umode_t ftype = 0;
__be32 err;
int host_err;
+ bool get_write_count;
int size_change = 0;
if (iap->ia_valid & (ATTR_ATIME | ATTR_MTIME | ATTR_SIZE))
if (iap->ia_valid & ATTR_SIZE)
ftype = S_IFREG;
+ /* Callers that do fh_verify should do the fh_want_write: */
+ get_write_count = !fhp->fh_dentry;
+
/* Get inode */
err = fh_verify(rqstp, fhp, ftype, accmode);
if (err)
goto out;
+ if (get_write_count) {
+ host_err = fh_want_write(fhp);
+ if (host_err)
+ return nfserrno(host_err);
+ }
dentry = fhp->fh_dentry;
inode = dentry->d_inode;
if (ffhp->fh_export->ex_path.dentry != tfhp->fh_export->ex_path.dentry)
goto out_dput_new;
- host_err = vfs_rename(fdir, odentry, tdir, ndentry, NULL);
+ host_err = vfs_rename(fdir, odentry, tdir, ndentry, NULL, 0);
if (!host_err) {
host_err = commit_metadata(tfhp);
if (!host_err)
dput(odentry);
out_nfserr:
err = nfserrno(host_err);
-
- /* we cannot reply on fh_unlock on the two filehandles,
+ /*
+ * We cannot rely on fh_unlock on the two filehandles,
* as that would do the wrong thing if the two directories
- * were the same, so again we do it by hand
+ * were the same, so again we do it by hand.
*/
fill_post_wcc(ffhp);
fill_post_wcc(tfhp);
return ERR_PTR(err);
}
+ struct rpc_clnt *rpc_create_xprt(struct rpc_create_args *args,
+ struct rpc_xprt *xprt)
+ {
+ struct rpc_clnt *clnt = NULL;
+
+ clnt = rpc_new_client(args, xprt, NULL);
+ if (IS_ERR(clnt))
+ return clnt;
+
+ if (!(args->flags & RPC_CLNT_CREATE_NOPING)) {
+ int err = rpc_ping(clnt);
+ if (err != 0) {
+ rpc_shutdown_client(clnt);
+ return ERR_PTR(err);
+ }
+ }
+
+ clnt->cl_softrtry = 1;
+ if (args->flags & RPC_CLNT_CREATE_HARDRTRY)
+ clnt->cl_softrtry = 0;
+
+ if (args->flags & RPC_CLNT_CREATE_AUTOBIND)
+ clnt->cl_autobind = 1;
+ if (args->flags & RPC_CLNT_CREATE_DISCRTRY)
+ clnt->cl_discrtry = 1;
+ if (!(args->flags & RPC_CLNT_CREATE_QUIET))
+ clnt->cl_chatty = 1;
+
+ return clnt;
+ }
+ EXPORT_SYMBOL_GPL(rpc_create_xprt);
+
/**
* rpc_create - create an RPC client and transport with one call
* @args: rpc_clnt create argument structure
struct rpc_clnt *rpc_create(struct rpc_create_args *args)
{
struct rpc_xprt *xprt;
- struct rpc_clnt *clnt;
struct xprt_create xprtargs = {
.net = args->net,
.ident = args->protocol,
if (args->flags & RPC_CLNT_CREATE_NONPRIVPORT)
xprt->resvport = 0;
- clnt = rpc_new_client(args, xprt, NULL);
- if (IS_ERR(clnt))
- return clnt;
-
- if (!(args->flags & RPC_CLNT_CREATE_NOPING)) {
- int err = rpc_ping(clnt);
- if (err != 0) {
- rpc_shutdown_client(clnt);
- return ERR_PTR(err);
- }
- }
-
- clnt->cl_softrtry = 1;
- if (args->flags & RPC_CLNT_CREATE_HARDRTRY)
- clnt->cl_softrtry = 0;
-
- if (args->flags & RPC_CLNT_CREATE_AUTOBIND)
- clnt->cl_autobind = 1;
- if (args->flags & RPC_CLNT_CREATE_DISCRTRY)
- clnt->cl_discrtry = 1;
