Revert "FROMLIST: net: skbuff: propagate shared-frag marker through frag-transfer helpers"

This reverts commit 2977587.

Revert the v4 patch to use next v5 patch.

Signed-off-by: Wentao Guan <guanwentao@uniontech.com>

Author: opsiff

net/core/gro.c

@@ -216,12 +216,10 @@ int skb_gro_receive(struct sk_buff *p, struct sk_buff *skb)
 	p->data_len += len;
 	p->truesize += delta_truesize;
 	p->len += len;
-	skb_shinfo(p)->flags |= skbinfo->flags & SKBFL_SHARED_FRAG;
 	if (lp != p) {
 		lp->data_len += len;
 		lp->truesize += delta_truesize;
 		lp->len += len;
-		skb_shinfo(lp)->flags |= skbinfo->flags & SKBFL_SHARED_FRAG;
 	}
 	NAPI_GRO_CB(skb)->same_flow = 1;
 	return 0;
@@ -249,8 +247,6 @@ int skb_gro_receive_list(struct sk_buff *p, struct sk_buff *skb)
 	p->truesize += skb->truesize;
 	p->len += skb->len;
 
-	skb_shinfo(p)->flags |= skb_shinfo(skb)->flags & SKBFL_SHARED_FRAG;
-
 	NAPI_GRO_CB(skb)->same_flow = 1;
 
 	return 0;

net/core/skbuff.c

@@ -2050,7 +2050,6 @@ struct sk_buff *__pskb_copy_fclone(struct sk_buff *skb, int headroom,
 			skb_frag_ref(skb, i);
 		}
 		skb_shinfo(n)->nr_frags = i;
-		skb_shinfo(n)->flags |= skb_shinfo(skb)->flags & SKBFL_SHARED_FRAG;
 	}
 
 	if (skb_has_frag_list(skb)) {
@@ -4087,8 +4086,6 @@ int skb_shift(struct sk_buff *tgt, struct sk_buff *skb, int shiftlen)
 	tgt->ip_summed = CHECKSUM_PARTIAL;
 	skb->ip_summed = CHECKSUM_PARTIAL;
 
-	skb_shinfo(tgt)->flags |= skb_shinfo(skb)->flags & SKBFL_SHARED_FRAG;
-
 	skb_len_add(skb, -shiftlen);
 	skb_len_add(tgt, shiftlen);
 

net/ipv4/tcp_output.c

@@ -2364,7 +2364,6 @@ static int tcp_clone_payload(struct sock *sk, struct sk_buff *to,
 			todo = min_t(int, skb_frag_size(fragfrom),
 				     probe_size - len);
 			len += todo;
-			skb_shinfo(to)->flags |= skb_shinfo(skb)->flags & SKBFL_SHARED_FRAG;
 			if (lastfrag &&
 			    skb_frag_page(fragfrom) == skb_frag_page(lastfrag) &&
 			    skb_frag_off(fragfrom) == skb_frag_off(lastfrag) +