[PATCH v3 0/3] proper locking on bitmap add/remove paths

[Vladimir Sementsov-Ogievskiy]

Hi all!

We need to lock qcow2 mutex on accessing in-image metadata, especially
on updating this metadata. Let's implement it.

v3:
01: add John's r-b
02: - fix bdrv_remove_persistent_dirty_bitmap return value
    - drop extra zeroing of ret in qcow2_remove_persistent_dirty_bitmap
03: add John's r-b

Vladimir Sementsov-Ogievskiy (3):
  block: move bdrv_can_store_new_dirty_bitmap to block/dirty-bitmap.c
  block/dirty-bitmap: return int from
    bdrv_remove_persistent_dirty_bitmap
  block/qcow2: proper locking on bitmap add/remove paths

 block/qcow2.h                |  14 ++---
 include/block/block_int.h    |  14 ++---
 include/block/dirty-bitmap.h |   5 +-
 block.c                      |  22 -------
 block/dirty-bitmap.c         | 119 +++++++++++++++++++++++++++++++++--
 block/qcow2-bitmap.c         |  36 +++++++----
 block/qcow2.c                |   5 +-
 blockdev.c                   |  28 +++------
 8 files changed, 163 insertions(+), 80 deletions(-)

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2.21.0