Messages in this thread | | | Subject | Re: [PATCH] mm: mempolicy: handle vma with unmovable pages mapped correctly in mbind | From | Yang Shi <> | Date | Wed, 19 Jun 2019 09:39:48 -0700 |
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On 6/19/19 1:18 AM, Vlastimil Babka wrote: > On 6/18/19 7:06 PM, Yang Shi wrote: >> The BUG_ON was removed by commit >> d44d363f65780f2ac2ec672164555af54896d40d ("mm: don't assume anonymous >> pages have SwapBacked flag") since 4.12. > Perhaps that commit should be sent to stable@ ? Although with > VM_BUG_ON() this is less critical than plain BUG_ON().
I don't think we have to. I agree it is less critical, VM_DEBUG should be not enabled for production environment.
And, it doesn't actually break anything since split_huge_page would just return error, and those unmovable pages are silently ignored by isolate.
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