[PATCH v2 0/6] Remove svc_rqst :: rq_vec

[cel@kernel.org]

From: Chuck Lever <chuck.lever@oracle.com>

I expect this arrangement will not be permanent: the end-goal
might be folio queues rather than bio_vecs.

I intend to insert these into the series that expands the maximum
r/wsize, once this series is reviewed.

Testing has shown no correctness issues. There is a consistent and
measurable performance loss on NFSv4.1 with the write path changes.
I've mitigated it somewhat in this version of the series, but I
still do not understand why it happens (it also happened when the
series used svc_fill_write_vector()).

Chuck Lever (6):
  NFSD: Use rqstp->rq_bvec in nfsd_iter_read()
  SUNRPC: Export xdr_buf_to_bvec()
  NFSD: De-duplicate the svc_fill_write_vector() call sites
  NFSD: Use rqstp->rq_bvec in nfsd_iter_write()
  SUNRPC: Remove svc_fill_write_vector()
  SUNRPC: Remove svc_rqst :: rq_vec

 fs/nfsd/nfs3proc.c         |  5 +--
 fs/nfsd/nfs4proc.c         |  8 ++---
 fs/nfsd/nfsproc.c          |  9 ++----
 fs/nfsd/vfs.c              | 65 +++++++++++++++++++++++++++-----------
 fs/nfsd/vfs.h              | 10 +++---
 include/linux/sunrpc/svc.h |  3 --
 net/sunrpc/svc.c           | 46 ---------------------------
 net/sunrpc/xdr.c           |  1 +
 8 files changed, 59 insertions(+), 88 deletions(-)

-- 
2.49.0