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    SubjectRe: [PATCH] mm: sync rss-counters at the end of exit_mm()
    KAMEZAWA Hiroyuki wrote:
    > (2012/04/10 5:03), Konstantin Khlebnikov wrote:
    >
    >> On task's exit do_exit() calls sync_mm_rss() but this is not enough,
    >> there can be page-faults after this point, for example exit_mm() ->
    >> mm_release() -> put_user() (for processing tsk->clear_child_tid).
    >> Thus there may be some rss-counters delta in current->rss_stat.

    I had to mention it in comment:

    This should fix warnings:
    BUG: Bad rss-counter state mm:ffff88020813c380 idx:1 val:-1
    BUG: Bad rss-counter state mm:ffff88020813c380 idx:2 val:1

    >>
    >> Signed-off-by: Konstantin Khlebnikov<khlebnikov@openvz.org>
    >> Reported-by: Markus Trippelsdorf<markus@trippelsdorf.de>
    >> Cc: Hugh Dickins<hughd@google.com>
    >> Cc: KAMEZAWA Hiroyuki<kamezawa.hiroyu@jp.fujitsu.com>
    >
    > Reviewed-by: KAMEZAWA Hiroyuki<kamezawa.hiroyu@jp.fujitsu.com>
    >
    > Does this fix recent issue reported ?
    >

    I hope so.


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