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    SubjectRe: [RFC][v8][PATCH 10/10]: Document clone3() syscall
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    On Tuesday 13 October 2009, Sukadev Bhattiprolu wrote:
    > +clone3(struct clone_struct * __user clone_args, pid_t * __user pids)
    > +
    > + In addition to doing everything that clone() system call does,
    > + the clone3() system call:
    > +
    > + - allows additional clone flags (all 32 bits in the flags
    > + parameter to clone() are in use)
    > +
    > + - allows user to specify a pid for the child process in its
    > + active and ancestor pid name spaces.

    Someone (sorry, can't find the old mail) pointed out last time that
    the 'pid_t *__user tidptr' argument needs to be an independent pointer,
    in order to allow the same use patterns with CLONE_CHILD_SETTID and
    CLONE_CHILD_CLEARTID that you can do with the current clone
    implementation.

    Moving that argument from clone_struct into the argument list would
    also make this a three-argument syscall, which solves the naming problem.

    Arnd <><


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