From 43b857fddb0aa0a2fef1e00c696a80056c6367a8 Mon Sep 17 00:00:00 2001
From: David Quigley <dpquigl@users.noreply.github.com>
Date: Tue, 31 Jan 2017 11:36:18 -0700
Subject: [PATCH] Add a PAGESHIFT definition

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: David Quigley <david.quigley@intel.com>
Closes #598
---
 include/sys/sysmacros.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/sys/sysmacros.h b/include/sys/sysmacros.h
index f6b1e28e8..a4a9f3e98 100644
--- a/include/sys/sysmacros.h
+++ b/include/sys/sysmacros.h
@@ -32,6 +32,7 @@
 #include <sys/varargs.h>
 #include <sys/zone.h>
 #include <sys/signal.h>
+#include <asm/page.h>
 
 #ifdef HAVE_SCHED_RT_HEADER
 #include <linux/sched/rt.h>
@@ -111,6 +112,10 @@
 #define PAGESIZE			PAGE_SIZE
 #endif
 
+#ifndef PAGESHIFT
+#define PAGESHIFT			PAGE_SHIFT
+#endif
+
 /* from Solaris sys/byteorder.h */
 #define BSWAP_8(x)	((x) & 0xff)
 #define BSWAP_16(x)	((BSWAP_8(x) << 8) | BSWAP_8((x) >> 8))