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 <lize...@huawei.com> -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
