Merge remote-tracking branch 'remotes/xanclic/tags/pull-block-2018-09-25' into staging

Block layer patches:
- Drain fixes
- node-name parameters for block-commit
- Refactor block jobs to use transactional callbacks for exiting

# gpg: Signature made Tue 25 Sep 2018 16:12:44 BST
# gpg:                using RSA key F407DB0061D5CF40
# gpg: Good signature from "Max Reitz <mreitz@redhat.com>"
# Primary key fingerprint: 91BE B60A 30DB 3E88 57D1  1829 F407 DB00 61D5 CF40

* remotes/xanclic/tags/pull-block-2018-09-25: (42 commits)
  test-bdrv-drain: Test draining job source child and parent
  block: Use a single global AioWait
  test-bdrv-drain: Fix outdated comments
  test-bdrv-drain: AIO_WAIT_WHILE() in job .commit/.abort
  job: Avoid deadlocks in job_completed_txn_abort()
  test-bdrv-drain: Test nested poll in bdrv_drain_poll_top_level()
  block: Remove aio_poll() in bdrv_drain_poll variants
  blockjob: Lie better in child_job_drained_poll()
  block-backend: Decrease in_flight only after callback
  block-backend: Fix potential double blk_delete()
  block-backend: Add .drained_poll callback
  block: Add missing locking in bdrv_co_drain_bh_cb()
  test-bdrv-drain: Test AIO_WAIT_WHILE() in completion callback
  job: Use AIO_WAIT_WHILE() in job_finish_sync()
  test-blockjob: Acquire AioContext around job_cancel_sync()
  test-bdrv-drain: Drain with block jobs in an I/O thread
  aio-wait: Increase num_waiters even in home thread
  blockjob: Wake up BDS when job becomes idle
  job: Fix missing locking due to mismerge
  job: Fix nested aio_poll() hanging in job_txn_apply
  ...

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

1 files changed, 86 insertions, 18 deletions

diff --git a/qapi/block-core.json b/qapi/block-core.json
index 4c7a37a..ac3b48e 100644
--- a/qapi/block-core.json
+++ b/qapi/block-core.json
@@ -1272,13 +1272,14 @@
 #                   a different block device than @device).
 #
 # @auto-finalize: When false, this job will wait in a PENDING state after it has
-#                 finished its work, waiting for @block-job-finalize.
-#                 When true, this job will automatically perform its abort or
-#                 commit actions.
+#                 finished its work, waiting for @block-job-finalize before
+#                 making any block graph changes.
+#                 When true, this job will automatically
+#                 perform its abort or commit actions.
 #                 Defaults to true. (Since 2.12)
 #
 # @auto-dismiss: When false, this job will wait in a CONCLUDED state after it
-#                has completed ceased all work, and wait for @block-job-dismiss.
+#                has completely ceased all work, and awaits @block-job-dismiss.
 #                When true, this job will automatically disappear from the query
 #                list without user intervention.
 #                Defaults to true. (Since 2.12)
@@ -1327,13 +1328,14 @@
 #                   a different block device than @device).
 #
 # @auto-finalize: When false, this job will wait in a PENDING state after it has
-#                 finished its work, waiting for @block-job-finalize.
-#                 When true, this job will automatically perform its abort or
-#                 commit actions.
+#                 finished its work, waiting for @block-job-finalize before
+#                 making any block graph changes.
+#                 When true, this job will automatically
+#                 perform its abort or commit actions.
 #                 Defaults to true. (Since 2.12)
 #
 # @auto-dismiss: When false, this job will wait in a CONCLUDED state after it
-#                has completed ceased all work, and wait for @block-job-dismiss.
+#                has completely ceased all work, and awaits @block-job-dismiss.
 #                When true, this job will automatically disappear from the query
 #                list without user intervention.
 #                Defaults to true. (Since 2.12)
@@ -1455,12 +1457,23 @@
 #
 # @device:  the device name or node-name of a root node
 #
-# @base:   The file name of the backing image to write data into.
-#                    If not specified, this is the deepest backing image.
+# @base-node: The node name of the backing image to write data into.
+#             If not specified, this is the deepest backing image.
+#             (since: 3.1)
 #
-# @top:    The file name of the backing image within the image chain,
-#                    which contains the topmost data to be committed down. If
-#                    not specified, this is the active layer.
+# @base: Same as @base-node, except that it is a file name rather than a node
+#        name. This must be the exact filename string that was used to open the
+#        node; other strings, even if addressing the same file, are not
+#        accepted (deprecated, use @base-node instead)
+#
+# @top-node: The node name of the backing image within the image chain
+#            which contains the topmost data to be committed down. If
+#            not specified, this is the active layer. (since: 3.1)
+#
+# @top: Same as @top-node, except that it is a file name rather than a node
+#       name. This must be the exact filename string that was used to open the
+#       node; other strings, even if addressing the same file, are not
+#       accepted (deprecated, use @base-node instead)
 #
 # @backing-file:  The backing file string to write into the overlay
 #                           image of 'top'.  If 'top' is the active layer,
@@ -1498,6 +1511,19 @@
 #                    above @top. If this option is not given, a node name is
 #                    autogenerated. (Since: 2.9)
 #
+# @auto-finalize: When false, this job will wait in a PENDING state after it has
+#                 finished its work, waiting for @block-job-finalize before
+#                 making any block graph changes.
+#                 When true, this job will automatically
+#                 perform its abort or commit actions.
+#                 Defaults to true. (Since 3.1)
+#
+# @auto-dismiss: When false, this job will wait in a CONCLUDED state after it
+#                has completely ceased all work, and awaits @block-job-dismiss.
+#                When true, this job will automatically disappear from the query
+#                list without user intervention.
+#                Defaults to true. (Since 3.1)
+#
 # Returns: Nothing on success
 #          If @device does not exist, DeviceNotFound
 #          Any other error returns a GenericError.
@@ -1513,9 +1539,11 @@
 #
 ##
 { 'command': 'block-commit',
-  'data': { '*job-id': 'str', 'device': 'str', '*base': 'str', '*top': 'str',
+  'data': { '*job-id': 'str', 'device': 'str', '*base-node': 'str',
+            '*base': 'str', '*top-node': 'str', '*top': 'str',
             '*backing-file': 'str', '*speed': 'int',
-            '*filter-node-name': 'str' } }
+            '*filter-node-name': 'str',
+            '*auto-finalize': 'bool', '*auto-dismiss': 'bool' } }
 
