block: mark bdrv_parent_change_aio_context() GRAPH_RDLOCK

This is a small step in preparation to mark bdrv_drained_begin() as
GRAPH_UNLOCKED. More concretely, it allows marking the
change_aio_ctx() callback GRAPH_RDLOCK_PTR, which is the next step.

Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Message-ID: <20250530151125.955508-6-f.ebner@proxmox.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/block.c b/block.c
index fa55dfba68..7207978e53 100644
--- a/block.c
+++ b/block.c
@@ -7575,10 +7575,10 @@ typedef struct BdrvStateSetAioContext {
     BlockDriverState *bs;
 } BdrvStateSetAioContext;
 
-static bool bdrv_parent_change_aio_context(BdrvChild *c, AioContext *ctx,
-                                           GHashTable *visited,
-                                           Transaction *tran,
-                                           Error **errp)
+static bool GRAPH_RDLOCK
+bdrv_parent_change_aio_context(BdrvChild *c, AioContext *ctx,
+                               GHashTable *visited, Transaction *tran,
+                               Error **errp)
 {
     GLOBAL_STATE_CODE();
     if (g_hash_table_contains(visited, c)) {