On Wed, 10 Dec 2014, Pekka Enberg wrote: > > +static bool same_slab_page(struct kmem_cache *s, struct page *page, void *p) > > Why are you passing a pointer to struct kmem_cache here? You don't > seem to use it. True. > > +{ > > + long d = p - page->address; > > + > > + return d > 0 && d < (1 << MAX_ORDER) && d < (compound_order(page) << PAGE_SHIFT); > > +} > > Can you elaborate on what this is doing? I don't really understand it. Checks if the pointer points to the slab page. Also it tres to avoid having to call compound_order needlessly. Not sure if that optimization is worth it. -- 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>