diff options
Diffstat (limited to 'block/copy-before-write.c')
| -rw-r--r-- | block/copy-before-write.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/block/copy-before-write.c b/block/copy-before-write.c index 8193d3a4cd..ad3b73cc4a 100644 --- a/block/copy-before-write.c +++ b/block/copy-before-write.c @@ -433,6 +433,8 @@ static int cbw_open(BlockDriverState *bs, QDict *options, int flags, return -EINVAL; } + GRAPH_RDLOCK_GUARD_MAINLOOP(); + ctx = bdrv_get_aio_context(bs); aio_context_acquire(ctx); |