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block: Mark bdrv_(un)register_buf() GRAPH_RDLOCK

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

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20230203152202.49054-21-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 16:21:59 +01:00
parent 79a292e5ec
commit d9249c253c
2 changed files with 14 additions and 7 deletions
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7
include/block/block_int-common.h
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@ -445,9 +445,10 @@ struct BlockDriver {
*
* Returns: true on success, false on failure
*/
bool (*bdrv_register_buf)(BlockDriverState *bs, void *host, size_t size,
Error **errp);
void (*bdrv_unregister_buf)(BlockDriverState *bs, void *host, size_t size);
bool GRAPH_RDLOCK_PTR (*bdrv_register_buf)(
BlockDriverState *bs, void *host, size_t size, Error **errp);
void GRAPH_RDLOCK_PTR (*bdrv_unregister_buf)(
BlockDriverState *bs, void *host, size_t size);
/*
* This field is modified only under the BQL, and is part of