From f2b5852872a0dca7a11b298bd29f0f70b16b9ad4 Mon Sep 17 00:00:00 2001
From: Con Kolivas <kernel@kolivas.org>
Date: Tue, 30 Nov 2010 11:22:02 +1100
Subject: [PATCH] Fix divide by zero error when a file is smaller than the page
 size and compressed with -U.

---
 rzip.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/rzip.c b/rzip.c
index b725abc..fb95247 100644
--- a/rzip.c
+++ b/rzip.c
@@ -105,6 +105,8 @@ struct sliding_buffer {
 static void round_to_page(i64 *size)
 {
 	*size -= *size % control.page_size;
+	if (unlikely(!*size))
+		*size = control.page_size;
 }
 
 static void remap_low_sb(void)