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When writing to a drive, existing cached entries must be written through
so DCD reads don't give stale data.
Signed-off-by: Ian Moffett <ian@osmora.org>
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Was supposed to happen on Jan 1, sorry! Happy late new year!
Signed-off-by: Ian Moffett <ian@osmora.org>
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Added the Drive Cache Descriptor Ring (DCDR) framework to manage the
caching of logical blocks for LBA-based storage mediums. This commit
implements core components including data structures for Drive Cache
Descriptors (DCDs) and Drive Cache Descriptor Rings (DCDRs). Other
implemented features include:
- DCD eviction policy based on least hit count
- DCD invalidation
- DCD lookups
- Support for logical block coalescing
Signed-off-by: Ian Moffett <ian@osmora.org>
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