vhost: don't bother copying iovecs in handle_rx(), kill memcpy_toiovecend()

Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: kvm@vger.kernel.org
Cc: virtualization@lists.linux-foundation.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 0 insertions, 26 deletions

diff --git a/lib/iovec.c b/lib/iovec.c
index 4a90875c64ae..d8f17a9b1ccf 100644
--- a/lib/iovec.c
+++ b/lib/iovec.c
@@ -3,32 +3,6 @@
 #include <linux/uio.h>
 
 /*
- *      Copy kernel to iovec. Returns -EFAULT on error.
- */
-
-int memcpy_toiovecend(const struct iovec *iov, unsigned char *kdata,
-                      int offset, int len)
-{
-        int copy;
-        for (; len > 0; ++iov) {
-                /* Skip over the finished iovecs */
-                if (unlikely(offset >= iov->iov_len)) {
-                        offset -= iov->iov_len;
-                        continue;
-                }
-                copy = min_t(unsigned int, iov->iov_len - offset, len);
-                if (copy_to_user(iov->iov_base + offset, kdata, copy))
-                        return -EFAULT;
-                offset = 0;
-                kdata += copy;
-                len -= copy;
-        }
-
-        return 0;
-}
-EXPORT_SYMBOL(memcpy_toiovecend);
-
-/*
  *      Copy iovec to kernel. Returns -EFAULT on error.
  */