necessary conditions for a deadlock , Operating System

Q) a. Given that the first three necessary conditions for a deadlock are in place, comment on the feasibility of the following strategy. All processes are given  unique priorities. When more than one process is waiting for a resource and  the resource becomes available, allocate the resource to the waiting process with the highest priority.

b. Would the support of user-level threads change your answer for part a? Explain.

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