Merge branch 'couple-of-minor-improvements-to-build_skb-variants'

Gal Pressman says:

====================
Couple of minor improvements to build_skb variants

First patch replaces open-coded occurrences of
skb_propagate_pfmemalloc() in build_skb() and build_skb_around().
The secnod patch adds a likely() to the skb allocation in build_skb().
====================

Link: https://lore.kernel.org/r/20230308131720.2103611-1-gal@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Author: kuba-moo

net/core/skbuff.c

@@ -420,10 +420,9 @@ struct sk_buff *build_skb(void *data, unsigned int frag_size)
 {
 	struct sk_buff *skb = __build_skb(data, frag_size);
 
-	if (skb && frag_size) {
+	if (likely(skb && frag_size)) {
 		skb->head_frag = 1;
-		if (page_is_pfmemalloc(virt_to_head_page(data)))
-			skb->pfmemalloc = 1;
+		skb_propagate_pfmemalloc(virt_to_head_page(data), skb);
 	}
 	return skb;
 }
@@ -445,8 +444,7 @@ struct sk_buff *build_skb_around(struct sk_buff *skb,
 
 	if (frag_size) {
 		skb->head_frag = 1;
-		if (page_is_pfmemalloc(virt_to_head_page(data)))
-			skb->pfmemalloc = 1;
+		skb_propagate_pfmemalloc(virt_to_head_page(data), skb);
 	}
 	return skb;
 }