[SK_BUFF]: Introduce skb_copy_to_linear_data{_offset}

To clearly state the intent of copying to linear sk_buffs, _offset being a
overly long variant but interesting for the sake of saving some bytes.

Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>

1 files changed, 4 insertions, 3 deletions

diff --git a/net/tipc/msg.h b/net/tipc/msg.h
index 62d549063604..aec7ce7af875 100644
--- a/net/tipc/msg.h
+++ b/net/tipc/msg.h
@@ -786,15 +786,16 @@ static inline int msg_build(struct tipc_msg *hdr,
         *buf = buf_acquire(sz);
         if (!(*buf))
                 return -ENOMEM;
-        memcpy((*buf)->data, (unchar *)hdr, hsz);
+        skb_copy_to_linear_data(*buf, hdr, hsz);
         for (res = 1, cnt = 0; res && (cnt < num_sect); cnt++) {
                 if (likely(usrmem))
                         res = !copy_from_user((*buf)->data + pos,
                                               msg_sect[cnt].iov_base,
                                               msg_sect[cnt].iov_len);
                 else
-                        memcpy((*buf)->data + pos, msg_sect[cnt].iov_base,
-                               msg_sect[cnt].iov_len);
+                        skb_copy_to_linear_data_offset(*buf, pos,
+                                                       msg_sect[cnt].iov_base,
+                                                       msg_sect[cnt].iov_len);
                 pos += msg_sect[cnt].iov_len;
         }
         if (likely(res))