linux-kernel - Re: [PATCH] issue storage dev flush from generic file

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Date:	Mon, 30 Mar 2009 10:25:40 +0900
From:	Fernando Luis Vázquez Cao 
	<fernando@....ntt.co.jp>
To:	Christoph Hellwig <hch@...radead.org>
CC:	Jeff Garzik <jeff@...zik.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Theodore Tso <tytso@....edu>, Ingo Molnar <mingo@...e.hu>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Arjan van de Ven <arjan@...radead.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Nick Piggin <npiggin@...e.de>, David Rees <drees76@...il.com>,
	Jesper Krogh <jesper@...gh.cc>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] issue storage dev flush from generic file_fsync helper

Christoph Hellwig wrote:
> Looks good except that we still need a tuning know for it.  Preferably
> one that works for these filesystems and all the existing barrier using
> ones.

Christoph, I reworked my previous fsync() patches so that what was a 
mount option to trigger a storage device writeback cache flush becomes a 
sysfs knob.

I still need to add support for automatic detection of underlying 
device's flushing capabilities but first I would like to know if you 
agree with the general approach.

I'll be replying to this email with the new patches.

- Fernando
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