[Qemu-commits] [qemu/qemu] fb0b15: virtio-blk: Respect discard granularity

[Peter Maydell]

  Branch: refs/heads/master
  Home:   https://github.com/qemu/qemu
  Commit: fb0b154c801e3447e505de420195fb7038695941
      
https://github.com/qemu/qemu/commit/fb0b154c801e3447e505de420195fb7038695941
  Author: Akihiko Odaki <akihiko.odaki@gmail.com>
  Date:   2021-03-15 (Mon, 15 Mar 2021)

  Changed paths:
    M hw/block/virtio-blk.c
    M hw/core/machine.c
    M include/hw/virtio/virtio-blk.h

  Log Message:
  -----------
  virtio-blk: Respect discard granularity

Report the configured granularity for discard operation to the
guest. If this is not set use the block size.

Since until now we have ignored the configured discard granularity
and always reported the block size, let's add
'report-discard-granularity' property and disable it for older
machine types to avoid migration issues.

Signed-off-by: Akihiko Odaki <akihiko.odaki@gmail.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20210225001239.47046-1-akihiko.odaki@gmail.com>


  Commit: 2615a5e433aeb812c300d3a48e1a88e1303e2339
      
https://github.com/qemu/qemu/commit/2615a5e433aeb812c300d3a48e1a88e1303e2339
  Author: Peter Maydell <peter.maydell@linaro.org>
  Date:   2021-03-15 (Mon, 15 Mar 2021)

  Changed paths:
    M hw/block/virtio-blk.c
    M hw/core/machine.c
    M include/hw/virtio/virtio-blk.h

  Log Message:
  -----------
  Merge remote-tracking branch 
'remotes/stefanha-gitlab/tags/block-pull-request' into staging

Pull request

# gpg: Signature made Mon 15 Mar 2021 09:50:58 GMT
# gpg:                using RSA key 8695A8BFD3F97CDAAC35775A9CA4ABB381AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>" [full]
# gpg:                 aka "Stefan Hajnoczi <stefanha@gmail.com>" [full]
# Primary key fingerprint: 8695 A8BF D3F9 7CDA AC35  775A 9CA4 ABB3 81AB 73C8

* remotes/stefanha-gitlab/tags/block-pull-request:
  virtio-blk: Respect discard granularity

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>


Compare: https://github.com/qemu/qemu/compare/e7c6a8cf9f5c...2615a5e433ae