lruvec_lru_size(9)

💖 lruvec_lru_size(9) 💖

okay bestie, welcome to the Kernel API Manual — this one's lruvec_lru_size(9) and it's literally the page that tells you how many pages are chilling on a given LRU list. no cap. 🦋

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✨ NAME ✨

lruvec_lru_size — returns the number of pages on the given LRU list. that's it, that's the whole vibe 🎀

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🌸 SYNOPSIS 🌸

unsigned long lruvec_lru_size (struct lruvec *lruvec , enum lru_list lru
, int zone_idx );

she takes three things and gives you back an unsigned long. slay. 💅

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🫶 ARGUMENTS 🫶

• lruvec — the lru vector. your main character struct, the whole reason we're here 👑
• lru — which lru to use. pick your fighter ✨
• zone_idx — the zones to consider. and listen, if you want the whole LRU list, pass MAX_NR_ZONES - 1 — that's the move, iykyk 💯

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🔥 SEE ALSO 🔥

• Kernel file ./mm/vmscan.c — plus these iconic little friends:
  • writeback_throttling_sane(9)
  • remove_mapping(9)
  • folio_putback_lru(9)
  • folio_isolate_lru(9)
  • check_move_unevictable_folios(9)

go read them, they're all lowkey obsessed with the same memory-reclaiming lifestyle 🌈

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bestie heads up: zone_idx really does matter — MAX_NR_ZONES - 1 is the "give me everything" option, anything else is you being specific 🙈

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k bye, this page came from ./mm, dated October 2026 — mwah, drink some water, and go count some pages 💜🧚‍♀️🍓