may_umount_tree    58 fs/autofs/expire.c 	if (!may_umount_tree(path.mnt)) {
may_umount_tree   162 fs/autofs/expire.c 	if (!may_umount_tree(mnt)) {
may_umount_tree  1329 fs/namespace.c EXPORT_SYMBOL(may_umount_tree);
may_umount_tree  2313 include/linux/fs.h extern int may_umount_tree(struct vfsmount *);