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authorDavid S. Miller <davem@davemloft.net>2008-01-11 00:56:38 -0500
committerDavid S. Miller <davem@davemloft.net>2008-01-28 18:01:42 -0500
commit9993e7d313e80bdc005d09c7def91903e0068f07 (patch)
treeed7c65b35fd3392948ab2f6b225f69225fdcbba8 /include/net
parente186932b3d26bd975022a1e254407e95dddceae7 (diff)
[TCP]: Do not purge sk_forward_alloc entirely in tcp_delack_timer().
Otherwise we beat heavily on the global tcp_memory atomics when all of the sockets in the system are slowly sending perioding packet clumps. Noticed and suggested by Eric Dumazet. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net')
-rw-r--r--include/net/sock.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/include/net/sock.h b/include/net/sock.h
index 786fae858e77..902324488d0f 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -759,6 +759,14 @@ static inline void sk_mem_reclaim(struct sock *sk)
759 __sk_mem_reclaim(sk); 759 __sk_mem_reclaim(sk);
760} 760}
761 761
762static inline void sk_mem_reclaim_partial(struct sock *sk)
763{
764 if (!sk_has_account(sk))
765 return;
766 if (sk->sk_forward_alloc > SK_MEM_QUANTUM)
767 __sk_mem_reclaim(sk);
768}
769
762static inline void sk_mem_charge(struct sock *sk, int size) 770static inline void sk_mem_charge(struct sock *sk, int size)
763{ 771{
764 if (!sk_has_account(sk)) 772 if (!sk_has_account(sk))