nfs_map_string_to_numeric
if (!nfs_map_string_to_numeric((char *)p, len, id))
EXPORT_SYMBOL_GPL(nfs_map_string_to_numeric);
if (!nfs_map_string_to_numeric(name, namelen, &id))
if (!nfs_map_string_to_numeric(name, namelen, &id))
int nfs_map_string_to_numeric(const char *name, size_t namelen, __u32 *res);