mm, madvise_inject_error: Disable MADV_SOFT_OFFLINE for ZONE_DEVICE pages
Given that dax / device-mapped pages are never subject to page allocations remove them from consideration by the soft-offline mechanism. Reported-by: NNaoya Horiguchi <n-horiguchi@ah.jp.nec.com> Signed-off-by: NDan Williams <dan.j.williams@intel.com> Acked-by: NNaoya Horiguchi <n-horiguchi@ah.jp.nec.com> Signed-off-by: NDave Jiang <dave.jiang@intel.com>
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