From a0357292b5faca0383ea13626d0564d4da275b06 Mon Sep 17 00:00:00 2001
From: Karel Zak
Date: Tue, 20 Mar 2018 11:42:34 +0100
Subject: fstrim: fix fs.h and mount.h collision

Unfortunately, old version of the file linux/fs.h defines MS_*
macros, so the file cannot be included together with sys/mount.h.

We include sys/mount.h from libmount.h now.

Signed-off-by: Karel Zak <kzak@redhat.com>
---
 configure.ac       | 11 ++++++++++-
 sys-utils/fstrim.c |  5 ++++-
 2 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/configure.ac b/configure.ac
index f828ae59b..0dbabf5d1 100644
--- a/configure.ac
+++ b/configure.ac
@@ -280,6 +280,16 @@ AC_CHECK_HEADERS([ \
 	utmpx.h \
 ])
 
+# There is a collision in old kernel-headers. The both files mount.h and fs.h
+# define MS_* macros. Fixed by kernel commit e462ec50cb5fad19f6003a3d8087f4a0945dd2b1.
+#
+AC_CHECK_HEADERS([linux/fs.h ], [], [],
+ [#ifdef HAVE_SYS_MOUNT_H
+   # include <linux/fs.h>
+   # include <sys/mount.h>
+  #endif
+])
+
 AC_CHECK_HEADERS([linux/gsmmux.h ], [], [],
  [#ifdef LINUX_GSMMUX_H
    # include <linux/gsmmux.h>
@@ -306,7 +316,6 @@ AC_CHECK_HEADERS([langinfo.h],
 		[AM_CONDITIONAL([HAVE_LANGINFO], [true])],
 		[AM_CONDITIONAL([HAVE_LANGINFO], [false])])
 
-
 AC_MSG_CHECKING([whether langinfo.h defines ALTMON_x constants])
 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 	#include <langinfo.h>
diff --git a/sys-utils/fstrim.c b/sys-utils/fstrim.c
index 98708d533..ca8cf256d 100644
--- a/sys-utils/fstrim.c
+++ b/sys-utils/fstrim.c
@@ -35,7 +35,10 @@
 
 #include <sys/ioctl.h>
 #include <sys/stat.h>
-#include <linux/fs.h>
+
+#ifdef HAVE_SYS_FS_H
+# include <linux/fs.h>
+#endif
 
 #include "nls.h"
 #include "strutils.h"
-- 
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