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    SubjectRe: [patch 3/3] [PATCH] prctl: Add PR_SET_MM codes to set up mm_struct entires v3
    Hi

    > When we restore a task we need to set up text, data and data
    > heap sizes from userspace to the values a task had at
    > checkpoint time. This patch adds auxilary prctl codes for that.
    >
    > While most of them have a statistical nature (their values
    > are involved into calculation of /proc/<pid>/statm output)
    > the start_brk and brk values are used to compute an allowed
    > size of program data segment expansion. Which means an arbitrary
    > changes of this values might be dangerous operation. So to restrict
    > access the following requirements applied to prctl calls:
    >
    > - The process has to have CAP_SYS_ADMIN capability granted.

    This is very dangerous feature and useless from regular admins.
    Moreover, CAP_SYS_ADMIN has a pretty overweight meanings and
    we can't disable it on practical. So, I have a question. Why
    don't you make new capability for checkpoint?



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