From: Asias He <asias@redhat.com>
To: Rusty Russell <rusty@rustcorp.com.au>
Cc: kvm@vger.kernel.org, "Michael S. Tsirkin" <mst@redhat.com>,
linux-kernel@vger.kernel.org,
virtualization@lists.linux-foundation.org,
Christoph Hellwig <hch@lst.de>
Subject: Re: [PATCH 3/3] virtio-blk: Add bio-based IO path for virtio-blk
Date: Mon, 18 Jun 2012 16:03:23 +0800 [thread overview]
Message-ID: <4FDEE0CB.1030505@redhat.com> (raw)
In-Reply-To: <87hau9yse7.fsf@rustcorp.com.au>
On 06/18/2012 03:46 PM, Rusty Russell wrote:
> On Mon, 18 Jun 2012 14:53:10 +0800, Asias He <asias@redhat.com> wrote:
>> This patch introduces bio-based IO path for virtio-blk.
>
> Why make it optional?
request-based IO path is useful for users who do not want to bypass the
IO scheduler in guest kernel, e.g. users using spinning disk. For users
using fast disk device, e.g. SSD device, they can use bio-based IO path.
--
Asias
next prev parent reply other threads:[~2012-06-18 8:03 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-18 6:53 [PATCH v2 0/3] Improve virtio-blk performance Asias He
2012-06-18 6:53 ` [PATCH 1/3] block: Introduce __blk_segment_map_sg() helper Asias He
2012-06-18 21:31 ` Tejun Heo
2012-06-19 2:02 ` Asias He
2012-06-19 18:00 ` Tejun Heo
2012-06-18 6:53 ` [PATCH v2 2/3] block: Add blk_bio_map_sg() helper Asias He
2012-06-18 6:53 ` [PATCH 3/3] virtio-blk: Add bio-based IO path for virtio-blk Asias He
2012-06-18 7:46 ` Rusty Russell
2012-06-18 8:03 ` Asias He [this message]
2012-06-18 10:05 ` Rusty Russell
2012-06-18 11:14 ` Dor Laor
2012-06-18 11:39 ` Sasha Levin
2012-06-19 2:51 ` Asias He
2012-06-19 6:21 ` Dor Laor
2012-06-20 4:46 ` Asias He
2012-06-21 9:49 ` Dor Laor
2012-07-01 23:54 ` Rusty Russell
[not found] ` <87r4svxcjw.fsf@rustcorp.com.au>
2012-07-02 2:45 ` Asias He
2012-07-02 6:41 ` Rusty Russell
2012-07-03 0:39 ` Asias He
2012-07-04 2:40 ` Rusty Russell
2012-07-06 1:03 ` Asias He
2012-07-03 13:31 ` Paolo Bonzini
[not found] ` <4FF2F417.2010209@redhat.com>
2012-07-03 14:02 ` Asias He
2012-07-03 14:22 ` Ronen Hod
2012-07-03 14:28 ` Dor Laor
2012-07-04 14:10 ` Paolo Bonzini
2012-06-18 21:28 ` Tejun Heo
2012-06-19 2:39 ` Asias He
2012-06-18 10:13 ` Michael S. Tsirkin
2012-06-19 2:21 ` Asias He
2012-06-18 9:37 ` Stefan Hajnoczi
2012-06-18 10:21 ` Michael S. Tsirkin
2012-06-18 10:45 ` Stefan Hajnoczi
2012-06-19 2:30 ` Asias He
2012-06-18 9:14 ` [PATCH v2 0/3] Improve virtio-blk performance Stefan Hajnoczi
2012-06-18 9:39 ` Asias He
2012-06-18 10:58 ` Stefan Hajnoczi
2012-06-19 4:24 ` Asias He
2012-06-19 10:14 ` Stefan Hajnoczi
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