diff options
| author | Kevin Wolf <kwolf@redhat.com> | 2023-10-27 17:53:21 +0200 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2023-11-07 19:14:19 +0100 |
| commit | 78a9c76eefae877e63591728234604310c51d88f (patch) | |
| tree | 08679e5fddc04ef8224686142754b16dc24a4038 /include/block | |
| parent | ec82cc41a79ffa8b1a2dee76a420a34a59f117c6 (diff) | |
block: Mark bdrv_cow_child() and callers GRAPH_RDLOCK
This adds GRAPH_RDLOCK annotations to declare that callers of
bdrv_cow_child() need to hold a reader lock for the graph because it
accesses bs->backing.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-ID: <20231027155333.420094-13-kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'include/block')
| -rw-r--r-- | include/block/block_int-io.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/include/block/block_int-io.h b/include/block/block_int-io.h index 17547a2dab..4a7cf2b4fd 100644 --- a/include/block/block_int-io.h +++ b/include/block/block_int-io.h @@ -130,14 +130,15 @@ bdrv_co_refresh_total_sectors(BlockDriverState *bs, int64_t hint); int co_wrapper_mixed_bdrv_rdlock bdrv_refresh_total_sectors(BlockDriverState *bs, int64_t hint); -BdrvChild *bdrv_cow_child(BlockDriverState *bs); +BdrvChild * GRAPH_RDLOCK bdrv_cow_child(BlockDriverState *bs); BdrvChild * GRAPH_RDLOCK bdrv_filter_child(BlockDriverState *bs); BdrvChild * GRAPH_RDLOCK bdrv_filter_or_cow_child(BlockDriverState *bs); BdrvChild * GRAPH_RDLOCK bdrv_primary_child(BlockDriverState *bs); BlockDriverState * GRAPH_RDLOCK bdrv_skip_filters(BlockDriverState *bs); BlockDriverState * GRAPH_RDLOCK bdrv_backing_chain_next(BlockDriverState *bs); -static inline BlockDriverState *bdrv_cow_bs(BlockDriverState *bs) +static inline BlockDriverState * GRAPH_RDLOCK +bdrv_cow_bs(BlockDriverState *bs) { IO_CODE(); return child_bs(bdrv_cow_child(bs)); |