mirror of https://gitee.com/openkylin/qemu.git
block drivers: add discard/write_zeroes properties to bdrv_get_info implementation
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Peter Lieven <pl@kamp.de> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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@ -1893,6 +1893,8 @@ static coroutine_fn int qcow2_co_flush_to_os(BlockDriverState *bs)
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static int qcow2_get_info(BlockDriverState *bs, BlockDriverInfo *bdi)
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{
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BDRVQcowState *s = bs->opaque;
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bdi->unallocated_blocks_are_zero = true;
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bdi->can_write_zeroes_with_unmap = (s->qcow_version >= 3);
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bdi->cluster_size = s->cluster_size;
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bdi->vm_state_offset = qcow2_vm_state_offset(s);
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return 0;
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@ -1475,6 +1475,8 @@ static int bdrv_qed_get_info(BlockDriverState *bs, BlockDriverInfo *bdi)
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memset(bdi, 0, sizeof(*bdi));
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bdi->cluster_size = s->header.cluster_size;
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bdi->is_dirty = s->header.features & QED_F_NEED_CHECK;
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bdi->unallocated_blocks_are_zero = true;
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bdi->can_write_zeroes_with_unmap = true;
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return 0;
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}
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@ -331,6 +331,7 @@ static int vdi_get_info(BlockDriverState *bs, BlockDriverInfo *bdi)
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logout("\n");
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bdi->cluster_size = s->block_size;
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bdi->vm_state_offset = 0;
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bdi->unallocated_blocks_are_zero = true;
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return 0;
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}
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@ -1049,6 +1049,9 @@ static int vhdx_get_info(BlockDriverState *bs, BlockDriverInfo *bdi)
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bdi->cluster_size = s->block_size;
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bdi->unallocated_blocks_are_zero =
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(s->params.data_bits & VHDX_PARAMS_HAS_PARENT) == 0;
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return 0;
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}
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@ -464,6 +464,7 @@ static int vpc_get_info(BlockDriverState *bs, BlockDriverInfo *bdi)
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bdi->cluster_size = s->block_size;
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}
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bdi->unallocated_blocks_are_zero = true;
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return 0;
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}
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