Messages in this thread | | | Date | Tue, 12 Sep 2017 13:58:35 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH] mm, hugetlb, soft_offline: save compound page order before page migration |
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On Tue, 12 Sep 2017 13:54:48 -0700 Andrew Morton <akpm@linux-foundation.org> wrote:
> On Tue, 12 Sep 2017 22:43:06 +0200 Alexandru Moise <00moses.alexander00@gmail.com> wrote: > > > This fixes a bug in madvise() where if you'd try to soft offline a > > hugepage via madvise(), while walking the address range you'd end up, > > using the wrong page offset due to attempting to get the compound > > order of a former but presently not compound page, due to dissolving > > the huge page (since c3114a8). > > What are the user visible effects of the bug? The wrong page is > offlined? No offlining occurs?
This also affects MADV_HWPOISON?
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