drivers/md/dm-pcache/Kconfig

Source file repositories/reference/linux-study-clean/drivers/md/dm-pcache/Kconfig

File Facts

System: Linux kernel
Corpus path: drivers/md/dm-pcache/Kconfig
Extension: [no extension]
Size: 656 bytes
Lines: 18
Domain: Driver Families
Bucket: drivers/md
Inferred role: Driver Families: build/configuration rule
Status: atlas-only

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

No C-style include directives detected by the generator.

Detected Declarations

No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

config DM_PCACHE
	tristate "Persistent cache for Block Device (Experimental)"
	depends on BLK_DEV_DM
	depends on DEV_DAX
	help
	  PCACHE provides a mechanism to use persistent memory (e.g., CXL persistent memory,
	  DAX-enabled devices) as a high-performance cache layer in front of
	  traditional block devices such as SSDs or HDDs.

	  PCACHE is implemented as a kernel module that integrates with the block
	  layer and supports direct access (DAX) to persistent memory for low-latency,
	  byte-addressable caching.

	  Note: This feature is experimental and should be tested thoroughly
	  before use in production environments.

	  If unsure, say 'N'.

Annotation

Atlas domain: Driver Families / drivers/md.
Implementation status: atlas-only.

Implementation Notes

This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.