[PATCH 4.4 007/193] blktrace: fix unlocked registration of tracepoints

4.4-stable review patch. If anyone has any objections, please let me know. -- From: Jens Axboe commit a6da0024ffc19e0d47712bb5ca4fd083f76b07df upstream. We need to ensure that tracepoints are registered and unregistered with the users of them. The existing

[PATCH 4.4 007/193] blktrace: fix unlocked registration of tracepoints

4.4-stable review patch. If anyone has any objections, please let me know. -- From: Jens Axboe commit a6da0024ffc19e0d47712bb5ca4fd083f76b07df upstream. We need to ensure that tracepoints are registered and unregistered with the users of them. The existing atomic count isn't