Commit 0319aafc authored May 04, 2016 by Chuck Lever Committed by J. Bruce Fields May 13, 2016

svcrdma: Post Receives only for forward channel requests



Since backward direction support was added, the rq_depth was
increased to accommodate both forward and backward Receives.

But only forward Receives need to be posted after a connection
has been accepted. Receives for backward replies are posted as
needed by svc_rdma_bc_sendto().

This doesn't break anything, but it means some resources are
wasted.

Fixes: 03fe9931 ('svcrdma: Define maximum number of ...')
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

parent cac7f150

net/sunrpc/xprtrdma/svc_rdma_transport.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -1083,7 +1083,7 @@ static struct svc_xprt svc_rdma_accept(struct svc_xprt xprt)
		newxprt->sc_dev_caps \|= SVCRDMA_DEVCAP_READ_W_INV;

		/* Post receive buffers */
		for (i = 0; i < newxprt->sc_rq_depth; i++) {
		for (i = 0; i < newxprt->sc_max_requests; i++) {
		ret = svc_rdma_post_recv(newxprt, GFP_KERNEL);
		if (ret) {
		dprintk("svcrdma: failure posting receive buffers\n");