On 2014/9/26 22:50, Vladimir Davydov wrote: > Hi, > > SLAB and SLUB use hardwall cpuset check on fallback alloc, while the > page allocator uses softwall check for all kernel allocations. This may > result in falling into the page allocator even if there are free objects > on other nodes. SLAB algorithm is especially affected: the number of > objects allocated in vain is unlimited, so that they theoretically can > eat up a whole NUMA node. For more details see comments to patches 3, 4. > > When I last sent a fix (https://lkml.org/lkml/2014/8/10/100), David > found the whole cpuset API being cumbersome and proposed to simplify it > before getting to fixing its users. So this patch set addresses both > David's complain (patches 1, 2) and the SL[AU]B issues (patches 3, 4). > > Reviews are appreciated. > > Thanks, > > Vladimir Davydov (4): > cpuset: convert callback_mutex to a spinlock > cpuset: simplify cpuset_node_allowed API > slab: fix cpuset check in fallback_alloc > slub: fix cpuset check in get_any_partial > Acked-by: Zefan Li <lizefan@xxxxxxxxxx> -- 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>