From: Matt Mackall <mpm@selenic.com>
To: Rik van Riel <riel@redhat.com>
Cc: Christoph Hellwig <hch@infradead.org>,
Dave McCracken <dmccr@us.ibm.com>,
"Martin J. Bligh" <mbligh@aracnet.com>,
linux-kernel@vger.kernel.org
Subject: Re: 230-objrmap fixes for 2.6.3-mjb2
Date: Thu, 4 Mar 2004 11:03:05 -0600 [thread overview]
Message-ID: <20040304170305.GL3883@waste.org> (raw)
In-Reply-To: <Pine.LNX.4.44.0403041040310.20043-100000@chimarrao.boston.redhat.com>
On Thu, Mar 04, 2004 at 10:41:51AM -0500, Rik van Riel wrote:
> On Wed, 3 Mar 2004, Christoph Hellwig wrote:
> > On Wed, Mar 03, 2004 at 09:58:44AM -0600, Dave McCracken wrote:
> > > It'd mean the page struct would have to have a count of the number of
> > > mlock()ed regions it belongs to, and we'd have to update all the pages each
> > > time we call it.
> >
> > That would add another atomic_t to struct pages..
>
> No need for that. If a page is mlocked, it shouldn't be on any
> of the LRU lists (since it can't be swapped out yadda yadda).
>
> That means the locked count can share space in the struct page
> with the list head used for the lru.
And we can drop the VM_RESERVED flag, which is currently used in a
bunch of places where it's not on lists already.
--
Matt Mackall : http://www.selenic.com : Linux development and consulting
next prev parent reply other threads:[~2004-03-04 17:03 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-03-03 7:09 230-objrmap fixes for 2.6.3-mjb2 Andrea Arcangeli
2004-03-03 10:58 ` Andrew Morton
2004-03-03 15:46 ` Martin J. Bligh
2004-03-03 15:58 ` Dave McCracken
2004-03-03 16:08 ` Christoph Hellwig
2004-03-03 19:04 ` Mike Kravetz
2004-03-04 15:41 ` Rik van Riel
2004-03-04 15:47 ` Christoph Hellwig
2004-03-04 16:21 ` Rik van Riel
2004-03-04 17:03 ` Matt Mackall [this message]
2004-03-03 16:57 ` Andrea Arcangeli
2004-03-03 17:07 ` Dave McCracken
2004-03-03 18:39 ` Andrea Arcangeli
2004-03-03 18:44 ` Dave McCracken
2004-03-03 18:51 ` Andrea Arcangeli
2004-03-03 19:01 ` Dave McCracken
2004-03-03 21:05 ` Andrea Arcangeli
2004-03-03 21:39 ` Martin J. Bligh
2004-03-03 23:16 ` Andrea Arcangeli
2004-03-03 17:06 ` Andrea Arcangeli
2004-03-03 15:54 ` Martin J. Bligh
2004-03-03 16:14 ` Andrea Arcangeli
2004-03-25 21:45 ` Andrea Arcangeli
2004-03-26 11:57 ` Hugh Dickins
2004-03-26 18:02 ` Andrea Arcangeli
2004-03-26 23:25 ` Andrew Morton
2004-03-27 14:24 ` Andrea Arcangeli
2004-03-27 15:29 ` Dave McCracken
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