cpuset_mem_spread_node(9)

💅 cpuset_mem_spread_node — Kernel API Manual, but make it chat

okay so bestie, we're in the Kernel API Manual today and the star of the show is cpuset_mem_spread_node 🎀 no cap, the name is a whole mouthful but the vibe is actually simple, i promise.

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✨ NAME ✨

cpuset_mem_spread_node — On which node to begin search for a file page 💖

like, literally that's the whole job. it tells you which node you start hunting for a file page on. that's it. that's the function. iconic behaviour honestly.

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🦋 SYNOPSIS 🦋

int cpuset_mem_spread_node (void );

yes babe, it returns an int and it takes void — she's low maintenance, she needs nothing from you, she simply is 🌸

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🌈 ARGUMENTS 🌈

• void — no arguments 🫶 not one. not a single one. zero. empty set. the function said "i don't need your input, i'm the main character" and honestly? respect.

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👑 SEE ALSO 👑

okay this is the part where the manpage shows off its entire friend group and ngl it's a big friend group. all of these live in the Kernel file ./kernel/cgroup/cpuset.c — and yes, cpuset_mem_spread_node herself is part of that same file, so it's giving very much family reunion energy 🔥

• cpuset_lock(9)
• cpuset_full_lock(9)
• partition_is_populated(9)
• alloc_cpumasks(9)
• alloc_tmpmasks(9)
• free_tmpmasks(9)
• dup_or_alloc_cpuset(9)
• free_cpuset(9)
• cpus_excl_conflict(9)
• cpuset_update_tasks_cpumask(9)
• compute_effective_cpumask(9)
• compute_effective_nodemask(9)
• rm_siblings_excl_cpus(9)
• update_parent_effective_cpumask(9)
• compute_partition_effective_cpumask(9)
• update_sibling_cpumasks(9)
• validate_partition(9)
• partition_cpus_change(9)
• update_cpumask(9)
• update_exclusive_cpumask(9)
• cpuset_update_tasks_nodemask(9)
• update_prstate(9)
• cpuset_css_alloc(9)
• cpuset_init(9)
• cpuset_hotplug_update_tasks(9)
• cpuset_handle_hotplug(9)
• cpuset_init_smp(9)
• cpuset_cpus_allowed_locked(9)
• cpuset_cpus_allowed(9)
• cpuset_cpus_allowed_fallback(9)
• cpuset_mems_allowed(9)
• cpuset_nodemask_valid_mems_allowed(9)
• cpuset_nodes_allowed(9)
• cpuset_spread_node(9)
• cpuset_mems_allowed_intersects(9)
• cpuset_print_current_mems_allowed(9)

that's the whole squad, go say hi to all of them 💅

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bestie heads up: this page gives you the what (which node to begin the search on) and literally nothing else — no extra tips, no secret lore. if you need the deep cpuset drama, that's what the SEE ALSO list is for 🧚

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okay that's a wrap! this page came straight out of the ./kernel/cgroup source, dated October 2026, and it's filed under the cpuset_mem_spread_node(9) name — mwah, slay, periodt, go read your man pages 💜✨