CFLGS_OFF_SLAB is not a valid flag to be passed to cache creation. If we are duplicating a cache - support added in a future patch - we will rely on the flags it has stored in itself. That may include CFLGS_OFF_SLAB. So it is better to clean this flag at cache creation. CC: Christoph Lameter <cl@xxxxxxxxx> CC: Pekka Enberg <penberg@xxxxxxxxxxxxxx> CC: David Rientjes <rientjes@xxxxxxxxxx> --- mm/slab.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/mm/slab.c b/mm/slab.c index 2d5fe28..c30a61c 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -2201,6 +2201,12 @@ int __kmem_cache_create(struct kmem_cache *cachep) BUG_ON(flags & SLAB_POISON); #endif /* + * Passing this flag at creation time is invalid, but if we're + * duplicating a slab, it may happen. + */ + flags &= ~CFLGS_OFF_SLAB; + + /* * Always checks flags, a caller might be expecting debug support which * isn't available. */ -- 1.7.10.2 -- 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>