pud_is_huge(9)

💅 pud_is_huge(9) — like, the kernel API manual bestie ✨

okay so welcome to pud_is_huge, straight out of the Kernel API Manual section 9 (that's the kernel-API-girlies section, iykyk 🎀). she's a little function, she answers one (1) question, and she does it flawlessly. periodt.

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✨ SYNOPSIS ✨

bool pud_is_huge (pud_t pud );

like, that's it. that's the whole vibe. one argument in, a bool out, no drama 💅

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🌸 ARGUMENTS 🌸

• pud — the PUD you want to check. that's the one. hand her the PUD and she'll tell you what's up 🫶

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🦋 DESCRIPTION 🦋

so she's basically the same energy as pmd_is_huge, no cap — same job, same vibe, same "is this a huge entry or what" energy. the ONLY difference?

she does it at the PUD level instead of the PMD level. that's it. that's the whole plot twist 🧚✨

she's checking whether this PUD is either a huge PUD entry or a software leaf entry — those are the two things she's looking for, bestie. don't forget the software leaf part, it's lowkey important 👑

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🔥 RETURN 🔥

• true — yup, this PUD is huge 💖 slay.
• false — nope, not huge. and that's fine too 🌈

literally binary. iconic behaviour.

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👑 SEE ALSO 👑

all the sister functions and the kernel file she lives near:

• Kernel file ./include/linux/huge_mm.h 📁 (that's her home, her whole address)
• thp_vma_allowable_orders(9)
• pmd_is_huge(9) — her cousin, same energy, different level 💫
• folio_test_pmd_mappable(9)
• largest_zero_folio(9)

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⚠️ real talk: pud_is_huge returns true for a huge PUD entry or a software leaf entry. both count. don't @ me, that's just what the manpage says 💀

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kay that's the whole page, bestie!! this one lives in ./include/linux, dated October 2026, and she's filed under pud_is_huge(9) — mwah, go check ur PUDs 💅💖🎀