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, linux-mm@kvack.org
Subject: Re: [PATCH] anobjrmap 3/6 unchained
Date: Thu, 20 Mar 2003 15:20:45 -0800 [thread overview]
Message-ID: <20030320232045.GC1240@holomorphy.com> (raw)
In-Reply-To: <Pine.LNX.4.44.0303202314190.2743-100000@localhost.localdomain>
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
WARNING: multiple messages have this Message-ID (diff)
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, linux-mm@kvack.org
Subject: Re: [PATCH] anobjrmap 3/6 unchained
Date: Thu, 20 Mar 2003 15:20:45 -0800 [thread overview]
Message-ID: <20030320232045.GC1240@holomorphy.com> (raw)
In-Reply-To: <Pine.LNX.4.44.0303202314190.2743-100000@localhost.localdomain>
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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next prev parent reply other threads:[~2003-03-20 23:12 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-03-20 23:12 [PATCH] anobjrmap 1/6 rmap.h Hugh Dickins
2003-03-20 23:12 ` Hugh Dickins
2003-03-20 23:14 ` [PATCH] anobjrmap 2/6 mapping Hugh Dickins
2003-03-20 23:14 ` Hugh Dickins
2003-03-21 6:48 ` Andrew Morton
2003-03-21 6:48 ` Andrew Morton
2003-03-24 19:38 ` Stephen C. Tweedie
2003-03-24 19:38 ` Stephen C. Tweedie
2003-03-24 22:12 ` Andrew Morton
2003-03-24 22:12 ` Andrew Morton
2003-03-20 23:15 ` [PATCH] anobjrmap 3/6 unchained Hugh Dickins
2003-03-20 23:15 ` Hugh Dickins
2003-03-20 23:20 ` William Lee Irwin III [this message]
2003-03-20 23:20 ` William Lee Irwin III
2003-03-20 23:15 ` [PATCH] anobjrmap 4/6 anonmm Hugh Dickins
2003-03-20 23:15 ` Hugh Dickins
2003-03-20 23:16 ` [PATCH] anobjrmap 5/6 rechained Hugh Dickins
2003-03-20 23:16 ` Hugh Dickins
2003-03-20 23:17 ` [PATCH] anobjrmap 6/6 arches Hugh Dickins
2003-03-20 23:17 ` Hugh Dickins
2003-03-21 6:48 ` [PATCH] anobjrmap 1/6 rmap.h Andrew Morton
2003-03-21 6:48 ` Andrew Morton
2003-03-21 7:07 ` William Lee Irwin III
2003-03-21 7:07 ` William Lee Irwin III
2003-03-21 7:15 ` William Lee Irwin III
2003-03-21 7:15 ` William Lee Irwin III
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