net: Remove useless function skb_header_release

There is no one which would invokes the function skb_header_release.
So just remove it now.

Signed-off-by: Gao Feng <gfree.wind@vip.163.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/usb/asix_common.c b/drivers/net/usb/asix_common.c
index 522d290..f4d7362 100644 (file)
--- a/drivers/net/usb/asix_common.c
+++ b/drivers/net/usb/asix_common.c
@@ -245,7 +245,7 @@ struct sk_buff *asix_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
         * - We are allowed to put 4 bytes at tail if skb_cloned()
         *   is false (and if we have 4 bytes of tailroom)
         *
-        * TCP packets for example are cloned, but skb_header_release()
+        * TCP packets for example are cloned, but __skb_header_release()
         * was called in tcp stack, allowing us to use headroom for our needs.
         */
        if (!skb_header_cloned(skb) &&

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 4928288..f9db553 100644 (file)
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -1456,28 +1456,9 @@ static inline int skb_header_unclone(struct sk_buff *skb, gfp_t pri)
        return 0;
 }
 
-/**
- *     skb_header_release - release reference to header
- *     @skb: buffer to operate on
- *
- *     Drop a reference to the header part of the buffer.  This is done
- *     by acquiring a payload reference.  You must not read from the header
- *     part of skb->data after this.
- *     Note : Check if you can use __skb_header_release() instead.
- */
-static inline void skb_header_release(struct sk_buff *skb)
-{
-       BUG_ON(skb->nohdr);
-       skb->nohdr = 1;
-       atomic_add(1 << SKB_DATAREF_SHIFT, &skb_shinfo(skb)->dataref);
-}
-
 /**
  *     __skb_header_release - release reference to header
  *     @skb: buffer to operate on
- *
- *     Variant of skb_header_release() assuming skb is private to caller.
- *     We can avoid one atomic operation.
  */
 static inline void __skb_header_release(struct sk_buff *skb)
 {

diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c
index 10f7edf..c2c9867 100644 (file)
--- a/net/batman-adv/soft-interface.c
+++ b/net/batman-adv/soft-interface.c
@@ -69,7 +69,7 @@ int batadv_skb_head_push(struct sk_buff *skb, unsigned int len)
        int result;
 
        /* TODO: We must check if we can release all references to non-payload
-        * data using skb_header_release in our skbs to allow skb_cow_header to
+        * data using __skb_header_release in our skbs to allow skb_cow_header to
         * work optimally. This means that those skbs are not allowed to read
         * or write any data which is before the current position of skb->data
         * after that call and thus allow other skbs with the same data buffer