Messages in this thread | | | Date | Tue, 18 Oct 2016 19:21:49 +0800 | From | Jisheng Zhang <> | 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 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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