LU-2850 compat: posix_acl_{to,from}_xattr take user_namespace

[fs/lustre-release.git] / lustre / autoconf / lustre-core.m4

diff --git a/lustre/autoconf/lustre-core.m4 b/lustre/autoconf/lustre-core.m4
index 8f92859..067090f 100644 (file)
--- a/lustre/autoconf/lustre-core.m4
+++ b/lustre/autoconf/lustre-core.m4
@@ -2233,6 +2233,25 @@ LB_LINUX_TRY_COMPILE([
 ])
 
 #
+# 3.7 posix_acl_{to,from}_xattr take struct user_namespace
+#
+AC_DEFUN([LC_HAVE_POSIXACL_USER_NS],
+[AC_MSG_CHECKING([if posix_acl_to_xattr takes struct user_namespace])
+LB_LINUX_TRY_COMPILE([
+       #include <linux/fs.h>
+       #include <linux/posix_acl_xattr.h>
+],[
+       posix_acl_to_xattr((struct user_namespace *)NULL, NULL, NULL, 0);
+],[
+       AC_DEFINE(HAVE_POSIXACL_USER_NS, 1,
+                 [posix_acl_to_xattr takes struct user_namespace])
+       AC_MSG_RESULT([yes])
+],[
+       AC_MSG_RESULT([no])
+])
+])
+
+#
 # LC_PROG_LINUX
 #
 # Lustre linux kernel checks
@@ -2414,6 +2433,8 @@ AC_DEFUN([LC_PROG_LINUX],
         LC_DENTRY_OPEN_USE_PATH
         LC_HAVE_IOP_ATOMIC_OPEN
 
+        # 3.7
+        LC_HAVE_POSIXACL_USER_NS
         #
         if test x$enable_server = xyes ; then
                AC_DEFINE(HAVE_SERVER_SUPPORT, 1, [support server])