* [RFC] reduce latency in __purge_vmap_area_lazy
[not found] <1476773771-11470-1-git-send-email-hch@lst.de>
@ 2016-10-18 11:21 ` Jisheng Zhang
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From: Jisheng Zhang @ 2016-10-18 11:21 UTC (permalink / raw)
To: linux-arm-kernel
On Tue, 18 Oct 2016 08:56:05 +0200 Christoph Hellwig 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.
I just tested this series, the preempt off ftrace log doesn't complain
__purge_vmap_area_lazy any more in my test case, this latency is removed!
So feel free to add
Tested-by: Jisheng Zhang <jszhang@marvell.com>
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2016-10-18 11:21 ` [RFC] reduce latency in __purge_vmap_area_lazy Jisheng Zhang
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