From: Chengming Zhou <zhouchengming@xxxxxxxxxxxxx>
The only user of bt_for_each() is blk_mq_queue_tag_busy_iter(), which
need to filter queue when iterate the tags. In preparation of removing
bt_for_each(), support queue filter in bt_tags_iter().
Reviewed-by: Bart Van Assche <bvanassche@xxxxxxx>
Signed-off-by: Chengming Zhou <zhouchengming@xxxxxxxxxxxxx>
---
block/blk-mq-tag.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/block/blk-mq-tag.c b/block/blk-mq-tag.c
index cc57e2dd9a0b..3cf3cf72cd54 100644
--- a/block/blk-mq-tag.c
+++ b/block/blk-mq-tag.c
@@ -329,6 +329,7 @@ struct bt_tags_iter_data {
busy_tag_iter_fn *fn;
void *data;
unsigned int flags;
+ struct request_queue *q;
};
#define BT_TAG_ITER_RESERVED (1 << 0)
@@ -357,9 +358,13 @@ static bool bt_tags_iter(struct sbitmap *bitmap, unsigned int bitnr, void *data)
if (!rq)
return true;
+ if (iter_data->q && iter_data->q != rq->q)
+ goto out;
+
if (!(iter_data->flags & BT_TAG_ITER_STARTED) ||
blk_mq_request_started(rq))
ret = iter_data->fn(rq, iter_data->data);
+out:
if (!iter_static_rqs)
blk_mq_put_rq_ref(rq);
return ret;
--
2.41.0
