From 9e00d2a9a47d03b41e88407eb89395b870a104a5 Mon Sep 17 00:00:00 2001
From: Stefan Metzmacher <metze@samba.org>
Date: Wed, 19 Jan 2011 17:55:13 +0100
Subject: lib/util: fix rounding to page size in allocate_anonymous_shared()

metze
---
 lib/util/util.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'lib')

diff --git a/lib/util/util.c b/lib/util/util.c
index 42beed4bcb..8928026e80 100644
--- a/lib/util/util.c
+++ b/lib/util/util.c
@@ -941,10 +941,14 @@ void *allocate_anonymous_shared(size_t bufsz)
 {
 	void *buf;
 	size_t pagesz = getpagesize();
+	size_t pagecnt;
 
+	/* round up to full pages */
+	pagecnt = bufsz / pagesz;
 	if (bufsz % pagesz) {
-		bufsz = (bufsz + pagesz) % pagesz; /* round up to pagesz */
+		pagecnt += 1;
 	}
+	bufsz = pagesz * pagecnt;
 
 #ifdef MAP_ANON
 	/* BSD */
-- 
cgit