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| author | Eric Blake | 2020-04-28 22:29:02 +0200 |
|---|---|---|
| committer | Kevin Wolf | 2020-05-08 13:26:35 +0200 |
| commit | be9c9404db7e6992946fa55c75ca61dfb20926eb (patch) | |
| tree | d1c974e4a6679cb120caf44aa086c36bb8abf53a /backends/hostmem.c | |
| parent | sheepdog: Support BDRV_REQ_ZERO_WRITE for truncate (diff) | |
| download | qemu-be9c9404db7e6992946fa55c75ca61dfb20926eb.tar.gz qemu-be9c9404db7e6992946fa55c75ca61dfb20926eb.tar.xz qemu-be9c9404db7e6992946fa55c75ca61dfb20926eb.zip | |
ssh: Support BDRV_REQ_ZERO_WRITE for truncate
Our .bdrv_has_zero_init_truncate can detect when the remote side
always zero fills; we can reuse that same knowledge to implement
BDRV_REQ_ZERO_WRITE by ignoring it when the server gives it to us for
free.
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200428202905.770727-7-eblake@redhat.com>
Reviewed-by: Richard W.M. Jones <rjones@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'backends/hostmem.c')
0 files changed, 0 insertions, 0 deletions