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-rw-r--r--block/blk-tag.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/block/blk-tag.c b/block/blk-tag.c
index 32667beb03e..ed5166fbc59 100644
--- a/block/blk-tag.c
+++ b/block/blk-tag.c
@@ -38,7 +38,8 @@ static int __blk_free_tags(struct blk_queue_tag *bqt)
retval = atomic_dec_and_test(&bqt->refcnt);
if (retval) {
- BUG_ON(bqt->busy);
+ BUG_ON(find_first_bit(bqt->tag_map, bqt->max_depth) <
+ bqt->max_depth);
kfree(bqt->tag_index);
bqt->tag_index = NULL;
@@ -147,7 +148,6 @@ static struct blk_queue_tag *__blk_queue_init_tags(struct request_queue *q,
if (init_tag_map(q, tags, depth))
goto fail;
- tags->busy = 0;
atomic_set(&tags->refcnt, 1);
return tags;
fail:
@@ -313,7 +313,6 @@ void blk_queue_end_tag(struct request_queue *q, struct request *rq)
* unlock memory barrier semantics.
*/
clear_bit_unlock(tag, bqt->tag_map);
- bqt->busy--;
}
EXPORT_SYMBOL(blk_queue_end_tag);
@@ -368,7 +367,6 @@ int blk_queue_start_tag(struct request_queue *q, struct request *rq)
bqt->tag_index[tag] = rq;
blkdev_dequeue_request(rq);
list_add(&rq->queuelist, &q->tag_busy_list);
- bqt->busy++;
return 0;
}
EXPORT_SYMBOL(blk_queue_start_tag);