1 files changed, 7 insertions, 3 deletions

diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 09cc38651b2f..52ba2b5e803d 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -1699,14 +1699,18 @@ static bool __skb_splice_bits(struct sk_buff *skb, struct pipe_inode_info *pipe,
                               struct splice_pipe_desc *spd, struct sock *sk)
 {
         int seg;
+        bool head_is_linear = !skb->head_frag;
 
-        /*
-         * map the linear part
+        /* map the linear part :
+         * If skb->head_frag is set, this 'linear' part is backed
+         * by a fragment, and we can avoid a copy.
          */
         if (__splice_segment(virt_to_page(skb->data),
                              (unsigned long) skb->data & (PAGE_SIZE - 1),
                              skb_headlen(skb),
-                             offset, len, skb, spd, true, sk, pipe))
+                             offset, len, skb, spd,
+                             head_is_linear,
+                             sk, pipe))
                 return true;
 
         /*