Messages in this thread | | | Date | Wed, 04 Sep 2002 21:48:07 -0700 | From | Andrew Morton <> | Subject | Re: statm_pgd_range() sucks! |
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William Lee Irwin III wrote: > > On Thu, Aug 29, 2002 at 07:51:44PM -0700, Andrew Morton wrote: > > BTW, Rohit's hugetlb patch touches proc_pid_statm(), so a diff on -mm3 > > would be appreciated. > > I lost track of what the TODO's were but this is of relatively minor > import, and I lagged long enough this is against 2.5.33-mm2:
Well the TODO was to worry about the (very) incorrect reporting of mapping occupancy. mmap(1G file), touch one byte of it (or none) and the thing will report 1G?
We figured that per-vma rss accounting would be easy and would fix it, then we remembered that vma's can be split into two, which screwed that plan most royally.
Maybe when a VMA is split, we set the new VMA to have an rss of zero, and keep on doing the accounting. That way, the sum-of-vmas is still correct even though the individual ones are wildly wrong?? - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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