9pnet: trans_fd : allocate struct p9_trans_fd and struct p9_conn together.
There is no point in allocating these structs separately.
Changing this makes the code a little simpler and saves a few bytes of
memory.
Reported-by: Herve Vico
Signed-off-by: Simon Derr <simon.derr@bull.net>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
diff --git a/net/9p/trans_fd.c b/net/9p/trans_fd.c
index 9c80642..80d08f6 100644
--- a/net/9p/trans_fd.c
+++ b/net/9p/trans_fd.c
@@ -66,20 +66,6 @@
int privport;
};
-/**
- * struct p9_trans_fd - transport state
- * @rd: reference to file to read from
- * @wr: reference of file to write to
- * @conn: connection state reference
- *
- */
-
-struct p9_trans_fd {
- struct file *rd;
- struct file *wr;
- struct p9_conn *conn;
-};
-
/*
* Option Parsing (code inspired by NFS code)
* - a little lazy - parse all fd-transport options
@@ -159,6 +145,20 @@
unsigned long wsched;
};
+/**
+ * struct p9_trans_fd - transport state
+ * @rd: reference to file to read from
+ * @wr: reference of file to write to
+ * @conn: connection state reference
+ *
+ */
+
+struct p9_trans_fd {
+ struct file *rd;
+ struct file *wr;
+ struct p9_conn conn;
+};
+
static void p9_poll_workfn(struct work_struct *work);
static DEFINE_SPINLOCK(p9_poll_lock);
@@ -569,21 +569,19 @@
}
/**
- * p9_conn_create - allocate and initialize the per-session mux data
+ * p9_conn_create - initialize the per-session mux data
* @client: client instance
*
* Note: Creates the polling task if this is the first session.
*/
-static struct p9_conn *p9_conn_create(struct p9_client *client)
+static void p9_conn_create(struct p9_client *client)
{
int n;
- struct p9_conn *m;
+ struct p9_trans_fd *ts = client->trans;
+ struct p9_conn *m = &ts->conn;
p9_debug(P9_DEBUG_TRANS, "client %p msize %d\n", client, client->msize);
- m = kzalloc(sizeof(struct p9_conn), GFP_KERNEL);
- if (!m)
- return ERR_PTR(-ENOMEM);
INIT_LIST_HEAD(&m->mux_list);
m->client = client;
@@ -605,8 +603,6 @@
p9_debug(P9_DEBUG_TRANS, "mux %p can write\n", m);
set_bit(Wpending, &m->wsched);
}
-
- return m;
}
/**
@@ -665,7 +661,7 @@
{
int n;
struct p9_trans_fd *ts = client->trans;
- struct p9_conn *m = ts->conn;
+ struct p9_conn *m = &ts->conn;
p9_debug(P9_DEBUG_TRANS, "mux %p task %p tcall %p id %d\n",
m, current, req->tc, req->tc->id);
@@ -788,7 +784,7 @@
static int p9_fd_open(struct p9_client *client, int rfd, int wfd)
{
- struct p9_trans_fd *ts = kmalloc(sizeof(struct p9_trans_fd),
+ struct p9_trans_fd *ts = kzalloc(sizeof(struct p9_trans_fd),
GFP_KERNEL);
if (!ts)
return -ENOMEM;
@@ -814,9 +810,8 @@
{
struct p9_trans_fd *p;
struct file *file;
- int ret;
- p = kmalloc(sizeof(struct p9_trans_fd), GFP_KERNEL);
+ p = kzalloc(sizeof(struct p9_trans_fd), GFP_KERNEL);
if (!p)
return -ENOMEM;
@@ -837,20 +832,12 @@
p->rd->f_flags |= O_NONBLOCK;
- p->conn = p9_conn_create(client);
- if (IS_ERR(p->conn)) {
- ret = PTR_ERR(p->conn);
- p->conn = NULL;
- kfree(p);
- sockfd_put(csocket);
- sockfd_put(csocket);
- return ret;
- }
+ p9_conn_create(client);
return 0;
}
/**
- * p9_mux_destroy - cancels all pending requests and frees mux resources
+ * p9_mux_destroy - cancels all pending requests of mux
* @m: mux to destroy
*
*/
@@ -867,7 +854,6 @@
p9_conn_cancel(m, -ECONNRESET);
m->client = NULL;
- kfree(m);
}
/**
@@ -889,7 +875,7 @@
client->status = Disconnected;
- p9_conn_destroy(ts->conn);
+ p9_conn_destroy(&ts->conn);
if (ts->rd)
fput(ts->rd);
@@ -1041,14 +1027,7 @@
return err;
p = (struct p9_trans_fd *) client->trans;
- p->conn = p9_conn_create(client);
- if (IS_ERR(p->conn)) {
- err = PTR_ERR(p->conn);
- p->conn = NULL;
- fput(p->rd);
- fput(p->wr);
- return err;
- }
+ p9_conn_create(client);
return 0;
}