From: "Stone Wang" <pwstone@gmail.com>
To: Christoph Lameter <clameter@sgi.com>
Cc: akpm@osdl.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [PATCH][0/8] (Targeting 2.6.17) Posix memory locking and balanced mlock-LRU semantic
Date: Tue, 21 Mar 2006 00:23:06 -0500 [thread overview]
Message-ID: <bc56f2f0603202123o1f43132u@mail.gmail.com> (raw)
In-Reply-To: <Pine.LNX.4.64.0603200923560.24138@schroedinger.engr.sgi.com>
I will check and fix it.
2006/3/20, Christoph Lameter <clameter@sgi.com>:
> On Mon, 20 Mar 2006, Stone Wang wrote:
>
> > 2. More consistent LRU semantics in Memory Management.
> > Mlocked pages is placed on a separate LRU list: Wired List.
> > The pages dont take part in LRU algorithms,for they could never be swapped,
> > until munlocked.
>
> This also implies that dirty bits of the pte for mlocked pages are never
> checked.
>
> Currently light swapping (which is very common) will scan over all pages
> and move the dirty bits from the pte into struct page. This may take
> awhile but at least at some point we will write out dirtied pages.
>
> The result of not scanning mlocked pages will be that mmapped files will
> not be updated unless either the process terminates or msync() is called.
>
>
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next prev parent reply other threads:[~2006-03-21 5:23 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-03-20 13:35 Stone Wang
2006-03-20 13:41 ` Arjan van de Ven
2006-03-20 23:52 ` Nate Diller
2006-03-21 7:10 ` Arjan van de Ven
2006-03-21 12:24 ` Nick Piggin
2006-03-20 17:27 ` Christoph Lameter
2006-03-21 5:23 ` Stone Wang [this message]
2006-03-21 15:20 ` Stone Wang
2006-03-24 4:45 ` Rik van Riel
2006-03-21 12:20 ` Nick Piggin
2006-03-24 15:05 ` Stone Wang
2006-03-24 16:57 ` Nick Piggin
2006-03-24 14:36 ` Andi Kleen
2006-03-24 14:54 ` Stone Wang
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