The node insert/remove functions were added at the block generic layer. COR-filter options structure was added to the QAPI. The test case #310 was added to check the 'bottom' node limit for COR. The 'supported_read_flags' member was added to the BDS structure (with the flags check at the block generic layer for drivers).
v12: 02: New. 03: Only the temporary drop filter function left. 05: New (suggested by Max) 06: 'base' -> 'bottom' option. 07: Fixes based on the review of the v11. 08: New. 09: The comment ext was modified. 10: The read flags check at the block generic layer. 11: COR flag was added. 12: The condition was fixed. 13: The 'backing-file' parameter returned. No deprecation. 14: The COR-filter 'add' function replaced with the 'insert node' generic function. Fixes based on the review of the v11. Andrey Shinkevich (14): copy-on-read: support preadv/pwritev_part functions block: add insert/remove node functions copy-on-read: add filter drop function qapi: add filter-node-name to block-stream qapi: create BlockdevOptionsCor structure for COR driver copy-on-read: pass bottom node name to COR driver copy-on-read: limit COR operations to bottom node iotests: add #310 to test bottom node in COR driver block: modify the comment for BDRV_REQ_PREFETCH flag block: include supported_read_flags into BDS structure copy-on-read: add support for read flags to COR-filter copy-on-read: skip non-guest reads if no copy needed stream: skip filters when writing backing file name to QCOW2 header block: apply COR-filter to block-stream jobs block.c | 49 ++++++++++++++ block/copy-on-read.c | 144 +++++++++++++++++++++++++++++++++++++---- block/copy-on-read.h | 32 +++++++++ block/io.c | 12 +++- block/monitor/block-hmp-cmds.c | 4 +- block/stream.c | 117 ++++++++++++++++++++++----------- blockdev.c | 13 ++-- include/block/block.h | 11 +++- include/block/block_int.h | 11 +++- qapi/block-core.json | 27 +++++++- tests/qemu-iotests/030 | 51 ++------------- tests/qemu-iotests/030.out | 4 +- tests/qemu-iotests/141.out | 2 +- tests/qemu-iotests/245 | 22 +++++-- tests/qemu-iotests/310 | 109 +++++++++++++++++++++++++++++++ tests/qemu-iotests/310.out | 15 +++++ tests/qemu-iotests/group | 3 +- 17 files changed, 503 insertions(+), 123 deletions(-) create mode 100644 block/copy-on-read.h create mode 100755 tests/qemu-iotests/310 create mode 100644 tests/qemu-iotests/310.out -- 1.8.3.1