Re: [PATCH 2/2] virtio_balloon: fix race between migration and ballooning

On Sun, Jan 10, 2016 at 11:40:17PM +0200, Michael S. Tsirkin wrote:

On Mon, Jan 04, 2016 at 09:27:47AM +0900, Minchan Kim wrote:

quoted

quoted

I think this will cause deadlocks.

pages_lock now nests within page lock, balloon_page_putback
nests them in the reverse order.

In balloon_page_dequeu, we used trylock so I don't think it's
deadlock.

I went over this again and I don't see the issue anymore.
I think I was mistaken, so I dropped my patch and picked
up yours. Sorry about the noise.

No problem. Thanks for the review.