Linux kernel bug fix: IB/hfi1: Reduce lock contention on iowait_lock for sdma and pio
Subsystem: rdma (drivers/infiniband/hw/hfi1/user_sdma.c)
Bug type: hang, severity: medium
Files changed: drivers/infiniband/hw/hfi1/pio.c;drivers/infiniband/hw/hfi1/pio.h;drivers/infiniband/hw/hfi1/qp.c;drivers/infiniband/hw/hfi1/sdma.c;drivers/infiniband/hw/hfi1/sdma.h;drivers/infiniband/hw/hfi1/user_sdma.c;drivers/infiniband/hw/hfi1/verbs.c;drivers/infiniband/hw/hfi1/vnic_sdma.c
Introduced by Mike Marciniszyn on 2015-08-28 22:59:36 -0400; fixed by Mike Marciniszyn on 2018-12-06 20:15:36 -0700 (lifetime: 1195 days)