Re: [PATCH net-next 03/24] net: Use __napi_alloc_frag_align() instead of open coding it.

From: Sebastian Andrzej Siewior
Date: Fri Jan 12 2024 - 04:01:53 EST


On 2023-12-18 08:48:56 [+0100], Paolo Abeni wrote:
> > diff --git a/net/core/skbuff.c b/net/core/skbuff.c
> > index b157efea5dea8..de9397e45718a 100644
> > --- a/net/core/skbuff.c
> > +++ b/net/core/skbuff.c
> > @@ -311,11 +311,8 @@ void *__netdev_alloc_frag_align(unsigned int fragsz, unsigned int align_mask)
> >
> > data = page_frag_alloc_align(nc, fragsz, GFP_ATOMIC, align_mask);
> > } else {
> > - struct napi_alloc_cache *nc;
> > -
> > local_bh_disable();
> > - nc = this_cpu_ptr(&napi_alloc_cache);
> > - data = page_frag_alloc_align(&nc->page, fragsz, GFP_ATOMIC, align_mask);
>
> There is a:
>
> fragsz = SKB_DATA_ALIGN(fragsz);
>
> statement just before the enclosing 'if'. I would consider moving such
> assignment inside the 'then' branch - since __napi_alloc_frag_align()
> already include that.

Okay, moved.

> /P
Sebastian