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mptcp: remove inner wait loop from mptcp_sendmsg_frag

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previous patches made sure we only call into this function
when these prerequisites are met, so no need to wait on the
subflow socket anymore.

Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/7
Acked-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florian Westphal 2020-05-16 10:46:22 +02:00 committed by David S. Miller
parent 17091708d1
commit 5c8264435d
1 changed files with 0 additions and 14 deletions
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14
net/mptcp/protocol.c
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@ -510,20 +510,6 @@ static int mptcp_sendmsg_frag(struct sock *sk, struct sock *ssk,
* fooled into a warning if we don't init here
*/
pfrag = sk_page_frag(sk);
while ((!retransmission && !mptcp_page_frag_refill(ssk, pfrag)) ||
!mptcp_ext_cache_refill(msk)) {
ret = sk_stream_wait_memory(ssk, timeo);
if (ret)
return ret;
/* if sk_stream_wait_memory() sleeps snd_una can change
* significantly, refresh the rtx queue
*/
mptcp_clean_una(sk);
if (unlikely(__mptcp_needs_tcp_fallback(msk)))
return 0;
}
if (!retransmission) {
write_seq = &msk->write_seq;
page = pfrag->page;