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svcrdma: Add a "deferred close" helper

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Refactor a bit of commonly used logic so that every site that wants
a close deferred to an nfsd thread does all the right things
(set_bit(XPT_CLOSE) then enqueue).

Also, once XPT_CLOSE is set on a transport, it is never cleared. If
XPT_CLOSE is already set, then the close is already being handled
and the enqueue can be skipped.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Chuck Lever
2021-02-20 18:53:40 -05:00
parent c558d47596
commit e844d307d4
7 changed files with 30 additions and 24 deletions
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3
net/sunrpc/xprtrdma/svc_rdma_recvfrom.c
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@@ -367,8 +367,7 @@ static void svc_rdma_wc_receive(struct ib_cq *cq, struct ib_wc *wc)
flushed:
svc_rdma_recv_ctxt_put(rdma, ctxt);
set_bit(XPT_CLOSE, &rdma->sc_xprt.xpt_flags);
svc_xprt_enqueue(&rdma->sc_xprt);
svc_xprt_deferred_close(&rdma->sc_xprt);
}
/**