On Tue, May 08, 2012 at 08:00:29PM +0300, Emmanuel Grumbach wrote: > > > > This patch make no sense. Nothing stops compiler or CPU to write > > ->page into memory before ->page_dma . > > > > I thought that too,but the call to dma_map... is a call to functon. > Shouldn't force the compiler the make things in order. Or maybe the > assignment to rxb->page_dma can be reordered... I am not really sure.
Calling a non lock/unlock function does not make any guarantees about ordering. Stanislaw -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
