linux-kernel - Re: [PATCH] Freeze bdevs when freezing processes.

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: <20061024170857.GB17956@infradead.org>
Date:	Tue, 24 Oct 2006 18:08:57 +0100
From:	Christoph Hellwig <hch@...radead.org>
To:	Oleg Verych <olecom@...wer.upol.cz>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Freeze bdevs when freezing processes.

On Tue, Oct 24, 2006 at 04:20:31PM +0000, Oleg Verych wrote:
> > Do you mean calling sys_sync() after the userspace has been frozen
> > may not be sufficient?
> 
> Please see
> <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=317479;msg=105;att=0>
> 
> it's bottom of
> <http://bugs.debian.org/317479>
> 
> IMHO it's may be helpful.

It's not.  It'sa step in the wrong direction.  The only way to guarantee
a filesystem (not just xfs, _any_ filesystem - xfs is just most sensitive)
is to call the write_super_lockfs method.

-
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/