Messages in this thread | | | Date | Thu, 4 Aug 2016 12:16:01 +0300 | From | "Kirill A. Shutemov" <> | Subject | Re: A question about transparent hugepages |
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On Thu, Aug 04, 2016 at 12:02:29PM +0800, zhong jiang wrote: > according to the total_mapcount, Different process can map any subpages of the > transparent hugepages. How it can happen to ?
For anonymous memory it can only happen over copy-on-write via fork() + munmap() or something in one of the processes.
Now we have tmpfs/shmem with huge pages in mainline. In this case you can map any subpage directly from file.
-- Kirill A. Shutemov
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