In a system using the Banker’s algorithm for deadlock avoidance, which…

CONCEPT

The Banker’s algorithm grants a request only when the resulting allocation is safe. A state is safe if at least one safe sequence exists: each process can obtain its remaining need, finish, and release its resources for later processes.

Having fewer immediately available resources than the sum of all maximum claims is not by itself unsafe, because completed processes release resources.

APPLICATION

1. Consider the state that would result after granting the request.

2. Find a process whose remaining need is no greater than the available-resource vector; let it finish and return its allocation.

3. Repeat this test. If no sequence lets every process finish, the resulting state is unsafe.

The scenario in which granting a request leaves no safe completion sequence therefore places the system in an unsafe state.

CONTRAST

• Enough resources to meet all maximum claims simultaneously is a stronger resource condition than the safety test requires.

• Merely holding less than the declared maximum does not determine safety without the Available, Allocation, and Need values.

• Supply above the combined maximum claims permits every maximum claim to be covered.

CROSS-CHECK

The conclusion follows directly from the safety algorithm: failure to construct any complete safe sequence is exactly the unsafe-state condition. An unsafe state is not necessarily already deadlocked, but it has no guaranteed order of completion and may lead to deadlock.