[PULL 00/34] NBD patches for 2021-06-15

[Eric Blake]

The following changes since commit 1ea06abceec61b6f3ab33dadb0510b6e09fb61e2:

  Merge remote-tracking branch 
'remotes/berrange-gitlab/tags/misc-fixes-pull-request' into staging (2021-06-14 
15:59:13 +0100)

are available in the Git repository at:

  https://repo.or.cz/qemu/ericb.git tags/pull-nbd-2021-06-15

for you to fetch changes up to 788b68b57dea4ddd0038f73b96c147eb406c386d:

  block/nbd: safer transition to receiving request (2021-06-15 15:42:33 -0500)

----------------------------------------------------------------
nbd patches for 2021-06-15

- bug fixes in coroutine aio context handling
- rework NBD client connection logic to perform more work in coroutine
rather than blocking main loop

----------------------------------------------------------------
Paolo Bonzini (2):
      async: the main AioContext is only "current" if under the BQL
      tests: cover aio_co_enter from a worker thread without BQL taken

Roman Kagan (2):
      block/nbd: fix channel object leak
      block/nbd: ensure ->connection_thread is always valid

Vladimir Sementsov-Ogievskiy (30):
      co-queue: drop extra coroutine_fn marks
      block/nbd: fix how state is cleared on nbd_open() failure paths
      block/nbd: connect_thread_func(): do qio_channel_set_delay(false)
      qemu-sockets: introduce socket_address_parse_named_fd()
      block/nbd: call socket_address_parse_named_fd() in advance
      block/nbd: nbd_client_handshake(): fix leak of s->ioc
      block/nbd: BDRVNBDState: drop unused connect_err and connect_status
      block/nbd: simplify waking of nbd_co_establish_connection()
      block/nbd: drop thr->state
      block/nbd: bs-independent interface for nbd_co_establish_connection()
      block/nbd: make nbd_co_establish_connection_cancel() bs-independent
      block/nbd: rename NBDConnectThread to NBDClientConnection
      block/nbd: introduce nbd_client_connection_new()
      block/nbd: introduce nbd_client_connection_release()
      nbd: move connection code from block/nbd to nbd/client-connection
      nbd/client-connection: use QEMU_LOCK_GUARD
      nbd/client-connection: add possibility of negotiation
      nbd/client-connection: implement connection retry
      nbd/client-connection: shutdown connection on release
      block/nbd: split nbd_handle_updated_info out of nbd_client_handshake()
      block/nbd: use negotiation of NBDClientConnection
      block/nbd: don't touch s->sioc in nbd_teardown_connection()
      block/nbd: drop BDRVNBDState::sioc
      nbd/client-connection: return only one io channel
      block-coroutine-wrapper: allow non bdrv_ prefix
      block/nbd: split nbd_co_do_establish_connection out of 
nbd_reconnect_attempt
      nbd/client-connection: add option for non-blocking connection attempt
      block/nbd: reuse nbd_co_do_establish_connection() in nbd_open()
      block/nbd: add nbd_client_connected() helper
      block/nbd: safer transition to receiving request

 scripts/block-coroutine-wrapper.py |   7 +-
 block/coroutines.h                 |   6 +
 include/block/aio.h                |   5 +-
 include/block/nbd.h                |  18 ++
 include/qemu/coroutine.h           |   6 +-
 include/qemu/sockets.h             |  11 +
 block/nbd.c                        | 585 ++++++++-----------------------------
 iothread.c                         |   9 +-
 nbd/client-connection.c            | 385 ++++++++++++++++++++++++
 stubs/iothread-lock.c              |   2 +-
 stubs/iothread.c                   |   8 -
 tests/unit/iothread.c              |   9 +-
 tests/unit/test-aio.c              |  37 +++
 util/async.c                       |  20 ++
 util/main-loop.c                   |   1 +
 util/qemu-sockets.c                |  19 ++
 nbd/meson.build                    |   1 +
 stubs/meson.build                  |   1 -
 18 files changed, 639 insertions(+), 491 deletions(-)
 create mode 100644 nbd/client-connection.c
 delete mode 100644 stubs/iothread.c

-- 
2.31.1