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Date: Thu, 17 May 2018 10:44:06 +0100
From: Stefan Hajnoczi <stefanha@redhat.com>
Message-ID: <20180517094406.GA18718@stefanha-x1.localdomain>
References: <20180511120823.7892-1-famz@redhat.com>
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In-Reply-To: <20180511120823.7892-2-famz@redhat.com>
Subject: Re: [Qemu-devel] [PATCH v4 01/10] block: Introduce API for copy
 offloading
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To: Fam Zheng <famz@redhat.com>
Cc: qemu-devel@nongnu.org, Paolo Bonzini <pbonzini@redhat.com>, Ronnie Sahlberg <ronniesahlberg@gmail.com>, qemu-block@nongnu.org, Peter Lieven <pl@kamp.de>, Kevin Wolf <kwolf@redhat.com>, Max Reitz <mreitz@redhat.com>, eblake@redhat.com


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On Fri, May 11, 2018 at 08:08:14PM +0800, Fam Zheng wrote:
> Introduce the bdrv_co_copy_range() API for copy offloading.  Block
> drivers implementing this API support efficient copy operations that
> avoid reading each block from the source device and writing it to the
> destination devices.  Examples of copy offload primitives are SCSI
> EXTENDED COPY and Linux copy_file_range(2).
>=20
> Signed-off-by: Fam Zheng <famz@redhat.com>
> ---
>  block/io.c                | 96 +++++++++++++++++++++++++++++++++++++++++=
++++++
>  include/block/block.h     | 32 ++++++++++++++++
>  include/block/block_int.h | 38 +++++++++++++++++++
>  3 files changed, 166 insertions(+)

Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>

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