From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <stable-owner@vger.kernel.org>
Received: from mail.linuxfoundation.org ([140.211.169.12]:57190 "EHLO
        mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
        with ESMTP id S1750738AbdIEGWm (ORCPT
        <rfc822;stable@vger.kernel.org>); Tue, 5 Sep 2017 02:22:42 -0400
Date: Tue, 5 Sep 2017 08:22:43 +0200
From: Greg KH <gregkh@linuxfoundation.org>
To: Stephan =?iso-8859-1?Q?M=FCller?= <smueller@chronox.de>
Cc: herbert@gondor.apana.org.au, stable@vger.kernel.org,
        stable-commits@vger.kernel.org
Subject: Re: [PATCH v5] crypto: only call put_page on referenced and used
 pages
Message-ID: <20170905062243.GA15083@kroah.com>
References: <150451824677121@kroah.com>
 <20170904102747.GA30155@kroah.com>
 <4873667.m4DXuR1bCz@positron.chronox.de>
MIME-Version: 1.0
Content-Type: text/plain; charset=iso-8859-1
Content-Disposition: inline
Content-Transfer-Encoding: 8bit
In-Reply-To: <4873667.m4DXuR1bCz@positron.chronox.de>
Sender: stable-owner@vger.kernel.org
List-ID: <stable.vger.kernel.org>

On Mon, Sep 04, 2017 at 11:17:33PM +0200, Stephan M�ller wrote:
> Hi Greg,
> 
> > Nope, this broke the build, sorry.  If you want it in 4.4-stable, please
> > provide a backported patch.
> 
> 
> The issue is the missing page_ref_count function which used to be
> atomic_read(&page->_count).
> 
> I am not fully sure how to properly provide a patch for old kernels. Below
> is a manually created patch that compiles and has the same logic. Please
> let me know if that patch is not suitable.

That works great, thanks.

> Note, this patch is only for 4.4 and earlier.

This doesn't apply to 3.18-stable, is it needed there?

thanks,

greg k-h