linux-kernel - Re: [RFC 3/3] hugetlbfs: accept subpool reserved option and setup accordingly

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Message-Id: <20150302151033.562db79cd3da844392461795@linux-foundation.org>
Date:	Mon, 2 Mar 2015 15:10:33 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Mike Kravetz <mike.kravetz@...cle.com>
Cc:	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	Nadia Yvette Chambers <nyc@...omorphy.com>,
	Davidlohr Bueso <davidlohr@...com>,
	Aneesh Kumar <aneesh.kumar@...ux.vnet.ibm.com>,
	Joonsoo Kim <iamjoonsoo.kim@....com>
Subject: Re: [RFC 3/3] hugetlbfs: accept subpool reserved option and setup
 accordingly

On Fri, 27 Feb 2015 14:58:13 -0800 Mike Kravetz <mike.kravetz@...cle.com> wrote:

> Make reserved be an option when mounting a hugetlbfs.

New mount option triggers a user documentation update.  hugetlbfs isn't
well documented, but Documentation/vm/hugetlbpage.txt looks like the
place.


> reserved
> option is only possible if size option is also specified.

The code doesn't appear to check for this (maybe it does).  Probably it
should do so, and warn when it fails.


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