zap_huge_pmd(9)

💖 zap_huge_pmd(9) 💖

💅 NAME 💅

okay so this is the zap_huge_pmd(9) page from the Kernel API Manual, and the function is literally zap_huge_pmd — it zaps a huge THP which is of PMD size. That's the whole main-character job, periodt. ✨

🛠️ SYNOPSIS 🛠️

bool zap_huge_pmd (struct mmu_gather *tlb , struct vm_area_struct *vma ,
       pmd_t *pmd , unsigned long addr );

🎀 ARGUMENTS 🎀

• tlb — the MMU gather TLB state associated with the operation. It's the vibe context for the zap, basically.
• vma — the VMA containing the range to zap.
• pmd — a pointer to the leaf PMD entry. Leaf. PMD. Entry. Got it? 💅
• addr — the virtual address for the range to zap.

🔥 RETURN 🔥

It gives you true on success, and false otherwise. That's it, bestie — no dramatic plot twist. ✅

🦋 SEE ALSO 🦋

The page points at Kernel file ./mm/huge_memory.c, plus these lovely references:

• vmf_insert_pfn_pmd(9)
• vmf_insert_pfn_pud(9)
• vmf_insert_folio_pud(9)
• touch_pmd(9)
• __split_unmapped_folio(9)
• folio_check_splittable(9)
• __folio_split(9)
• folio_split_unmapped(9)
• folio_split(9)
• min_order_for_split(9)

Catch you later, bestie! Source/version: ./mm. Date: October 2026. Footer title: zap_huge_pmd(9). Slay and stay huge 💅🎀💖