config/kernel-fsync.m4

   1 dnl #
   2 dnl # Check file_operations->fsync interface.
   3 dnl #
   4 AC_DEFUN([ZFS_AC_KERNEL_SRC_FSYNC], [
   5         ZFS_LINUX_TEST_SRC([fsync_without_dentry], [
   6                 #include <linux/fs.h>
   7
   8                 int test_fsync(struct file *f, int x) { return 0; }
   9
  10                 static const struct file_operations
  11                     fops __attribute__ ((unused)) = {
  12                         .fsync = test_fsync,
  13                 };
  14         ],[])
  15
  16         ZFS_LINUX_TEST_SRC([fsync_range], [
  17                 #include <linux/fs.h>
  18
  19                 int test_fsync(struct file *f, loff_t a, loff_t b, int c)
  20                     { return 0; }
  21
  22                 static const struct file_operations
  23                     fops __attribute__ ((unused)) = {
  24                         .fsync = test_fsync,
  25                 };
  26         ],[])
  27 ])
  28
  29 AC_DEFUN([ZFS_AC_KERNEL_FSYNC], [
  30         dnl #
  31         dnl # Linux 2.6.35 - Linux 3.0 API
  32         dnl #
  33         AC_MSG_CHECKING([whether fops->fsync() wants no dentry])
  34         ZFS_LINUX_TEST_RESULT([fsync_without_dentry], [
  35                 AC_MSG_RESULT([yes])
  36                 AC_DEFINE(HAVE_FSYNC_WITHOUT_DENTRY, 1,
  37                     [fops->fsync() without dentry])
  38         ],[
  39                 AC_MSG_RESULT([no])
  40
  41                 dnl #
  42                 dnl # Linux 3.1 - 3.x API
  43                 dnl #
  44                 AC_MSG_CHECKING([whether fops->fsync() wants range])
  45                 ZFS_LINUX_TEST_RESULT([fsync_range], [
  46                         AC_MSG_RESULT([range])
  47                         AC_DEFINE(HAVE_FSYNC_RANGE, 1,
  48                             [fops->fsync() with range])
  49                 ],[
  50                         ZFS_LINUX_TEST_ERROR([fops->fsync])
  51                 ])
  52         ])
  53 ])