From: Trond Myklebust <trond.myklebust@fys.uio.no>
To: Gregory Giguashvili <Gregoryg@ParadigmGeo.com>
Cc: Andi Kleen <ak@suse.de>, linux-kernel@vger.kernel.org
Subject: Re: Problem with msync system call
Date: 23 Jul 2002 20:01:07 +0200 [thread overview]
Message-ID: <shsheiql3x8.fsf@charged.uio.no> (raw)
In-Reply-To: <p73fzyatlsi.fsf@oldwotan.suse.de>
>>>>> " " == Andi Kleen <ak@suse.de> writes:
> Do a F_SETFL lock/unlock on the file That should act as a full
> NFS write barrier and flush all buffers. Best is if you
> synchronize between the various writers with the full lock.
Note: This will not work for files that are in the process of being
mmap()ed. In order to make it all work, you have to munmap() first,
then lock, then mmap().
This is due to limitations in the VM which won't allow anyone to
invalidate a mapping that is in use.
Cheers,
Trond
next prev parent reply other threads:[~2002-07-23 17:58 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <EE83E551E08D1D43AD52D50B9F511092E1149F@ntserver2.suse.lists.linux.kernel>
2002-07-23 17:07 ` Problem with msync system call Andi Kleen
2002-07-23 18:01 ` Trond Myklebust [this message]
2002-07-23 19:36 Gregory Giguashvili
-- strict thread matches above, loose matches on Subject: below --
2002-07-23 19:04 Gregory Giguashvili
2002-07-23 18:45 Gregory Giguashvili
2002-07-23 18:06 ` Andi Kleen
2002-07-23 18:00 Gregory Giguashvili
2002-07-23 16:58 Gregory Giguashvili
2002-07-23 16:31 ` Dr. Michael Weller
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