From: Dave Hansen <haveblue@us.ibm.com>
To: Rik van Riel <riel@redhat.com>
Cc: Nikita Danilov <nikita@clusterfs.com>,
linux-mm <linux-mm@kvack.org>, Andrew Morton <akpm@osdl.org>
Subject: Re: [PATCH]: VM 3/8 PG_skipped
Date: Mon, 18 Apr 2005 10:51:52 -0700 [thread overview]
Message-ID: <1113846712.10810.111.camel@localhost> (raw)
In-Reply-To: <Pine.LNX.4.61.0504181111390.8456@chimarrao.boston.redhat.com>
On Mon, 2005-04-18 at 11:12 -0400, Rik van Riel wrote:
> On Sun, 17 Apr 2005, Nikita Danilov wrote:
>
> > Don't call ->writepage from VM scanner when page is met for the first time
> > during scan.
>
> > Reason behind this is that ->writepages() will perform more efficient
> > writeout than ->writepage(). Skipping of page can be conditioned on
> > zone->pressure.
>
> Agreed, in order to write out blocks of pages at once from
> the pageout code, we'll need to wait with writing until the
> dirty bit has been propagated from the ptes to the pages.
Is there a way to do this without consuming a page->flags bit? We're
starting to run really low on them.
-- Dave
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next prev parent reply other threads:[~2005-04-18 17:52 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-04-17 17:36 Nikita Danilov
2005-04-18 15:12 ` Rik van Riel
2005-04-18 17:51 ` Dave Hansen [this message]
2005-04-18 20:29 ` Nikita Danilov
2005-04-26 3:43 ` Andrew Morton
2005-05-02 9:03 ` Hirokazu Takahashi
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