On Wed, Jan 13, 2016 at 11:47:12AM +0800, Chenjie (K) wrote: > The DAX means Direct Access for files，if the pages have cache, > the file is not direct access. But in normal condition, > we can not find the problem directly. The file absolutely is direct accessed. The CPU cache is critical to performance, and should not be bypassed lightly. We have instructions to flush the cache, and a library (see http://pmem.io/) so that applications don't have to use them directly. -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html