__netmem_to_page(9)

💅 __netmem_to_page(9) — brought to you by the Kernel API Manual ✨

okay so bestie, this page is literally called __netmem_to_page(9), and it is giving “I know exactly what I’m doing, so I’m skipping the safety check” energy 💅🔥 no cap.

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🌸 NAME 🌸

__netmem_to_page — unsafely get pointer to the &page backing @netmem 🫶

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✨ SYNOPSIS ✨

struct page * __netmem_to_page (netmem_ref netmem );

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🎀 ARGUMENTS 🎀

• netmem — the netmem reference to convert, periodt 💖

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🦋 DESCRIPTION 🦋

It’s the unsafe version of netmem_to_page 😭💀. When netmem is always page-backed — like, for example, when it’s a header buffer — this one performs faster and generates smaller object code (no check for the LSB, no WARN). Slay for speed ✨👑

🚨 But when netmem points to IOV, it provokes undefined behaviour. Not a cute vibe. Not iconic. Do not do this unless you know exactly what you’re doing, bestie 😭💅

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👑 RETURN 👑

pointer to the page (garbage if netmem is not page-backed) 🙈✨

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🌈 SEE ALSO 🌈

• Kernel file ./include/net/netmem.h — plus these little icons: netmem_ref(9), virt_to_netmem(9), __netmem_to_nmdesc(9), __netmem_get_pp(9), __netmem_address(9), netmem_is_pfmemalloc(9) 🧚💜

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mwah 💋 this whole thing comes from the ./include/net source tree, October 2026 edition, and it’s still out here repping __netmem_to_page(9) in the Kernel API Manual 🎀✨🫶