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Unbinding Parallel Jobs in Padata

padata is a generic framework for parallel jobs in the kernel — with a twist. It not only schedules jobs on multiple CPUs but also ensures that each job is properly serialized, i.e. finishes in the order it was submitted. This post will provide some background on this somewhat obscure feature of the core kernel and cover recent efforts to enhance its parallel performance in preparation for more multithreading in the kernel.