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authorDavid S. Miller <davem@davemloft.net>2009-02-17 21:24:05 -0800
committerDavid S. Miller <davem@davemloft.net>2009-02-17 21:24:05 -0800
commit92a0acce186cde8ead56c6915d9479773673ea1a (patch)
tree97b7663f77f8274cb52d429c8a7db97c70daf745 /include
parent34edaa88324004baf4884fb0388f86059d9c4878 (diff)
downloadlinux-2.6.38-lt-ux500-92a0acce186cde8ead56c6915d9479773673ea1a.tar.gz
net: Kill skb_truesize_check(), it only catches false-positives.
A long time ago we had bugs, primarily in TCP, where we would modify skb->truesize (for TSO queue collapsing) in ways which would corrupt the socket memory accounting. skb_truesize_check() was added in order to try and catch this error more systematically. However this debugging check has morphed into a Frankenstein of sorts and these days it does nothing other than catch false-positives. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
-rw-r--r--include/linux/skbuff.h9
-rw-r--r--include/net/sock.h1
2 files changed, 0 insertions, 10 deletions
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index cf2cb50f77d..9dcf956ad18 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -416,15 +416,6 @@ extern void skb_over_panic(struct sk_buff *skb, int len,
void *here);
extern void skb_under_panic(struct sk_buff *skb, int len,
void *here);
-extern void skb_truesize_bug(struct sk_buff *skb);
-
-static inline void skb_truesize_check(struct sk_buff *skb)
-{
- int len = sizeof(struct sk_buff) + skb->len;
-
- if (unlikely((int)skb->truesize < len))
- skb_truesize_bug(skb);
-}
extern int skb_append_datato_frags(struct sock *sk, struct sk_buff *skb,
int getfrag(void *from, char *to, int offset,
diff --git a/include/net/sock.h b/include/net/sock.h
index ce3b5b62268..eefeeaf7fc4 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -860,7 +860,6 @@ static inline void sk_mem_uncharge(struct sock *sk, int size)
static inline void sk_wmem_free_skb(struct sock *sk, struct sk_buff *skb)
{
- skb_truesize_check(skb);
sock_set_flag(sk, SOCK_QUEUE_SHRUNK);
sk->sk_wmem_queued -= skb->truesize;
sk_mem_uncharge(sk, skb->truesize);