Re: [PATCH v3 00/20] vmw_balloon: compaction, shrinker, 64-bit, etc.

[Nadav Amit <namit@vmware.com>]

From: Nadav Amit
Sent: September 26, 2018 at 7:13:16 PM GMT
> To: Arnd Bergmann <arnd@arndb.de>, gregkh@linuxfoundation.org
> Cc: Xavier Deguillard <xdeguillard@vmware.com>, linux-kernel@vger.kernel.org>, Nadav Amit <namit@vmware.com>, Michael S. Tsirkin <mst@redhat.com>, Jason Wang <jasowang@redhat.com>, linux-mm@kvack.org>, virtualization@lists.linux-foundation.org
> Subject: [PATCH v3 00/20] vmw_balloon: compaction, shrinker, 64-bit, etc.
> 
> 
> 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.
> 
> v2->v3: * Moving the balloon magic-number out of uapi (Greg)
> 
> v1->v2:	* Fix build error when THP is off (kbuild)
> 	* Fix build error on i386 (kbuild)
> 

Greg,

I realize you didn’t apply patches 17-20. Any reason for that?

Thanks,
Nadav