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Commit 40c6ed0c authored by Chuck Lever's avatar Chuck Lever Committed by Anna Schumaker
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xprtrdma: Reduce per-transport MR allocation 



Reduce resource consumption per-transport to make way for increasing
the credit limit and maximum r/wsize. Pre-allocate fewer MRs.

Signed-off-by: default avatarChuck Lever <chuck.lever@oracle.com>
Reviewed-by: default avatarSteve Wise <swise@opengridcomputing.com>
Reviewed-by: default avatarSagi Grimberg <sagig@mellanox.com>
Reviewed-by: default avatarDevesh Sharma <devesh.sharma@avagotech.com>
Tested-By: default avatarDevesh Sharma <devesh.sharma@avagotech.com>
Reviewed-by: default avatarDoug Ledford <dledford@redhat.com>
Signed-off-by: default avatarAnna Schumaker <Anna.Schumaker@Netapp.com>
parent acb9da7a

net/sunrpc/xprtrdma/fmr_ops.c

+4 −2
Original line number Diff line number Diff line
@@ -69,8 +69,10 @@ fmr_op_init(struct rpcrdma_xprt *r_xprt) 
	INIT_LIST_HEAD(&buf->rb_mws);

	INIT_LIST_HEAD(&buf->rb_all);



	i = (buf->rb_max_requests + 1) * RPCRDMA_MAX_SEGS;

	dprintk("RPC:       %s: initializing %d FMRs\n", __func__, i);

	i = max_t(int, RPCRDMA_MAX_DATA_SEGS / RPCRDMA_MAX_FMR_SGES, 1);

	i += 2;				/* head + tail */

	i *= buf->rb_max_requests;	/* one set for each RPC slot */

	dprintk("RPC:       %s: initalizing %d FMRs\n", __func__, i);



	rc = -ENOMEM;

	while (i--) {

net/sunrpc/xprtrdma/frwr_ops.c

+4 −2
Original line number Diff line number Diff line
@@ -270,8 +270,10 @@ frwr_op_init(struct rpcrdma_xprt *r_xprt) 
	INIT_LIST_HEAD(&buf->rb_mws);

	INIT_LIST_HEAD(&buf->rb_all);



	i = (buf->rb_max_requests + 1) * RPCRDMA_MAX_SEGS;

	dprintk("RPC:       %s: initializing %d FRMRs\n", __func__, i);

	i = max_t(int, RPCRDMA_MAX_DATA_SEGS / depth, 1);

	i += 2;				/* head + tail */

	i *= buf->rb_max_requests;	/* one set for each RPC slot */

	dprintk("RPC:       %s: initalizing %d FRMRs\n", __func__, i);



	while (i--) {

		struct rpcrdma_mw *r;