Commit 0a702350 authored by Trond Myklebust's avatar Trond Myklebust Committed by Greg Kroah-Hartman

NFSv4.1: Fix a deadlock in layoutget

commit 8ac09251 upstream.

We cannot call nfs4_handle_exception() without first ensuring that the
slot has been freed. If not, we end up deadlocking with the process
waiting for recovery to complete, and recovery waiting for the slot
table to drain.

Fixes: 2e80dbe7 ("NFSv4.1: Close callback races for OPEN, LAYOUTGET...")
Signed-off-by: default avatarTrond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 73fdda3b
......@@ -8371,6 +8371,7 @@ nfs4_layoutget_handle_exception(struct rpc_task *task,
goto out;
}
nfs4_sequence_free_slot(&lgp->res.seq_res);
err = nfs4_handle_exception(server, nfs4err, exception);
if (!status) {
if (exception->retry)
......
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