freebsd-dev/config/kernel-show-options.m4
Brian Behlendorf 47621f3d76 Linux 3.3 compat, sops->show_options()
The second argument of sops->show_options() was changed from a
'struct vfsmount *' to a 'struct dentry *'.  Add an autoconf check
to detect the API change and then conditionally define the expected
interface.  In either case we are only interested in the zfs_sb_t.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #549
2012-02-03 10:02:01 -08:00

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dnl #
dnl # Linux 3.3 API
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SHOW_OPTIONS], [
AC_MSG_CHECKING([whether sops->show_options() wants dentry])
ZFS_LINUX_TRY_COMPILE([
#include <linux/fs.h>
],[
int (*show_options) (struct seq_file *, struct dentry *) = NULL;
struct super_operations sops __attribute__ ((unused));
sops.show_options = show_options;
],[
AC_MSG_RESULT([yes])
AC_DEFINE(HAVE_SHOW_OPTIONS_WITH_DENTRY, 1,
[sops->show_options() with dentry])
],[
AC_MSG_RESULT([no])
])
])