| Re: [PATCH v6 4/8] SUNRPC: setup rpcbind clients if service requires it [message #43884 is a reply to message #43853] |
Thu, 27 October 2011 21:27   |
bfields
Messages: 107
Registered: September 2007
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Senior Member |
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On Tue, Oct 25, 2011 at 02:17:08PM +0300, Stanislav Kinsbursky wrote:
> New function ("svc_uses_rpcbind") will be used to detect, that new service will
> send portmapper register calls. For such services we will create rpcbind
> clients and remove all stale portmap registrations.
> Also, svc_rpcb_cleanup() will be set as sv_shutdown callback for such services
> in case of this field wasn't initialized earlier. This will allow to destroy
> rpcbind clients when no other users of them left.
>
> Note: Currently, any creating service will be detected as portmap user.
> Probably, this is wrong. But now it depends on program versions "vs_hidden"
> flag.
>
> Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
>
> ---
> net/sunrpc/svc.c | 11 +++++++++--
> 1 files changed, 9 insertions(+), 2 deletions(-)
>
> diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c
> index d2d61bf..918edc3 100644
> --- a/net/sunrpc/svc.c
> +++ b/net/sunrpc/svc.c
> @@ -454,8 +454,15 @@ __svc_create(struct svc_program *prog, unsigned int bufsize, int npools,
> spin_lock_init(&pool->sp_lock);
> }
>
> - /* Remove any stale portmap registrations */
> - svc_unregister(serv);
> + if (svc_uses_rpcbind(serv)) {
> + if (svc_rpcb_setup(serv) < 0) {
> + kfree(serv->sv_pools);
> + kfree(serv);
> + return NULL;
Nit: could we convert this (and the previous failure to allocate
sv_pools) to the usual pattern of collecting the cleanup at the end and
jumping to it with a goto?
Looks fine otherwise.
--b.
> + }
> + if (!serv->sv_shutdown)
> + serv->sv_shutdown = svc_rpcb_cleanup;
> + }
>
> return serv;
> }
>
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