On Fri, 18 Jun 2010, Tejun Heo wrote: > It would be a good idea to add BUILD_BUG_ON() in slab to verify > allocation limits against PERCPU_DYNAMIC_EARLY_SIZE/SLOTS. Please > note that two alloc slots might be necessary for each allocation and > there can be gaps in allocation due to alignment, so giving it some > headroom would be better. > > Please let me know if it's okay for slab. I'll push it through > percpu#for-next then. We need SLUB_PAGE_SHIFT * sizeof(kmem_cache_cpu). So it would be BUILD_BUG_ON(PERCPU_DYNAMIC_EARLY_SIZE < SLUB_PAGE_SHIFT * sizeof(struct kmem_cache_cpu))? What is the role of SLOTS? Each kmem_cache_cpu structure is a separate percpu allocation. -- 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>