Commit 95de6d70 authored Nov 22, 2013 by Paolo Bonzini Committed by Stefan Hajnoczi Dec 03, 2013

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>

parent 97b00e28

block/qcow2.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -1893,6 +1893,8 @@ static coroutine_fn int qcow2_co_flush_to_os(BlockDriverState *bs)
		static int qcow2_get_info(BlockDriverState bs, BlockDriverInfo bdi)
		{
		BDRVQcowState *s = bs->opaque;
		bdi->unallocated_blocks_are_zero = true;
		bdi->can_write_zeroes_with_unmap = (s->qcow_version >= 3);
		bdi->cluster_size = s->cluster_size;
		bdi->vm_state_offset = qcow2_vm_state_offset(s);
		return 0;

block/qed.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -1475,6 +1475,8 @@ static int bdrv_qed_get_info(BlockDriverState bs, BlockDriverInfo bdi)
		memset(bdi, 0, sizeof(*bdi));
		bdi->cluster_size = s->header.cluster_size;
		bdi->is_dirty = s->header.features & QED_F_NEED_CHECK;
		bdi->unallocated_blocks_are_zero = true;
		bdi->can_write_zeroes_with_unmap = true;
		return 0;
		}

block/vdi.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -331,6 +331,7 @@ static int vdi_get_info(BlockDriverState bs, BlockDriverInfo bdi)
		logout("\n");
		bdi->cluster_size = s->block_size;
		bdi->vm_state_offset = 0;
		bdi->unallocated_blocks_are_zero = true;
		return 0;
		}

block/vhdx.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -1049,6 +1049,9 @@ static int vhdx_get_info(BlockDriverState bs, BlockDriverInfo bdi)

		bdi->cluster_size = s->block_size;

		bdi->unallocated_blocks_are_zero =
		(s->params.data_bits & VHDX_PARAMS_HAS_PARENT) == 0;

		return 0;
		}

block/vpc.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -464,6 +464,7 @@ static int vpc_get_info(BlockDriverState bs, BlockDriverInfo bdi)
		bdi->cluster_size = s->block_size;
		}

		bdi->unallocated_blocks_are_zero = true;
		return 0;
		}