diff options
Diffstat (limited to 'net/sunrpc/xprt.c')
| -rw-r--r-- | net/sunrpc/xprt.c | 24 |
1 files changed, 21 insertions, 3 deletions
diff --git a/net/sunrpc/xprt.c b/net/sunrpc/xprt.c index 37edea6fa92d..d8fd84c0cbba 100644 --- a/net/sunrpc/xprt.c +++ b/net/sunrpc/xprt.c @@ -1307,7 +1307,7 @@ void xprt_release(struct rpc_task *task) static void xprt_init(struct rpc_xprt *xprt, struct net *net) { - atomic_set(&xprt->count, 1); + kref_init(&xprt->kref); spin_lock_init(&xprt->transport_lock); spin_lock_init(&xprt->reserve_lock); @@ -1415,6 +1415,24 @@ static void xprt_destroy(struct rpc_xprt *xprt) xprt->ops->destroy(xprt); } +static void xprt_destroy_kref(struct kref *kref) +{ + xprt_destroy(container_of(kref, struct rpc_xprt, kref)); +} + +/** + * xprt_get - return a reference to an RPC transport. + * @xprt: pointer to the transport + * + */ +struct rpc_xprt *xprt_get(struct rpc_xprt *xprt) +{ + if (xprt != NULL && kref_get_unless_zero(&xprt->kref)) + return xprt; + return NULL; +} +EXPORT_SYMBOL_GPL(xprt_get); + /** * xprt_put - release a reference to an RPC transport. * @xprt: pointer to the transport @@ -1422,7 +1440,7 @@ static void xprt_destroy(struct rpc_xprt *xprt) */ void xprt_put(struct rpc_xprt *xprt) { - if (atomic_dec_and_test(&xprt->count)) - xprt_destroy(xprt); + if (xprt != NULL) + kref_put(&xprt->kref, xprt_destroy_kref); } EXPORT_SYMBOL_GPL(xprt_put); |