this series adds the long missing multiread support to virtio-blk. some remarks: - i introduced rd_merged and wr_merged block accounting stats to blockstats as a generic interface which can be set from any driver that will introduce multirequst merging in the future. - the knob to disable request merging is not yet there. I would add it to the device properties also as a generic interface to have the same switch on for any driver that might introduce request merging in the future - there is cleanup and iotest adjustion missing.
Peter Lieven (3): block: add accounting for merged requests hw/virtio-blk: add a constant for max number of merged requests virtio-blk: introduce multiread block.c | 2 + block/accounting.c | 7 ++ block/qapi.c | 2 + hmp.c | 6 +- hw/block/dataplane/virtio-blk.c | 10 +- hw/block/virtio-blk.c | 222 ++++++++++++++++++++++++--------------- include/block/accounting.h | 3 + include/hw/virtio/virtio-blk.h | 21 ++-- qapi/block-core.json | 10 +- 9 files changed, 184 insertions(+), 99 deletions(-) -- 1.7.9.5
