The Forefront of the Development for NVDIMM on Linux Kernel
summary
Status update on NVDIMM support in Linux: adds a new src_map in iomap to implement copy‑on‑write for fsdax and a direct‑access compare path for dedupe so XFS reflink + fsdax actually works; implements 1-to-n reverse mapping and a holder registration layer so memory‑failure can locate all files sharing a PMEM page and kill or recover processes; introduces mount option dax=inode for per‑inode DAX flips; remaining work fixes unbind races and cleanup on forced disable.
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chapters (6)
- 0:00Start
- 4:12Confliction of requirements
- 7:17PMDK (2/2)
- 24:56What must be implemented? Extentiomap interface
- 36:17RMAP from PMEM to filesystem (3/3)
- 40:19Compatibility for no-reflink/no-rmapbt filesystem Fujitsu Need to keep the original 1 page-ta-1 file association
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