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    Subject[PATCH tip/core/rcu 32/40] srcu: Fix bogus try_check_zero() comment
    Date
    Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
    ---
    kernel/rcu/srcu.c | 7 +++----
    1 file changed, 3 insertions(+), 4 deletions(-)

    diff --git a/kernel/rcu/srcu.c b/kernel/rcu/srcu.c
    index d51ab050f777..5aeeaecfb673 100644
    --- a/kernel/rcu/srcu.c
    +++ b/kernel/rcu/srcu.c
    @@ -254,10 +254,9 @@ static void srcu_gp_start(struct srcu_struct *sp)
    }

    /*
    - * @@@ Wait until all pre-existing readers complete. Such readers
    - * will have used the index specified by "idx".
    - * the caller should ensures the ->completed is not changed while checking
    - * and idx = (->completed & 1) ^ 1
    + * Wait until all readers counted by array index idx complete, but loop
    + * a maximum of trycount times. The caller must ensure that ->completed
    + * is not changed while checking.
    */
    static bool try_check_zero(struct srcu_struct *sp, int idx, int trycount)
    {
    --
    2.5.2
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