On Tue, Oct 17, 2023 at 03:44:35PM +0000, chengming.zhou@xxxxxxxxx wrote: > We change slab->__unused to slab->flags to use it as SLUB_FLAGS, which > now only include SF_NODE_PARTIAL flag. It indicates whether or not the > slab is on node partial list. This is an unnecessarily complex solution. As with the pfmemalloc bit, we can reuse the folio flags for a few flags. I would recommend the PG_workingset bit for this purpose.
