From: David Rientjes <rientjes@google.com>
To: Eric B Munson <emunson@akamai.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Jonathan Corbet <corbet@lwn.net>,
Davide Libenzi <davidel@xmailserver.org>,
Luiz Capitulino <lcapitulino@redhat.com>,
Shuah Khan <shuahkh@osg.samsung.com>,
Hugh Dickins <hughd@google.com>,
Andrea Arcangeli <aarcange@redhat.com>,
Joern Engel <joern@logfs.org>, Jianguo Wu <wujianguo@huawei.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
linux-api@vger.kernel.org, linux-doc@vger.kernel.org
Subject: Re: [patch 1/2] mm, doc: cleanup and clarify munmap behavior for hugetlb memory
Date: Fri, 27 Mar 2015 18:37:46 -0700 (PDT) [thread overview]
Message-ID: <alpine.DEB.2.10.1503271833360.5628@chino.kir.corp.google.com> (raw)
In-Reply-To: <20150327135847.GB10747@akamai.com>
On Fri, 27 Mar 2015, Eric B Munson wrote:
> > munmap(2) of hugetlb memory requires a length that is hugepage aligned,
> > otherwise it may fail. Add this to the documentation.
> >
> > This also cleans up the documentation and separates it into logical
> > units: one part refers to MAP_HUGETLB and another part refers to
> > requirements for shared memory segments.
> >
> > Signed-off-by: David Rientjes <rientjes@google.com>
> > ---
>
> If this is the route we are going to take, this behavoir needs to be
> called out prominently in the mmap/munmap man page.
>
Yeah, that was my next step, but before we get mtk involved I was trying
to get this merged since man2/mmap.2 already has a
.I Documentation/vm/hugetlbpage.txt for MAP_HUGETLB so the man page patch
can simply reference this addition to the file as justification.
next prev parent reply other threads:[~2015-03-28 1:37 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-26 23:23 [patch 1/2] mm, doc: cleanup and clarify munmap behavior for hugetlb memory David Rientjes
2015-03-26 23:23 ` [patch 2/2] mm, selftests: test return value of munmap for MAP_HUGETLB memory David Rientjes
2015-03-26 23:52 ` Michael Ellerman
2015-03-27 13:58 ` [patch 1/2] mm, doc: cleanup and clarify munmap behavior for hugetlb memory Eric B Munson
2015-03-28 1:37 ` David Rientjes [this message]
2015-03-30 1:35 ` Hugh Dickins
2015-03-30 14:23 ` Eric B Munson
2015-03-30 20:23 ` Hugh Dickins
2015-04-02 22:40 ` David Rientjes
2015-04-02 22:50 ` [patch -mm] mm, doc: cleanup and clarify munmap behavior for hugetlb memory fix David Rientjes
2015-04-03 1:05 ` Hugh Dickins
2015-04-04 9:34 ` Jonathan Corbet
2015-04-09 19:46 ` David Rientjes
2015-04-11 13:26 ` Jonathan Corbet
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