diff options
Diffstat (limited to 'blockjob.c')
| -rw-r--r-- | blockjob.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/blockjob.c b/blockjob.c index 5b24de356d..7920f6e500 100644 --- a/blockjob.c +++ b/blockjob.c @@ -248,8 +248,10 @@ int block_job_add_bdrv(BlockJob *job, const char *name, BlockDriverState *bs, } aio_context_acquire(ctx); } + bdrv_graph_wrlock(bs); c = bdrv_root_attach_child(bs, name, &child_job, 0, perm, shared_perm, job, errp); + bdrv_graph_wrunlock(); if (need_context_ops) { aio_context_release(ctx); if (job->job.aio_context != qemu_get_aio_context()) { |