Date: Wed, 10 Mar 2004 21:17:37 +0100
From: Jens Axboe <axboe@suse.de>
To: Andrew Morton <akpm@osdl.org>
Cc: linux-kernel@vger.kernel.org, kenneth.w.chen@intel.com,
       thornber@redhat.com
Subject: Re: [PATCH] backing dev unplugging
Message-ID: <20040310201737.GF15087@suse.de>
References: <20040310124507.GU4949@suse.de> <20040310115545.16cb387f.akpm@osdl.org>
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On Wed, Mar 10 2004, Andrew Morton wrote:
> Jens Axboe <axboe@suse.de> wrote:
> >
> > Here's a first cut at killing global plugging of block devices to reduce
> > the nasty contention blk_plug_lock caused. This introduceds per-queue
> > plugging, controlled by the backing_dev_info.
> 
> This is such an improvement over what we have now it isn't funny.

It is pretty scary, once I dove into it...

-- 
Jens Axboe

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