On Wed, 26 Sep 2018, Pingfan Liu wrote:
> -
> if (unlikely(!freelist)) {
> slab_out_of_memory(s, gfpflags, node);
> return NULL;
> }
>
> + VM_BUG_ON(!pfmemalloc_match(page, gfpflags));
> page = c->page;
> - if (likely(!kmem_cache_debug(s) && pfmemalloc_match(page, gfpflags)))
> + if (likely(!kmem_cache_debug(s))
> goto load_freelist;
>
> /* Only entered in the debug case */
> - if (kmem_cache_debug(s) &&
> - !alloc_debug_processing(s, page, freelist, addr))
> + if (!alloc_debug_processing(s, page, freelist, addr))
> goto new_slab; /* Slab failed checks. Next slab needed */
> -
> - deactivate_slab(s, page, get_freepointer(s, freelist), c);
In the debug case the slab needs to be deactivated. Otherwise the
slowpath will not be used and debug checks on the following objects will
not be done.
> - return freelist;
> + else
> + goto load_freelist;
> }
>
> /*
>
