[Qemu-devel] [PATCH v2 0/5] qcow2: Discard freed clusters

[Kevin Wolf]

This series adds options to make qcow2 discard freed clusters, in several
categories. By default, only freed clusters related to snapshots (i.e. mainly
snapshot deletion) are discarded.

v2:
- Removed leftover debug code
- Don't discard after COW (overwriting compressed clusters)
- Changed some commas into semicolons

Kevin Wolf (5):
  Revert "block: Disable driver-specific options for 1.5"
  qcow2: Add refcount update reason to all callers
  qcow2: Options to enable discard for freed clusters
  qcow2: Batch discards
  block: Always enable discard on the protocol level

 block.c                  |   2 +-
 block/qcow2-cluster.c    |  41 ++++++++++----
 block/qcow2-refcount.c   | 136 +++++++++++++++++++++++++++++++++++++++--------
 block/qcow2-snapshot.c   |   6 ++-
 block/qcow2.c            |  30 ++++++++++-
 block/qcow2.h            |  32 +++++++++--
 blockdev.c               | 118 ++--------------------------------------
 tests/qemu-iotests/group |   2 +-
 8 files changed, 214 insertions(+), 153 deletions(-)

-- 
1.8.1.4