I am reading the "understanding linux kernel"(2nd edition) book. It says the penitum provides a feature to optionally disable caching or selecting a write-through/write-back policy. It also mentions that linux always enables caching and uses write-back policy.
I was wondering when would we disable caching and use write through policy as their alternatives are always efficient. Will this feature be useful in multi-processor systems due to the cache incoherency problems?( Even then I suppose they have hardware-circuitry to efficiently address those issues right?) .
rgds
Arun
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"There are 10 people in the world - those who understand binary and those who dont !"
