From: Alexander Duyck
Date: Sun, 10 May 2015 17:01:15 -0700
> The reason for the difference between the two is that in the case of
> netdev_alloc_skb/frag the netdev_alloc_cache can only be accessed with
> IRQs disabled, whereas in the napi_alloc_skb case we can access the
> napi_alloc_cache at a
From: Alexander Duyck
Date: Wed, 06 May 2015 21:11:40 -0700
> + /* use OR instead of assignment to avoid clearing of bits in mask */
> + if (pfmemalloc)
> + skb->pfmemalloc = 1;
> + skb->head_frag = 1;
...
> + /* use OR instead of assignment to avoid clearing of bits
