mod_memcg_state(9)

📦 version 7.3.1, in nixpkgs unstable

💅 mod_memcg_state — like, the cgroup memory stats updater (from the Kernel API Manual, bestie)

okay so picture this: it's a void function and it's literally just here to keep cgroup memory statistics updated. No return value, no drama, just vibes and counter math. ✨

🌸 SYNOPSIS 🌸

void mod_memcg_state (struct mem_cgroup *memcg , enum memcg_stat_item
idx , int val );

Like I said — void, so don't go looking for a return value, she gives you nothing back and that's iconic of her. 💅

🎀 ARGUMENTS 🎀

  • memcg — the memory cgroup in question, aka the whole reason we're here 🫶
  • idx — the stat item you're poking at; it can be an enum memcg_stat_item or an enum node_stat_item, so yes, either one, she's flexible like that
  • val — the delta you're adding to the counter, and bestie, it can be negative, so this is not always a glow-up — sometimes we're subtracting 😭

🦋 SEE ALSO 🦋

The kernel file to go peek at is ./mm/memcontrol.c, and then there's this whole friend group of related calls — go say hi:

and that's the whole page, no cap 💖 this lil' manpage lives in ./mm, it's dated October 2026, and it's filed under mod_memcg_state(9) — mwah, go update those stats bestie, ily 🧚‍♀️✨🎀

📦 where this page comes from