Commit 6cdef8a6 authored by Eric Dumazet's avatar Eric Dumazet Committed by David S. Miller
Browse files

SUNRPC: add netns refcount tracker to struct svc_xprt 



struct svc_xprt holds a long lived reference to a netns,
it is worth tracking it.

Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
Acked-by: default avatarChuck Lever <chuck.lever@oracle.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 960b0033

include/linux/sunrpc/svc_xprt.h

+1 −0
Original line number Diff line number Diff line
@@ -88,6 +88,7 @@ struct svc_xprt { 
	struct list_head	xpt_users;	/* callbacks on free */



	struct net		*xpt_net;

	netns_tracker		ns_tracker;

	const struct cred	*xpt_cred;

	struct rpc_xprt		*xpt_bc_xprt;	/* NFSv4.1 backchannel */

	struct rpc_xprt_switch	*xpt_bc_xps;	/* NFSv4.1 backchannel */

net/sunrpc/svc_xprt.c

+2 −2
Original line number Diff line number Diff line
@@ -162,7 +162,7 @@ static void svc_xprt_free(struct kref *kref) 
	if (test_bit(XPT_CACHE_AUTH, &xprt->xpt_flags))

		svcauth_unix_info_release(xprt);

	put_cred(xprt->xpt_cred);

	put_net(xprt->xpt_net);

	put_net_track(xprt->xpt_net, &xprt->ns_tracker);

	/* See comment on corresponding get in xs_setup_bc_tcp(): */

	if (xprt->xpt_bc_xprt)

		xprt_put(xprt->xpt_bc_xprt);
@@ -198,7 +198,7 @@ void svc_xprt_init(struct net *net, struct svc_xprt_class *xcl, 
	mutex_init(&xprt->xpt_mutex);

	spin_lock_init(&xprt->xpt_lock);

	set_bit(XPT_BUSY, &xprt->xpt_flags);

	xprt->xpt_net = get_net(net);

	xprt->xpt_net = get_net_track(net, &xprt->ns_tracker, GFP_ATOMIC);

	strcpy(xprt->xpt_remotebuf, "uninitialized");

}

EXPORT_SYMBOL_GPL(svc_xprt_init);