cifs: flush before set-info if we have writeable handles
Servers can defer destaging any data and updating the mtime until close(). This means that if we do a setinfo to modify the mtime while other handles are open for write the server may overwrite our setinfo timestamps when if flushes the file on close() of the writeable handle. To solve this we add an explicit flush when the mtime is about to be updated. This fixes "cp -p" to preserve mtime when copying a file onto an SMB2 share. CC: Stable <stable@vger.kernel.org> Signed-off-by: NRonnie Sahlberg <lsahlber@redhat.com> Reviewed-by: NPavel Shilovsky <pshilov@microsoft.com> Signed-off-by: NSteve French <stfrench@microsoft.com>
Showing
想要评论请 注册 或 登录