Adding debian/patches/12_check_disk_fix_btrfs (Closes: #800345)

debian/patches/12_check_disk_fix_btrfs

@@ -0,0 +1,26 @@
+From 23436a18516e66469aeb4d81329d62ee4bfa7a51 Mon Sep 17 00:00:00 2001
+From: Klaus Ethgen <Klaus@Ethgen.de>
+Date: Wed, 28 Oct 2015 00:38:47 +0100
+Subject: [PATCH] Fixing the stuff that is broken on btrfs
+
+(Closes #1357)
+---
+ plugins/check_disk.c | 5 +----
+ 1 file changed, 1 insertion(+), 4 deletions(-)
+
+diff --git a/plugins/check_disk.c b/plugins/check_disk.c
+index 874a0ee0c..b3386842c 100644
+--- a/plugins/check_disk.c
++++ b/plugins/check_disk.c
+@@ -1038,10 +1038,7 @@ get_stats (struct parameter_list *p, struct fs_usage *fsp) {
+ 
+ void
+ get_path_stats (struct parameter_list *p, struct fs_usage *fsp) {
+-  /* 2007-12-08 - Workaround for Gnulib reporting insanely high available
+-  * space on BSD (the actual value should be negative but fsp->fsu_bavail
+-  * is unsigned) */
+-  p->available = fsp->fsu_bavail > fsp->fsu_bfree ? 0 : fsp->fsu_bavail;
++  p->available = fsp->fsu_bavail;
+   p->available_to_root = fsp->fsu_bfree;
+   p->used = fsp->fsu_blocks - fsp->fsu_bfree;
+   if (freespace_ignore_reserved) {

debian/patches/series

@@ -3,3 +3,4 @@
 # commited upstream
 10_check_curl_header
 11_check_icmp_source_ip
+12_check_disk_fix_btrfs