[PATCH 4.4 14/66] md/raid5: release/flush io in raid5_do_work()

4.4-stable review patch. If anyone has any objections, please let me know. -- From: Song Liu commit 9c72a18e46ebe0f09484cce8ebf847abdab58498 upstream. In raid5, there are scenarios where some ios are deferred to a later time, and some IO need a flush to

[PATCH 4.4 14/66] md/raid5: release/flush io in raid5_do_work()

4.4-stable review patch. If anyone has any objections, please let me know. -- From: Song Liu commit 9c72a18e46ebe0f09484cce8ebf847abdab58498 upstream. In raid5, there are scenarios where some ios are deferred to a later time, and some IO need a flush to complete. To make sure