From: RaTao <ratao@toxyn.org>
To: Andrew Morton <akpm@osdl.org>, linux-kernel@vger.kernel.org
Subject: linux-2.6.0-linux-kernel@vger.kernel.orgtest2-mm4 O_DIRECT
Date: Wed, 06 Aug 2003 10:52:01 +0100 [thread overview]
Message-ID: <3F30CFC1.1090205@toxyn.org> (raw)
Hi!
While testing linux-2.6.0-test2-mm4 I noticed two things:
- O_DIRECT doesn't work, at least in ext3, with block size different
from filesystem's blocksize. (It doesn't work with 512 bs, at least).
This works in 2.6.0-test2, from 512 to 4096.
- vmstat doesn't show bi/bo for O_DIRECT's disk access.
Tested with filesystem's bs alignment.
This works in 2.6.0-test2.
(This one can be a feature, not a bug. But I really don't know)
Just to let you know! :)
If I can help with something feel free to ask. I tried to review -mm4
but it's too big for me so I can't point where the "problem" is...
Anyway, I suspect the AIO stuff ;)
Have fun,
RaTao
next reply other threads:[~2003-08-06 9:49 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-08-06 9:52 RaTao [this message]
2003-08-06 19:17 ` linux-2.6.0-linux-kernel@vger.kernel.orgtest2-mm4 O_DIRECT Andrew Morton
2003-08-06 21:32 ` linux-2.6.0-test2-mm4 O_DIRECT RaTao
2003-08-06 22:36 ` Daniel McNeil
2003-08-07 1:55 ` RaTao
2003-08-07 2:18 ` 2.6.0-test2, compact flash, IDE, and kobject errors J.C. Wren
2003-08-07 2:38 ` Bartlomiej Zolnierkiewicz
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