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-rw-r--r--drivers/md/dm-thin.c11
1 files changed, 1 insertions, 10 deletions
diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c
index 4d25d0e27031..eded4bcc4545 100644
--- a/drivers/md/dm-thin.c
+++ b/drivers/md/dm-thin.c
@@ -2802,13 +2802,6 @@ static void requeue_bios(struct pool *pool)
/*----------------------------------------------------------------
* Binding of control targets to a pool object
*--------------------------------------------------------------*/
-static bool data_dev_supports_discard(struct pool_c *pt)
-{
- struct request_queue *q = bdev_get_queue(pt->data_dev->bdev);
-
- return blk_queue_discard(q);
-}
-
static bool is_factor(sector_t block_size, uint32_t n)
{
return !sector_div(block_size, n);
@@ -2828,7 +2821,7 @@ static void disable_passdown_if_not_supported(struct pool_c *pt)
if (!pt->adjusted_pf.discard_passdown)
return;
- if (!data_dev_supports_discard(pt))
+ if (!bdev_max_discard_sectors(pt->data_dev->bdev))
reason = "discard unsupported";
else if (data_limits->max_discard_sectors < pool->sectors_per_block)
@@ -4057,8 +4050,6 @@ static void pool_io_hints(struct dm_target *ti, struct queue_limits *limits)
/*
* Must explicitly disallow stacking discard limits otherwise the
* block layer will stack them if pool's data device has support.
- * QUEUE_FLAG_DISCARD wouldn't be set but there is no way for the
- * user to see that, so make sure to set all discard limits to 0.
*/
limits->discard_granularity = 0;
return;