On (24/02/27 03:00), chengming.zhou@xxxxxxxxx wrote: > > We only need to save the position (pfn + obj_idx) in the handle, don't > need to save tag bit in handle. So one more bit can be used as obj_idx. [..] > mm/zsmalloc: don't need to save tag bit in handle Does this mean "don't need to reserve LSB for tag"? We still save allocated tag in the handle, that's what handle |= OBJ_ALLOCATED_TAG; does. > Actually, the tag bit is only useful in zspage's memory space, to tell > if an object is allocated or not. I'm not completely sure if I follow this sentence.
