[Qemu-block] [PATCH v3 0/2] mirror: Improve zero write and discard

[Fam Zheng]

The first patch adds a lock between bdrv_set_dirty{,_bitmap} and non-atomic
(coroutine) readers,

The second patch makes use of it and fixes mirror thin writing.

Fam Zheng (2):
  block: Introduce coroutine lock to dirty bitmap
  mirror: Improve zero-write and discard with fragmented image

 block.c                   |  26 ++++++--
 block/mirror.c            | 160 ++++++++++++++++++++++++++++++++++++----------
 include/block/block.h     |   6 +-
 include/block/block_int.h |   4 +-
 4 files changed, 156 insertions(+), 40 deletions(-)

-- 
2.4.3