diff options
Diffstat (limited to 'config/kernel-automount.m4')
| -rw-r--r-- | config/kernel-automount.m4 | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/config/kernel-automount.m4 b/config/kernel-automount.m4 new file mode 100644 index 000000000..972b09bd0 --- /dev/null +++ b/config/kernel-automount.m4 @@ -0,0 +1,23 @@ +dnl # +dnl # 2.6.37 API change +dnl # The dops->d_automount() dentry operation was added as a clean +dnl # solution to handling automounts. Prior to this cifs/nfs clients +dnl # which required automount support would abuse the follow_link() +dnl # operation on directories for this purpose. +dnl # +AC_DEFUN([ZFS_AC_KERNEL_AUTOMOUNT], [ + AC_MSG_CHECKING([whether dops->d_automount() exists]) + ZFS_LINUX_TRY_COMPILE([ + #include <linux/dcache.h> + ],[ + struct vfsmount *(*d_automount) (struct path *) = NULL; + struct dentry_operations dops __attribute__ ((unused)) = { + .d_automount = d_automount, + }; + ],[ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_AUTOMOUNT, 1, [dops->automount() exists]) + ],[ + AC_MSG_RESULT(no) + ]) +]) |