The kernel mutex is implemented on top of the atomic API, though this is not visible to the kernel user.
内核互斥锁是在原子api之上实现的，但这对于内核用户是不可见的。
The simplest means of synchronization in the Linux kernel are the atomic operations.
Linux 中最简单的同步方法就是原子操作。
The simplest means of synchronization in the Linux kernel are the atomic operations.
Linux 中最简单的同步方法就是原子操作。
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