nvdimm_allocated_dpa(9)

nvdimm_allocated_dpa(9) 🌸 — straight outta the Kernel API Manual

okay so bestie, this is a tiny little kernel helper with main character energy: it adds up the dpa that’s already been allocated to a specific label_id. That’s the whole vibe. 💅

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💖 NAME 💖

nvdimm_allocated_dpa — sum up the dpa currently allocated to this label_id

Like, literally: you give it a label_id, and it sums up the dpa currently allocated to that label_id. No cap. ✨

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✨ SYNOPSIS ✨

resource_size_t nvdimm_allocated_dpa (struct nvdimm_drvdata *ndd ,
       struct nd_label_id *label_id );

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🧚 ARGUMENTS 🧚

• ndd — container of dpa-resource-root + labels. Think of it as the little container holding the dpa-resource-root and the labels together. 🫶
• label_id — dpa resource name of the form pmem-<human readable uuid>. So it’s the dpa resource name shaped like pmem-<human readable uuid>, iykyk. 🦋

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🎁 RETURN 🎁

It returns the sum of the dpa allocated to the label_id — that’s the resource_size_t coming back at you. Slay. 💜

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👀 SEE ALSO 👀

• Kernel file: ./drivers/nvdimm/dimm_devs.c
• Also go peek at: nvdimm_init_nsarea(9), nd_pmem_max_contiguous_dpa(9), nd_pmem_available_dpa(9)

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xoxo, your local Unix bestie 💅 — this page lives under ./drivers/nvdimm and it’s dated October 2026. Bye bestie, go read the kernel source fr fr 🎀