We neither assign congested_fn for requested-based blk-mq device
nor implement it correctly. So fix both.
Fixes: 4aa9c692e052 ("bdi: separate out congested state into a separate struct")
Signed-off-by: Hou Tao <[email protected]>
---
drivers/md/dm.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index b89f07ee2eff..80b95e21db43 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -1784,11 +1784,13 @@ static int dm_any_congested(void *congested_data, int
bdi_bits)
if (!test_bit(DMF_BLOCK_IO_FOR_SUSPEND, &md->flags)) {
if (dm_request_based(md)) {
+ struct backing_dev_info *bdi =
+ md->queue->backing_dev_info;
/*
* With request-based DM we only need to check the
* top-level queue for congestion.
*/
- r = md->queue->backing_dev_info->wb.state & bdi_bits;
+ r = bdi->wb.congested->state & bdi_bits;
} else {
map = dm_get_live_table_fast(md);
if (map)
@@ -2265,6 +2267,7 @@ int dm_setup_md_queue(struct mapped_device *md, struct
dm_table *t)
DMERR("Cannot initialize queue for request-based dm-mq
mapped device");
return r;
}
+ dm_init_normal_md_queue(md);
break;
case DM_TYPE_BIO_BASED:
case DM_TYPE_DAX_BIO_BASED:
--
2.25.0.4.g0ad7144999
--
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