svc_serv-> sv_bc_xprt is netns-unsafe and cannot be used as pointer.
To prevent its misuse in future it is replaced by new boolean flag.
Signed-off-by: Vasily Averin <vvs@virtuozzo.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
goto err_bind;
}
- ret = -EPROTONOSUPPORT;
+ ret = 0;
if (!IS_ENABLED(CONFIG_NFS_V4_1) || minorversion == 0)
ret = nfs4_callback_up_net(serv, net);
- else if (xprt->ops->bc_up)
- ret = xprt->ops->bc_up(serv, net);
+ else if (xprt->ops->bc_setup)
+ serv->sv_bc_enabled = true;
+ else
+ ret = -EPROTONOSUPPORT;
if (ret < 0) {
printk(KERN_ERR "NFS: callback service start failed\n");
/*
* Determine if a shared backchannel is in use
*/
-static inline int svc_is_backchannel(const struct svc_rqst *rqstp)
+static inline bool svc_is_backchannel(const struct svc_rqst *rqstp)
{
- if (rqstp->rq_server->sv_bc_xprt)
- return 1;
- return 0;
+ return rqstp->rq_server->sv_bc_enabled;
}
#else /* CONFIG_SUNRPC_BACKCHANNEL */
static inline int xprt_setup_backchannel(struct rpc_xprt *xprt,
return 0;
}
-static inline int svc_is_backchannel(const struct svc_rqst *rqstp)
+static inline bool svc_is_backchannel(const struct svc_rqst *rqstp)
{
- return 0;
+ return false;
}
static inline void xprt_free_bc_request(struct rpc_rqst *req)
spinlock_t sv_cb_lock; /* protects the svc_cb_list */
wait_queue_head_t sv_cb_waitq; /* sleep here if there are no
* entries in the svc_cb_list */
- struct svc_xprt *sv_bc_xprt; /* callback on fore channel */
+ bool sv_bc_enabled; /* service uses backchannel */
#endif /* CONFIG_SUNRPC_BACKCHANNEL */
};
svc_xprt_init(net, &svc_tcp_bc_class, xprt, serv);
set_bit(XPT_CONG_CTRL, &svsk->sk_xprt.xpt_flags);
- serv->sv_bc_xprt = xprt;
-
return xprt;
}
svc_xprt_init(net, &svc_rdma_bc_class, xprt, serv);
set_bit(XPT_CONG_CTRL, &xprt->xpt_flags);
- serv->sv_bc_xprt = xprt;
dprintk("svcrdma: %s(%p)\n", __func__, xprt);
return xprt;