| Message ID | 20220127200937.2157402-2-eric.dumazet@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | SUNRPC: add some netns refcount trackers | expand |
> On Jan 27, 2022, at 3:09 PM, Eric Dumazet <eric.dumazet@gmail.com> wrote: > > From: Eric Dumazet <edumazet@google.com> > > struct svc_xprt holds a long lived reference to a netns, > it is worth tracking it. > > Signed-off-by: Eric Dumazet <edumazet@google.com> I haven't followed the requirements for the extended tracking, but I have no objection to this change. Acked-by: Chuck Lever <chuck.lever@oracle.com> > --- > 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 > -- Chuck Lever
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);