Re: [PATCH v8] net: ethernet: add driver for Aurora VLSI NB8800 Ethernet controller

[Mason <slash.tmp@free.fr>]

[ Using different address for Alexander ]

On 25/11/2015 13:36, Mason wrote:

> On 19/11/2015 14:02, Mans Rullgard wrote:
> 
>> +	if (dma_mapping_error(&dev->dev, dma_addr)) {
>> +		skb_free_frag(data);
>> +		return -ENOMEM;
>> +	}
> 
> I'm back-porting this driver to 4.1
> 
> skb_free_frag() was introduced in 4.2 by 181edb2bfa22b IIUC.
> 
> +static inline void skb_free_frag(void *addr)
> +{
> +       __free_page_frag(addr);
> +}
> 
> Should I just copy the definition of __free_page_frag() ?
> 
> /*
>  * Frees a page fragment allocated out of either a compound or order 0 page.
>  */
> void __free_page_frag(void *addr)
> {
> 	struct page *page = virt_to_head_page(addr);
> 
> 	if (unlikely(put_page_testzero(page)))
> 		__free_pages_ok(page, compound_order(page));
> }