config/kernel-truncate-range.m4

   1 dnl #
   2 dnl # 3.5.0 API change
   3 dnl # torvalds/linux@17cf28afea2a1112f240a3a2da8af883be024811 removed
   4 dnl # truncate_range(). The file hole punching functionality is now
   5 dnl # provided by fallocate()
   6 dnl #
   7 AC_DEFUN([ZFS_AC_KERNEL_TRUNCATE_RANGE], [
   8         AC_MSG_CHECKING([whether iops->truncate_range() exists])
   9         ZFS_LINUX_TRY_COMPILE([
  10                 #include <linux/fs.h>
  11                 void truncate_range(struct inode *inode, loff_t start,
  12                                     loff_t end) { return; }
  13                 static struct inode_operations iops __attribute__ ((unused)) = {
  14                         .truncate_range = truncate_range,
  15                 };
  16         ],[
  17         ],[
  18                 AC_MSG_RESULT(yes)
  19                 AC_DEFINE(HAVE_INODE_TRUNCATE_RANGE, 1,
  20                           [iops->truncate_range() exists])
  21         ],[
  22                 AC_MSG_RESULT(no)
  23         ])
  24 ])