nd_pmem_max_contiguous_dpa(9)

✨ NAME ✨

okay so bestie, welcome to the Kernel API Manual page for nd_pmem_max_contiguous_dpa(9) — and the function nd_pmem_max_contiguous_dpa is literally here to, for the given dimm+region, return the max contiguous unallocated dpa range. that's the whole assignment, no cap 💅💖

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🌸 SYNOPSIS 🌸

the signature is giving exactly this, periodt:

resource_size_t nd_pmem_max_contiguous_dpa (struct nd_region *nd_region
, struct nd_mapping *nd_mapping );

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🎀 ARGUMENTS 🎀

• nd_region — constrain available space check to this reference region. it's the reference-region bestie for the available-space check 🫶
• nd_mapping — container of dpa-resource-root + labels. the little container situation, iykyk ✨

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🔥 RETURN 🔥

• 0 if there is an alignment error
• otherwise, the max unallocated dpa range

so yeah: alignment error? 0. otherwise? max unallocated dpa range. slay 💀✨

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💜 SEE ALSO 💜

go read these too, bestie:

• Kernel file ./drivers/nvdimm/dimm_devs.c
• nvdimm_init_nsarea(9)
• nd_pmem_available_dpa(9)
• nvdimm_allocated_dpa(9)

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sign-off szn: this page is from ./drivers/nvdimm, dated October 2026, and it's the nd_pmem_max_contiguous_dpa(9) manual page. mwah 🫶✨