Use a single loop instead of two loops to determine whether or not
all_blk_mq has to be set.
Signed-off-by: Bart Van Assche <bart.vanassche@xxxxxxxxxxx>
---
drivers/md/dm-table.c | 21 ++++++++-------------
1 file changed, 8 insertions(+), 13 deletions(-)
diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c
index 49893fdc..991d514 100644
--- a/drivers/md/dm-table.c
+++ b/drivers/md/dm-table.c
@@ -871,7 +871,7 @@ static int dm_table_determine_type(struct dm_table *t)
{
unsigned i;
unsigned bio_based = 0, request_based = 0, hybrid = 0;
- bool verify_blk_mq = false;
+ unsigned sq_count = 0, mq_count = 0;
struct dm_target *tgt;
struct dm_dev_internal *dd;
struct list_head *devices = dm_table_get_devices(t);
@@ -959,20 +959,15 @@ static int dm_table_determine_type(struct dm_table *t)
}
if (q->mq_ops)
- verify_blk_mq = true;
+ mq_count++;
+ else
+ sq_count++;
}
-
- if (verify_blk_mq) {
- /* verify _all_ devices in the table are blk-mq devices */
- list_for_each_entry(dd, devices, list)
- if (!bdev_get_queue(dd->dm_dev->bdev)->mq_ops) {
- DMERR("table load rejected: not all devices"
- " are blk-mq request-stackable");
- return -EINVAL;
- }
-
- t->all_blk_mq = true;
+ if (sq_count && mq_count) {
+ DMERR("table load rejected: not all devices are blk-mq request-stackable");
+ return -EINVAL;
}
+ t->all_blk_mq = mq_count > 0;
return 0;
}
--
2.10.1
--
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