but have a question. On 05/01/2017 07:43 AM, Mike Rapoport wrote: > Signed-off-by: Mike Rapoport > --- > man2/ioctl_userfaultfd.2 | 13 +++++++++++-- > 1 file changed, 11 insertions(+), 2 deletions(-) > > diff --git a/man2/ioctl_userfaultfd.2 b/man2/ioctl_userfaultfd.2 > index 889feb9..6edd396 100644 > --- a/man2/ioctl_userfaultfd.2 > +++ b/man2/ioctl_userfaultfd.2 > @@ -181,8 +181,17 @@ virtual memory areas > .TP > .B UFFD_FEATURE_MISSING_SHMEM > If this feature bit is set, > -the kernel supports registering userfaultfd ranges on tmpfs > -virtual memory areas > +the kernel supports registering userfaultfd ranges on shared memory areas. > +This includes all kernel shared memory APIs: > +System V shared memory, > +tmpfs, > +/dev/zero, > +.BR mmap(2) > +with > +.I MAP_SHARED > +flag set, > +.BR memfd_create (2), > +etc. > > The returned > .I ioctls Does the change in this patch represent a change that occurred in Linux 4.11? If so, I think this needs to be said explicitly in the text. Cheers, Michael -- Michael Kerrisk Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ Linux/UNIX System Programming Training: http://man7.org/training/ -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org