3775 	unsigned long new_flags, old_flags = READ_ONCE(folio->flags);  in folio_update_gen()  local
3782 		if (!(old_flags & LRU_GEN_MASK)) {  in folio_update_gen()
3784 			new_flags = old_flags | BIT(PG_referenced);  in folio_update_gen()
3788 		new_flags = old_flags & ~(LRU_GEN_MASK | LRU_REFS_MASK | LRU_REFS_FLAGS);  in folio_update_gen()
3790 	} while (!try_cmpxchg(&folio->flags, &old_flags, new_flags));  in folio_update_gen()
3792 	return ((old_flags & LRU_GEN_MASK) >> LRU_GEN_PGOFF) - 1;  in folio_update_gen()
3801 	unsigned long new_flags, old_flags = READ_ONCE(folio->flags);  in folio_inc_gen()  local
3803 	VM_WARN_ON_ONCE_FOLIO(!(old_flags & LRU_GEN_MASK), folio);  in folio_inc_gen()
3806 		new_gen = ((old_flags & LRU_GEN_MASK) >> LRU_GEN_PGOFF) - 1;  in folio_inc_gen()
3813 		new_flags = old_flags & ~(LRU_GEN_MASK | LRU_REFS_MASK | LRU_REFS_FLAGS);  in folio_inc_gen()
3818 	} while (!try_cmpxchg(&folio->flags, &old_flags, new_flags));  in folio_inc_gen()