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Date: Sun, 5 Aug 2001 16:02:04 +0300
From: Matti Aarnio <matti.aarnio@zmailer.org>
To: Chris Wedgwood <cw@f00f.org>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH] 2.4.8-pre3 fsync entire path (+reiserfs fsync semantic change patch)
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In-Reply-To: <20010806003242.F21650@weta.f00f.org>; from cw@f00f.org on Mon, Aug 06, 2001 at 12:32:42AM +1200
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On Mon, Aug 06, 2001 at 12:32:42AM +1200, Chris Wedgwood wrote:
> On Sun, Aug 05, 2001 at 02:15:46PM +0200, Matthias Andree wrote:
> 
>     Why does it? Each file-system is self-contained with respect to hard
>     links. You cannot have link cross file system boundaries.
> 
>     Common code can be placed into a library. (Probably 2.5 stuff though.)
> 
> As pointed out by Jan Harkes, logic that works for ext2 (eg. walking
> the dentry chain and sync'ing all the components) sucks for things
> like Coda, where the performance impact may be noticable (actually,
> I'm not conviced it will be, but what do I know).
> 
> Not only that, it doesn't help qmail, cyrus imapd or Postfix
> completely.

	And for that matter, it (full access-tree fsync()ing) isn't
	necessary for systems which don't go around creating directories,
	instead place things into existing ones, and move things around
	in between the directories.


>   --cw

/Matti Aarnio