Re: [PATCH] mm: move folio LRU helpers out of swap

[Johannes Weiner]

On Tue, Apr 07, 2026 at 07:00:02PM +0800, Jianyue Wu wrote:
> All allocated folios are added into lru lists for later reclaim whether
> they are file or anonymous folios. However those folio lru operation codes
> are put in mm/swap.c which is not so appropriate. Because swap code is
> only for anonymous folios.

Ironically, the only thing that doesn't fit in this file is the swap
stuff. The page_cluster & sysctl should be static in swap_state.c.

The rest seems thematically relatively clean - infrastructure for
managing folio lifetime. swap.c is not the best name for it, but short
of finding a very clear improvement I'd just leave it alone.