From: Christoph Hellwig <hch@infradead.org>
To: Jens Axboe <jaxboe@fusionio.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [GIT PULL] block bits for 3.1-rc
Date: Sat, 20 Aug 2011 13:41:37 -0400 [thread overview]
Message-ID: <20110820174137.GA27243@infradead.org> (raw)
In-Reply-To: <4E4E6238.3080808@fusionio.com>
On Fri, Aug 19, 2011 at 03:16:40PM +0200, Jens Axboe wrote:
> - Revert of the CFQ meta data special treatment patch, it's been shown
> to regress a kernel build workload by about 10%. More investigation
> is needed, for 3.1 lets just back it out.
Sorry, but you can't simply do that without any coordination. We have
added that marker to xfs now that the stupid special casing stopped,
and turning it back on will cause us massive slowdows. Next time
please better coordinate this with its users. In fact I have never
seen this patch or a discussion on any mailinglist.
next prev parent reply other threads:[~2011-08-20 17:41 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-19 13:16 [GIT PULL] block bits for 3.1-rc Jens Axboe
2011-08-19 17:50 ` Linus Torvalds
2011-08-19 17:57 ` Jens Axboe
2011-08-20 17:41 ` Christoph Hellwig [this message]
2011-08-20 19:15 ` Mike Snitzer
2011-08-21 17:56 ` Jens Axboe
2011-08-21 18:19 ` Christoph Hellwig
2011-08-21 18:37 ` Jens Axboe
2011-08-22 16:52 ` [PATCH 1/2] block: remove READ_META and WRITE_META Christoph Hellwig
2011-08-22 16:52 ` [PATCH 2/2] block: separate priority boosting from REQ_META Christoph Hellwig
2011-08-23 2:05 ` Namhyung Kim
2011-08-23 10:09 ` [PATCH 2/2 v2] " Christoph Hellwig
2011-08-23 12:31 ` Namhyung Kim
2011-08-23 12:52 ` Jens Axboe
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