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nfs41: Rename rq_received to rq_reply_bytes_recvd 

The 'rq_received' member of 'struct rpc_rqst' is used to track when we
have received a reply to our request.  With v4.1, the backchannel
can now accept callback requests over the existing connection.  Rename
this field to make it clear that it is only used for tracking reply bytes
and not all bytes received on the connection.

Signed-off-by: Ricardo Labiaga <Ricardo.Labiaga@netapp.com>
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
This commit is contained in:
Ricardo Labiaga 2009-04-01 09:23:28 -04:00 committed by Benny Halevy
parent 281fe15dc1
commit dd2b63d049
5 changed files with 16 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
include/linux/sunrpc/xprt.h
View File

@ -67,7 +67,8 @@ struct rpc_rqst {
struct rpc_task * rq_task; /* RPC task data */
__be32 rq_xid; /* request XID */
int rq_cong; /* has incremented xprt->cong */
int rq_received; /* receive completed */
int rq_reply_bytes_recvd; /* number of reply */
/* bytes received */
u32 rq_seqno; /* gss seq no. used on req. */
int rq_enc_pages_num;
struct page **rq_enc_pages; /* scratch pages for use by

2
net/sunrpc/backchannel_rqst.c
View File

@ -230,7 +230,7 @@ struct rpc_rqst *xprt_alloc_bc_request(struct rpc_xprt *xprt)
if (req != NULL) {
set_bit(RPC_BC_PA_IN_USE, &req->rq_bc_pa_state);
req->rq_received = 0;
req->rq_reply_bytes_recvd = 0;
req->rq_bytes_sent = 0;
memcpy(&req->rq_private_buf, &req->rq_rcv_buf,
sizeof(req->rq_private_buf));

8
net/sunrpc/clnt.c
View File

@ -1258,8 +1258,8 @@ call_status(struct rpc_task *task)
struct rpc_rqst *req = task->tk_rqstp;
int status;
if (req->rq_received > 0 && !req->rq_bytes_sent)
task->tk_status = req->rq_received;
if (req->rq_reply_bytes_recvd > 0 && !req->rq_bytes_sent)
task->tk_status = req->rq_reply_bytes_recvd;
dprint_status(task);
@ -1376,7 +1376,7 @@ call_decode(struct rpc_task *task)
/*
* Ensure that we see all writes made by xprt_complete_rqst()
* before it changed req->rq_received.
* before it changed req->rq_reply_bytes_recvd.
*/
smp_rmb();
req->rq_rcv_buf.len = req->rq_private_buf.len;
@ -1417,7 +1417,7 @@ out_retry:
task->tk_status = 0;
/* Note: rpc_verify_header() may have freed the RPC slot */
if (task->tk_rqstp == req) {
req->rq_received = req->rq_rcv_buf.len = 0;
req->rq_reply_bytes_recvd = req->rq_rcv_buf.len = 0;
if (task->tk_client->cl_discrtry)
xprt_conditional_disconnect(task->tk_xprt,
req->rq_connect_cookie);

2
net/sunrpc/stats.c
View File

@ -156,7 +156,7 @@ void rpc_count_iostats(struct rpc_task *task)
op_metrics->om_timeouts += task->tk_timeouts;
op_metrics->om_bytes_sent += task->tk_bytes_sent;
op_metrics->om_bytes_recv += req->rq_received;
op_metrics->om_bytes_recv += req->rq_reply_bytes_recvd;
queue = (long)req->rq_xtime - task->tk_start;
if (queue < 0)

15
net/sunrpc/xprt.c
View File

@ -806,9 +806,10 @@ void xprt_complete_rqst(struct rpc_task *task, int copied)
list_del_init(&req->rq_list);
req->rq_private_buf.len = copied;
/* Ensure all writes are done before we update req->rq_received */
/* Ensure all writes are done before we update */
/* req->rq_reply_bytes_recvd */
smp_wmb();
req->rq_received = copied;
req->rq_reply_bytes_recvd = copied;
rpc_wake_up_queued_task(&xprt->pending, task);
}
EXPORT_SYMBOL_GPL(xprt_complete_rqst);
@ -823,7 +824,7 @@ static void xprt_timer(struct rpc_task *task)
dprintk("RPC: %5u xprt_timer\n", task->tk_pid);
spin_lock_bh(&xprt->transport_lock);
if (!req->rq_received) {
if (!req->rq_reply_bytes_recvd) {
if (xprt->ops->timer)
xprt->ops->timer(task);
} else
@ -845,8 +846,8 @@ int xprt_prepare_transmit(struct rpc_task *task)
dprintk("RPC: %5u xprt_prepare_transmit\n", task->tk_pid);
spin_lock_bh(&xprt->transport_lock);
if (req->rq_received && !req->rq_bytes_sent) {
err = req->rq_received;
if (req->rq_reply_bytes_recvd && !req->rq_bytes_sent) {
err = req->rq_reply_bytes_recvd;
goto out_unlock;
}
if (!xprt->ops->reserve_xprt(task))
@ -875,7 +876,7 @@ void xprt_transmit(struct rpc_task *task)
dprintk("RPC: %5u xprt_transmit(%u)\n", task->tk_pid, req->rq_slen);
if (!req->rq_received) {
if (!req->rq_reply_bytes_recvd) {
if (list_empty(&req->rq_list) && rpc_reply_expected(task)) {
/*
* Add to the list only if we're expecting a reply
@ -914,7 +915,7 @@ void xprt_transmit(struct rpc_task *task)
/* Don't race with disconnect */
if (!xprt_connected(xprt))
task->tk_status = -ENOTCONN;
else if (!req->rq_received && rpc_reply_expected(task)) {
else if (!req->rq_reply_bytes_recvd && rpc_reply_expected(task)) {
/*
* Sleep on the pending queue since
* we're expecting a reply.