[PATCH for-next v7 0/6] RDMA/rxe: Replace mr page map with an xarray

[Bob Pearson <rpearsonhpe@gmail.com>]

This patch series replaces the page map carried in each memory region
with a struct xarray. It is based on a sketch developed by Jason
Gunthorpe. The first five patches are preparation that tries to
cleanly isolate all the mr specific code into rxe_mr.c. The sixth
patch is the actual change.

v7:
  Link: https://lore.kernel.org/linux-rdma/Y8f53jdDAN0B9qy7@nvidia.com/
  Made changes requested by Jason to return RESPST_ERR_XXX from rxe_mr.c
  to rxe_resp.c.
v6:
  Backed out.
v5:
  Responded to a note from lizhijian@fujitsu.com and restored calls to
  is_pmem_page() which were accidentally dropped in earlier versions.
v4:
  Responded to a comment by Zhu and cleaned up error passing between
  rxe_mr.c and rxe_resp.c.
  Other various cleanups including more careful use of unsigned ints.
  Rebased to current for-next.
v3:
  Fixed an error reported by kernel test robot
v2:
  Rebased to 6.2.0-rc1+
  Minor cleanups
  Fixed error reported by Jason in 4/6 missing if after else.


Bob Pearson (6):
  RDMA/rxe: Cleanup mr_check_range
  RDMA/rxe: Move rxe_map_mr_sg to rxe_mr.c
  RDMA-rxe: Isolate mr code from atomic_reply()
  RDMA-rxe: Isolate mr code from atomic_write_reply()
  RDMA/rxe: Cleanup page variables in rxe_mr.c
  RDMA/rxe: Replace rxe_map and rxe_phys_buf by xarray

 drivers/infiniband/sw/rxe/rxe.h       |  38 ++
 drivers/infiniband/sw/rxe/rxe_loc.h   |  12 +-
 drivers/infiniband/sw/rxe/rxe_mr.c    | 605 ++++++++++++++------------
 drivers/infiniband/sw/rxe/rxe_resp.c  | 143 ++----
 drivers/infiniband/sw/rxe/rxe_verbs.c |  36 --
 drivers/infiniband/sw/rxe/rxe_verbs.h |  32 +-
 6 files changed, 425 insertions(+), 441 deletions(-)


base-commit: 1ec82317a1daac78c04b0c15af89018ccf9fa2b7
-- 
2.37.2