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SubjectRe: hmm_range_fault related fixes and legacy API removal v2

On 7/22/19 2:44 AM, Christoph Hellwig wrote:
> Hi Jérôme, Ben and Jason,
> below is a series against the hmm tree which fixes up the mmap_sem
> locking in nouveau and while at it also removes leftover legacy HMM APIs
> only used by nouveau.
> The first 4 patches are a bug fix for nouveau, which I suspect should
> go into this merge window even if the code is marked as staging, just
> to avoid people copying the breakage.
> Changes since v1:
> - don't return the valid state from hmm_range_unregister
> - additional nouveau cleanups

I ran some OpenCL tests from Jerome with nouveau and this series,
5.3.0-rc1, and my two HMM fixes:
("mm/hmm: fix ZONE_DEVICE anon page mapping reuse")
("mm/hmm: Fix bad subpage pointer in try_to_unmap_one")

You can add for the series:
Tested-by: Ralph Campbell <>

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