config/kernel-file-dentry.m4

   1 dnl #
   2 dnl # 4.1 API change
   3 dnl # struct access file->f_path.dentry was replaced by accessor function
   4 dnl # since fix torvalds/linux@4bacc9c9234c ("overlayfs: Make f_path always
   5 dnl # point to the overlay and f_inode to the underlay").
   6 dnl #
   7 AC_DEFUN([ZFS_AC_KERNEL_FILE_DENTRY], [
   8         AC_MSG_CHECKING([whether file_dentry() is available])
   9         ZFS_LINUX_TRY_COMPILE([
  10                 #include <linux/fs.h>
  11         ],[
  12                 struct file *f = NULL;
  13                 file_dentry(f);
  14         ],[
  15                 AC_MSG_RESULT(yes)
  16                 AC_DEFINE(HAVE_FILE_DENTRY, 1, [file_dentry() is available])
  17         ],[
  18                 AC_MSG_RESULT(no)
  19         ])
  20 ])