1 files changed, 8 insertions, 1 deletions

diff --git a/fs/overlayfs/inode.c b/fs/overlayfs/inode.c
index 7c7092aaf9b4..e0bb217c01e2 100644
--- a/fs/overlayfs/inode.c
+++ b/fs/overlayfs/inode.c
@@ -19,6 +19,7 @@
 int ovl_setattr(struct dentry *dentry, struct iattr *attr)
 {
         int err;
+        bool full_copy_up = false;
         struct dentry *upperdentry;
         const struct cred *old_cred;
 
@@ -36,9 +37,15 @@ int ovl_setattr(struct dentry *dentry, struct iattr *attr)
                 err = -ETXTBSY;
                 if (atomic_read(&realinode->i_writecount) < 0)
                         goto out_drop_write;
+
+                /* Truncate should trigger data copy up as well */
+                full_copy_up = true;
         }
 
-        err = ovl_copy_up(dentry);
+        if (!full_copy_up)
+                err = ovl_copy_up(dentry);
+        else
+                err = ovl_copy_up_with_data(dentry);
         if (!err) {
                 struct inode *winode = NULL;