[PULL 19/28] mirror: Require GRAPH_RDLOCK for accessing a node's parent list

[Kevin Wolf]

This adds GRAPH_RDLOCK annotations to declare that functions accessing
the parent list of a node need to hold a reader lock for the graph. As
it happens, they already do.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20230504115750.54437-13-kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
 block/mirror.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/block/mirror.c b/block/mirror.c
index 80fa345071..b5c4ae31f3 100644
--- a/block/mirror.c
+++ b/block/mirror.c
@@ -1416,7 +1416,7 @@ static MirrorOp *coroutine_fn 
active_write_prepare(MirrorBlockJob *s,
     return op;
 }
 
-static void coroutine_fn active_write_settle(MirrorOp *op)
+static void coroutine_fn GRAPH_RDLOCK active_write_settle(MirrorOp *op)
 {
     uint64_t start_chunk = op->offset / op->s->granularity;
     uint64_t end_chunk = DIV_ROUND_UP(op->offset + op->bytes,
-- 
2.40.1