- if (!(args->flags & RPC_CLNT_CREATE_QUIET))
- clnt->cl_chatty = 1;
-
- return clnt;
+ return rpc_create_xprt(args, xprt);
}
EXPORT_SYMBOL_GPL(rpc_create);
if (RPC_ASSASSINATED(task))
return 0;
task->tk_action = call_start;
+ task->tk_status = 0;
if (task->tk_ops->rpc_call_prepare != NULL)
task->tk_action = rpc_prepare_task;
return 1;
if (RPC_ASSASSINATED(task))
return 0;
task->tk_action = call_start;
+ task->tk_status = 0;
return 1;
}
EXPORT_SYMBOL_GPL(rpc_restart_call);
case -EPROTONOSUPPORT:
dprintk("RPC: %5u remote rpcbind version unavailable, retrying\n",
task->tk_pid);
- task->tk_status = 0;
- task->tk_action = call_bind;
- return;
+ goto retry_timeout;
case -ECONNREFUSED: /* connection problems */
case -ECONNRESET:
case -ECONNABORTED:
return;
retry_timeout:
+ task->tk_status = 0;
task->tk_action = call_timeout;
}
trace_rpc_connect_status(task, status);
task->tk_status = 0;
switch (status) {
- /* if soft mounted, test if we've timed out */
- case -ETIMEDOUT:
- task->tk_action = call_timeout;
- return;
case -ECONNREFUSED:
case -ECONNRESET:
case -ECONNABORTED:
case -ENETUNREACH:
case -EHOSTUNREACH:
- /* retry with existing socket, after a delay */
- rpc_delay(task, 3*HZ);
if (RPC_IS_SOFTCONN(task))
break;
+ /* retry with existing socket, after a delay */
+ rpc_delay(task, 3*HZ);
case -EAGAIN:
- task->tk_action = call_bind;
+ /* Check for timeouts before looping back to call_bind */
+ case -ETIMEDOUT:
+ task->tk_action = call_timeout;
return;
case 0:
clnt->cl_stats->netreconn++;
case -EHOSTDOWN:
case -EHOSTUNREACH:
case -ENETUNREACH:
+ if (RPC_IS_SOFTCONN(task)) {
+ rpc_exit(task, status);
+ break;
+ }
/*
* Delay any retries for 3 seconds, then handle as if it
* were a timeout.
struct rpc_rqst *req = task->tk_rqstp;
struct rpc_xprt *xprt = req->rq_xprt;
struct sock_xprt *transport = container_of(xprt, struct sock_xprt, xprt);
+ struct sock *sk = transport->inet;
int ret = -EAGAIN;
dprintk("RPC: %5u xmit incomplete (%u left of %u)\n",
* window size
*/
set_bit(SOCK_NOSPACE, &transport->sock->flags);
- transport->inet->sk_write_pending++;
+ sk->sk_write_pending++;
/* ...and wait for more buffer space */
xprt_wait_for_buffer_space(task, xs_nospace_callback);
}
}
spin_unlock_bh(&xprt->transport_lock);
+
+ /* Race breaker in case memory is freed before above code is called */
+ sk->sk_write_space(sk);
return ret;
}
xs_tcp_shutdown(xprt);
}
+ static void xs_xprt_free(struct rpc_xprt *xprt)
+ {
+ xs_free_peer_addresses(xprt);
+ xprt_free(xprt);
+ }
+
/**
* xs_destroy - prepare to shutdown a transport
* @xprt: doomed transport
dprintk("RPC: xs_destroy xprt %p\n", xprt);
xs_close(xprt);
- xs_free_peer_addresses(xprt);
- xprt_free(xprt);
+ xs_xprt_free(xprt);
module_put(THIS_MODULE);
}
* If we're unable to obtain the rpc_rqst we schedule the closing of the
* connection and return -1.
