- err = inode_setattr(inode, iattr);
- if (!err && (iattr->ia_valid & ATTR_MODE))
+
+ if ((iattr->ia_valid & ATTR_SIZE) &&
+ iattr->ia_size != i_size_read(inode)) {
+ err = vmtruncate(inode, iattr->ia_size);
+ if (unlikely(err))
+ goto out_err;
+ }
+
+ setattr_copy(inode, iattr);
+ mark_inode_dirty(inode);
+
+ if (iattr->ia_valid & ATTR_MODE) {