[PATCH v2 00/14] block: Move more functions to coroutines

[Kevin Wolf]

This series converts some IO_CODE() functions to coroutine_fn because
they access the graph and will need to hold the graph lock in the
future. IO_CODE() functions can be called from iothreads, so taking the
graph lock requires the function to run in coroutine context.

Pretty much all of the changes in this series were posted by Emanuele
before as part of "Protect the block layer with a rwlock: part 3". The
major difference is that in the old version, the patches did two things
at once: Converting functions to coroutine_fn, and adding the locking to
them. This series does only the coroutine conversion. The locking part
will be in another series which now comes with TSA annotations and makes
the locking related changes big enough to have separate patches.

v2:
- In each patch converting a BlockDriver callback to be called in
  coroutine, also immediately rename it and its implementation to
  include co_ in its name, as well as mark the implementations
  coroutine_fn [Vladimir]
- Moved bdrv_is_inserted() earlier in the series because
  raw_is_inserted() calls raw_getlength(), so it needs to be converted
  first to avoid calling a coroutine_fn from a non-coroutine_fn in an
  intermediate state.
- The final patch only renames bdrv_load/save_vmstate() any more, which
  was already converted to coroutine_fn earlier.
- Since pretty much every patch was touched in this, I refrained from
  picking up any Reviewed-by for v1

Emanuele Giuseppe Esposito (14):
  block-coroutine-wrapper: support void functions
  block: Convert bdrv_io_plug() to co_wrapper
  block: Convert bdrv_io_unplug() to co_wrapper
  block: Convert bdrv_is_inserted() to co_wrapper
  block: Rename refresh_total_sectors to bdrv_refresh_total_sectors
  block: Convert bdrv_refresh_total_sectors() to co_wrapper_mixed
  block-backend: use bdrv_getlength instead of blk_getlength
  block: use bdrv_co_refresh_total_sectors when possible
  block: Convert bdrv_get_allocated_file_size() to co_wrapper
  block: Convert bdrv_get_info() to co_wrapper_mixed
  block: Convert bdrv_eject() to co_wrapper
  block: Convert bdrv_lock_medium() to co_wrapper
  block: Convert bdrv_debug_event() to co_wrapper_mixed
  block: Rename bdrv_load/save_vmstate() to bdrv_co_load/save_vmstate()

 include/block/block-io.h           |  36 +++++++---
 include/block/block_int-common.h   |  26 ++++---
 include/block/block_int-io.h       |   5 +-
 include/sysemu/block-backend-io.h  |  31 +++++++--
 block.c                            |  82 +++++++++++++---------
 block/blkdebug.c                   |  11 +--
 block/blkio.c                      |  15 ++--
 block/blklogwrites.c               |   6 +-
 block/blkreplay.c                  |   6 +-
 block/blkverify.c                  |   6 +-
 block/block-backend.c              |  36 +++++-----
 block/commit.c                     |   4 +-
 block/copy-on-read.c               |  18 ++---
 block/crypto.c                     |  14 ++--
 block/curl.c                       |  10 +--
 block/file-posix.c                 | 107 ++++++++++++++---------------
 block/file-win32.c                 |  18 +++--
 block/filter-compress.c            |  20 +++---
 block/gluster.c                    |  23 ++++---
 block/io.c                         |  76 ++++++++++----------
 block/iscsi.c                      |  17 ++---
 block/mirror.c                     |   6 +-
 block/nbd.c                        |   8 +--
 block/nfs.c                        |   4 +-
 block/null.c                       |  13 ++--
 block/nvme.c                       |  14 ++--
 block/preallocate.c                |  16 ++---
 block/qcow.c                       |   5 +-
 block/qcow2-refcount.c             |   2 +-
 block/qcow2.c                      |  17 ++---
 block/qed.c                        |  11 +--
 block/quorum.c                     |   8 +--
 block/raw-format.c                 |  25 +++----
 block/rbd.c                        |   9 +--
 block/replication.c                |   6 +-
 block/ssh.c                        |   4 +-
 block/throttle.c                   |   6 +-
 block/vdi.c                        |   7 +-
 block/vhdx.c                       |   5 +-
 block/vmdk.c                       |  14 ++--
 block/vpc.c                        |   5 +-
 blockdev.c                         |   8 ++-
 hw/scsi/scsi-disk.c                |   5 ++
 tests/unit/test-block-iothread.c   |   3 +
 scripts/block-coroutine-wrapper.py |  20 ++++--
 block/meson.build                  |   1 +
 46 files changed, 443 insertions(+), 346 deletions(-)

-- 
2.38.1