mem_cgroup_from_private_id(9)

📦 version 7.3.1, in nixpkgs unstable

💅 mem_cgroup_from_private_id(9)

okay so this is a page from the Kernel API Manual — yes bestie, the Kernel API Manual, we're in the big leagues now 💖 — and it's all about mem_cgroup_from_private_id, which is literally the "look up a memcg from a memcg id" girlie. that's the whole vibe. she fetches, she doesn't do much else. iconic minimalism honestly 🎀

✨ NAME ✨

mem_cgroup_from_private_id — look up a memcg from a memcg id 🦋

🌸 SYNOPSIS 🌸

struct mem_cgroup * mem_cgroup_from_private_id (unsigned short id );

like, she takes one tiny unsigned short and hands you back a struct mem_cgroup *. no cap. 💫

🎀 ARGUMENTS 🎀

  • id — the memcg id to look up. that's it. that's the whole input. she's low-maintenance like that 🫶

🔥 DESCRIPTION 🔥

Caller must hold rcu_read_lock.

that's the ENTIRE description and honestly? she said what she said 💀 the one thing you cannot skip: you, the caller, must be holding rcu_read_lock before you call this. no lock, no lookup. not me being dramatic, that's just the rule fr fr ⭐

👑 SEE ALSO 👑

heads up, this list is LONG — the kernel file ./mm/memcontrol.c is out here with a whole friend group, and every single one of them is linked below. go off, memcontrol.c 🌈

and that's the page!! mwah 💋 this came out of source ./mm, dated October 2026, and it's still serving mem_cgroup_from_private_id(9) realness to this very day. slay, stay locked, and don't forget your rcu_read_lock bestie 💜🧚‍♀️

📦 where this page comes from