From 64f7221958084b10f9f9c8b86639a96a73b106a2 Mon Sep 17 00:00:00 2001
From: Przemyslaw Skibinski <inikep@gmail.com>
Date: Mon, 13 Feb 2017 21:00:41 +0100
Subject: [PATCH] limit zlib compression level to Z_BEST_COMPRESSION

---
 programs/fileio.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/programs/fileio.c b/programs/fileio.c
index 430127771..9f1560b43 100644
--- a/programs/fileio.c
+++ b/programs/fileio.c
@@ -344,6 +344,8 @@ static unsigned long long FIO_compressGzFrame(cRess_t* ress, const char* srcFile
     z_stream strm;
     int ret;
 
+    if (compressionLevel > Z_BEST_COMPRESSION) compressionLevel = Z_BEST_COMPRESSION;
+
     strm.zalloc = Z_NULL;
     strm.zfree = Z_NULL;
     strm.opaque = Z_NULL;