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-rw-r--r--config/kernel-kobj-name-len.m421
1 files changed, 21 insertions, 0 deletions
diff --git a/config/kernel-kobj-name-len.m4 b/config/kernel-kobj-name-len.m4
new file mode 100644
index 000000000..5363a41ca
--- /dev/null
+++ b/config/kernel-kobj-name-len.m4
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+dnl #
+dnl # 2.6.27 API change,
+dnl # kobject KOBJ_NAME_LEN static limit removed. All users of this
+dnl # constant were removed prior to 2.6.27, but to be on the safe
+dnl # side this check ensures the constant is undefined.
+dnl #
+AC_DEFUN([ZFS_AC_KERNEL_KOBJ_NAME_LEN], [
+ AC_MSG_CHECKING([whether kernel defines KOBJ_NAME_LEN])
+ ZFS_LINUX_TRY_COMPILE([
+ #include <linux/kobject.h>
+ ],[
+ int val;
+ val = KOBJ_NAME_LEN;
+ ],[
+ AC_MSG_RESULT([yes])
+ AC_DEFINE(HAVE_KOBJ_NAME_LEN, 1,
+ [kernel defines KOBJ_NAME_LEN])
+ ],[
+ AC_MSG_RESULT([no])
+ ])
+])