What is atomicity in operating system?

Atomicity in an operating system refers to the property of operations that ensures they are completed entirely or not at all, maintaining system integrity. This is crucial in multitasking environments where multiple processes may access shared resources concurrently. By guaranteeing atomic operations, the OS prevents issues such as race conditions and data corruption, ensuring that critical sections of code are executed without interruption. In essence, atomicity provides a reliable way to manage resource access and maintain consistency in concurrent systems.