From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pg1-f197.google.com (mail-pg1-f197.google.com [209.85.215.197]) by kanga.kvack.org (Postfix) with ESMTP id 8A89A8E00A4 for ; Tue, 25 Sep 2018 14:16:46 -0400 (EDT) Received: by mail-pg1-f197.google.com with SMTP id 186-v6so10461418pgc.12 for ; Tue, 25 Sep 2018 11:16:46 -0700 (PDT) Received: from mail.linuxfoundation.org (mail.linuxfoundation.org. [140.211.169.12]) by mx.google.com with ESMTPS id m75-v6si3034742pga.481.2018.09.25.11.16.45 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 25 Sep 2018 11:16:45 -0700 (PDT) Date: Tue, 25 Sep 2018 20:15:48 +0200 From: Greg Kroah-Hartman Subject: Re: [PATCH v2 00/20] vmw_balloon: compaction, shrinker, 64-bit, etc. Message-ID: <20180925181548.GB25458@kroah.com> References: <20180920173026.141333-1-namit@vmware.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180920173026.141333-1-namit@vmware.com> Sender: owner-linux-mm@kvack.org List-ID: To: Nadav Amit Cc: Arnd Bergmann , linux-kernel@vger.kernel.org, Xavier Deguillard , "Michael S. Tsirkin" , Jason Wang , linux-mm@kvack.org, virtualization@lists.linux-foundation.org On Thu, Sep 20, 2018 at 10:30:06AM -0700, Nadav Amit wrote: > This patch-set adds the following enhancements to the VMware balloon > driver: > > 1. Balloon compaction support. > 2. Report the number of inflated/deflated ballooned pages through vmstat. > 3. Memory shrinker to avoid balloon over-inflation (and OOM). > 4. Support VMs with memory limit that is greater than 16TB. > 5. Faster and more aggressive inflation. > > To support compaction we wish to use the existing infrastructure. > However, we need to make slight adaptions for it. We add a new list > interface to balloon-compaction, which is more generic and efficient, > since it does not require as many IRQ save/restore operations. We leave > the old interface that is used by the virtio balloon. > > Big parts of this patch-set are cleanup and documentation. Patches 1-13 > simplify the balloon code, document its behavior and allow the balloon > code to run concurrently. The support for concurrency is required for > compaction and the shrinker interface. > > For documentation we use the kernel-doc format. We are aware that the > balloon interface is not public, but following the kernel-doc format may > be useful one day. I applied the first 16 patches. Please fix up 17 and resend. thanks, greg k-h