linux-kernel - Re: What happened to data=guarded?

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20090810164205.GC1505@ucw.cz>
Date:	Mon, 10 Aug 2009 18:42:05 +0200
From:	Pavel Machek <pavel@....cz>
To:	Theodore Tso <tytso@....edu>, Andi Kleen <andi@...stfloor.org>,
	Frans Pop <elendil@...net.nl>,
	Chris Mason <chris.mason@...cle.com>, jack@...e.cz,
	linux-kernel@...r.kernel.org, linux-ext4@...r.kernel.org
Subject: Re: What happened to data=guarded?

On Tue 2009-08-11 14:57:03, Theodore Tso wrote:
> On Tue, Aug 11, 2009 at 05:29:14PM +0200, Andi Kleen wrote:
> > > Good to hear. I've so far stayed with data=ordered as I think I'd prefer 
> > > data=guarded over data=writeback. I'll certainly give it a try when it's 
> > > available.
> > 
> > Same here. data=writeback already cost me a few files after crashes here :/
> 
> What sort of files were you losing?  I don't know if we can improve
> the implied flush hueristics, but we should at least try to see if we
> do something about it.

IIRC... the flush heuristics invoke async flush, so you can still lose
data if you are unlucky, no?
								Pavel

-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/