container_of_const(9)

💅 container_of_const(9) 💅

okay so bestie, welcome to the Kernel API Manual — this is the page for container_of_const, and honestly? it's giving main character energy in the macro world. ✨

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🌸 NAME 🌸

container_of_const — cast a member of a structure out to the containing structure and preserve the const-ness of the pointer 🫶

like, it does the glow-up in reverse: you hand it a pointer to a member, and it hands you back the whole struct that member is embedded in — and it keeps the const-ness of your pointer intact. no cap. 👑

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🎀 SYNOPSIS 🎀

container_of_const (ptr , type , member );

that's it, that's the whole vibe. three little args and you're slaying. 💅

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✨ ARGUMENTS ✨

• ptr — the pointer to the member. this is your starting point, your little entryway into the struct. 🚪
• type — the type of the container struct this is embedded in. yes, the whole struct, the big one, the one that's really doing the most. 🏠
• member — the name of the member within the struct. the specific little field you're pointing at. 🎯

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💖 DESCRIPTION 💖

Always prefer container_of_const instead of container_of in new code.

fr fr. if you're writing new code, this is the one you reach for. container_of is lowkey old news for fresh code — container_of_const is the icon, the moment, the one that actually respects your const. 🔥

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🦋 SEE ALSO 🦋

• Kernel file ./include/linux/container_of.h — go read it, it's literally right there and it ate 💀
• container_of(9) — the classic, the OG, the one you're not preferring in new code 😭

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ngl bestie, if you take one thing from this page: new code → container_of_const. every time. periodt. 🌈

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and that's the whole page!! 🧚 brought to you with love from the ./include/linux era, dated October 2026 — mwah, go write some const-correct macros, you absolute queen 💜🍓