src = buf->ops->map(pipe, buf, 1);
dst = kmap_atomic(page, KM_USER1);
memcpy(dst + offset, src + buf->offset, count);
- kunmap_atomic(page, KM_USER1);
+ kunmap_atomic(dst, KM_USER1);
buf->ops->unmap(pipe, buf, src);
copied = ocfs2_write_end(file, file->f_mapping, sd->pos, count, count,