diff options
Diffstat (limited to 'include/net/tcp.h')
| -rw-r--r-- | include/net/tcp.h | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/include/net/tcp.h b/include/net/tcp.h index 0681afc62354..e0a65c067662 100644 --- a/include/net/tcp.h +++ b/include/net/tcp.h @@ -1870,12 +1870,16 @@ static inline u32 tcp_notsent_lowat(const struct tcp_sock *tp) return tp->notsent_lowat ?: net->ipv4.sysctl_tcp_notsent_lowat; } -static inline bool tcp_stream_memory_free(const struct sock *sk) +/* @wake is one when sk_stream_write_space() calls us. + * This sends EPOLLOUT only if notsent_bytes is half the limit. + * This mimics the strategy used in sock_def_write_space(). + */ +static inline bool tcp_stream_memory_free(const struct sock *sk, int wake) { const struct tcp_sock *tp = tcp_sk(sk); u32 notsent_bytes = tp->write_seq - tp->snd_nxt; - return notsent_bytes < tcp_notsent_lowat(tp); + return (notsent_bytes << wake) < tcp_notsent_lowat(tp); } #ifdef CONFIG_PROC_FS |