From: Paolo Bonzini <pbonzini@redhat.com>
To: "Liu, Changpeng" <changpeng.liu@intel.com>,
"virtualization@lists.linux-foundation.org"
<virtualization@lists.linux-foundation.org>
Cc: "hch@lst.de" <hch@lst.de>, "mst@redhat.com" <mst@redhat.com>
Subject: Re: [PATCH v2] virtio-blk: add DISCARD support to virtio-blk driver
Date: Wed, 5 Jul 2017 10:00:23 +0200 [thread overview]
Message-ID: <1e57bca7-cf5c-741d-b0f2-d026826d2dcc@redhat.com> (raw)
In-Reply-To: <FF7FC980937D6342B9D289F5F3C7C2625B595B29@SHSMSX103.ccr.corp.intel.com>
On 05/07/2017 09:57, Liu, Changpeng wrote:
>> Please include a patch for the specification. Since we are at it, I
> Thanks Paolo, do you mean include a text file which describe the changes for the specification?
The specification is hosted in an svn (Subversion) repository at
https://tools.oasis-open.org/version-control/svn/virtio. You can
provide a patch and send it to virtio-comment@lists.oasis-open.org.
Thanks,
Paolo
>> would like to have three operations defined using the same descriptor:
>>
>> - discard (SCSI UNMAP)
>>
>> - write zeroes (SCSI WRITE SAME without UNMAP flag)
>>
>> - write zeroes and possibly discard (SCSI WRITE SAME with UNMAP flag)
>>
>> The last two can use the same command VIRTIO_BLK_T_WRITE_ZEROES, using
>> the reserved field as a flags field.
>
> Will add write zeroes feature.
next prev parent reply other threads:[~2017-07-05 8:00 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-07-04 8:26 [PATCH v2] virtio-blk: add DISCARD support to virtio-blk driver Changpeng Liu
2017-07-04 9:24 ` Paolo Bonzini
2017-07-04 21:35 ` Michael S. Tsirkin
2017-07-05 7:57 ` Liu, Changpeng
2017-07-05 8:00 ` Paolo Bonzini [this message]
2017-07-05 12:56 ` Michael S. Tsirkin
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