Merge tag 'pull-block-2022-03-29' of https://gitlab.com/hreitz/qemu into staging

Block patches for 7.0-rc2:
- Disable GLOBAL_STATE_CODE() assertion for the 7.0 release: We got
  another bug report for this, and we do not have the time to
  investigate before 7.0, so disable the assertion for the release, to
  re-enable and continue investigation in the 7.1 cycle

- stream job fix (regarding interaction with concurrent block jobs)

- iotests fixes

# gpg: Signature made Tue 29 Mar 2022 15:55:33 BST
# gpg:                using RSA key CB62D7A0EE3829E45F004D34A1FA40D098019CDF
# gpg:                issuer "hreitz@redhat.com"
# gpg: Good signature from "Hanna Reitz <hreitz@redhat.com>" [marginal]
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg:          It is not certain that the signature belongs to the owner.
# Primary key fingerprint: CB62 D7A0 EE38 29E4 5F00  4D34 A1FA 40D0 9801 9CDF

* tag 'pull-block-2022-03-29' of https://gitlab.com/hreitz/qemu:
  iotests: Fix status checks
  block/stream: Drain subtree around graph change
  main-loop: Disable GLOBAL_STATE_CODE() assertions
  iotests: update test owner contact information

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 14 insertions, 1 deletions

diff --git a/block/stream.c b/block/stream.c
index 3acb59fe6a..694709bd25 100644
--- a/block/stream.c
+++ b/block/stream.c
@@ -64,7 +64,13 @@ static int stream_prepare(Job *job)
     bdrv_cor_filter_drop(s->cor_filter_bs);
     s->cor_filter_bs = NULL;
 
+    bdrv_subtree_drained_begin(s->above_base);
+
     base = bdrv_filter_or_cow_bs(s->above_base);
+    if (base) {
+        bdrv_ref(base);
+    }
+
     unfiltered_base = bdrv_skip_filters(base);
 
     if (bdrv_cow_child(unfiltered_bs)) {
@@ -75,14 +81,21 @@ static int stream_prepare(Job *job)
                 base_fmt = unfiltered_base->drv->format_name;
             }
         }
+
         bdrv_set_backing_hd(unfiltered_bs, base, &local_err);
         ret = bdrv_change_backing_file(unfiltered_bs, base_id, base_fmt, false);
         if (local_err) {
             error_report_err(local_err);
-            return -EPERM;
+            ret = -EPERM;
+            goto out;
         }
     }
 
+out:
+    if (base) {
+        bdrv_unref(base);
+    }
+    bdrv_subtree_drained_end(s->above_base);
     return ret;
 }