Messages in this thread | | | Date | Tue, 21 Dec 2021 19:59:16 -0400 | From | Jason Gunthorpe <> | Subject | Re: [PATCH v1 06/11] mm: support GUP-triggered unsharing via FAULT_FLAG_UNSHARE (!hugetlb) |
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On Tue, Dec 21, 2021 at 06:40:30PM +0100, David Hildenbrand wrote:
> What adds complexity to correctly maintain the "exclusive" state are at > least: > * KSM (might be harder, have to think about it)
I know little about it, but isn't KSM like fork where it is trying to WP pages with the intention of copying them? Shouldn't KSM completely reject WP'ing a page that is under any kind of writable GUP?
Jason
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