LU-1994 llite: atomic_open support

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

diff --git a/lustre/autoconf/lustre-core.m4 b/lustre/autoconf/lustre-core.m4
index 109d528..4cc4bbf 100644 (file)
--- a/lustre/autoconf/lustre-core.m4
+++ b/lustre/autoconf/lustre-core.m4
@@ -2176,6 +2176,25 @@ EXTRA_KCFLAGS="$tmp_flags"
 ])
 
 #
+# 3.6 vfs adds iop->atomic_open
+#
+AC_DEFUN([LC_HAVE_IOP_ATOMIC_OPEN],
+[AC_MSG_CHECKING([if iop has atomic_open])
+LB_LINUX_TRY_COMPILE([
+       #include <linux/fs.h>
+],[
+       struct inode_operations iop;
+       iop.atomic_open = NULL;
+],[
+       AC_DEFINE(HAVE_IOP_ATOMIC_OPEN, 1,
+                 [have iop atomic_open])
+       AC_MSG_RESULT([yes])
+],[
+       AC_MSG_RESULT([no])
+])
+])
+
+#
 # LC_PROG_LINUX
 #
 # Lustre linux kernel checks
@@ -2348,6 +2367,7 @@ AC_DEFUN([LC_PROG_LINUX],
         # 3.6
         LC_HAVE_DENTRY_D_ALIAS_HLIST
         LC_DENTRY_OPEN_USE_PATH
+        LC_HAVE_IOP_ATOMIC_OPEN
 
         #
         if test x$enable_server = xyes ; then