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block: Mark bdrv_apply_auto_read_only() and callers GRAPH_RDLOCK
This adds GRAPH_RDLOCK annotations to declare that callers of bdrv_apply_auto_read_only() need to hold a reader lock for the graph because it calls bdrv_can_set_read_only(), which indirectly accesses the parents list of a node. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Message-ID: <20230929145157.45443-19-kwolf@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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10 changed files with 22 additions and 5 deletions
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@ -163,8 +163,10 @@ bdrv_is_allocated_above(BlockDriverState *bs, BlockDriverState *base,
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int coroutine_fn GRAPH_RDLOCK
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bdrv_co_is_zero_fast(BlockDriverState *bs, int64_t offset, int64_t bytes);
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int bdrv_apply_auto_read_only(BlockDriverState *bs, const char *errmsg,
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Error **errp);
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int GRAPH_RDLOCK
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bdrv_apply_auto_read_only(BlockDriverState *bs, const char *errmsg,
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Error **errp);
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bool bdrv_is_read_only(BlockDriverState *bs);
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bool bdrv_is_writable(BlockDriverState *bs);
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bool bdrv_is_sg(BlockDriverState *bs);
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