btrfs_ioctl_send(): don't bother with access_ok()

we do copy_from_user() on that range anyway

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

diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c
index c5f41bd..6a92ecf 100644 (file)
--- a/fs/btrfs/send.c
+++ b/fs/btrfs/send.c
@@ -7065,13 +7065,6 @@ long btrfs_ioctl_send(struct file *mnt_file, struct btrfs_ioctl_send_args *arg)
                goto out;
        }
 
-       if (!access_ok(arg->clone_sources,
-                       sizeof(*arg->clone_sources) *
-                       arg->clone_sources_count)) {
-               ret = -EFAULT;
-               goto out;
-       }
-
        if (arg->flags & ~BTRFS_SEND_FLAG_MASK) {
                ret = -EINVAL;
                goto out;