mem_cgroup_lruvec(9)

💖 mem_cgroup_lruvec(9) 💖

okay bestie, welcome to the Kernel API Manual corner where we meet mem_cgroup_lruvec — the function whose whole job is to get the lru list vector for a memcg & node. it's giving “which lruvec holds these pages?” energy, and honestly? iconic. ✨

🌸 NAME 🌸

mem_cgroup_lruvec — get the lru list vector for a memcg & node. 🫶

✨ SYNOPSIS ✨

struct lruvec * mem_cgroup_lruvec (struct mem_cgroup *memcg , struct pglist_data *pgdat );

🎀 ARGUMENTS 🎀

• memcg — the memcg of the wanted lruvec. that’s the memory cgroup in question, bestie.
• pgdat — the pglist_data. yes, that is literally the whole description; we keep it exactly like that. 💅

🦋 DESCRIPTION 🦋

Returns the lru list vector holding pages for a given memcg & pgdat combination. that’s the whole plot. 🎯

This can be the node lruvec, if the memory controller is disabled. no cap — when the memory controller is off, the node lruvec can be the answer. 🦋

👑 SEE ALSO 👑

The Kernel file ./include/linux/memcontrol.h is right there in the mix, plus these besties:

• mem_cgroup_shrink_is_root(9) — see also reference, slay.
• mem_cgroup_charge(9) — see also reference, periodt.
• mem_cgroup_uncharge(9) — see also reference, love that for us.
• folio_lruvec(9) — see also reference, no notes.
• parent_mem_cgroup(9) — see also reference, ate.

xoxo 💅 — source/version: ./include/linux; date: October 2026. that’s the footer energy, bestie — 💖