Re: [RFC 0/2] virtio-pmem: Asynchronous flush

Jeff reported preflush order issue with the existing implementation of virtio pmem preflush. Dan suggested[1] to implement asynchronous flush for virtio pmem using work queue as done in md/RAID. This patch series intends to solve the preflush ordering issue and also makes the flush asynchronous from the submitting thread POV. Submitting this patch series for feeback and is in WIP. I have done basic testing and currently doing more testing. Pankaj Gupta (2): pmem: make nvdimm_flush asynchronous virtio_pmem: Async virtio-pmem flush drivers/nvdimm/nd_virtio.c | 66 ++++++++++++++++++++++++++---------- drivers/nvdimm/pmem.c | 15 ++++---- drivers/nvdimm/region_devs.c | 3 +- drivers/nvdimm/virtio_pmem.c | 9 +++++ drivers/nvdimm/virtio_pmem.h | 12 +++++++ 5 files changed, 78 insertions(+), 27 deletions(-) [1] https://marc.info/?l=linux-kernel&m=157446316409937&w=2