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block: use return status of bdrv_append()

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Now bdrv_append returns status and we can drop all the local_err things
around it.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Message-Id: <20210202124956.63146-3-vsementsov@virtuozzo.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
This commit is contained in:
Vladimir Sementsov-Ogievskiy
2021-02-02 15:49:44 +03:00
committed by Eric Blake
parent a1e708fcda
commit 934aee14d3
6 changed files with 23 additions and 30 deletions
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6
blockdev.c
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@@ -1432,6 +1432,7 @@ typedef struct ExternalSnapshotState {
static void external_snapshot_prepare(BlkActionState *common,
Error **errp)
{
int ret;
int flags = 0;
QDict *options = NULL;
Error *local_err = NULL;
@@ -1591,9 +1592,8 @@ static void external_snapshot_prepare(BlkActionState *common,
* can fail, so we need to do it in .prepare; undoing it for abort is
* always possible. */
bdrv_ref(state->new_bs);
bdrv_append(state->new_bs, state->old_bs, &local_err);
if (local_err) {
error_propagate(errp, local_err);
ret = bdrv_append(state->new_bs, state->old_bs, errp);
if (ret < 0) {
goto out;
}
state->overlay_appended = true;