On Fri, Sep 27, 2013 at 07:34:55AM -0700, Joe Perches wrote: > That would make it seem as if all barriers are SMP no? I would think any memory barrier is ordering against someone else; if not smp then a device/hardware -- like for instance the hardware page table walker. Barriers are fundamentally about order; and order only makes sense if there's more than 1 party to the game. > Maybe just refer to Documentation/memory-barriers.txt > and/or say something like "please document appropriately" Documentation/memory-barriers.txt is always good; appropriately doesn't seem to quantify anything much at all. Someone might think: /* */ smp_mb(); appropriate... -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>