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authorChuck Lever <chuck.lever@oracle.com>2019-08-19 18:43:17 -0400
committerAnna Schumaker <Anna.Schumaker@Netapp.com>2019-08-20 14:06:03 -0400
commit395790566eec37706dedeb94779045adc3a7581e (patch)
tree3486f83f125d7227f8b5a2b78d9cb6d9e1ea0fd8
parenteed48a9c161588544999ee8d451392921d846ee8 (diff)
downloadlinux-395790566eec37706dedeb94779045adc3a7581e.tar.bz2
xprtrdma: Toggle XPRT_CONGESTED in xprtrdma's slot methods
Commit 48be539dd44a ("xprtrdma: Introduce ->alloc_slot call-out for xprtrdma") added a separate alloc_slot and free_slot to the RPC/RDMA transport. Later, commit 75891f502f5f ("SUNRPC: Support for congestion control when queuing is enabled") modified the generic alloc/free_slot methods, but neglected the methods in xprtrdma. Found via code review. Fixes: 75891f502f5f ("SUNRPC: Support for congestion control ... ") Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
-rw-r--r--net/sunrpc/xprtrdma/transport.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/net/sunrpc/xprtrdma/transport.c b/net/sunrpc/xprtrdma/transport.c
index 2ec349ed4770..f4763e8a6761 100644
--- a/net/sunrpc/xprtrdma/transport.c
+++ b/net/sunrpc/xprtrdma/transport.c
@@ -571,6 +571,7 @@ xprt_rdma_alloc_slot(struct rpc_xprt *xprt, struct rpc_task *task)
return;
out_sleep:
+ set_bit(XPRT_CONGESTED, &xprt->state);
rpc_sleep_on(&xprt->backlog, task, NULL);
task->tk_status = -EAGAIN;
}
@@ -589,7 +590,8 @@ xprt_rdma_free_slot(struct rpc_xprt *xprt, struct rpc_rqst *rqst)
memset(rqst, 0, sizeof(*rqst));
rpcrdma_buffer_put(&r_xprt->rx_buf, rpcr_to_rdmar(rqst));
- rpc_wake_up_next(&xprt->backlog);
+ if (unlikely(!rpc_wake_up_next(&xprt->backlog)))
+ clear_bit(XPRT_CONGESTED, &xprt->state);
}
static bool rpcrdma_check_regbuf(struct rpcrdma_xprt *r_xprt,