From 4b357e15876b730343db08719c877fdb45b6ad42 Mon Sep 17 00:00:00 2001
From: Michael Marineau <michael.marineau@coreos.com>
Date: Thu, 15 Aug 2013 11:50:57 -0400
Subject: build-sys: Add configure check for linux/btrfs.h

btrfs.h was added to uapi in Linux 3.9. To fix building with older
header versions this adds a configure check for the header and re-adds
btrfs definitions to missing.h which was removed in bed2e820 along with
two other ioctls used by gpt-auto-generator.

[ Apparently, btrfs.h was only added recently:
  http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=55e301fd57a6239ec14b91a1cf2e70b3dd135194
  let's re-add it for now -- kay ]
---
 src/readahead/readahead-collect.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'src/readahead')

diff --git a/src/readahead/readahead-collect.c b/src/readahead/readahead-collect.c
index 658c230d65..5d37bb75f3 100644
--- a/src/readahead/readahead-collect.c
+++ b/src/readahead/readahead-collect.c
@@ -38,13 +38,16 @@
 #include <sys/mman.h>
 #include <linux/fs.h>
 #include <linux/fiemap.h>
-#include <linux/btrfs.h>
 #include <sys/ioctl.h>
 #include <sys/vfs.h>
 #include <getopt.h>
 #include <sys/inotify.h>
 #include <math.h>
 
+#ifdef HAVE_LINUX_BTRFS_H
+#include <linux/btrfs.h>
+#endif
+
 #ifdef HAVE_FANOTIFY_INIT
 #include <sys/fanotify.h>
 #endif
-- 
cgit v1.2.3-54-g00ecf