vmpressure_unregister_event(9)

💅 vmpressure_unregister_event(9)

okay so this is from the Kernel API Manual, and the function is literally called vmpressure_unregister_event — say that five times fast, iykyk. It's giving "cleanup era" and honestly? We love a good teardown. 🧹✨

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🎀 NAME 🎀

vmpressure_unregister_event — unbind that eventfd from vmpressure, bestie. That's it, that's the job. 💖

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✨ SYNOPSIS ✨

void vmpressure_unregister_event (struct mem_cgroup *memcg , struct
       eventfd_ctx *eventfd );

no cap, that's the whole signature — void, so it's not handing anything back to you. 🫶

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🌸 ARGUMENTS 🌸

• memcg — the memcg handle. like, the actual memory cgroup we're dealing with. 🫡
• eventfd — the eventfd context that was used to link vmpressure with the cg. the one that's about to get un-linked, fr fr.

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🦋 DESCRIPTION 🦋

okay so here's the vibe: this function does internal manipulations to detach the eventfd from the vmpressure notifications. then it frees the internal resources associated with the eventfd.

⚠️ important detail, don't miss it: the eventfd itself is not freed. only the internal resources attached to it. the eventfd lives on, main character energy, untouched. 💀

and the intended use? it's meant to be used as a memcg event method. that's the whole point. 👑

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🔥 SEE ALSO 🔥

• Kernel file ./mm/memcontrol-v1.c
• __memcg1_swapout(9)
• memcg1_swapin(9)
• mem_cgroup_oom_synchronize(9)
• vmpressure_prio(9)
• vmpressure_register_event(9) — the registering one, the prequel, the origin story 🌈

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⭐ k that's the whole page!! sign-off time: this lil beauty lives in ./mm, it's from October 2026, and yeah — vmpressure_unregister_event(9), periodt. go forth and detach responsibly 💜🎀