[PATCH] dlm: use kern_recvmsg()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 6 insertions, 17 deletions

diff --git a/fs/dlm/lowcomms-tcp.c b/fs/dlm/lowcomms-tcp.c
index f1efd17b2614..07e0a122c32f 100644
--- a/fs/dlm/lowcomms-tcp.c
+++ b/fs/dlm/lowcomms-tcp.c
@@ -268,12 +268,12 @@ static void close_connection(struct connection *con, bool and_other)
 static int receive_from_sock(struct connection *con)
 {
         int ret = 0;
-        struct msghdr msg;
-        struct iovec iov[2];
-        mm_segment_t fs;
+        struct msghdr msg = {};
+        struct kvec iov[2];
         unsigned len;
         int r;
         int call_again_soon = 0;
+        int nvec;
 
         mutex_lock(&con->sock_mutex);
 
@@ -293,21 +293,13 @@ static int receive_from_sock(struct connection *con)
                 cbuf_init(&con->cb, PAGE_CACHE_SIZE);
         }
 
-        msg.msg_control = NULL;
-        msg.msg_controllen = 0;
-        msg.msg_iovlen = 1;
-        msg.msg_iov = iov;
-        msg.msg_name = NULL;
-        msg.msg_namelen = 0;
-        msg.msg_flags = 0;
-
         /*
          * iov[0] is the bit of the circular buffer between the current end
          * point (cb.base + cb.len) and the end of the buffer.
          */
         iov[0].iov_len = con->cb.base - cbuf_data(&con->cb);
         iov[0].iov_base = page_address(con->rx_page) + cbuf_data(&con->cb);
-        iov[1].iov_len = 0;
+        nvec = 1;
 
         /*
          * iov[1] is the bit of the circular buffer between the start of the
@@ -317,15 +309,12 @@ static int receive_from_sock(struct connection *con)
                 iov[0].iov_len = PAGE_CACHE_SIZE - cbuf_data(&con->cb);
                 iov[1].iov_len = con->cb.base;
                 iov[1].iov_base = page_address(con->rx_page);
-                msg.msg_iovlen = 2;
+                nvec = 2;
         }
         len = iov[0].iov_len + iov[1].iov_len;
 
-        fs = get_fs();
-        set_fs(get_ds());
-        r = ret = sock_recvmsg(con->sock, &msg, len,
+        r = ret = kernel_recvmsg(con->sock, &msg, iov, nvec, len,
                                MSG_DONTWAIT | MSG_NOSIGNAL);
-        set_fs(fs);
 
         if (ret <= 0)
                 goto out_close;