Date: Tue, 18 Oct 2016 21:40:11 +1100
From: Nicholas Piggin <npiggin@gmail.com>
To: Christoph Hellwig <hch@lst.de>
Cc: akpm@linux-foundation.org, joelaf@google.com, jszhang@marvell.com,
        chris@chris-wilson.co.uk, joaodias@google.com, linux-mm@kvack.org,
        linux-rt-users@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [RFC] reduce latency in __purge_vmap_area_lazy
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On Tue, 18 Oct 2016 08:56:05 +0200
Christoph Hellwig <hch@lst.de> 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 seems pretty good to me.

Thanks,
Nick