From: Marcelo Tosatti <marcelo@conectiva.com.br>
To: Roman Zippel <zippel@fh-brandenburg.de>
Cc: linux-mm@kvack.org
Subject: Re: page locking and error handling
Date: Fri, 16 Feb 2001 16:20:42 -0200 (BRST) [thread overview]
Message-ID: <Pine.LNX.4.21.0102161603240.682-100000@freak.distro.conectiva> (raw)
In-Reply-To: <Pine.GSO.4.10.10102151526100.26610-100000@zeus.fh-brandenburg.de>
On Thu, 15 Feb 2001, Roman Zippel wrote:
> Hi,
<snip>
> - page locking has to happen completely at the higher layer and keeping
> multiple pages locked would require something like 1).
> - this would allow to pass multiple pages at once to the mapping
> mechanism, as we can easily link several pages together. This
> actually is all what is needed/wanted for streaming and no need for a
> heavyweight kiobuf.
At commit_write(), the buffers of the pages which are being writen are
only marked dirty and not necessarily queued to IO. commit_write() will
start writting older dirty buffers with flush_dirty_buffers() if the
system is over a watermark of dirty data, which _may_ write dirty buffers
from the current write() syscall. (O_SYNC is another story..)
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prev parent reply other threads:[~2001-02-16 18:20 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-02-15 15:02 Roman Zippel
2001-02-15 15:33 ` Eric W. Biederman
2001-02-15 18:50 ` Roman Zippel
2001-02-15 23:37 ` Eric W. Biederman
2001-02-16 18:20 ` Marcelo Tosatti [this message]
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