collapse_max_ptes_swap(9)

✨ collapse_max_ptes_swap(9) ✨

okay so bestie, welcome to this page from the Kernel API Manual 💅 it's giving kernel-internals realness, and we're talking about collapse_max_ptes_swap — no cap, it's here to do one very specific job.

---

🎀 NAME 🎀

collapse_max_ptes_swap — calculate the maximum allowed non-present PTEs or the maximum allowed non-present pagecache entries for the given collapse operation. 🫶

---

🌈 SYNOPSIS 🌈

unsigned int collapse_max_ptes_swap (struct collapse_control *cc ,
       unsigned int order );

---

🦋 ARGUMENTS 🦋

• cc — the collapse control struct. literally the collapse control struct, bestie 💖
• order — the folio order being collapsed to. yes, that order 👑

---

💖 RETURN 💖

maximum number of non-present PTEs or the maximum allowed non-present pagecache entries for the collapse operation. that's the number it hands back ✨

---

🔥 SEE ALSO 🔥

• Kernel file ./mm/khugepaged.c struct khugepaged_scan(9)
• collapse_max_ptes_none(9)
• collapse_max_ptes_shared(9)
• collapse_pte_mapped_thp(9)
• collapse_file(9)

---

and that's the whole vibe 💅 this page comes from ./mm and is dated October 2026 — mwah, go forth and collapse responsibly 🎀🫶