b=22683 store cl_env in task_struct for redhat kernel and liblustre.

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

diff --git a/lustre/autoconf/lustre-core.m4 b/lustre/autoconf/lustre-core.m4
index 3958e0b..9e6e33d 100644 (file)
--- a/lustre/autoconf/lustre-core.m4
+++ b/lustre/autoconf/lustre-core.m4
@@ -1912,6 +1912,7 @@ AC_DEFUN([LC_PROG_LINUX],
          LC_COOKIE_FOLLOW_LINK
          LC_FUNC_RCU
          LC_PERCPU_COUNTER
+         LC_TASK_CLENV_STORE
          LC_QUOTA64
          LC_4ARGS_VFS_SYMLINK
 
@@ -2399,6 +2400,30 @@ LB_LINUX_TRY_COMPILE([
 ])
 ])
 
+AC_DEFUN([LC_TASK_CLENV_TUX_INFO],
+[AC_MSG_CHECKING([tux_info])
+LB_LINUX_TRY_COMPILE([
+        #include <linux/sched.h>
+],[
+        struct task_struct task;
+        &task.tux_info;
+],[
+        AC_MSG_RESULT([yes])
+        AC_DEFINE(LL_TASK_CL_ENV, tux_info, [have tux_info])
+        have_task_clenv_store='yes'
+],[
+        AC_MSG_RESULT([no])
+])
+])
+
+AC_DEFUN([LC_TASK_CLENV_STORE],
+[
+        AC_MSG_CHECKING([if we can store cl_env in task_struct])
+        if test x$have_task_clenv_store != xyes ; then
+                LC_TASK_CLENV_TUX_INFO
+        fi
+])
+
 #
 # LC_CONFIGURE
 #