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block: Mark public read/write functions GRAPH_RDLOCK

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This adds GRAPH_RDLOCK annotations to declare that callers of
bdrv_co_pread*/pwrite*() 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: <20230203152202.49054-12-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 16:21:50 +01:00
parent 7b1fb72e2c
commit b9b10c35e5
31 changed files with 233 additions and 238 deletions
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7
block/qcow2-cluster.c
View file

@ -534,10 +534,9 @@ do_perform_cow_read(BlockDriverState *bs, uint64_t src_cluster_offset,
return 0;
}
static int coroutine_fn do_perform_cow_write(BlockDriverState *bs,
uint64_t cluster_offset,
unsigned offset_in_cluster,
QEMUIOVector *qiov)
static int coroutine_fn GRAPH_RDLOCK
do_perform_cow_write(BlockDriverState *bs, uint64_t cluster_offset,
unsigned offset_in_cluster, QEMUIOVector *qiov)
{
BDRVQcow2State *s = bs->opaque;
int ret;