zs_lookup_class_index(9)

📦 version 7.3.1, in nixpkgs unstable

💖 zs_lookup_class_index(9) 💖

okay so this is a page from the Kernel API Manual, section 9, bestie — and it's about zs_lookup_class_index. yes it's a mouthful, no we're not renaming it, it's iconic as is 💅

✨ NAME ✨

zs_lookup_class_index — returns the index of the zsmalloc size_class that holds objects of the provided size 🎀

🌸 SYNOPSIS 🌸

unsigned int zs_lookup_class_index (struct zs_pool *pool , unsigned int size );

🦋 ARGUMENTS 🦋

  • pool — the zsmalloc pool you wanna use, like the lil container it all lives in 🫶
  • size — the object size, aka how big the thing is

💜 CONTEXT 💜

Any context. literally any. no vibe restrictions here ✨

⭐ RETURN ⭐

It gives you back the index of the zsmalloc size_class that holds objects of the provided size. that's the whole flex 👑

🌈 SEE ALSO 🌈

Kernel file ./mm/zsmalloc.c, plus these besties:

ngl, if you're poking around zsmalloc internals, go read the source too — the manpage is the trailer, ./mm/zsmalloc.c is the whole movie 🍓

and that's the page!! brought to you by the ./mm directory, dated October 2026, posted under zs_lookup_class_index(9) — mwah, go slay ur kernel work bestie 💖🎀🧚

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