diff options
| -rw-r--r-- | block/qapi.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/block/qapi.c b/block/qapi.c index c84147849d..71f2751257 100644 --- a/block/qapi.c +++ b/block/qapi.c @@ -604,8 +604,8 @@ static void bdrv_query_blk_stats(BlockDeviceStats *ds, BlockBackend *blk) = bdrv_latency_histogram_stats(&hgram[BLOCK_ACCT_FLUSH]); } -static BlockStats *bdrv_query_bds_stats(BlockDriverState *bs, - bool blk_level) +static BlockStats * GRAPH_RDLOCK +bdrv_query_bds_stats(BlockDriverState *bs, bool blk_level) { BdrvChild *parent_child; BlockDriverState *filter_or_cow_bs; @@ -713,6 +713,8 @@ BlockStatsList *qmp_query_blockstats(bool has_query_nodes, BlockBackend *blk; BlockDriverState *bs; + GRAPH_RDLOCK_GUARD_MAINLOOP(); + /* Just to be safe if query_nodes is not always initialized */ if (has_query_nodes && query_nodes) { for (bs = bdrv_next_node(NULL); bs; bs = bdrv_next_node(bs)) { |