On Mon, May 10, 2010 at 11:16:47AM +0100, Catalin Marinas wrote: > In most situations, just doing flushing in set_pte_at() would suffice > and flush_dcache_page() can be ignored. There are two situations where I > still see flush_dcache_page() useful: > > 1. SMP systems where the cache maintenance operations aren't > automatically broadcast in hardware > 2. The kernel modifies a page cache page that is already mapped in > user space > > (1) can be worked around on some architectures (though not sure about > all of them). > > Is (2) a valid scenario? > get_user_pages() ? -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
