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Commit a4dff1bc authored by Stanislav Kinsbursky's avatar Stanislav Kinsbursky Committed by Trond Myklebust
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SUNRPC: skip dead but not buried clients on PipeFS events 



These clients can't be safely dereferenced if their counter in 0.

Signed-off-by: default avatarStanislav Kinsbursky <skinsbursky@parallels.com>
Signed-off-by: default avatarTrond Myklebust <Trond.Myklebust@netapp.com>
parent 5794d21e

net/sunrpc/clnt.c

+2 −1
Original line number Diff line number Diff line
@@ -218,7 +218,8 @@ static struct rpc_clnt *rpc_get_client_for_event(struct net *net, int event) 
		if (((event == RPC_PIPEFS_MOUNT) && clnt->cl_dentry) ||

		    ((event == RPC_PIPEFS_UMOUNT) && !clnt->cl_dentry))

			continue;

		atomic_inc(&clnt->cl_count);

		if (atomic_inc_not_zero(&clnt->cl_count) == 0)

			continue;

		spin_unlock(&sn->rpc_client_lock);

		return clnt;

	}