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block: Mark bdrv_co_block_status() and callers GRAPH_RDLOCK

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This adds GRAPH_RDLOCK annotations to declare that callers of
bdrv_co_block_status() need to hold a reader lock for the graph.

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: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20230203152202.49054-5-kwolf@redhat.com>
Reviewed-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Kevin Wolf 2023-02-03 16:21:43 +01:00
parent c2b8e31516
commit 7ff9579e60
14 changed files with 81 additions and 62 deletions
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3
include/block/block_int-common.h
View file

@ -606,7 +606,8 @@ struct BlockDriver {
* *pnum value for the block-status cache on protocol nodes, prior
* to clamping *pnum for return to its caller.
*/
int coroutine_fn (*bdrv_co_block_status)(BlockDriverState *bs,
int coroutine_fn GRAPH_RDLOCK_PTR (*bdrv_co_block_status)(
BlockDriverState *bs,
bool want_zero, int64_t offset, int64_t bytes, int64_t *pnum,
int64_t *map, BlockDriverState **file);