block: add bdrv_query_stats

qmp_query_blockstat cannot have errors, remove the Error argument and
create a new public function bdrv_query_stats out of it.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/block.h b/block.h
index 2ede16d638..ed4b90d64c 100644
--- a/block.h
+++ b/block.h
@@ -314,6 +314,7 @@ void bdrv_get_backing_filename(BlockDriverState *bs,
 void bdrv_get_full_backing_filename(BlockDriverState *bs,
                                     char *dest, size_t sz);
 BlockInfo *bdrv_query_info(BlockDriverState *s);
+BlockStats *bdrv_query_stats(const BlockDriverState *bs);
 int bdrv_can_snapshot(BlockDriverState *bs);
 int bdrv_is_snapshot(BlockDriverState *bs);
 BlockDriverState *bdrv_snapshots(void);