memory_bloc...sed_max_size(9)

💅 memory_bloc...sed_max_size(9) — like, the Kernel API Manual era 🎀

okay so bestie, welcome to section 9 of the Kernel API Manual, where the kernel devs hang out and write docs about hotplug memory blocks ✨ grab a lil snack, this one's short and sweet 🍓

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🌸 NAME 🌸

memory_block_advised_max_size — query advised max hotplug block size. that's it, that's the whole vibe 💅

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✨ SYNOPSIS ✨

unsigned long memory_block_advised_max_size (void );

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🦋 ARGUMENTS 🦋

• void — no arguments, not a single one, zero, nada 🙈 she takes nothing and she gives you a number, iconic behavior honestly

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💜 DESCRIPTION 💜

okay so here's the tea ☕ the very first time you call this thing, that's it — after the first call, the value can never change. periodt. no take-backs, no glow-ups, it's locked in forever 🔒

so if you're a caller and what you actually want is the actual block size — not the advised one — you should be using memory_block_size_bytes instead, mmkay? don't get it twisted 😭

this interface is intended for use by arch-init when initializing the hotplug block size. that's her whole job, that's her main character energy 👑

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🌈 RETURN 🌈

• advised size in bytes 🎀
• or literally 0 if it was never set 💀 (yes, zero is the "never been set" flag, ngl that's lowkey a mood)

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🔥 SEE ALSO 🔥

• Kernel file ./drivers/base/memory.c
• memory_block_advise_max_size(9)
• memory_block_add_nid_early(9)
• walk_memory_blocks(9)
• for_each_memory_block(9)
• memory_group_register_static(9)
• memory_group_register_dynamic(9)
• memory_group_unregister(9)

like, go read the whole friend group, they're all obsessed with each other fr fr 🫶

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and that's the page babes 🌸 sourced straight from ./drivers/base, stamped October 2026 — the Kernel API Manual said see you next semester, mwah 💖🧚‍♀️⭐