Commit cc93ce95 authored by Chuck Lever's avatar Chuck Lever
Browse files

svcrdma: Retain the page backing rq_res.head[0].iov_base 



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: default avatarChuck Lever <chuck.lever@oracle.com>
parent 57990067

net/sunrpc/xprtrdma/svc_rdma_sendto.c

+5 −0
Original line number Diff line number Diff line
@@ -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: