Date: Wed, 12 Mar 2008 13:30:01 +0000
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Benny Amorsen <benny+usenet@amorsen.dk>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [ANNOUNCE] Ramback: faster than a speeding bullet
Message-ID: <20080312133001.1668f40d@the-village.bc.nu>
In-Reply-To: <m3d4q08477.fsf@ursa.amorsen.dk>
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	<m3d4q08477.fsf@ursa.amorsen.dk>
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> Everyone who has write cache turned on for their hard drives is
> running in a mode similar to ramback anyway (except for when the file
> system is set to force writes to the platter, but that is rare).
> Admittedly, software crashes rarely cause the write cache to be lost,
> but hardware failures do, practically every time.

On the contrary - the hard disk cache is managed by the barrier logic in
the kernel, and the ordering even on failures is fairly predictable.

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