wmb, smp_wmb, and store-release

Posted Mar 1, 2021 3:00 UTC (Mon) by PengZheng (subscriber, #108006)
In reply to: Uh-oh by pbonzini
Parent article: Lockless patterns: relaxed access and partial memory barriers

> This is not entirely correct, because barriers are bidirectional while store-release is unidirectional.

Thanks for correcting my misunderstanding. I read the following for a brief explanation of memory barriers:
http://bruceblinn.com/linuxinfo/MemoryBarriers.html