Merge branch 'regmap-linus' into regmap-next

[pandora-kernel.git] / net / sunrpc / xprtsock.c

diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index 72abb73..d7f97ef 100644 (file)
--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -37,7 +37,7 @@
 #include <linux/sunrpc/svcsock.h>
 #include <linux/sunrpc/xprtsock.h>
 #include <linux/file.h>
-#ifdef CONFIG_NFS_V4_1
+#ifdef CONFIG_SUNRPC_BACKCHANNEL
 #include <linux/sunrpc/bc_xprt.h>
 #endif
 
@@ -54,7 +54,8 @@ static void xs_close(struct rpc_xprt *xprt);
  * xprtsock tunables
  */
 unsigned int xprt_udp_slot_table_entries = RPC_DEF_SLOT_TABLE;
-unsigned int xprt_tcp_slot_table_entries = RPC_DEF_SLOT_TABLE;
+unsigned int xprt_tcp_slot_table_entries = RPC_MIN_SLOT_TABLE;
+unsigned int xprt_max_tcp_slot_table_entries = RPC_MAX_SLOT_TABLE;
 
 unsigned int xprt_min_resvport = RPC_DEF_MIN_RESVPORT;
 unsigned int xprt_max_resvport = RPC_DEF_MAX_RESVPORT;
@@ -75,6 +76,7 @@ static unsigned int xs_tcp_fin_timeout __read_mostly = XS_TCP_LINGER_TO;
 
 static unsigned int min_slot_table_size = RPC_MIN_SLOT_TABLE;
 static unsigned int max_slot_table_size = RPC_MAX_SLOT_TABLE;
+static unsigned int max_tcp_slot_table_limit = RPC_MAX_SLOT_TABLE_LIMIT;
 static unsigned int xprt_min_resvport_limit = RPC_MIN_RESVPORT;
 static unsigned int xprt_max_resvport_limit = RPC_MAX_RESVPORT;
 
@@ -103,6 +105,15 @@ static ctl_table xs_tunables_table[] = {
                .extra1         = &min_slot_table_size,
                .extra2         = &max_slot_table_size
        },
+       {
+               .procname       = "tcp_max_slot_table_entries",
+               .data           = &xprt_max_tcp_slot_table_entries,
+               .maxlen         = sizeof(unsigned int),
+               .mode           = 0644,
+               .proc_handler   = proc_dointvec_minmax,
+               .extra1         = &min_slot_table_size,
+               .extra2         = &max_tcp_slot_table_limit
+       },
        {
                .procname       = "min_resvport",
                .data           = &xprt_min_resvport,
@@ -755,6 +766,8 @@ static void xs_tcp_release_xprt(struct rpc_xprt *xprt, struct rpc_task *task)
        if (task == NULL)
                goto out_release;
        req = task->tk_rqstp;
+       if (req == NULL)
+               goto out_release;
        if (req->rq_bytes_sent == 0)
                goto out_release;
        if (req->rq_bytes_sent == req->rq_snd_buf.len)
@@ -1236,7 +1249,7 @@ static inline int xs_tcp_read_reply(struct rpc_xprt *xprt,
        return 0;
 }
 
-#if defined(CONFIG_NFS_V4_1)
+#if defined(CONFIG_SUNRPC_BACKCHANNEL)
 /*
  * Obtains an rpc_rqst previously allocated and invokes the common
  * tcp read code to read the data.  The result is placed in the callback
@@ -1299,7 +1312,7 @@ static inline int _xs_tcp_read_data(struct rpc_xprt *xprt,
 {
        return xs_tcp_read_reply(xprt, desc);
 }
-#endif /* CONFIG_NFS_V4_1 */
+#endif /* CONFIG_SUNRPC_BACKCHANNEL */
 
