From: Andrea Arcangeli <andrea@suse.de>
To: Rik van Riel <riel@conectiva.com.br>
Cc: Linus Torvalds <torvalds@transmeta.com>,
Ingo Molnar <mingo@elte.hu>,
linux-mm@kvack.org, "Stephen C. Tweedie" <sct@redhat.com>
Subject: Re: [highmem bug report against -test5 and -test6] Re: [PATCH] Re: simple FS application that hangs 2.4-test5, mem mgmt problem or FS buffer cache mgmt problem? (fwd)
Date: Tue, 3 Oct 2000 00:18:34 +0200 [thread overview]
Message-ID: <20001003001834.A25467@athlon.random> (raw)
In-Reply-To: <Pine.LNX.4.21.0010021902530.1067-100000@duckman.distro.conectiva>; from riel@conectiva.com.br on Mon, Oct 02, 2000 at 07:08:20PM -0300
On Mon, Oct 02, 2000 at 07:08:20PM -0300, Rik van Riel wrote:
> Yes it has. The write order in flush_dirty_buffers() is the order
> in which the pages were written. This may be different from the
> LRU order and could give us slightly better IO performance.
And it will forbid us to use barriers in software elevator and in SCSI hardware
to avoid having to wait I/O completation every time a journaling fs needs to do
ordered writes. The write ordering must remain irrelevant to the page-LRU
order.
Andrea
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next prev parent reply other threads:[~2000-10-02 22:18 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-10-02 19:35 [highmem bug report against -test5 and -test6] Re: [PATCH] Re: simple FS application that hangs 2.4-test5, mem mgmt problem or FS buffer cache mgmt problem? (fwd) Rik van Riel
2000-10-02 19:56 ` Andrea Arcangeli
2000-10-02 19:59 ` Rik van Riel
2000-10-02 20:17 ` Andrea Arcangeli
2000-10-02 20:24 ` Rik van Riel
2000-10-02 21:16 ` Linus Torvalds
2000-10-02 20:06 ` Linus Torvalds
2000-10-02 20:16 ` Rik van Riel
2000-10-02 20:25 ` Ingo Molnar
2000-10-02 20:45 ` Rik van Riel
2000-10-02 21:21 ` Linus Torvalds
2000-10-02 21:27 ` Rik van Riel
2000-10-02 21:19 ` Linus Torvalds
2000-10-02 21:23 ` Rik van Riel
2000-10-02 21:31 ` Linus Torvalds
2000-10-02 21:42 ` Rik van Riel
2000-10-02 21:58 ` Linus Torvalds
2000-10-02 22:08 ` Rik van Riel
2000-10-02 22:18 ` Andrea Arcangeli [this message]
2000-10-02 22:23 ` Rik van Riel
2000-10-02 23:06 ` Linus Torvalds
2000-10-02 23:12 ` Rik van Riel
2000-10-02 23:16 ` Linus Torvalds
2000-10-02 23:20 ` Andrea Arcangeli
2000-10-02 22:53 ` Linus Torvalds
2000-10-02 23:06 ` Rik van Riel
2000-10-02 23:14 ` Linus Torvalds
2000-10-02 21:57 ` Ingo Molnar
2000-10-02 21:52 ` Rik van Riel
2000-10-02 22:53 ` Ingo Molnar
2000-10-02 23:01 ` Rik van Riel
2000-10-02 23:10 ` Andrea Arcangeli
2000-10-02 23:29 ` Ingo Molnar
2000-10-02 23:25 ` Andrea Arcangeli
2000-10-02 23:32 ` Linus Torvalds
2000-10-03 12:05 ` Ingo Molnar
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