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-rw-r--r--config/kernel-generic_readlink.m422
1 files changed, 22 insertions, 0 deletions
diff --git a/config/kernel-generic_readlink.m4 b/config/kernel-generic_readlink.m4
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index 000000000..914431de4
--- /dev/null
+++ b/config/kernel-generic_readlink.m4
@@ -0,0 +1,22 @@
+dnl #
+dnl # 4.10 API
+dnl #
+dnl # NULL inode_operations.readlink implies generic_readlink(), which
+dnl # has been made static.
+dnl #
+AC_DEFUN([ZFS_AC_KERNEL_GENERIC_READLINK_GLOBAL], [
+ AC_MSG_CHECKING([whether generic_readlink is global])
+ ZFS_LINUX_TRY_COMPILE([
+ #include <linux/fs.h>
+ ],[
+ int i __attribute__ ((unused));
+
+ i = generic_readlink(NULL, NULL, 0);
+ ],[
+ AC_MSG_RESULT([yes])
+ AC_DEFINE(HAVE_GENERIC_READLINK, 1,
+ [generic_readlink is global])
+ ],[
+ AC_MSG_RESULT([no])
+ ])
+])