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Date: Mon, 9 Jan 2017 19:38:31 -0800 (PST)
From: Hugh Dickins <hughd@google.com>
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To: David Rientjes <rientjes@google.com>
cc: Vlastimil Babka <vbabka@suse.cz>,
        Mel Gorman <mgorman@techsingularity.net>,
        Andrew Morton <akpm@linux-foundation.org>,
        Michal Hocko <mhocko@kernel.org>, Jonathan Corbet <corbet@lwn.net>,
        "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
        linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [patch] mm, thp: add new background defrag option
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On Mon, 9 Jan 2017, David Rientjes wrote:
> On Mon, 9 Jan 2017, Vlastimil Babka wrote:
> 
> > > Any suggestions for a better name for "background" are more than welcome.  
> > 
> > Why not just "madvise+defer"?
> > 
> 
> Seeing no other activity regarding this issue (omg!), I'll wait a day or 
> so to see if there are any objections to "madvise+defer" or suggestions 
> that may be better and repost.

I get very confused by the /sys/kernel/mm/transparent_hugepage/defrag
versus enabled flags, and this may be a terrible, even more confusing,
idea: but I've been surprised and sad to see defrag with a "defer"
option, but poor enabled without one; and it has crossed my mind that
perhaps the peculiar "madvise+defer" syntax in defrag might rather be
handled by "madvise" in defrag with "defer" in enabled?  Or something
like that: 4 x 4 possibilities instead of 5 x 3.

Please be gentle with me,
Hugh