Messages in this thread | | | Date | Thu, 19 Jun 2008 22:18:24 -0500 | From | Jon Tollefson <> | Subject | Re: 2.6.26-rc5-mm3: BUG large value for HugePages_Rsvd |
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Andy Whitcroft wrote: > On Thu, Jun 19, 2008 at 11:27:47AM -0500, Jon Tollefson wrote: > >> After running some of the libhugetlbfs tests the value for >> /proc/meminfo/HugePages_Rsvd becomes really large. It looks like it has >> wrapped backwards from zero. >> Below is the sequence I used to run one of the tests that causes this; >> the tests passes for what it is intended to test but leaves a large >> value for reserved pages and that seemed strange to me. >> test run on ppc64 with 16M huge pages >> > > Yes Adam reported that here yesterday, he found it in his hugetlfs testing. > I have done some investigation on it and it is being triggered by a bug in > the private reservation tracking patches. It is triggered by the hugetlb > test which causes some complex vma splits to occur on a private mapping. > sorry I missed that
> I believe I have the underlying problem nailed and do have some nearly > complete patches for this and they should be in a postable state by > tommorrow. > Cool. > -apw > Jon
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