On Tue, 7 Oct 2014, Dave Hansen wrote: > Does this break slub's __cmpxchg_double_slab trick? I thought it > required page->freelist and page->counters to be doubleword-aligned. Sure that would be required for it to work. > It's not like we really require this optimization when we're debugging, > but trying to use it will unnecessarily slow things down. Debugging by inserting more data into the page struct will already cause a significant slow down because the cache footprint of key functions will increase significantly. I would think that using the fallback functions is reasonable in this scenario, -- 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>