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net: do not take an additional reference in skb_frag_set_page

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I audited all of the callers in the tree and only one of them (pktgen) expects
it to do so. Taking this reference is pretty obviously confusing and error
prone.

In particular I looked at the following commits which switched callers of
(__)skb_frag_set_page to the skb paged fragment api:

6a930b9f16 cxgb3: convert to SKB paged frag API.
5dc3e196ea myri10ge: convert to SKB paged frag API.
0e0634d20d vmxnet3: convert to SKB paged frag API.
86ee8130a4 virtionet: convert to SKB paged frag API.
4a22c4c919 sfc: convert to SKB paged frag API.
18324d690d cassini: convert to SKB paged frag API.
b061b39e3a benet: convert to SKB paged frag API.
b7b6a688d2 bnx2: convert to SKB paged frag API.
804cf14ea5 net: xfrm: convert to SKB frag APIs
ea2ab69379 net: convert core to skb paged frag APIs

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ian Campbell 2011-10-18 22:55:11 +00:00 committed by David S. Miller
parent e049f28883
commit a0bec1cd8f
2 changed files with 1 additions and 1 deletions
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1
include/linux/skbuff.h
View File

@ -1786,7 +1786,6 @@ static inline void *skb_frag_address_safe(const skb_frag_t *frag)
static inline void __skb_frag_set_page(skb_frag_t *frag, struct page *page)
{
frag->page = page;
__skb_frag_ref(frag);
}
/**

1
net/core/pktgen.c
View File

@ -2602,6 +2602,7 @@ static void pktgen_finalize_skb(struct pktgen_dev *pkt_dev, struct sk_buff *skb,
if (!pkt_dev->page)
break;
}
get_page(pkt_dev->page);
skb_frag_set_page(skb, i, pkt_dev->page);
skb_shinfo(skb)->frags[i].page_offset = 0;
/*last fragment, fill rest of data*/