Merge branch 'tracing/urgent' into tracing/core

Merge reason: pick up both v2.6.30-rc1 [which includes tracing/urgent fixes]
              and pick up the current lineup of tracing/urgent fixes as well

Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 4 insertions, 0 deletions

diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c
index 3ff9bba3379a..73f36beff5cd 100644
--- a/block/blk-sysfs.c
+++ b/block/blk-sysfs.c
@@ -209,10 +209,14 @@ static ssize_t queue_iostats_store(struct request_queue *q, const char *page,
         ssize_t ret = queue_var_store(&stats, page, count);
 
         spin_lock_irq(q->queue_lock);
+        elv_quisce_start(q);
+
         if (stats)
                 queue_flag_set(QUEUE_FLAG_IO_STAT, q);
         else
                 queue_flag_clear(QUEUE_FLAG_IO_STAT, q);
+
+        elv_quisce_end(q);
         spin_unlock_irq(q->queue_lock);
 
         return ret;