Am 16.10.2020 um 19:10 hat Vladimir Sementsov-Ogievskiy geschrieben:
> Now bdrv_append returns status and we can drop all the local_err things
> around it.
>
> Signed-off-by: Vladimir Sementsov-Ogievskiy <[email protected]>
> Reviewed-by: Greg Kurz <[email protected]>
> Reviewed-by: Alberto Garcia <[email protected]>
> ---
> block.c | 5 +----
> block/backup-top.c | 20 ++++++++------------
> block/commit.c | 5 +----
> block/mirror.c | 6 ++----
> blockdev.c | 4 +---
> tests/test-bdrv-graph-mod.c | 6 +++---
> 6 files changed, 16 insertions(+), 30 deletions(-)
>
> diff --git a/block.c b/block.c
> index b05fbff42d..7b6818c681 100644
> --- a/block.c
> +++ b/block.c
> @@ -3161,7 +3161,6 @@ static BlockDriverState
> *bdrv_append_temp_snapshot(BlockDriverState *bs,
> int64_t total_size;
> QemuOpts *opts = NULL;
> BlockDriverState *bs_snapshot = NULL;
> - Error *local_err = NULL;
> int ret;
>
> /* if snapshot, we create a temporary backing file and open it
> @@ -3208,9 +3207,7 @@ static BlockDriverState
> *bdrv_append_temp_snapshot(BlockDriverState *bs,
> * order to be able to return one, we have to increase
> * bs_snapshot's refcount here */
> bdrv_ref(bs_snapshot);
> - bdrv_append(bs_snapshot, bs, &local_err);
> - if (local_err) {
> - error_propagate(errp, local_err);
> + if (bdrv_append(bs_snapshot, bs, errp) < 0) {
We generally avoid calling functions with side effects inside a
comparison. Let's use the usual pattern:
ret = bdrv_append(bs_snapshot, bs, errp);
if (ret < 0) {
...
}
(I mention it only once, but there are multiple instances in this
patch.)
> bs_snapshot = NULL;
> goto out;
> }
> diff --git a/tests/test-bdrv-graph-mod.c b/tests/test-bdrv-graph-mod.c
> index 8cff13830e..2b71601c24 100644
> --- a/tests/test-bdrv-graph-mod.c
> +++ b/tests/test-bdrv-graph-mod.c
> @@ -101,7 +101,7 @@ static BlockDriverState *pass_through_node(const char
> *name)
> */
> static void test_update_perm_tree(void)
> {
> - Error *local_err = NULL;
> + int ret;
>
> BlockBackend *root = blk_new(qemu_get_aio_context(),
> BLK_PERM_WRITE | BLK_PERM_CONSISTENT_READ,
> @@ -114,8 +114,8 @@ static void test_update_perm_tree(void)
> bdrv_attach_child(filter, bs, "child", &child_of_bds,
> BDRV_CHILD_FILTERED | BDRV_CHILD_PRIMARY,
> &error_abort);
>
> - bdrv_append(filter, bs, &local_err);
> - error_free_or_abort(&local_err);
> + ret = bdrv_append(filter, bs, NULL);
> + assert(ret < 0);
Usually, test cases use g_assert_cmpint() which prints the expected and
actual value if it fails.
Kevin
