Re: [PATCH v2] mm: add lazyfree folio to lru tail

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On 16.08.24 12:19, David Hildenbrand wrote:
On 16.08.24 09:48, gaoxu wrote:
Replace lruvec_add_folio with lruvec_add_folio_tail in the lru_lazyfree_fn:
1. The lazy-free folio is added to the LRU_INACTIVE_FILE list. If it's
     moved to the LRU tail, it allows for faster release lazy-free folio and
     reduces the impact on file refault.
2. When mglru is enabled, the lazy-free folio is reclaimabled and should be
     added using lru_gen_add_folio(lruvec, folio, true) instead of
     lru_gen_add_folio(lruvec, folio, false) for adding to gen.

With the change in place, workingset_refault_file is reduced by 33% in the
continuous startup testing of the applications in the Android system.


The patch subject does not match what you do in the patch -- at all.

"mm/swap: use lruvec_add_folio_tail() in lru_lazyfree()" ?

Ah, sorry, I read it too fast. Yours does make sense :)

(mm/swap might make sense, though)

--
Cheers,

David / dhildenb





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