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block: Protect bs->children with graph_lock

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Almost all functions that access the child links already take the graph
lock now. Add locking to the remaining users and finally annotate the
struct field itself as protected by the graph lock.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-ID: <20230929145157.45443-22-kwolf@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Kevin Wolf 2023-09-29 16:51:56 +02:00
parent b59b466071
commit 680e0cc40c
4 changed files with 10 additions and 3 deletions
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3
block/replication.c
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@ -430,7 +430,8 @@ static void backup_job_completed(void *opaque, int ret)
backup_job_cleanup(bs);
}
static bool check_top_bs(BlockDriverState *top_bs, BlockDriverState *bs)
static bool GRAPH_RDLOCK
check_top_bs(BlockDriverState *top_bs, BlockDriverState *bs)
{
BdrvChild *child;