config/kernel-commit-metadata.m4

   1 dnl #
   2 dnl # 2.6.33 API change
   3 dnl # Added eops->commit_metadata() callback to allow the underlying
   4 dnl # filesystem to determine the most efficient way to commit the inode.
   5 dnl # Prior to this the nfs server would issue an explicit fsync().
   6 dnl #
   7 AC_DEFUN([ZFS_AC_KERNEL_COMMIT_METADATA], [
   8         AC_MSG_CHECKING([whether eops->commit_metadata() exists])
   9         ZFS_LINUX_TRY_COMPILE([
  10                 #include <linux/exportfs.h>
  11                 int commit_metadata(struct inode *inode) { return 0; }
  12                 static struct export_operations eops __attribute__ ((unused))={
  13                         .commit_metadata = commit_metadata,
  14                 };
  15         ],[
  16         ],[
  17                 AC_MSG_RESULT(yes)
  18                 AC_DEFINE(HAVE_COMMIT_METADATA, 1,
  19                           [eops->commit_metadata() exists])
  20         ],[
  21                 AC_MSG_RESULT(no)
  22         ])
  23 ])