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| author |   Chuck Lever <chuck.lever@oracle.com> | 2017-04-09 13:05:52 -0400 |
|---|---|---|
| committer |   J. Bruce Fields <bfields@redhat.com> | 2017-04-25 17:25:54 -0400 |
| commit | b623589dbacbc786c2fffc85113a1dc1a331e2ca (patch) | |
| tree | 6cc0b33b761469c882e208438b2688d32926b84c /net/sunrpc | |
| parent | svcrdma: Add svc_rdma_map_reply_hdr() (diff) | |
| download | linux-dev-b623589dbacbc786c2fffc85113a1dc1a331e2ca.tar.xz linux-dev-b623589dbacbc786c2fffc85113a1dc1a331e2ca.zip | |
svcrdma: Eliminate RPCRDMA_SQ_DEPTH_MULT
The Send Queue depth is temporarily reduced to 1 SQE per credit. The
new rdma_rw API does an internal computation, during QP creation, to
increase the depth of the Send Queue to handle RDMA Read and Write
operations.
This change has to come before the NFSD code paths are updated to
use the rdma_rw API. Without this patch, rdma_rw_init_qp() increases
the size of the SQ too much, resulting in memory allocation failures
during QP creation.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'net/sunrpc')
| -rw-r--r-- | net/sunrpc/xprtrdma/svc_rdma.c | 2 | ||||
| -rw-r--r-- | net/sunrpc/xprtrdma/svc_rdma_transport.c | 2 |
2 files changed, 1 insertions, 3 deletions
diff --git a/net/sunrpc/xprtrdma/svc_rdma.c b/net/sunrpc/xprtrdma/svc_rdma.c index c846ca9f1eba..912444174647 100644 --- a/net/sunrpc/xprtrdma/svc_rdma.c +++ b/net/sunrpc/xprtrdma/svc_rdma.c @@ -247,8 +247,6 @@ int svc_rdma_init(void) dprintk("SVCRDMA Module Init, register RPC RDMA transport\n"); dprintk("\tsvcrdma_ord : %d\n", svcrdma_ord); dprintk("\tmax_requests : %u\n", svcrdma_max_requests); - dprintk("\tsq_depth : %u\n", - svcrdma_max_requests * RPCRDMA_SQ_DEPTH_MULT); dprintk("\tmax_bc_requests : %u\n", svcrdma_max_bc_requests); dprintk("\tmax_inline : %d\n", svcrdma_max_req_size); diff --git a/net/sunrpc/xprtrdma/svc_rdma_transport.c b/net/sunrpc/xprtrdma/svc_rdma_transport.c index fc8f14c7bfec..e1097cc6d1eb 100644 --- a/net/sunrpc/xprtrdma/svc_rdma_transport.c +++ b/net/sunrpc/xprtrdma/svc_rdma_transport.c @@ -1014,7 +1014,7 @@ static struct svc_xprt *svc_rdma_accept(struct svc_xprt *xprt) svcrdma_max_bc_requests); newxprt->sc_rq_depth = newxprt->sc_max_requests + newxprt->sc_max_bc_requests; - newxprt->sc_sq_depth = RPCRDMA_SQ_DEPTH_MULT * newxprt->sc_rq_depth; + newxprt->sc_sq_depth = newxprt->sc_rq_depth; atomic_set(&newxprt->sc_sq_avail, newxprt->sc_sq_depth); if (!svc_rdma_prealloc_ctxts(newxprt)) |