From: Chuck Lever <chuck.lever@xxxxxxxxxx> 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