 /*
  * Read data off the transport.  This can be either an RPC_CALL or an
@@ -2489,7 +2502,8 @@ static int xs_init_anyaddr(const int family, struct sockaddr *sap)
 }
 
 static struct rpc_xprt *xs_setup_xprt(struct xprt_create *args,
-                                     unsigned int slot_table_size)
+                                     unsigned int slot_table_size,
+                                     unsigned int max_slot_table_size)
 {
        struct rpc_xprt *xprt;
        struct sock_xprt *new;
@@ -2499,7 +2513,8 @@ static struct rpc_xprt *xs_setup_xprt(struct xprt_create *args,
                return ERR_PTR(-EBADF);
        }
 
-       xprt = xprt_alloc(args->net, sizeof(*new), slot_table_size);
+       xprt = xprt_alloc(args->net, sizeof(*new), slot_table_size,
+                       max_slot_table_size);
        if (xprt == NULL) {
                dprintk("RPC:       xs_setup_xprt: couldn't allocate "
                                "rpc_xprt\n");
@@ -2541,7 +2556,8 @@ static struct rpc_xprt *xs_setup_local(struct xprt_create *args)
        struct rpc_xprt *xprt;
        struct rpc_xprt *ret;
 
-       xprt = xs_setup_xprt(args, xprt_tcp_slot_table_entries);
+       xprt = xs_setup_xprt(args, xprt_tcp_slot_table_entries,
+                       xprt_max_tcp_slot_table_entries);
        if (IS_ERR(xprt))
                return xprt;
        transport = container_of(xprt, struct sock_xprt, xprt);
@@ -2605,7 +2621,8 @@ static struct rpc_xprt *xs_setup_udp(struct xprt_create *args)
        struct sock_xprt *transport;
        struct rpc_xprt *ret;
 
-       xprt = xs_setup_xprt(args, xprt_udp_slot_table_entries);
+       xprt = xs_setup_xprt(args, xprt_udp_slot_table_entries,
+                       xprt_udp_slot_table_entries);
        if (IS_ERR(xprt))
                return xprt;
        transport = container_of(xprt, struct sock_xprt, xprt);
@@ -2681,7 +2698,8 @@ static struct rpc_xprt *xs_setup_tcp(struct xprt_create *args)
        struct sock_xprt *transport;
        struct rpc_xprt *ret;
 
-       xprt = xs_setup_xprt(args, xprt_tcp_slot_table_entries);
+       xprt = xs_setup_xprt(args, xprt_tcp_slot_table_entries,
+                       xprt_max_tcp_slot_table_entries);
        if (IS_ERR(xprt))
                return xprt;
        transport = container_of(xprt, struct sock_xprt, xprt);
@@ -2760,7 +2778,8 @@ static struct rpc_xprt *xs_setup_bc_tcp(struct xprt_create *args)
                 */
                 return args->bc_xprt->xpt_bc_xprt;
        }
-       xprt = xs_setup_xprt(args, xprt_tcp_slot_table_entries);
+       xprt = xs_setup_xprt(args, xprt_tcp_slot_table_entries,
+                       xprt_tcp_slot_table_entries);
        if (IS_ERR(xprt))
                return xprt;
        transport = container_of(xprt, struct sock_xprt, xprt);
@@ -2947,8 +2966,26 @@ static struct kernel_param_ops param_ops_slot_table_size = {
 #define param_check_slot_table_size(name, p) \
        __param_check(name, p, unsigned int);
 
+static int param_set_max_slot_table_size(const char *val,
+                                    const struct kernel_param *kp)
+{
+       return param_set_uint_minmax(val, kp,
+                       RPC_MIN_SLOT_TABLE,
+                       RPC_MAX_SLOT_TABLE_LIMIT);
+}
+
+static struct kernel_param_ops param_ops_max_slot_table_size = {
+       .set = param_set_max_slot_table_size,
+       .get = param_get_uint,
+};
+
+#define param_check_max_slot_table_size(name, p) \
+       __param_check(name, p, unsigned int);
+
 module_param_named(tcp_slot_table_entries, xprt_tcp_slot_table_entries,
                   slot_table_size, 0644);
+module_param_named(tcp_max_slot_table_entries, xprt_max_tcp_slot_table_entries,
+                  max_slot_table_size, 0644);
 module_param_named(udp_slot_table_entries, xprt_udp_slot_table_entries,
                   slot_table_size, 0644);