On Wed, 20 Jul 2011, Mel Gorman wrote: > > The changelog isn't that convincing, really. This is > > kmem_cache_create() so I'm surprised we'd ever get NULL here in > > practice. Does this fix some problem you're seeing? If this is > > really an issue, I'd blame the page allocator as GFP_KERNEL should > > just work. > > > > Besides, is allocating from cache_cache really a > PAGE_ALLOC_COSTLY_ORDER allocation? On my laptop at least, it's an > order-2 allocation which is supporting up to 512 CPUs and 512 nodes. Slab's kmem_cache is configured with an array of NR_CPUS which is the maximum nr of cpus supported. Some distros support 4096 cpus in order to accomodate SGI machines. That array then will have the size of 4096 * 8 = 32k -- 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>