From: gregkh@xxxxxxxxxxxxxxxxxxx Sent: October 30, 2018 at 4:51:19 PM GMT > To: Nadav Amit <namit@xxxxxxxxxx> > Cc: Arnd Bergmann <arnd@xxxxxxxx>, Xavier Deguillard <xdeguillard@xxxxxxxxxx>, LKML <linux-kernel@xxxxxxxxxxxxxxx>, Michael S. Tsirkin <mst@xxxxxxxxxx>, Jason Wang <jasowang@xxxxxxxxxx>, linux-mm@xxxxxxxxx <linux-mm@xxxxxxxxx>, virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx <virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx> > Subject: Re: [PATCH v3 00/20] vmw_balloon: compaction, shrinker, 64-bit, etc. > > > On Tue, Oct 30, 2018 at 04:32:22PM +0000, Nadav Amit wrote: >> From: Nadav Amit >> Sent: September 26, 2018 at 7:13:16 PM GMT >>> To: Arnd Bergmann <arnd@xxxxxxxx>, gregkh@xxxxxxxxxxxxxxxxxxx >>> Cc: Xavier Deguillard <xdeguillard@xxxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx>, Nadav Amit <namit@xxxxxxxxxx>, Michael S. Tsirkin <mst@xxxxxxxxxx>, Jason Wang <jasowang@xxxxxxxxxx>, linux-mm@xxxxxxxxx>, virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx >>> 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? > > I have no idea, that was a few thousand patches reviewed ago... > > Did I not say anything about this when I applied them? > > greg k-h You regarded the magic-number in v2, which I fixed for v3. Should I resend?
