> I found that you said retrieving tid first is sufficient to do > things right in old discussion. :) Right but the tid can be obtained from a different processor. One other aspect of this patchset is that it reduces the cache footprint of the alloc and free functions. This typically results in a performance increase for the allocator. If we can avoid the page_address() and virt_to_head_page() stuff that is required because we drop the ->page field in a sufficient number of places then this may be a benefit that goes beyond the RT and CONFIG_PREEMPT case. -- 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>