From: Paolo Bonzini <pbonzini@redhat.com>
To: Ming Lei <ming.lei@canonical.com>, Kevin Wolf <kwolf@redhat.com>
Cc: Peter Maydell <peter.maydell@linaro.org>,
Fam Zheng <famz@redhat.com>, qemu-devel <qemu-devel@nongnu.org>,
Stefan Hajnoczi <stefanha@redhat.com>,
"Michael S. Tsirkin" <mst@redhat.com>
Subject: Re: [Qemu-devel] [PATCH v2 1/3] block: block: introduce bdrv_io_plug() and bdrv_io_unplug()
Date: Wed, 02 Jul 2014 12:24:46 +0200 [thread overview]
Message-ID: <53B3DDEE.3000109@redhat.com> (raw)
In-Reply-To: <CACVXFVPbCdV8bccnP1u3dE+7sbb=gs9aFtP6MS9bapDgc8PUhQ@mail.gmail.com>
Il 02/07/2014 12:02, Ming Lei ha scritto:
>>> Actually linux-aio can support to submit read/write to multi files, and
>>> virtio-scsi does have the use case, so in future io queue should be
>>> per aio-context as I posted 1st time. And I am wondering if multiwrite-like
>>> APIs can fit in this situation.
>>
>> Though where would you get the requests for two different files from,
>> within the same bdrv_plug/unplug block?
>
> I think it is doable if io queue is per aio_context.
Yes, but that would basically mean moving linux-aio functionality to
AioContext. Effectively it's a rewrite of linux-aio.c.
Paolo
next prev parent reply other threads:[~2014-07-02 10:25 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-01 7:51 [Qemu-devel] [PATCH v2 0/3] linux-aio: introduce submit I/O at batch Ming Lei
2014-07-01 7:51 ` [Qemu-devel] [PATCH v2 1/3] block: block: introduce bdrv_io_plug() and bdrv_io_unplug() Ming Lei
2014-07-01 11:18 ` Kevin Wolf
2014-07-01 13:31 ` Ming Lei
2014-07-01 14:39 ` Ming Lei
2014-07-01 15:21 ` Kevin Wolf
2014-07-01 16:56 ` Paolo Bonzini
2014-07-02 0:46 ` Ming Lei
2014-07-02 2:35 ` Ming Lei
2014-07-02 8:18 ` Paolo Bonzini
2014-07-02 8:38 ` Kevin Wolf
2014-07-02 8:49 ` Paolo Bonzini
2014-07-02 8:39 ` Ming Lei
2014-07-02 8:56 ` Paolo Bonzini
2014-07-02 9:12 ` Kevin Wolf
2014-07-02 9:29 ` Ming Lei
2014-07-02 9:49 ` Kevin Wolf
2014-07-02 10:02 ` Ming Lei
2014-07-02 10:24 ` Paolo Bonzini [this message]
2014-07-02 10:28 ` Ming Lei
2014-07-02 9:26 ` Ming Lei
2014-07-01 7:51 ` [Qemu-devel] [PATCH v2 2/3] linux-aio: implement io plug and unplug Ming Lei
2014-07-01 7:51 ` [Qemu-devel] [PATCH v2 3/3] dataplane: submit I/O at batch Ming Lei
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