A device-mapper target that layers a persistent cache on top of block devices, letting administrators stack a fast cache device in front of a slower backing volume through the standard Linux storage mapping framework. It is software plumbing within the storage stack rather than a driver for any specific piece of hardware.
This is not actually a hardware driver directory; it is a device-mapper target inside the MD/storage subsystem that implements caching logic in software. As such it falls outside the scope of hardware-driver triage and should not be evaluated for removal on hardware-obsolescence grounds.
repository signals
18files
5,238source lines
13commits, 5y
+5,292 / −34lines added / removed, 5y
5authors, 5y
monthly commits · 2021-04-21 → 2026-04-21 · 13 total · active in 5/61 months
sources
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codex reasoning notes (technical)
Not a driver directory: contains device-mapper dm-pcache target code in the MD/storage stack, not hardware-bound device driver code.