From: Eric Dumazet <edumazet@xxxxxxxxxx>
struct svc_xprt holds a long lived reference to a netns,
it is worth tracking it.
Signed-off-by: Eric Dumazet <edumazet@xxxxxxxxxx>
---
include/linux/sunrpc/svc_xprt.h | 1 +
net/sunrpc/svc_xprt.c | 4 ++--
2 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/include/linux/sunrpc/svc_xprt.h b/include/linux/sunrpc/svc_xprt.h
index 571f605bc91ef8fa190e7fd5504efb76ec3fa89e..382af90320acc3a7b3817bf66f65fbb15447ae7d 100644
--- a/include/linux/sunrpc/svc_xprt.h
+++ b/include/linux/sunrpc/svc_xprt.h
@@ -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 */
diff --git a/net/sunrpc/svc_xprt.c b/net/sunrpc/svc_xprt.c
index b21ad79941474685597c9c7c07b862ef7e98ad74..db878e833b672864551bc9ef884a3cd6ca6c2603 100644
--- a/net/sunrpc/svc_xprt.c
+++ b/net/sunrpc/svc_xprt.c
@@ -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);
--
2.35.0.rc0.227.g00780c9af4-goog
