Hi, all
This version reworked on REQ_FLUSH and REQ_FUA support as suggested by
Christoph and dropped the block core bits since Jens has picked them up.
Fio test shows bio-based IO path gives the following performance improvement:
1) Ramdisk device
With bio-based IO path, sequential read/write, random read/write
IOPS boost : 28%, 24%, 21%, 16%
Latency improvement: 32%, 17%, 21%, 16%
2) Fusion IO device
With bio-based IO path, sequential read/write, random read/write
IOPS boost : 11%, 11%, 13%, 10%
Latency improvement: 10%, 10%, 12%, 10%
Asias He (2):
virtio-blk: Add bio-based IO path for virtio-blk
virtio-blk: Add REQ_FLUSH and REQ_FUA support to bio path
drivers/block/virtio_blk.c | 306 +++++++++++++++++++++++++++++++++++++++------
1 file changed, 268 insertions(+), 38 deletions(-)
--
1.7.11.2
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