*/
-static inline int xs_tcp_read_callback(struct rpc_xprt *xprt,
+static int xs_tcp_read_callback(struct rpc_xprt *xprt,
struct xdr_skb_reader *desc)
{
struct sock_xprt *transport =
container_of(xprt, struct sock_xprt, xprt);
struct rpc_rqst *req;
- req = xprt_alloc_bc_request(xprt);
+ /* Look up and lock the request corresponding to the given XID */
+ spin_lock(&xprt->transport_lock);
+ req = xprt_lookup_bc_request(xprt, transport->tcp_xid);
if (req == NULL) {
+ spin_unlock(&xprt->transport_lock);
printk(KERN_WARNING "Callback slot table overflowed\n");
xprt_force_disconnect(xprt);
return -1;
}
- req->rq_xid = transport->tcp_xid;
dprintk("RPC: read callback XID %08x\n", ntohl(req->rq_xid));
xs_tcp_read_common(xprt, desc, req);
- if (!(transport->tcp_flags & TCP_RCV_COPY_DATA)) {
- struct svc_serv *bc_serv = xprt->bc_serv;
-
- /*
- * Add callback request to callback list. The callback
- * service sleeps on the sv_cb_waitq waiting for new
- * requests. Wake it up after adding enqueing the
- * request.
- */
- dprintk("RPC: add callback request to list\n");
- spin_lock(&bc_serv->sv_cb_lock);
- list_add(&req->rq_bc_list, &bc_serv->sv_cb_list);
- spin_unlock(&bc_serv->sv_cb_lock);
- wake_up(&bc_serv->sv_cb_waitq);
- }
-
- req->rq_private_buf.len = transport->tcp_copied;
+ if (!(transport->tcp_flags & TCP_RCV_COPY_DATA))
+ xprt_complete_bc_request(req, transport->tcp_copied);
+ spin_unlock(&xprt->transport_lock);
return 0;
}
static void bc_destroy(struct rpc_xprt *xprt)
{
+ dprintk("RPC: bc_destroy xprt %p\n", xprt);
+
+ xs_xprt_free(xprt);
+ module_put(THIS_MODULE);
}
static struct rpc_xprt_ops xs_local_ops = {
return xprt;
ret = ERR_PTR(-EINVAL);
out_err:
- xprt_free(xprt);
+ xs_xprt_free(xprt);
return ret;
}
return xprt;
ret = ERR_PTR(-EINVAL);
out_err:
- xprt_free(xprt);
+ xs_xprt_free(xprt);
return ret;
}
xprt->address_strings[RPC_DISPLAY_ADDR],
xprt->address_strings[RPC_DISPLAY_PROTO]);
-
if (try_module_get(THIS_MODULE))
return xprt;
ret = ERR_PTR(-EINVAL);
out_err:
- xprt_free(xprt);
+ xs_xprt_free(xprt);
return ret;
}
struct svc_sock *bc_sock;
struct rpc_xprt *ret;
- if (args->bc_xprt->xpt_bc_xprt) {
- /*
- * This server connection already has a backchannel
- * transport; we can't create a new one, as we wouldn't
- * be able to match replies based on xid any more. So,
- * reuse the already-existing one:
- */
- return args->bc_xprt->xpt_bc_xprt;
- }
xprt = xs_setup_xprt(args, xprt_tcp_slot_table_entries,
xprt_tcp_slot_table_entries);
if (IS_ERR(xprt))
*/
xprt_set_connected(xprt);
-
if (try_module_get(THIS_MODULE))
return xprt;
+
+ args->bc_xprt->xpt_bc_xprt = NULL;
xprt_put(xprt);
ret = ERR_PTR(-EINVAL);
out_err:
- xprt_free(xprt);
+ xs_xprt_free(xprt);
return ret;
}
projects / platform / kernel / linux-arm64.git / commitdiff