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block: Mark bdrv_co_truncate() and callers GRAPH_RDLOCK

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This adds GRAPH_RDLOCK annotations to declare that callers of
bdrv_co_truncate() 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: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20230203152202.49054-4-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 16:21:42 +01:00
parent 32125b1460
commit c2b8e31516
11 changed files with 44 additions and 28 deletions
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7
include/block/block_int-common.h
View file

@ -677,9 +677,10 @@ struct BlockDriver {
* If @exact is true and this function fails but would succeed
* with @exact = false, it should return -ENOTSUP.
*/
int coroutine_fn (*bdrv_co_truncate)(BlockDriverState *bs, int64_t offset,
bool exact, PreallocMode prealloc,
BdrvRequestFlags flags, Error **errp);
int coroutine_fn GRAPH_RDLOCK_PTR (*bdrv_co_truncate)(
BlockDriverState *bs, int64_t offset, bool exact,
PreallocMode prealloc, BdrvRequestFlags flags, Error **errp);
int64_t coroutine_fn (*bdrv_co_getlength)(BlockDriverState *bs);
int64_t coroutine_fn (*bdrv_co_get_allocated_file_size)(
BlockDriverState *bs);