From: Rik van Riel <riel@redhat.com>
To: Nikita Danilov <nikita@clusterfs.com>
Cc: linux-mm@kvack.org, Andrew Morton <AKPM@Osdl.ORG>
Subject: Re: [PATCH]: VM 3/8 PG_skipped
Date: Mon, 18 Apr 2005 11:12:42 -0400 (EDT) [thread overview]
Message-ID: <Pine.LNX.4.61.0504181111390.8456@chimarrao.boston.redhat.com> (raw)
In-Reply-To: <16994.40579.617974.423522@gargle.gargle.HOWL>
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.
--
"Debugging is twice as hard as writing the code in the first place.
Therefore, if you write the code as cleverly as possible, you are,
by definition, not smart enough to debug it." - Brian W. Kernighan
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next prev parent reply other threads:[~2005-04-18 15:12 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 [this message]
2005-04-18 17:51 ` Dave Hansen
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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