block: Add fallthrough markers to switch statements

[karo-tx-linux.git] / block / blk-tag.c

diff --git a/block/blk-tag.c b/block/blk-tag.c
index 07cc329fa4b0aa9f01fc32b4f56211df8dff7107..2290f65b9d736527c875a5169aff0b0db316b355 100644 (file)
--- a/block/blk-tag.c
+++ b/block/blk-tag.c
@@ -258,15 +258,14 @@ EXPORT_SYMBOL(blk_queue_resize_tags);
  *    all transfers have been done for a request. It's important to call
  *    this function before end_that_request_last(), as that will put the
  *    request back on the free list thus corrupting the internal tag list.
- *
- *  Notes:
- *   queue lock must be held.
  **/
 void blk_queue_end_tag(struct request_queue *q, struct request *rq)
 {
        struct blk_queue_tag *bqt = q->queue_tags;
        unsigned tag = rq->tag; /* negative tags invalid */
 
+       lockdep_assert_held(q->queue_lock);
+
        BUG_ON(tag >= bqt->real_max_depth);
 
        list_del_init(&rq->queuelist);
@@ -307,9 +306,6 @@ EXPORT_SYMBOL(blk_queue_end_tag);
  *    calling this function.  The request will also be removed from
  *    the request queue, so it's the drivers responsibility to readd
  *    it if it should need to be restarted for some reason.
- *
- *  Notes:
- *   queue lock must be held.
  **/
 int blk_queue_start_tag(struct request_queue *q, struct request *rq)
 {
@@ -317,6 +313,8 @@ int blk_queue_start_tag(struct request_queue *q, struct request *rq)
        unsigned max_depth;
        int tag;
 
+       lockdep_assert_held(q->queue_lock);
+
        if (unlikely((rq->rq_flags & RQF_QUEUED))) {
                printk(KERN_ERR
                       "%s: request %p for device [%s] already tagged %d",
@@ -389,14 +387,13 @@ EXPORT_SYMBOL(blk_queue_start_tag);
  *   Hardware conditions may dictate a need to stop all pending requests.
  *   In this case, we will safely clear the block side of the tag queue and
  *   readd all requests to the request queue in the right order.
- *
- *  Notes:
- *   queue lock must be held.
  **/
 void blk_queue_invalidate_tags(struct request_queue *q)
 {
        struct list_head *tmp, *n;
 
+       lockdep_assert_held(q->queue_lock);
+
        list_for_each_safe(tmp, n, &q->tag_busy_list)
                blk_requeue_request(q, list_entry_rq(tmp));
 }