Deepin Linux

Apr 28, 2026 · Fundamentals

How Linux Kernel’s Seqlock Eliminates Lock Contention for High‑Performance Concurrency

The article explains the Linux kernel Seqlock mechanism—a lightweight lock‑free synchronization primitive that uses a sequence number and a spinlock to allow concurrent reads and writes, compares it with spinlocks and rwlocks, and shows real kernel and user‑space examples.