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net: add sk_stream_is_writeable() helper

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Several call sites use the hardcoded following condition :

sk_stream_wspace(sk) >= sk_stream_min_wspace(sk)

Lets use a helper because TCP_NOTSENT_LOWAT support will change this
condition for TCP sockets.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Neal Cardwell <ncardwell@google.com>
Cc: Yuchung Cheng <ycheng@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet
2013-07-22 20:26:31 -07:00
committed by David S. Miller
parent 4d58c02520
commit 64dc61306c
7 changed files with 12 additions and 8 deletions
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2
net/sunrpc/xprtsock.c
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@@ -1602,7 +1602,7 @@ static void xs_tcp_write_space(struct sock *sk)
read_lock_bh(&sk->sk_callback_lock);
/* from net/core/stream.c:sk_stream_write_space */
if (sk_stream_wspace(sk) >= sk_stream_min_wspace(sk))
if (sk_stream_is_writeable(sk))
xs_write_space(sk);
read_unlock_bh(&sk->sk_callback_lock);