Re: [RFC] reduce latency in __purge_vmap_area_lazy

From: Joel Fernandes
Date: Thu Oct 20 2016 - 21:08:53 EST

On Mon, Oct 17, 2016 at 11:56 PM, Christoph Hellwig <hch@xxxxxx> wrote:
> Hi all,
> this is my spin at sorting out the long lock hold times in
> __purge_vmap_area_lazy. It is based on the patch from Joel sent this
> week. I don't have any good numbers for it, but it survived an
> xfstests run on XFS which is a significant vmalloc user. The
> changelogs could still be improved as well, but I'd rather get it
> out quickly for feedback and testing.

All patches look great to me, and thanks a lot.