| Message ID | 161653184711.1499.18423742648834808627.stgit@klimt.1015granger.net (mailing list archive) |
|---|---|
| State | Not Applicable |
| Headers | show |
| Series | Move post-send page release into svc_sendto | expand |
diff --git a/net/sunrpc/xprtrdma/svc_rdma_sendto.c b/net/sunrpc/xprtrdma/svc_rdma_sendto.c index f093c9b536ff..056452cabc98 100644 --- a/net/sunrpc/xprtrdma/svc_rdma_sendto.c +++ b/net/sunrpc/xprtrdma/svc_rdma_sendto.c @@ -957,6 +957,11 @@ int svc_rdma_sendto(struct svc_rqst *rqstp) ret = svc_rdma_send_reply_msg(rdma, sctxt, rctxt, rqstp); if (ret < 0) goto err1; + + /* Prevent svc_xprt_release() from releasing the page backing + * rq_res.head[0].iov_base. It's no longer being accessed by + * the I/O device. */ + rqstp->rq_respages++; return 0; err2:
svc_rdma_sendto() now waits for the NIC hardware to finish with the pages backing rq_res. We still have to release the page array in some cases, but now it's always safe to immediately re-use the page backing rq_res's head buffer. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> --- net/sunrpc/xprtrdma/svc_rdma_sendto.c | 5 +++++ 1 file changed, 5 insertions(+)