[PATCH 11/12 v2 RFC] skbuff: Call skb_zcopy_clear() before unref'ing fragments

[Jonathan Lemon]

From: Jonathan Lemon <b...@fb.com>

RX zerocopy fragment pages which are not allocated from the
system page pool require special handling.  Give the callback
in skb_zcopy_clear() a chance to process them first.

Signed-off-by: Jonathan Lemon <jonathan.le...@gmail.com>
---
 net/core/skbuff.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 463078ba663f..ee75279c7c78 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -605,13 +605,14 @@ static void skb_release_data(struct sk_buff *skb)
                              &shinfo->dataref))
                return;
 
+       skb_zcopy_clear(skb, true);
+
        for (i = 0; i < shinfo->nr_frags; i++)
                __skb_frag_unref(&shinfo->frags[i]);
 
        if (shinfo->frag_list)
                kfree_skb_list(shinfo->frag_list);
 
-       skb_zcopy_clear(skb, true);
        skb_free_head(skb);
 }
 
-- 
2.24.1