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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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4
block/vpc.c
View file

@ -610,7 +610,7 @@ vpc_co_get_info(BlockDriverState *bs, BlockDriverInfo *bdi)
return 0;
}
static int coroutine_fn
static int coroutine_fn GRAPH_RDLOCK
vpc_co_preadv(BlockDriverState *bs, int64_t offset, int64_t bytes,
QEMUIOVector *qiov, BdrvRequestFlags flags)
{
@ -660,7 +660,7 @@ fail:
return ret;
}
static int coroutine_fn
static int coroutine_fn GRAPH_RDLOCK
vpc_co_pwritev(BlockDriverState *bs, int64_t offset, int64_t bytes,
QEMUIOVector *qiov, BdrvRequestFlags flags)
{