config/kernel-fallocate.m4

   1 dnl #
   2 dnl # Linux 2.6.38 - 3.x API
   3 dnl #
   4 AC_DEFUN([SPL_AC_KERNEL_FILE_FALLOCATE], [
   5         AC_MSG_CHECKING([whether fops->fallocate() exists])
   6         SPL_LINUX_TRY_COMPILE([
   7                 #include <linux/fs.h>
   8         ],[
   9                 long (*fallocate) (struct file *, int, loff_t, loff_t) = NULL;
  10                 struct file_operations fops __attribute__ ((unused)) = {
  11                         .fallocate = fallocate,
  12                 };
  13         ],[
  14                 AC_MSG_RESULT(yes)
  15                 AC_DEFINE(HAVE_FILE_FALLOCATE, 1, [fops->fallocate() exists])
  16         ],[
  17                 AC_MSG_RESULT(no)
  18         ])
  19 ])
  20 dnl #
  21 dnl # Linux 2.6.x - 2.6.37 API
  22 dnl #
  23 AC_DEFUN([SPL_AC_KERNEL_INODE_FALLOCATE], [
  24         AC_MSG_CHECKING([whether iops->fallocate() exists])
  25         SPL_LINUX_TRY_COMPILE([
  26                 #include <linux/fs.h>
  27         ],[
  28                 long (*fallocate) (struct inode *, int, loff_t, loff_t) = NULL;
  29                 struct inode_operations fops __attribute__ ((unused)) = {
  30                         .fallocate = fallocate,
  31                 };
  32         ],[
  33                 AC_MSG_RESULT(yes)
  34                 AC_DEFINE(HAVE_INODE_FALLOCATE, 1, [fops->fallocate() exists])
  35         ],[
  36                 AC_MSG_RESULT(no)
  37         ])
  38 ])
  39
  40 dnl #
  41 dnl # PaX Linux 2.6.38 - 3.x API
  42 dnl #
  43 AC_DEFUN([SPL_AC_PAX_KERNEL_FILE_FALLOCATE], [
  44         AC_MSG_CHECKING([whether fops->fallocate() exists])
  45         SPL_LINUX_TRY_COMPILE([
  46                 #include <linux/fs.h>
  47         ],[
  48                 long (*fallocate) (struct file *, int, loff_t, loff_t) = NULL;
  49                 struct file_operations_no_const fops __attribute__ ((unused)) = {
  50                         .fallocate = fallocate,
  51                 };
  52         ],[
  53                 AC_MSG_RESULT(yes)
  54                 AC_DEFINE(HAVE_FILE_FALLOCATE, 1, [fops->fallocate() exists])
  55         ],[
  56                 AC_MSG_RESULT(no)
  57         ])
  58 ])
  59
  60 dnl #
  61 dnl # The fallocate callback was moved from the inode_operations
  62 dnl # structure to the file_operations structure.
  63 dnl #
  64 AC_DEFUN([SPL_AC_KERNEL_FALLOCATE], [
  65         SPL_AC_KERNEL_FILE_FALLOCATE
  66         SPL_AC_KERNEL_INODE_FALLOCATE
  67         SPL_AC_PAX_KERNEL_FILE_FALLOCATE
  68 ])