Messages in this thread | ![/](/images/icornerl.gif) | | From | "Chen, Kenneth W" <> | Subject | RE: 2.6.16 hugetlbfs problem | Date | Wed, 22 Mar 2006 21:43:58 -0800 |
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Mark Rustad wrote on Wednesday, March 22, 2006 3:33 PM > >> I seem to be having trouble using hugetlbfs with kernel 2.6.16. I > >> have a small test program that worked with 2.6.16-rc5, but fails with > >> 2.6.16-rc6 or the release. The program is below. Given a path to a > >> file on a hugetlbfs, it opens/creates the file, mmaps it and tries to > >> access the first word. On 2.6.16-rc5, it works. On 2.6.16, it hangs > >> page-faulting until it is killed. > > > > On what platform? Things like hugetlb and address space layout > > (you're requesting a specific mmap() address I noticed) are very > > platform specific. > > This is on a Xeon, without PAE with the 1GB no-highmem memory map, in > all three cases. This is a 32-bit kernel running on a Nacona CPU. I > also had an unmap call over the range to be mmap-ed, but the failure/ > success cases were the same, so I removed it to reduce the test > program further.
It might be something else happening in your environment. I ran your test code on a similar system. It ran just fine.
- Ken
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