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Date: Sat, 17 Dec 2005 12:38:03 -0800
From: Andrew Morton <akpm@osdl.org>
To: Patrick Fritzsch <fritzsch@cip.physik.uni-muenchen.de>
Cc: linux-kernel@vger.kernel.org
Subject: Re: slow sync of fat 32 hotplugged devices
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Patrick Fritzsch <fritzsch@cip.physik.uni-muenchen.de> wrote:
>
> Wouldnt it be a nice behaviour, if you could mount a file in a new sync
> mode, where it isnt synchronized during writing a file, only when a
> close ioctl command was executed on a filehandle?
> sync writing to hotplugged devices would be a lot faster then.

Yeah, this was discussed recently: `mount -o flush'.  It'll sync each file
on the final close().  I forget who was doing that, but it's gone quiet
lately.

It's not completely trivial - some work in each fs will be needed to check
that we sync everything which should be sunc.  Such as the superblock...