From: "Justin M. Forbes" <jforbes@fedoraproject.org>
To: Ming Lei <ming.lei@canonical.com>
Cc: Jens Axboe <axboe@kernel.dk>,
linux-kernel@vger.kernel.org, Jeff Moyer <jmoyer@redhat.com>,
Tejun Heo <tj@kernel.org>, Christoph Hellwig <hch@infradead.org>
Subject: Re: [PATCH 0/2] block: loop: fix stacked loop and performance regression
Date: Tue, 05 May 2015 14:01:05 -0500 [thread overview]
Message-ID: <1430852465.11260.1.camel@fedoraproject.org> (raw)
In-Reply-To: <1430826595-5888-1-git-send-email-ming.lei@canonical.com>
On Tue, 2015-05-05 at 19:49 +0800, Ming Lei wrote:
> Hi,
>
> The 1st patch convers to per-device workqueue because loop devices
> can be stacked.
>
> The 2nd patch decreases max active works as 16, so that fedora 22's
> boot performance regression can be fixed.
>
> drivers/block/loop.c | 30 ++++++++++++++----------------
> drivers/block/loop.h | 1 +
> 2 files changed, 15 insertions(+), 16 deletions(-)
>
>
> Thanks,
> Ming Lei
>
Tested with Fedora 22 ISOs, these still solve the problem for us.
Tested-by: Justin M. Forbes <jforbes@fedoraproject.org>
prev parent reply other threads:[~2015-05-05 19:01 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-05 11:49 [PATCH 0/2] block: loop: fix stacked loop and performance regression Ming Lei
2015-05-05 11:49 ` [PATCH 1/2] block: loop: convert to per-device workqueue Ming Lei
2015-05-05 14:00 ` Tejun Heo
2015-05-26 22:29 ` Dave Kleikamp
2015-05-05 11:49 ` [PATCH 2/2] block: loop: avoiding too many pending per work I/O Ming Lei
2015-05-05 13:59 ` Tejun Heo
2015-05-05 14:46 ` Ming Lei
2015-05-05 16:55 ` Tejun Heo
2015-05-06 3:14 ` Ming Lei
2015-05-06 5:17 ` Ming Lei
2015-05-06 7:36 ` Christoph Hellwig
2015-05-06 11:43 ` Ming Lei
2015-05-22 12:36 ` Josh Boyer
2015-05-22 13:32 ` Ming Lei
2015-05-05 19:01 ` Justin M. Forbes [this message]
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