Merge branch 'for-3.2/core' of git://git.kernel.dk/linux-block

* 'for-3.2/core' of git://git.kernel.dk/linux-block: (29 commits)
  block: don't call blk_drain_queue() if elevator is not up
  blk-throttle: use queue_is_locked() instead of lockdep_is_held()
  blk-throttle: Take blkcg->lock while traversing blkcg->policy_list
  blk-throttle: Free up policy node associated with deleted rule
  block: warn if tag is greater than real_max_depth.
  block: make gendisk hold a reference to its queue
  blk-flush: move the queue kick into
  blk-flush: fix invalid BUG_ON in blk_insert_flush
  block: Remove the control of complete cpu from bio.
  block: fix a typo in the blk-cgroup.h file
  block: initialize the bounce pool if high memory may be added later
  block: fix request_queue lifetime handling by making blk_queue_cleanup() properly shutdown
  block: drop @tsk from attempt_plug_merge() and explain sync rules
  block: make get_request[_wait]() fail if queue is dead
  block: reorganize throtl_get_tg() and blk_throtl_bio()
  block: reorganize queue draining
  block: drop unnecessary blk_get/put_queue() in scsi_cmd_ioctl() and blk_get_tg()
  block: pass around REQ_* flags instead of broken down booleans during request alloc/free
  block: move blk_throtl prototypes to block/blk.h
  block: fix genhd refcounting in blkio_policy_parse_and_set()
  ...

Fix up trivial conflicts due to "mddev_t" -> "struct mddev" conversion
and making the request functions be of type "void" instead of "int" in
 - drivers/md/{faulty.c,linear.c,md.c,md.h,multipath.c,raid0.c,raid1.c,raid10.c,raid5.c}
 - drivers/staging/zram/zram_drv.c

1 files changed, 8 insertions, 0 deletions

diff --git a/block/genhd.c b/block/genhd.c
index 94855a9717de..024fc3944fb5 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -612,6 +612,12 @@ void add_disk(struct gendisk *disk)
         register_disk(disk);
         blk_register_queue(disk);
 
+        /*
+         * Take an extra ref on queue which will be put on disk_release()
+         * so that it sticks around as long as @disk is there.
+         */
+        WARN_ON_ONCE(blk_get_queue(disk->queue));
+
         retval = sysfs_create_link(&disk_to_dev(disk)->kobj, &bdi->dev->kobj,
                                    "bdi");
         WARN_ON(retval);
@@ -1166,6 +1172,8 @@ static void disk_release(struct device *dev)
         disk_replace_part_tbl(disk, NULL);
         free_part_stats(&disk->part0);
         free_part_info(&disk->part0);
+        if (disk->queue)
+                blk_put_queue(disk->queue);
         kfree(disk);
 }
 struct class block_class = {