In v4:
- patch 2 has even more wording tweaks [Kevin]
- patch 3 is new [Berto]
- patch 5 fixes an off-by-one [Berto]

Eric Blake (5):
  qcow2: Prefer byte-based calls into bs->file
  qcow2: Document some maximum size constraints
  qcow2: Reduce REFT_OFFSET_MASK
  qcow2: Don't allow overflow during cluster allocation
  qcow2: Avoid memory over-allocation on compressed images

 docs/interop/qcow2.txt | 38 +++++++++++++++++++++++++++++++++++---
 block/qcow2.h          |  8 +++++++-
 block/qcow2-cluster.c  | 32 ++++++++++++++++++++------------
 block/qcow2-refcount.c | 27 +++++++++++++++++----------
 block/qcow2.c          |  2 +-
 5 files changed, 80 insertions(+), 27 deletions(-)

-- 
2.14.3