dlm: use kernel_sendpage

Using kernel_sendpage() is cleaner and safer than following
sock->ops ourselves.

Signed-off-by: Paolo Bonzini <bonzini@gnu.org>
Signed-off-by: David Teigland <teigland@redhat.com>

diff --git a/fs/dlm/lowcomms.c b/fs/dlm/lowcomms.c
index bda690c..240cef1 100644 (file)
--- a/fs/dlm/lowcomms.c
+++ b/fs/dlm/lowcomms.c
@@ -1285,7 +1285,6 @@ out:
 static void send_to_sock(struct connection *con)
 {
        int ret = 0;
-       ssize_t(*sendpage) (struct socket *, struct page *, int, size_t, int);
        const int msg_flags = MSG_DONTWAIT | MSG_NOSIGNAL;
        struct writequeue_entry *e;
        int len, offset;
@@ -1294,8 +1293,6 @@ static void send_to_sock(struct connection *con)
        if (con->sock == NULL)
                goto out_connect;
 
-       sendpage = con->sock->ops->sendpage;
-
        spin_lock(&con->writequeue_lock);
        for (;;) {
                e = list_entry(con->writequeue.next, struct writequeue_entry,
@@ -1310,8 +1307,8 @@ static void send_to_sock(struct connection *con)
 
                ret = 0;
                if (len) {
-                       ret = sendpage(con->sock, e->page, offset, len,
-                                      msg_flags);
+                       ret = kernel_sendpage(con->sock, e->page, offset, len,
+                                             msg_flags);
                        if (ret == -EAGAIN || ret == 0) {
                                cond_resched();
                                goto out;