workingset_refault(9)

💅 workingset_refault(9) 💅

okay bestie, welcome to the Kernel API Manual — this one's workingset_refault(9) and it's lowkey the main character of page-cache comebacks. put your hair up, grab a lil snack, we're learning about refaults 🎀

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✨ NAME ✨

workingset_refault — evaluate the refault of a previously evicted folio. that's it, that's the vibe 🦋

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🌸 SYNOPSIS 🌸

void workingset_refault (struct folio *folio , void *shadow );

literally copy it exactly, i'm not playing 🙈

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🫶 ARGUMENTS 🫶

• folio — the freshly allocated replacement folio. the new bestie stepping into the group chat 💖
• shadow — shadow entry of the evicted folio. the receipts left behind by the one who got kicked out 😭

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👑 DESCRIPTION 👑

so here's the tea ☕: this function calculates and evaluates the refault distance of the previously evicted folio — and it does it in the context of the node and the memcg whose memory pressure caused the eviction. like, it's not just looking at the folio in a vacuum, it's checking who was being dramatic and squeezing memory in the first place, and on which node. context is everything, periodt 💅

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🔥 SEE ALSO 🔥

• Kernel file ./mm/workingset.c
• workingset_age_nonresident(9)
• workingset_eviction(9)
• workingset_test_recent(9)
• workingset_activation(9)

go read the whole friend group, they're all iconic in their own way 🧚

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and that's the page!! sign-off time 🌈 this lil number lives in ./mm, dated October 2026, and it's called workingset_refault(9) — remember it fondly, bestie 💜🦋✨