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authorTrond Myklebust <Trond.Myklebust@netapp.com>2011-07-17 16:01:03 -0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2011-07-17 16:01:03 -0400
commit43cedbf0e8dfb9c5610eb7985d5f21263e313802 (patch)
tree7758630292b6a276a3db72e63803ddc02c0a4444 /net/sunrpc/xprtrdma
parentf85ef69ce08bc2209858135328335f668ba35bdb (diff)
downloadop-kernel-dev-43cedbf0e8dfb9c5610eb7985d5f21263e313802.zip
op-kernel-dev-43cedbf0e8dfb9c5610eb7985d5f21263e313802.tar.gz
SUNRPC: Ensure that we grab the XPRT_LOCK before calling xprt_alloc_slot
This throttles the allocation of new slots when the socket is busy reconnecting and/or is out of buffer space. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'net/sunrpc/xprtrdma')
-rw-r--r--net/sunrpc/xprtrdma/transport.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/net/sunrpc/xprtrdma/transport.c b/net/sunrpc/xprtrdma/transport.c
index 0867070..674a492 100644
--- a/net/sunrpc/xprtrdma/transport.c
+++ b/net/sunrpc/xprtrdma/transport.c
@@ -452,9 +452,8 @@ xprt_rdma_connect(struct rpc_task *task)
}
static int
-xprt_rdma_reserve_xprt(struct rpc_task *task)
+xprt_rdma_reserve_xprt(struct rpc_xprt *xprt, struct rpc_task *task)
{
- struct rpc_xprt *xprt = task->tk_xprt;
struct rpcrdma_xprt *r_xprt = rpcx_to_rdmax(xprt);
int credits = atomic_read(&r_xprt->rx_buf.rb_credits);
@@ -466,7 +465,7 @@ xprt_rdma_reserve_xprt(struct rpc_task *task)
BUG_ON(r_xprt->rx_buf.rb_cwndscale <= 0);
}
xprt->cwnd = credits * r_xprt->rx_buf.rb_cwndscale;
- return xprt_reserve_xprt_cong(task);
+ return xprt_reserve_xprt_cong(xprt, task);
}
/*
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