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| author | Eric Blake | 2020-04-28 22:28:59 +0200 |
|---|---|---|
| committer | Kevin Wolf | 2020-05-08 13:26:35 +0200 |
| commit | 8f23aaf5d6a5458e251c5d5d0555d9e515355e35 (patch) | |
| tree | 222449c884848e6ede2fb43e7d0343372aa91192 /include/exec/memory.h | |
| parent | file-win32: Support BDRV_REQ_ZERO_WRITE for truncate (diff) | |
| download | qemu-8f23aaf5d6a5458e251c5d5d0555d9e515355e35.tar.gz qemu-8f23aaf5d6a5458e251c5d5d0555d9e515355e35.tar.xz qemu-8f23aaf5d6a5458e251c5d5d0555d9e515355e35.zip | |
nfs: Support BDRV_REQ_ZERO_WRITE for truncate
Our .bdrv_has_zero_init_truncate returns 1 if we detect that the OS
always 0-fills; we can use that same knowledge to implement
BDRV_REQ_ZERO_WRITE by ignoring it when the OS gives it to us for
free.
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200428202905.770727-4-eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'include/exec/memory.h')
0 files changed, 0 insertions, 0 deletions