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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: 03fe993153 ('svcrdma: Define maximum number of ...')
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
Chuck Lever 2016-05-04 10:53:22 -04:00 committed by J. Bruce Fields
parent cac7f15036
commit 0319aafc95
1 changed files with 1 additions and 1 deletions
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2
net/sunrpc/xprtrdma/svc_rdma_transport.c
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@ -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");