linux-ext4 - Re: buffered writeback torture program

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: <20110421174120.GA7267@infradead.org>
Date:	Thu, 21 Apr 2011 13:41:21 -0400
From:	Christoph Hellwig <hch@...radead.org>
To:	Chris Mason <chris.mason@...cle.com>
Cc:	Christoph Hellwig <hch@...radead.org>,
	linux-fsdevel <linux-fsdevel@...r.kernel.org>,
	linux-ext4 <linux-ext4@...r.kernel.org>, xfs <xfs@....sgi.com>,
	jack <jack@...e.cz>, axboe <axboe@...nel.dk>,
	dchinner <dchinner@...hat.com>
Subject: Re: buffered writeback torture program

On Thu, Apr 21, 2011 at 01:34:44PM -0400, Chris Mason wrote:
> Sorry, this doesn't do it.  I think that given what a strange special
> case this is, we're best off waiting for the IO-less throttling, and
> maybe changing the code in xfs/ext4 to be a little more seek aware.  Or
> maybe not, it has to get written eventually either way.

I'm not sure what you mean with seek aware.  XFS only clusters
additional pages that are in the same extent, and in fact only does
so for asynchrononous writeback.  Not sure how this should be more
seek aware.

--
To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html