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    Subjectrunning get_user_pages() from kernel thread
    Hey,

    ksm is running from its kernel thread context get_user_pages(), but look
    like it isnt safe to do get_user_pages() from kernel thread:
    get_user_pages may lead into do_swap_page() that may lead into calling
    grab_swap_token()

    Now grab_swap_token() will do:
    current_interval = global_faults - current->mm->... (here is the bug...
    (kernel thread doesnt have mm strcture)

    So the question is: is this thing is by desgin? (that kernel thread cant
    call get_user_pages???), should i use something like switch_mm()??

    Thanks.




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