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block: GRAPH_RDLOCK for functions only called by co_wrappers

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The generated coroutine wrappers already take care to take the lock in
the non-coroutine path, and assume that the lock is already taken in the
coroutine path.

The only thing we need to do for the wrapped function is adding the
GRAPH_RDLOCK annotation. Doing so also allows us to mark the
corresponding callbacks in BlockDriver as GRAPH_RDLOCK_PTR.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20221207131838.239125-19-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 2022-12-07 14:18:38 +01:00
parent 90830f5950
commit 1b3ff9feb9
4 changed files with 23 additions and 18 deletions
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2
block/io.c
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@ -2697,6 +2697,7 @@ bdrv_co_readv_vmstate(BlockDriverState *bs, QEMUIOVector *qiov, int64_t pos)
BlockDriverState *child_bs = bdrv_primary_bs(bs);
int ret;
IO_CODE();
assert_bdrv_graph_readable();
ret = bdrv_check_qiov_request(pos, qiov->size, qiov, 0, NULL);
if (ret < 0) {
@ -2729,6 +2730,7 @@ bdrv_co_writev_vmstate(BlockDriverState *bs, QEMUIOVector *qiov, int64_t pos)
BlockDriverState *child_bs = bdrv_primary_bs(bs);
int ret;
IO_CODE();
assert_bdrv_graph_readable();
ret = bdrv_check_qiov_request(pos, qiov->size, qiov, 0, NULL);
if (ret < 0) {