Cache management method and apparatus for non-volatile storage device
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United States of America Patent
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Aug 8, 2017
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N/A
app pub date -
Nov 10, 2016
filing date -
Jun 20, 2012
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Abstract
Embodiments of the present invention disclose a method and apparatus of cache management for a non-volatile storage device. The method embodiment includes: determining a size relationship between a capacity sum of a clean page subpool and a dirty page subpool and a cache capacity; determining, when the capacity sum is equal to the cache capacity, whether identification information of a to-be-accessed page is in a history list of clean pages or a history list of dirty pages; and when it is determined that the identification information of the to-be-accessed page is in the history list of clean pages, adding a first adjustment value to a clean page subpool capacity threshold; and when the identification information of the to-be-accessed page is in the history list of dirty pages, subtracting a second adjustment value from the clean page subpool capacity threshold.
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