[Qemu-devel] [PATCH 00/12] block: Move I/O throttling to BlockBackend

[Kevin Wolf]

This is another feature that was "logically" part of the BlockBackend, but
implemented as a BlockDriverState feature. It was always kept on top using
swap_feature_fields().

This series moves it to be actually implemented in the BlockBackend, removing
another obstacle for removing bs->blk and allowing multiple BBs per BDS.

Depends on 'block: Implement writethrough in BlockBackend'.

Kevin Wolf (12):
  block: Don't disable I/O throttling on sync requests
  block: Make sure throttled BDSes always have a BB
  block: Introduce BlockBackendPublic
  block: throttle-groups: Use BlockBackend pointers internally
  block: Convert throttle_group_get_name() to BlockBackend
  block: Move throttling fields from BDS to BB
  block: Move actual I/O throttling to BlockBackend
  block: Move I/O throttling configuration functions to BlockBackend
  block: Introduce BdrvChild.opaque
  block: Drain throttling queue with BdrvChild callback
  block: Decouple throttling from BlockDriverState
  block: Don't check throttled reqs in bdrv_requests_pending()

 block.c                         |  23 +----
 block/block-backend.c           | 146 +++++++++++++++++++++-----
 block/io.c                      | 115 +++------------------
 block/qapi.c                    |   6 +-
 block/throttle-groups.c         | 223 +++++++++++++++++++++-------------------
 blockdev.c                      |  43 +++-----
 include/block/block.h           |   6 +-
 include/block/block_int.h       |  23 +----
 include/block/throttle-groups.h |  12 +--
 include/sysemu/block-backend.h  |  27 +++++
 tests/test-throttle.c           |  62 ++++++-----
 11 files changed, 345 insertions(+), 341 deletions(-)

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1.8.3.1