Messages in this thread | | | Date | Mon, 23 Jun 2008 11:04:04 -0500 | From | Jon Tollefson <> | Subject | Re: [RFC] hugetlb reservations -- MAP_PRIVATE fixes for split vmas |
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Andy Whitcroft wrote: > As reported by Adam Litke and Jon Tollefson one of the libhugetlbfs > regression tests triggers a negative overall reservation count. When > this occurs where there is no dynamic pool enabled tests will fail. > > Following this email are two patches to fix this issue: > > hugetlb reservations: move region tracking earlier -- simply moves the > region tracking code earlier so we do not have to supply prototypes, and > > hugetlb reservations: fix hugetlb MAP_PRIVATE reservations across vma > splits -- which moves us to tracking the consumed reservation so that > we can correctly calculate the remaining reservations at vma close time. > > This stack is against the top of v2.6.25-rc6-mm3, should this solution > prove acceptable it would probabally need porting below Nicks multiple > hugepage size patches and those updated; if so I would be happy to do > that too. > > Jon could you have a test on this and see if it works out for you. > > -apw > Looking good so far. I am not seeing any of the tests push the reservation number negative - with this patch set applied
Jon
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