From: Todd Poynor <tpoynor@mvista.com>
To: David Woodhouse <dwmw2@infradead.org>
Cc: linux-mtd@lists.infradead.org
Subject: Re: mtdblock cache flush at remount
Date: Mon, 13 Sep 2004 18:08:45 -0700 [thread overview]
Message-ID: <4146449D.8030305@mvista.com> (raw)
In-Reply-To: <1092904045.3777.69.camel@imladris.demon.co.uk>
David Woodhouse wrote:
> I don't care much, but if you see a way to make sync() have the desired
> effect I wouldn't be averse to it.
I took a look, and don't see a good way to fix this short of modifying
generic code that requires a commit to media (like remount read-only and
sync). The modifications might call the block device layer to sync
things from its standpoint, such as issuing a BLKFLSBUF ioctl. If
mtdblock is unique in that it does not necessarily write a block to
stable storage when the block layer issues a write then this is not
likely to gain much interest. It's possible that the IDE drivers might
want to flush disk hardware buffers in such a situation as well, much
like what occurs at suspend and shutdown, but I haven't looked into that
yet. Thanks,
--
Todd Poynor
MontaVista Software
next prev parent reply other threads:[~2004-09-14 1:08 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-08-19 1:10 mtdblock cache flush at remount Todd Poynor
2004-08-19 8:27 ` David Woodhouse
2004-09-14 1:08 ` Todd Poynor [this message]
2004-09-14 6:52 ` David Woodhouse
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