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nvmet-tcp: set MSG_SENDPAGE_NOTLAST with MSG_MORE when we have more to send 

We can signal the stack that this is not the last page coming and the
stack can build a larger tso segment, so go ahead and use it.

Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Sagi Grimberg 2020-05-04 22:20:02 -07:00 committed by Christoph Hellwig
parent 5bb052d7aa
commit 4eea804364
1 changed files with 4 additions and 4 deletions
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8
drivers/nvme/target/tcp.c
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@ -510,7 +510,7 @@ static int nvmet_try_send_data_pdu(struct nvmet_tcp_cmd *cmd)
ret = kernel_sendpage(cmd->queue->sock, virt_to_page(cmd->data_pdu), ret = kernel_sendpage(cmd->queue->sock, virt_to_page(cmd->data_pdu),
offset_in_page(cmd->data_pdu) + cmd->offset, offset_in_page(cmd->data_pdu) + cmd->offset,
left, MSG_DONTWAIT | MSG_MORE); left, MSG_DONTWAIT | MSG_MORE | MSG_SENDPAGE_NOTLAST);
if (ret <= 0) if (ret <= 0)
return ret; return ret;
@ -538,7 +538,7 @@ static int nvmet_try_send_data(struct nvmet_tcp_cmd *cmd, bool last_in_batch)
if ((!last_in_batch && cmd->queue->send_list_len) || if ((!last_in_batch && cmd->queue->send_list_len) ||
cmd->wbytes_done + left < cmd->req.transfer_len || cmd->wbytes_done + left < cmd->req.transfer_len ||
queue->data_digest || !queue->nvme_sq.sqhd_disabled) queue->data_digest || !queue->nvme_sq.sqhd_disabled)
flags |= MSG_MORE; flags |= MSG_MORE | MSG_SENDPAGE_NOTLAST;
ret = kernel_sendpage(cmd->queue->sock, page, cmd->offset, ret = kernel_sendpage(cmd->queue->sock, page, cmd->offset,
left, flags); left, flags);
@ -585,7 +585,7 @@ static int nvmet_try_send_response(struct nvmet_tcp_cmd *cmd,
int ret; int ret;
if (!last_in_batch && cmd->queue->send_list_len) if (!last_in_batch && cmd->queue->send_list_len)
flags |= MSG_MORE; flags |= MSG_MORE | MSG_SENDPAGE_NOTLAST;
else else
flags |= MSG_EOR; flags |= MSG_EOR;
@ -614,7 +614,7 @@ static int nvmet_try_send_r2t(struct nvmet_tcp_cmd *cmd, bool last_in_batch)
int ret; int ret;
if (!last_in_batch && cmd->queue->send_list_len) if (!last_in_batch && cmd->queue->send_list_len)
flags |= MSG_MORE; flags |= MSG_MORE | MSG_SENDPAGE_NOTLAST;
else else
flags |= MSG_EOR; flags |= MSG_EOR;