smc: allocate RMBs as compound pages

Preparatory work for splice() support.

Signed-off-by: Stefan Raspl <raspl@linux.ibm.com>
Signed-off-by: Ursula Braun <ubraun@linux.ibm.com><
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/smc/smc_core.h b/net/smc/smc_core.h
index 70ef4f4..fca8624 100644
--- a/net/smc/smc_core.h
+++ b/net/smc/smc_core.h
@@ -120,6 +120,7 @@
 struct smc_buf_desc {
 	struct list_head	list;
 	void			*cpu_addr;	/* virtual address of buffer */
+	struct page		*pages;
 	struct sg_table		sgt[SMC_LINKS_PER_LGR_MAX];/* virtual buffer */
 	struct ib_mr		*mr_rx[SMC_LINKS_PER_LGR_MAX];
 						/* for rmb only: memory region