linux-kernel - Re: ext4: Fix data corruption with multi-block writepages support

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]

Date:	Mon, 7 Feb 2011 12:45:52 -0500
From:	Ted Ts'o <tytso@....edu>
To:	Matt <jackdachef@...il.com>
Cc:	Linux Kernel <linux-kernel@...r.kernel.org>,
	linux-ext4 <linux-ext4@...r.kernel.org>
Subject: Re: ext4: Fix data corruption with multi-block writepages support

On Fri, Feb 04, 2011 at 10:40:47PM +0000, Matt wrote:
> 
> So that means that the file-corruption which existed until 2.6.37-rc6
> and got triggered (for me) more easily via "dm crypt: scale to
> multiple CPUs"
> is fixed now ?

Well, a patch exists for it that will be merged into 2.6.38.

> That should give ext4 a nice speedup for >=2.6.38 :)

I'm not going to make it be the default for 2.6.38, since it's fairly
late in the -rc features.  People who want it can explicitly enable it
using the mount option mblk_io_submit, though.  (And let me know your
success stories!  :-) I will be enabling it as the default in
2.6.39-rc1.

> Reported-by: Matthias Bayer <jackdachef <at> gmail <dot> com >

Sure!

						- Ted
--
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/