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/A Policy Question: Which Blocks to Clean, and When?
A Policy Question: Which Blocks to Clean, and When?
Let's see how LFS decides to clean blocks from the disk.
We'll cover the following...
On top of the mechanism described in the previous lesson, LFS must include a set of policies to determine both when to clean and which blocks are worth cleaning. Determining when to clean is easier; either periodically, during idle time, or when you have to because the disk is full.
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Determining which blocks to clean is more challenging, and has ...