ib_map_mr_sg() and ib_map_mr_sg_pi() allow ULPs to specify NULL as
the sg_offset/data_sg_offset/meta_sg_offset arguments. Drivers who
need to derefernce these arguments have to add NULL pointer checks
to avoid crashing the kernel.
This can be optimized by adding dummy sg_offset pointer to these
two APIs. When the sg_offset arguments are NULL, pass the pointer
of dummy to drivers. Drivers can always get a valid pointer, so no
need to add NULL pointer checks.
Junxian Huang (2):
RDMA/core: Add dummy sg_offset pointer for ib_map_mr_sg() and
ib_map_mr_sg_pi()
RDMA: Delete NULL pointer checks for sg_offset in .map_mr_sg ops
drivers/infiniband/core/verbs.c | 12 +++++++++---
drivers/infiniband/hw/mlx5/mr.c | 18 ++++++------------
drivers/infiniband/sw/rdmavt/trace_mr.h | 2 +-
3 files changed, 16 insertions(+), 16 deletions(-)
--
2.33.0
