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block: Mark bdrv_get_parent_name() and callers GRAPH_RDLOCK

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This adds GRAPH_RDLOCK annotations to declare that callers of
bdrv_get_parent_name() need to hold a reader lock for the graph
because it accesses the parents list of a node.

For some places, we know that they will hold the lock, but we don't have
the GRAPH_RDLOCK annotations yet. In this case, add assume_graph_lock()
with a FIXME comment. These places will be removed once everything is
properly annotated.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-ID: <20230929145157.45443-13-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 16:51:47 +02:00
parent c0fc5123ad
commit 4026f1c4f3
17 changed files with 55 additions and 14 deletions
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2
include/block/block_int-io.h
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@ -99,7 +99,7 @@ BlockDriver *bdrv_probe_all(const uint8_t *buf, int buf_size,
*/
void bdrv_wakeup(BlockDriverState *bs);
const char *bdrv_get_parent_name(const BlockDriverState *bs);
const char * GRAPH_RDLOCK bdrv_get_parent_name(const BlockDriverState *bs);
bool blk_dev_has_tray(BlockBackend *blk);
bool blk_dev_is_tray_open(BlockBackend *blk);