From: Arjan van de Ven <arjanv@redhat.com>
To: Keith Ansell <keitha@edp.fastfreenet.com>
Cc: linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: bdflush flushing memory mapped pages.
Date: 09 Apr 2003 11:22:43 +0200 [thread overview]
Message-ID: <1049880162.1424.2.camel@laptop.fenrus.com> (raw)
In-Reply-To: <007601c2fecd$12209070$230110ac@kaws>
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On Wed, 2003-04-09 at 21:20, Keith Ansell wrote:
> help
>
> My application uses SHARED memory mapping files for file I/O, and we have
> observed
> that Linux does not flush dirty pages to disk until munmap or msync are
> called.
>
> I would like to know are there any development plans which would address
> this issue or
> if there is a version of bdflush which flushes write required pages (dirty
> pages) to disk?
The linux behavior is perfectly fine and conformant to the posix/sus
specifications, applications that break because of this are defective
and need fixing. This is a performance optimisation that the OS is
perfectly allowed to do.
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next prev parent reply other threads:[~2003-04-09 9:11 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-04-09 19:20 bdflush flushing memory mapped pages Keith Ansell
2003-04-09 9:13 ` Andre Hedrick
2003-04-09 9:27 ` Andrew Morton
2003-04-09 9:33 ` Jens Axboe
2003-04-10 20:09 ` Keith Ansell
2003-04-10 8:16 ` Andre Hedrick
2003-04-10 9:02 ` Nick Piggin
2003-04-10 17:04 ` Alan Cox
2003-04-09 9:22 ` Arjan van de Ven [this message]
2003-04-09 10:39 ` Alan Cox
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