v2: https://lists.nongnu.org/archive/html/qemu-devel/2024-05/msg02396.html
v2 -> v3:
* Added patch 12/12 "qcow2: add discard-subclusters option" which
makes subcluster-based discards optional;
* Added a bunch of R-b's.
Andrey Drobyshev (12):
qcow2: make function update_refcount_discard() global
qcow2: simplify L2 entries accounting for discard-no-unref
qcow2: put discard requests in the common queue when discard-no-unref
enabled
block/file-posix: add trace event for fallocate() calls
iotests/common.rc: add disk_usage function
iotests/290: add test case to check 'discard-no-unref' option behavior
qcow2: add get_sc_range_info() helper for working with subcluster
ranges
qcow2: zeroize the entire cluster when there're no non-zero
subclusters
qcow2: make subclusters discardable
qcow2: zero_l2_subclusters: fall through to discard operation when
requested
iotests/271: add test cases for subcluster-based discard/unmap
qcow2: add discard-subclusters option
block/file-posix.c | 1 +
block/qcow2-cluster.c | 346 ++++++++++++++++++++++++++++-------
block/qcow2-refcount.c | 8 +-
block/qcow2-snapshot.c | 6 +-
block/qcow2.c | 44 +++--
block/qcow2.h | 8 +-
block/trace-events | 1 +
tests/qemu-iotests/250 | 5 -
tests/qemu-iotests/271 | 74 ++++++--
tests/qemu-iotests/271.out | 69 ++++++-
tests/qemu-iotests/290 | 34 ++++
tests/qemu-iotests/290.out | 28 +++
tests/qemu-iotests/common.rc | 6 +
13 files changed, 513 insertions(+), 117 deletions(-)
--
2.39.3
