diff options
| author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2011-03-15 19:56:30 -0400 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2011-03-17 12:38:59 -0400 |
| commit | a8de240a9074b72b156d9e6d53f00076e6cd5f03 (patch) | |
| tree | 9436ca858870ce89af75703b61a2c25889db354e /net | |
| parent | e020c6800c9621a77223bf2c1ff68180e41e8ebf (diff) | |
| download | lwn-a8de240a9074b72b156d9e6d53f00076e6cd5f03.tar.gz lwn-a8de240a9074b72b156d9e6d53f00076e6cd5f03.zip | |
SUNRPC: Convert struct rpc_xprt to use atomic_t counters
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'net')
| -rw-r--r-- | net/sunrpc/xprt.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/net/sunrpc/xprt.c b/net/sunrpc/xprt.c index 8bdcdbe07b98..4499b5a51763 100644 --- a/net/sunrpc/xprt.c +++ b/net/sunrpc/xprt.c @@ -964,7 +964,7 @@ struct rpc_xprt *xprt_alloc(struct net *net, int size, int max_req) xprt = kzalloc(size, GFP_KERNEL); if (xprt == NULL) goto out; - kref_init(&xprt->kref); + atomic_set(&xprt->count, 1); xprt->max_reqs = max_req; xprt->slot = kcalloc(max_req, sizeof(struct rpc_rqst), GFP_KERNEL); @@ -1144,13 +1144,11 @@ found: /** * xprt_destroy - destroy an RPC transport, killing off all requests. - * @kref: kref for the transport to destroy + * @xprt: transport to destroy * */ -static void xprt_destroy(struct kref *kref) +static void xprt_destroy(struct rpc_xprt *xprt) { - struct rpc_xprt *xprt = container_of(kref, struct rpc_xprt, kref); - dprintk("RPC: destroying transport %p\n", xprt); xprt->shutdown = 1; del_timer_sync(&xprt->timer); @@ -1174,7 +1172,8 @@ static void xprt_destroy(struct kref *kref) */ void xprt_put(struct rpc_xprt *xprt) { - kref_put(&xprt->kref, xprt_destroy); + if (atomic_dec_and_test(&xprt->count)) + xprt_destroy(xprt); } /** @@ -1184,6 +1183,7 @@ void xprt_put(struct rpc_xprt *xprt) */ struct rpc_xprt *xprt_get(struct rpc_xprt *xprt) { - kref_get(&xprt->kref); - return xprt; + if (atomic_inc_not_zero(&xprt->count)) + return xprt; + return NULL; } |