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    Subject[PATCH tip/core/rcu 80/86] md,rcu: convert call_rcu(free_conf) to kfree_rcu()
    Date
    From: Lai Jiangshan <laijs@cn.fujitsu.com>

    The rcu callback free_conf() just calls a kfree(),
    so we use kfree_rcu() instead of the call_rcu(free_conf).

    Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
    Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
    Cc: Neil Brown <neilb@suse.de>
    ---
    drivers/md/linear.c | 8 +-------
    1 files changed, 1 insertions(+), 7 deletions(-)

    diff --git a/drivers/md/linear.c b/drivers/md/linear.c
    index abfb59a..6cd2c31 100644
    --- a/drivers/md/linear.c
    +++ b/drivers/md/linear.c
    @@ -213,12 +213,6 @@ static int linear_run (mddev_t *mddev)
    return md_integrity_register(mddev);
    }

    -static void free_conf(struct rcu_head *head)
    -{
    - linear_conf_t *conf = container_of(head, linear_conf_t, rcu);
    - kfree(conf);
    -}
    -
    static int linear_add(mddev_t *mddev, mdk_rdev_t *rdev)
    {
    /* Adding a drive to a linear array allows the array to grow.
    @@ -247,7 +241,7 @@ static int linear_add(mddev_t *mddev, mdk_rdev_t *rdev)
    md_set_array_sectors(mddev, linear_size(mddev, 0, 0));
    set_capacity(mddev->gendisk, mddev->array_sectors);
    revalidate_disk(mddev->gendisk);
    - call_rcu(&oldconf->rcu, free_conf);
    + kfree_rcu(oldconf, rcu);
    return 0;
    }

    --
    1.7.3.2


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