提交 9a8f6b5e 编写于 作者: T Trond Myklebust 提交者: Anna Schumaker

SUNRPC: Ensure get_rpccred() and put_rpccred() can take NULL arguments

Signed-off-by: NTrond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: NAnna Schumaker <Anna.Schumaker@Netapp.com>
上级 f538d0ba
......@@ -202,7 +202,8 @@ char * rpcauth_stringify_acceptor(struct rpc_cred *);
static inline
struct rpc_cred * get_rpccred(struct rpc_cred *cred)
{
atomic_inc(&cred->cr_count);
if (cred != NULL)
atomic_inc(&cred->cr_count);
return cred;
}
......
......@@ -703,8 +703,7 @@ rpcauth_bindcred(struct rpc_task *task, struct rpc_cred *cred, int flags)
new = rpcauth_bind_new_cred(task, lookupflags);
if (IS_ERR(new))
return PTR_ERR(new);
if (req->rq_cred != NULL)
put_rpccred(req->rq_cred);
put_rpccred(req->rq_cred);
req->rq_cred = new;
return 0;
}
......@@ -712,6 +711,8 @@ rpcauth_bindcred(struct rpc_task *task, struct rpc_cred *cred, int flags)
void
put_rpccred(struct rpc_cred *cred)
{
if (cred == NULL)
return;
/* Fast path for unhashed credentials */
if (test_bit(RPCAUTH_CRED_HASHED, &cred->cr_flags) == 0) {
if (atomic_dec_and_test(&cred->cr_count))
......
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