diff --git a/net/sunrpc/xprtrdma/verbs.c b/net/sunrpc/xprtrdma/verbs.c
index 805b1f35e1ca..e639ea0faf19 100644
--- a/net/sunrpc/xprtrdma/verbs.c
+++ b/net/sunrpc/xprtrdma/verbs.c
@@ -53,6 +53,7 @@
 #include <linux/slab.h>
 #include <linux/sunrpc/addr.h>
 #include <linux/sunrpc/svc_rdma.h>
+#include <linux/log2.h>
 
 #include <asm-generic/barrier.h>
 #include <asm/bitops.h>
@@ -1000,12 +1001,18 @@ struct rpcrdma_req *rpcrdma_req_create(struct rpcrdma_xprt *r_xprt, size_t size,
 	struct rpcrdma_buffer *buffer = &r_xprt->rx_buf;
 	struct rpcrdma_regbuf *rb;
 	struct rpcrdma_req *req;
+	size_t maxhdrsize;
 
 	req = kzalloc(sizeof(*req), flags);
 	if (req == NULL)
 		goto out1;
 
-	rb = rpcrdma_regbuf_alloc(RPCRDMA_HDRBUF_SIZE, DMA_TO_DEVICE, flags);
+	/* Compute maximum header buffer size in bytes */
+	maxhdrsize = rpcrdma_fixed_maxsz + 3 +
+		     r_xprt->rx_ia.ri_max_segs * rpcrdma_readchunk_maxsz;
+	maxhdrsize *= sizeof(__be32);
+	rb = rpcrdma_regbuf_alloc(__roundup_pow_of_two(maxhdrsize),
+				  DMA_TO_DEVICE, flags);
 	if (!rb)
 		goto out2;
 	req->rl_rdmabuf = rb;
diff --git a/net/sunrpc/xprtrdma/xprt_rdma.h b/net/sunrpc/xprtrdma/xprt_rdma.h
index 3b2f2041e889..eaf6b907a76e 100644
--- a/net/sunrpc/xprtrdma/xprt_rdma.h
+++ b/net/sunrpc/xprtrdma/xprt_rdma.h
@@ -155,25 +155,22 @@ static inline void *rdmab_data(const struct rpcrdma_regbuf *rb)
 
 /* To ensure a transport can always make forward progress,
  * the number of RDMA segments allowed in header chunk lists
- * is capped at 8. This prevents less-capable devices and
- * memory registrations from overrunning the Send buffer
- * while building chunk lists.
+ * is capped at 16. This prevents less-capable devices from
+ * overrunning the Send buffer while building chunk lists.
  *
  * Elements of the Read list take up more room than the
- * Write list or Reply chunk. 8 read segments means the Read
- * list (or Write list or Reply chunk) cannot consume more
- * than
+ * Write list or Reply chunk. 16 read segments means the
+ * chunk lists cannot consume more than
  *
- * ((8 + 2) * read segment size) + 1 XDR words, or 244 bytes.
+ * ((16 + 2) * read segment size) + 1 XDR words,
  *
- * And the fixed part of the header is another 24 bytes.
- *
- * The smallest inline threshold is 1024 bytes, ensuring that
- * at least 750 bytes are available for RPC messages.
+ * or about 400 bytes. The fixed part of the header is
+ * another 24 bytes. Thus when the inline threshold is
+ * 1024 bytes, at least 600 bytes are available for RPC
+ * message bodies.
  */
 enum {
-	RPCRDMA_MAX_HDR_SEGS = 8,
-	RPCRDMA_HDRBUF_SIZE = 256,
+	RPCRDMA_MAX_HDR_SEGS = 16,
 };
 
 /*