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    Subject[PATCH -mm 3/7] Freezer: Remove PF_NOFREEZE from rcutorture thread
    Date
    From: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

    Remove PF_NOFREEZE from the rcutorture thread, adding a try_to_freeze() call as
    required.

    Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
    Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
    Acked-by: Pavel Machek <pavel@ucw.cz>
    ---
    kernel/rcutorture.c | 3 ++-
    1 file changed, 2 insertions(+), 1 deletion(-)

    Index: linux-2.6.20-mm2/kernel/rcutorture.c
    ===================================================================
    --- linux-2.6.20-mm2.orig/kernel/rcutorture.c 2007-02-25 12:07:15.000000000 +0100
    +++ linux-2.6.20-mm2/kernel/rcutorture.c 2007-02-25 12:49:23.000000000 +0100
    @@ -46,6 +46,7 @@
    #include <linux/byteorder/swabb.h>
    #include <linux/stat.h>
    #include <linux/srcu.h>
    +#include <linux/freezer.h>

    MODULE_LICENSE("GPL");
    MODULE_AUTHOR("Paul E. McKenney <paulmck@us.ibm.com> and "
    @@ -585,7 +586,6 @@ rcu_torture_writer(void *arg)

    VERBOSE_PRINTK_STRING("rcu_torture_writer task started");
    set_user_nice(current, 19);
    - current->flags |= PF_NOFREEZE;

    do {
    schedule_timeout_uninterruptible(1);
    @@ -607,6 +607,7 @@ rcu_torture_writer(void *arg)
    }
    rcu_torture_current_version++;
    oldbatch = cur_ops->completed();
    + try_to_freeze();
    } while (!kthread_should_stop() && !fullstop);
    VERBOSE_PRINTK_STRING("rcu_torture_writer task stopping");
    while (!kthread_should_stop())
    -
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