 ##
 # @drive-backup:
@@ -1715,6 +1743,18 @@
 # @copy-mode: when to copy data to the destination; defaults to 'background'
 #             (Since: 3.0)
 #
+# @auto-finalize: When false, this job will wait in a PENDING state after it has
+#                 finished its work, waiting for @block-job-finalize before
+#                 making any block graph changes.
+#                 When true, this job will automatically
+#                 perform its abort or commit actions.
+#                 Defaults to true. (Since 3.1)
+#
+# @auto-dismiss: When false, this job will wait in a CONCLUDED state after it
+#                has completely ceased all work, and awaits @block-job-dismiss.
+#                When true, this job will automatically disappear from the query
+#                list without user intervention.
+#                Defaults to true. (Since 3.1)
 # Since: 1.3
 ##
 { 'struct': 'DriveMirror',
@@ -1724,7 +1764,8 @@
             '*speed': 'int', '*granularity': 'uint32',
             '*buf-size': 'int', '*on-source-error': 'BlockdevOnError',
             '*on-target-error': 'BlockdevOnError',
-            '*unmap': 'bool', '*copy-mode': 'MirrorCopyMode' } }
+            '*unmap': 'bool', '*copy-mode': 'MirrorCopyMode',
+            '*auto-finalize': 'bool', '*auto-dismiss': 'bool' } }
 
 ##
 # @BlockDirtyBitmap:
@@ -1990,6 +2031,18 @@
 # @copy-mode: when to copy data to the destination; defaults to 'background'
 #             (Since: 3.0)
 #
+# @auto-finalize: When false, this job will wait in a PENDING state after it has
+#                 finished its work, waiting for @block-job-finalize before
+#                 making any block graph changes.
+#                 When true, this job will automatically
+#                 perform its abort or commit actions.
+#                 Defaults to true. (Since 3.1)
+#
+# @auto-dismiss: When false, this job will wait in a CONCLUDED state after it
+#                has completely ceased all work, and awaits @block-job-dismiss.
+#                When true, this job will automatically disappear from the query
+#                list without user intervention.
+#                Defaults to true. (Since 3.1)
 # Returns: nothing on success.
 #
 # Since: 2.6
@@ -2011,7 +2064,8 @@
             '*buf-size': 'int', '*on-source-error': 'BlockdevOnError',
             '*on-target-error': 'BlockdevOnError',
             '*filter-node-name': 'str',
-            '*copy-mode': 'MirrorCopyMode' } }
+            '*copy-mode': 'MirrorCopyMode',
+            '*auto-finalize': 'bool', '*auto-dismiss': 'bool' } }
 
 ##
 # @block_set_io_throttle:
@@ -2277,6 +2331,19 @@
 #            'stop' and 'enospc' can only be used if the block device
 #            supports io-status (see BlockInfo).  Since 1.3.
 #
+# @auto-finalize: When false, this job will wait in a PENDING state after it has
+#                 finished its work, waiting for @block-job-finalize before
+#                 making any block graph changes.
+#                 When true, this job will automatically
+#                 perform its abort or commit actions.
+#                 Defaults to true. (Since 3.1)
+#
+# @auto-dismiss: When false, this job will wait in a CONCLUDED state after it
+#                has completely ceased all work, and awaits @block-job-dismiss.
+#                When true, this job will automatically disappear from the query
+#                list without user intervention.
+#                Defaults to true. (Since 3.1)
+#
 # Returns: Nothing on success. If @device does not exist, DeviceNotFound.
 #
 # Since: 1.1
@@ -2292,7 +2359,8 @@
 { 'command': 'block-stream',
   'data': { '*job-id': 'str', 'device': 'str', '*base': 'str',
             '*base-node': 'str', '*backing-file': 'str', '*speed': 'int',
-            '*on-error': 'BlockdevOnError' } }
+            '*on-error': 'BlockdevOnError',
+            '*auto-finalize': 'bool', '*auto-dismiss': 'bool' } }
 
 ##
 # @block-job-set-speed: