softleaf_to_pfn(9)

🦋 softleaf_to_pfn(9) — the Kernel API Manual, bestie edition ✨

okay so picture this: you're deep in ./include/linux/leafops.h land (that's the Kernel file, 💅) and you've got yourself a leaf entry. this little function right here is the one that pulls the PFN out of it. literally that simple. no cap.

🌸 SYNOPSIS 🌸

unsigned long softleaf_to_pfn (softleaf_t entry );

🎀 ARGUMENTS 🎀

• entry — the leaf entry you're decoding, queen. ⚠️ but heads up: softleaf_has_pfn(entry) must return true. like, that's non-negotiable. check it first, bestie, fr fr.

👑 RETURN 👑

the PFN associated with the leaf entry. that's it, that's the whole vibe. ✨

🔥 SEE ALSO 🔥

the whole squad, gathered in ./include/linux/leafops.h — go say hi to all of them:

• softleaf_mk_none(9)
• softleaf_from_pte(9)
• softleaf_to_pte(9)
• softleaf_from_pmd(9)
• softleaf_to_pmd(9)
• softleaf_is_none(9)
• softleaf_type(9)
• softleaf_is_swap(9)
• softleaf_is_migration_write(9)
• softleaf_is_migration_read(9)
• softleaf_is_migration_read_exclusive(9)
• softleaf_is_migration(9)
• softleaf_is_device_private_write(9)
• softleaf_is_device_private(9)
• softleaf_is_device_exclusive(9)
• softleaf_is_hwpoison(9)
• softleaf_is_marker(9)
• softleaf_to_marker(9)
• softleaf_has_pfn(9)
• softleaf_to_page(9)
• softleaf_to_folio(9)
• softleaf_is_poison_marker(9)
• softleaf_is_guard_marker(9)
• softleaf_is_uffd_wp_marker(9)
• softleaf_is_migration_young(9)
• softleaf_is_migration_dirty(9)
• pte_is_marker(9)
• pte_is_uffd_wp_marker(9)
• pte_is_uffd_marker(9)
• pmd_is_device_private_entry(9)
• pmd_is_migration_entry(9)
• softleaf_is_valid_pmd_entry(9)
• pmd_is_valid_softleaf(9)
• pmd_to_softleaf_folio(9)

mwah 💜 that's the whole page, my love — this one lives over in ./include/linux and it's dated October 2026, so mark your calendar bestie, and go get that PFN. 🫶