include/linux/memcontrol.h

352 	/* page->memcg_data is a pointer to an objcgs vector */
388 	unsigned long memcg_data = folio->memcg_data;
391 	VM_BUG_ON_FOLIO(memcg_data & MEMCG_DATA_OBJCGS, folio);
392 	VM_BUG_ON_FOLIO(memcg_data & MEMCG_DATA_KMEM, folio);
394 	return (struct mem_cgroup *)(memcg_data & ~MEMCG_DATA_FLAGS_MASK);
409 	unsigned long memcg_data = folio->memcg_data;
412 	VM_BUG_ON_FOLIO(memcg_data & MEMCG_DATA_OBJCGS, folio);
413 	VM_BUG_ON_FOLIO(!(memcg_data & MEMCG_DATA_KMEM), folio);
415 	return (struct obj_cgroup *)(memcg_data & ~MEMCG_DATA_FLAGS_MASK);
464 	unsigned long memcg_data = READ_ONCE(folio->memcg_data);
469 	if (memcg_data & MEMCG_DATA_KMEM) {
472 		objcg = (void *)(memcg_data & ~MEMCG_DATA_FLAGS_MASK);
476 	return (struct mem_cgroup *)(memcg_data & ~MEMCG_DATA_FLAGS_MASK);
504 	 * Because folio->memcg_data might be changed asynchronously
507 	unsigned long memcg_data = READ_ONCE(folio->memcg_data);
509 	if (memcg_data & MEMCG_DATA_OBJCGS)
512 	if (memcg_data & MEMCG_DATA_KMEM) {
515 		objcg = (void *)(memcg_data & ~MEMCG_DATA_FLAGS_MASK);
519 	return (struct mem_cgroup *)(memcg_data & ~MEMCG_DATA_FLAGS_MASK);
555 	VM_BUG_ON_FOLIO(folio->memcg_data & MEMCG_DATA_OBJCGS, folio);
556 	return folio->memcg_data & MEMCG_DATA_KMEM;