config/kernel-lseek-execute.m4

   1 dnl #
   2 dnl # 3.11 API change
   3 dnl # lseek_execute helper exported
   4 dnl #
   5 AC_DEFUN([ZFS_AC_KERNEL_LSEEK_EXECUTE],
   6         [AC_MSG_CHECKING([whether lseek_execute() is available])
   7         ZFS_LINUX_TRY_COMPILE_SYMBOL([
   8                 #include <linux/fs.h>
   9         ], [
  10                 struct file *fp __attribute__ ((unused)) = NULL;
  11                 struct inode *ip __attribute__ ((unused)) = NULL;
  12                 loff_t offset __attribute__ ((unused)) = 0;
  13                 loff_t maxsize __attribute__ ((unused)) = 0;
  14
  15                 lseek_execute(fp, ip, offset, maxsize);
  16         ], [lseek_exclusive], [fs/read_write.c], [
  17                 AC_MSG_RESULT(yes)
  18                 AC_DEFINE(HAVE_LSEEK_EXECUTE, 1,
  19                           [lseek_execute() is available])
  20         ], [
  21                 AC_MSG_RESULT(no)
  22         ])
  23 ])