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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'.
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