[PATCH 0/6] block: bug fixes in preparation of AioContext removal

[Emanuele Giuseppe Esposito]

This serie aims to remove and clean up some bugs that came up
when trying to replace the AioContext lock and still protect
BlockDriverState fields.

They were part of the serie "Removal of Aiocontext lock
through drains: protect bdrv_replace_child_noperm", but since
that serie is still a work in progress and these fixes are
pretty much independent, I split that in two separate series.

This serie is based on "job: replace AioContext lock with job_mutex"

Based-on: <20220208143513.1077229-1-eesposit@redhat.com>

Emanuele Giuseppe Esposito (6):
  block/io.c: fix bdrv_child_cb_drained_begin invocations from a
    coroutine
  block.c: bdrv_replace_child_noperm: first remove the child, and then
    call ->detach()
  block.c: bdrv_replace_child_noperm: first call ->attach(), and then
    add child
  test-bdrv-drain.c: adapt test to the coming subtree drains
  test-bdrv-drain.c: remove test_detach_by_parent_cb()
  jobs: ensure sleep in job_sleep_ns is fully performed

 block.c                      | 18 +++++++-----
 block/io.c                   |  7 ++++-
 include/block/block-io.h     |  8 ++++--
 job.c                        | 19 +++++++------
 tests/qemu-iotests/030       |  2 +-
 tests/qemu-iotests/151       |  4 +--
 tests/unit/test-bdrv-drain.c | 53 ++++++++++++------------------------
 tests/unit/test-blockjob.c   |  2 +-
 8 files changed, 55 insertions(+), 58 deletions(-)

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2.31.1