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Date: Thu, 20 Mar 2003 15:20:45 -0800
From: William Lee Irwin III <wli@holomorphy.com>
To: Hugh Dickins <hugh@veritas.com>
Cc: Andrew Morton <akpm@digeo.com>, linux-kernel@vger.kernel.org,
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Subject: Re: [PATCH] anobjrmap 3/6 unchained
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On Thu, Mar 20, 2003 at 11:15:06PM +0000, Hugh Dickins wrote:
> Removed nr_reverse_maps, ReverseMaps: easily reverted if that
> poses a vmstat or meminfo compatibility problem, or someone is
> still interested in that number; but objrmap wasn't maintaining
> it, and if they don't occupy space, is it worth showing?
> Besides, look at page_dup_rmap for copy_page_range: I don't
> want to clutter that with inc_page_state(nr_reverse_maps).

It was mostly to determine space savings and internal fragmentation
on the pte_chain objects. It also helps get some notion of internal
fragmentation on pagetables. It's of low importance; delete at will.


-- wli
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