Some of these are optimizations, the latter part is prep work for supporting polling with aio. Patches against my for-4.21/block branch. These patches can also be found in my mq-perf branch. Some of them are prep patches for the aio poll work, which can be found in my aio-poll branch. These will get posted soon. Changes since v3: - Fix tiny race in iocb flag checking for plugging - Improve poll-many implementation, including nvme-rdma - Get rid of unneeded smp_rmb() - Drop merged patches Changes since v2: - Include polled swap IO in the poll optimizations - Get rid of unnecessary write barrier for DIO wakeup - Fix a potential stall if need_resched() was set and preempt wasn't enabled - Provide separate mq_ops for NVMe with poll queues - Drop q->mq_ops patch - Rebase on top of for-4.21/block Changes since v1: - Improve nvme irq disabling for polled IO - Fix barriers in the ordered wakeup for polled O_DIRECT - Add patch to allow polling to find any command that is done - Add patch to control whether polling spins or not - Have async O_DIRECT mark a bio as pollable - Don't plug for polling block/blk-core.c | 4 +- block/blk-mq.c | 91 +++++++++++++++++++++------------------ drivers/nvme/host/fc.c | 33 -------------- drivers/nvme/host/multipath.c | 6 +-- drivers/nvme/host/pci.c | 22 +++++----- drivers/nvme/host/rdma.c | 38 ++++++++-------- drivers/nvme/target/io-cmd-bdev.c | 2 +- fs/block_dev.c | 11 +++-- fs/direct-io.c | 2 +- fs/iomap.c | 5 ++- include/linux/blk-mq.h | 2 +- include/linux/blkdev.h | 4 +- mm/page_io.c | 5 ++- 13 files changed, 101 insertions(+), 124 deletions(-) -- Jens Axboe
