[Qemu-devel] [PATCH v2 00/16] AioContext fine-grained locking, part 1 of 3, including bdrv_drain rewrite

[Paolo Bonzini <pbonzini@redhat.com>]

Now that the current dataplane failure has been isolated to an unwanted
reentrancy in virtio, I can post v2 of these patches.  Please review,
as I would like to get part 2 in QEMU 2.6 as well (I plan to send it out
tomorrow, since I hope there will be no comments on this one and I have
already tested both of them).

The changes from v1 are minor and all correspond to Fam's review (I've
pointed them out in the single patches - patch 2,5,7,9,13).

Paolo

Paolo Bonzini (16):
  block: make bdrv_start_throttled_reqs return void
  block: move restarting of throttled reqs to block/throttle-groups.c
  block: introduce bdrv_no_throttling_begin/end
  block: plug whole tree at once, introduce bdrv_io_unplugged_begin/end
  mirror: use bottom half to re-enter coroutine
  block: add BDS field to count in-flight requests
  block: change drain to look only at one child at a time
  blockjob: introduce .drain callback for jobs
  block: wait for all pending I/O when doing synchronous requests
  nfs: replace aio_poll with bdrv_drain
  sheepdog: disable dataplane
  aio: introduce aio_context_in_iothread
  block: only call aio_poll from iothread
  iothread: release AioContext around aio_poll
  qemu-thread: introduce QemuRecMutex
  aio: convert from RFifoLock to QemuRecMutex

 async.c                         |  28 +---
 block.c                         |   4 +-
 block/backup.c                  |   7 +
 block/io.c                      | 276 ++++++++++++++++++++++++----------------
 block/linux-aio.c               |  13 +-
 block/mirror.c                  |  38 +++++-
 block/nfs.c                     |  50 +++++---
 block/qed-table.c               |  16 +--
 block/raw-aio.h                 |   2 +-
 block/raw-posix.c               |  16 +--
 block/sheepdog.c                |  19 +++
 block/throttle-groups.c         |  20 +++
 blockjob.c                      |  16 ++-
 docs/multiple-iothreads.txt     |  40 +++---
 include/block/aio.h             |  13 +-
 include/block/block.h           |   3 +-
 include/block/block_int.h       |  22 +++-
 include/block/blockjob.h        |   7 +
 include/block/throttle-groups.h |   1 +
 include/qemu/rfifolock.h        |  54 --------
 include/qemu/thread-posix.h     |   6 +
 include/qemu/thread-win32.h     |  10 ++
 include/qemu/thread.h           |   3 +
 iothread.c                      |  20 +--
 stubs/Makefile.objs             |   1 +
 stubs/iothread.c                |   8 ++
 tests/.gitignore                |   1 -
 tests/Makefile                  |   2 -
 tests/qemu-iotests/060          |   8 +-
 tests/qemu-iotests/060.out      |   4 +-
 tests/test-aio.c                |  22 ++--
 tests/test-rfifolock.c          |  92 --------------
 util/Makefile.objs              |   1 -
 util/qemu-thread-posix.c        |  13 ++
 util/qemu-thread-win32.c        |  25 ++++
 util/rfifolock.c                |  78 ------------
 36 files changed, 461 insertions(+), 478 deletions(-)
 delete mode 100644 include/qemu/rfifolock.h
 create mode 100644 stubs/iothread.c
 delete mode 100644 tests/test-rfifolock.c
 delete mode 100644 util/rfifolock.c

-- 
1.8.3.1