dmem_cgroup...ister_region(9)

💅 dmem_cgroup_unregister_region(9) 💅

okay so bestie, welcome to the Kernel API Manual ✨ — this little page is all about dmem_cgroup_unregister_region, and honestly? it's a cleanup queen. she undoes the thing so you can safely free the stuff. main character energy, no cap 🎀

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🌸 NAME 🌸

dmem_cgroup_unregister_region — unregister a region that you already registered before. that's it, that's the vibe 💖

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✨ SYNOPSIS ✨

void dmem_cgroup_unregister_region (struct dmem_cgroup_region *region );

yeah she takes exactly one argument, no drama 🫶

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🦋 ARGUMENTS 🦋

• region — the region you want to unregister. the one you're breaking up with. it's giving "we're done here" 💀

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👑 DESCRIPTION 👑

so here's the tea, bestie: this function is literally the undo button for dmem_cgroup_register_region 🔥

the actually important part? she drains any in-flight reclaim callbacks before returning. like, she waits for every callback that's still mid-flight to finish before she walks out the door 💅

that means — and this is the part you screenshot — the caller may safely free the resources pointed to by the reclaim_priv that was passed at registration time. so after she returns, you're cleared to free that stuff 🫶 slay.

ngl, the "drains in-flight callbacks" bit is the whole point. don't be out here freeing reclaim_priv resources before this function comes back, okay? that's the whole safety guarantee and she did not do all that waiting for nothing 😭

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🌈 SEE ALSO 🌈

kernel file ./kernel/cgroup/dmem.c

• dmem_cgroup_state_evict_valuable(9)
• dmem_cgroup_register_region(9)
• dmem_cgroup_pool_state_put(9)
• dmem_cgroup_uncharge(9)
• dmem_cgroup_try_charge(9)
• dmem_cgroup_below_min(9)
• dmem_cgroup_below_low(9)
• dmem_cgroup_get_common_ancestor(9)

the whole cgroup crew, all linked, all iconic 👑

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and that's the page, bestie!! 🍓 sourced from ./kernel/cgroup, dated October 2026 — go forth and unregister responsibly, mwah 💜🧚