Stephen Hemminger <sthemmin@xxxxxxxxxxxxx> writes: > I would worry that kmem_cache_alloc does not currently have same alignment constraints. > See discussion here: > https://lwn.net/SubscriberLink/787740/a886fe4ea6681322/ I think it even was me who reported this bug with XFS originally :-) Yes, plain kmalloc() doesn't give you alignment guarantees (it is very easy to prove, e.g. with CONFIG_KASAN), however, kmem_cache_create() (and dma_pool_create() to that matter) has explicit 'align' parameter and it is a bug if it is not respected. -- Vitaly
