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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/ceph/messenger.c
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@@ -409,7 +409,7 @@ static void ceph_sock_write_space(struct sock *sk)
* and net/core/stream.c:sk_stream_write_space().
*/
if (con_flag_test(con, CON_FLAG_WRITE_PENDING)) {
if (sk_stream_wspace(sk) >= sk_stream_min_wspace(sk)) {
if (sk_stream_is_writeable(sk)) {
dout("%s %p queueing write work\n", __func__, con);
clear_bit(SOCK_NOSPACE, &sk->sk_socket->flags);
queue_con(con);