On 4/28/20 3:28 PM, Eric Blake wrote:
Based-on: <[email protected]>
[PATCH v7 00/10] block: Fix resize (extending) of short overlays
After reviewing Kevin's work, I questioned if we had a redundancy with
bdrv_has_zero_init_truncate. It turns out we do, and this is the result.
Patch 1 has been previously posted [1] and reviewed, the rest is new.
I did not address Neils' comment that modern gluster also always
0-initializes [2], as I am not set up to verify it (my changes to the
other drivers are semantic no-ops, so I don't feel as bad about
posting them with less rigourous testing).
[1] https://lists.gnu.org/archive/html/qemu-devel/2020-01/msg08070.html
[2] https://lists.gnu.org/archive/html/qemu-devel/2020-02/msg04266.html
Eric Blake (9):
gluster: Drop useless has_zero_init callback
file-win32: Support BDRV_REQ_ZERO_WRITE for truncate
nfs: Support BDRV_REQ_ZERO_WRITE for truncate
rbd: Support BDRV_REQ_ZERO_WRITE for truncate
sheepdog: Support BDRV_REQ_ZERO_WRITE for truncate
ssh: Support BDRV_REQ_ZERO_WRITE for truncate
parallels: Rework truncation logic
vhdx: Rework truncation logic
block: Drop unused .bdrv_has_zero_init_truncate
Ping.
--
Eric Blake, Principal Software Engineer
Red Hat, Inc. +1-919-301-3226
Virtualization: qemu.org | libvirt.org
