Merge remote-tracking branch 'kwolf/tags/for-upstream' into staging

Block layer patches

# gpg: Signature made Thu 11 May 2017 10:31:37 AM EDT
# gpg:                using RSA key 0x7F09B272C88F2FD6
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>"
# Primary key fingerprint: DC3D EB15 9A9A F95D 3D74  56FE 7F09 B272 C88F 2FD6

* kwolf/tags/for-upstream: (58 commits)
  MAINTAINERS: Add qemu-progress to the block layer
  qcow2: Discard/zero clusters by byte count
  qcow2: Assert that cluster operations are aligned
  qcow2: Optimize write zero of unaligned tail cluster
  iotests: Add test 179 to cover write zeroes with unmap
  iotests: Improve _filter_qemu_img_map
  qcow2: Optimize zero_single_l2() to minimize L2 churn
  qcow2: Make distinction between zero cluster types obvious
  qcow2: Name typedef for cluster type
  qcow2: Correctly report status of preallocated zero clusters
  block: Update comments on BDRV_BLOCK_* meanings
  qcow2: Use consistent switch indentation
  qcow2: Nicer variable names in qcow2_update_snapshot_refcount()
  tests: Add coverage for recent block geometry fixes
  blkdebug: Add ability to override unmap geometries
  blkdebug: Simplify override logic
  blkdebug: Add pass-through write_zero and discard support
  blkdebug: Refactor error injection
  blkdebug: Sanity check block layer guarantees
  qemu-io: Switch 'map' output to byte-based reporting
  ...

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

1 files changed, 6 insertions, 12 deletions

diff --git a/qmp.c b/qmp.c
index ab74cd729d..f656940769 100644
--- a/qmp.c
+++ b/qmp.c
@@ -196,18 +196,12 @@ void qmp_cont(Error **errp)
     }
 
     /* Continuing after completed migration. Images have been inactivated to
-     * allow the destination to take control. Need to get control back now. */
-    if (runstate_check(RUN_STATE_FINISH_MIGRATE) ||
-        runstate_check(RUN_STATE_POSTMIGRATE))
-    {
-        bdrv_invalidate_cache_all(&local_err);
-        if (local_err) {
-            error_propagate(errp, local_err);
-            return;
-        }
-    }
-
-    blk_resume_after_migration(&local_err);
+     * allow the destination to take control. Need to get control back now.
+     *
+     * If there are no inactive block nodes (e.g. because the VM was just
+     * paused rather than completing a migration), bdrv_inactivate_all() simply
+     * doesn't do anything. */
+    bdrv_invalidate_cache_all(&local_err);
     if (local_err) {
         error_propagate(errp, local_err);
         return;