block: remove all rcu head initializations

Remove all rcu head inits. We don't care about the RCU head state before passing
it to call_rcu() anyway. Only leave the "on_stack" variants so debugobjects can
keep track of objects on stack.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c
index 0f3eb70..b1472bc 100644 (file)
--- a/block/cfq-iosched.c
+++ b/block/cfq-iosched.c
@@ -3788,7 +3788,6 @@ static void *cfq_init_queue(struct request_queue *q)
         * second, in order to have larger depth for async operations.
         */
        cfqd->last_delayed_sync = jiffies - HZ;
-       INIT_RCU_HEAD(&cfqd->rcu);
        return cfqd;
 }
 

diff --git a/block/genhd.c b/block/genhd.c
index 154b5f8..59a2db6 100644 (file)
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -988,7 +988,6 @@ int disk_expand_part_tbl(struct gendisk *disk, int partno)
        if (!new_ptbl)
                return -ENOMEM;
 
-       INIT_RCU_HEAD(&new_ptbl->rcu_head);
        new_ptbl->len = target;
 
        for (i = 0; i < len; i++)