net: skb: move skb_pp_recycle() to skbuff.c

skb_pp_recycle() is only used by skb_free_head() in
skbuff.c, so move it to skbuff.c.

Signed-off-by: Yunsheng Lin <[e-mail]>
Acked-by: Ilias Apalodimas <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

include/linux/skbuff.h

···
 }
 #endif
 
-static inline bool skb_pp_recycle(struct sk_buff *skb, void *data)
-{
-	if (!IS_ENABLED(CONFIG_PAGE_POOL) || !skb->pp_recycle)
-		return false;
-	return page_pool_return_skb_page(virt_to_page(data));
-}
-
 #endif	/* __KERNEL__ */
 #endif	/* _LINUX_SKBUFF_H */

net/core/skbuff.c

···
 		skb_get(list);
 }
 
+static bool skb_pp_recycle(struct sk_buff *skb, void *data)
+{
+	if (!IS_ENABLED(CONFIG_PAGE_POOL) || !skb->pp_recycle)
+		return false;
+	return page_pool_return_skb_page(virt_to_page(data));
+}
+
 static void skb_free_head(struct sk_buff *skb)
 {
 	unsigned char *head = skb->head;