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xprtrdma: Remove the RPCRDMA_REQ_F_PENDING flag 

Commit 9590d083c1 ("xprtrdma: Use xprt_pin_rqst in
rpcrdma_reply_handler") pins incoming RPC/RDMA replies so they
can be left in the pending requests queue while they are being
processed without introducing a race between ->buf_free and the
transport's reply handler. Therefore RPCRDMA_REQ_F_PENDING is no
longer necessary.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
Chuck Lever 2019-06-19 10:32:54 -04:00 committed by Anna Schumaker
parent 05eb06d866
commit 5809ea4f7c
3 changed files with 1 additions and 5 deletions
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1
net/sunrpc/xprtrdma/rpc_rdma.c
View File

@ -1371,7 +1371,6 @@ void rpcrdma_reply_handler(struct rpcrdma_rep *rep)
}
req->rl_reply = rep;
rep->rr_rqst = rqst;
clear_bit(RPCRDMA_REQ_F_PENDING, &req->rl_flags);
trace_xprtrdma_reply(rqst->rq_task, rep, req, credits);
queue_work(buf->rb_completion_wq, &rep->rr_work);

4
net/sunrpc/xprtrdma/transport.c
View File

@ -618,8 +618,7 @@ xprt_rdma_free(struct rpc_task *task)
struct rpcrdma_xprt *r_xprt = rpcx_to_rdmax(rqst->rq_xprt);
struct rpcrdma_req *req = rpcr_to_rdmar(rqst);
if (test_bit(RPCRDMA_REQ_F_PENDING, &req->rl_flags))
rpcrdma_release_rqst(r_xprt, req);
rpcrdma_release_rqst(r_xprt, req);
trace_xprtrdma_op_free(task, req);
}
@ -667,7 +666,6 @@ xprt_rdma_send_request(struct rpc_rqst *rqst)
goto drop_connection;
rqst->rq_xtime = ktime_get();
__set_bit(RPCRDMA_REQ_F_PENDING, &req->rl_flags);
if (rpcrdma_ep_post(&r_xprt->rx_ia, &r_xprt->rx_ep, req))
goto drop_connection;

1
net/sunrpc/xprtrdma/xprt_rdma.h
View File

@ -344,7 +344,6 @@ struct rpcrdma_req {
/* rl_flags */
enum {
RPCRDMA_REQ_F_PENDING = 0,
RPCRDMA_REQ_F_TX_RESOURCES,
};