void put_files_struct(struct files_struct *files)
{
	if (atomic_dec_and_test(&files->count)) {
		struct fdtable *fdt = close_files(files);

		/* free the arrays if they are not embedded */
		if (fdt != &files->fdtab)
			__free_fdtable(fdt);
		kmem_cache_free(files_cachep, files);
	}
}
void put_files_struct(struct files_struct *files)
{
	if (atomic_dec_and_test(&files->count)) {
		struct fdtable *fdt = close_files(files);

		 
		if (fdt != &files->fdtab)
			__free_fdtable(fdt);
		kmem_cache_free(files_cachep, files);
	}
}