[Qemu-devel] [PATCH v2 0/5] qcow2: Implement .bdrv_co_preadv/pwritev

[Kevin Wolf <kwolf@redhat.com>]

This series converts qcow2 to the byte-based I/O interfaces. This simplifies
the code by removing many unit conversions, and in the unlikely case of actual
unaligned requests, it even makes the driver work more efficiently by avoiding
read-modify-write.

v2:
- Be more careful with integer overflows [Eric]
- Updated some more comments [Eric]
- Rename copy_sectors -> do_perform_cow [Eric] 
- Write single byte instead of full sector at preallocation end [Eric]

Kevin Wolf (5):
  qcow2: Work with bytes in qcow2_get_cluster_offset()
  qcow2: Implement .bdrv_co_preadv()
  qcow2: Make copy_sectors() byte based
  qcow2: Use bytes instead of sectors for QCowL2Meta
  qcow2: Implement .bdrv_co_pwritev()

 block/qcow2-cluster.c | 146 +++++++++++++++++--------------------
 block/qcow2.c         | 197 +++++++++++++++++++++++++-------------------------
 block/qcow2.h         |  18 ++---
 trace-events          |   6 +-
 4 files changed, 176 insertions(+), 191 deletions(-)

-- 
1.8.3.1