On Wed, Mar 24, 2010 at 06:56:31PM +1100, Benjamin Herrenschmidt wrote: > Some powerpc code needs to ensure that all previous iounmap/vunmap has > really been flushed out of the MMU hash table. Without that, various > hotplug operations may fail when trying to return those pieces to > the hypervisor due to existing active mappings. > > This exports purge_vmap_area_lazy() to allow the powerpc code to perform > that purge when unplugging devices. You want vm_unmap_aliases(), which also flushes entries in the per-cpu vmap allocator (and is already exported for other code that has similar problems). Thanks, Nick -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>