[PATCH v2 0/5] svcrdma: Go back to releasing pages-under-I/O

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Return to the behavior of releasing reply buffer pages as part of
sending an RPC Reply over RDMA. I measured a performance improvement
(which is documented in 4/4). Matching the page release behavior of
socket transports also means we should be able to share a little
more code between transports as MSG_SPLICE_PAGES rolls out.

Changes since v1:
- Add a related fix
- Clarify some of the patch descriptions

---

Chuck Lever (5):
      SUNRPC: Revert cc93ce9529a6 ("svcrdma: Retain the page backing rq_res.head[0].iov_base")
      SUNRPC: Revert 579900670ac7 ("svcrdma: Remove unused sc_pages field")
      svcrdma: Revert 2a1e4f21d841 ("svcrdma: Normalize Send page handling")
      svcrdma: Prevent page release when nothing was received
      SUNRPC: Optimize page release in svc_rdma_sendto()


 include/linux/sunrpc/svc_rdma.h            |  4 +-
 net/sunrpc/xprtrdma/svc_rdma_backchannel.c |  8 +---
 net/sunrpc/xprtrdma/svc_rdma_recvfrom.c    | 12 ++---
 net/sunrpc/xprtrdma/svc_rdma_sendto.c      | 53 ++++++++++++++--------
 4 files changed, 44 insertions(+), 33 deletions(-)

--
Chuck Lever




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