blockdev: add discard suboption to -drive
Add support for BDRV_O_UNMAP from the QEMU command-line. Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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Add support for BDRV_O_UNMAP from the QEMU command-line. Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>