DEVEL15-update-tasklist-lock-test-20070226

FIXES 54916

make the tasklist lock test actually detect GPL stupidity

(cherry picked from commit bed42291bcc16065f23e964b64d60090ffaa96f9)

diff --git a/src/cf/linux-test4.m4 b/src/cf/linux-test4.m4
index 438d7a2299bd8b7b0597f7e831240a5785f3ba93..dff6dbfd0f72f0024f8b8b3f07f94508ca989cef 100644 (file)
--- a/src/cf/linux-test4.m4
+++ b/src/cf/linux-test4.m4
@@ -6,6 +6,7 @@ AC_DEFUN([LINUX_EXPORTS_TASKLIST_LOCK], [
 #include <linux/sched.h>],
 [
 extern rwlock_t tasklist_lock __attribute__((weak)); 
+read_lock(&tasklist_lock);
 ],
       ac_cv_linux_exports_tasklist_lock=yes,
       ac_cv_linux_exports_tasklist_lock=no)])