kho_unpreserve_folio(9)

✨ kho_unpreserve_folio(9) ✨

okay so bestie, welcome to the Kernel API Manual page for kho_unpreserve_folio — yes the (9) means it's a kernel-internal function, we're in the big leagues now 💅

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🌸 NAME 🌸

kho_unpreserve_folio — unpreserve a folio. that's it. that's the whole vibe. 🎀

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🦋 SYNOPSIS 🦋

void kho_unpreserve_folio (struct folio *folio );

literally one argument, returns nothing, no cap. lowkey iconic for how simple it is ✨

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💖 ARGUMENTS 💖

• folio — the folio to unpreserve. that's the one you're un-preserving. the star of the show. 🫶

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👑 DESCRIPTION 👑

so here's the tea ☕ — this function instructs KHO to unpreserve a folio that was preserved by kho_preserve_folio before. like, it's the undo button, but only for things you actually did. 🙈

⚠️ bestie listen — the provided folio (pfn and order) must exactly match a previously preserved folio. exactly. not "close enough", not "same neighborhood". exact match or it's not gonna slay. 💀

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🔥 SEE ALSO 🔥

Kernel file ./kernel/liveupdate/kexec_handover.c — that's where the magic lives, go read it, iykyk 📖

• kho_encode_radix_key(9)
• kho_decode_radix_key(9)
• kho_radix_add_key(9)
• kho_radix_del_key(9)
• kho_radix_init_tree(9)
• kho_radix_destroy_tree(9)
• kho_radix_walk_tree(9)
• kho_restore_folio(9)
• kho_restore_pages(9)
• kho_reserve_scratch(9)
• kho_add_subtree(9)
• kho_preserve_folio(9)
• kho_preserve_pages(9)
• kho_unpreserve_pages(9)
• kho_preserve_vmalloc(9)
• kho_unpreserve_vmalloc(9)
• kho_restore_vmalloc(9)
• kho_alloc_preserve(9)
• kho_unpreserve_free(9)
• kho_restore_free(9)
• is_kho_boot(9)
• kho_retrieve_subtree(9)

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and that's the whole page, bestie 🍓 this gem comes to you from ./kernel/liveupdate, dropped in October 2026 — go forth and unpreserve responsibly, mwah 💜🧚‍♀️