block: have drivers use blk_queue_max_discard_sectors()
Some drivers use it now, others just set the limits field manually.
But in preparation for splitting this into a hard and soft limit,
ensure that they all call the proper function for setting the hw
limit for discards.
Reviewed-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index d94529d..dcc86937 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -3803,7 +3803,7 @@
queue_flag_set_unlocked(QUEUE_FLAG_DISCARD, q);
q->limits.discard_granularity = segment_size;
q->limits.discard_alignment = segment_size;
- q->limits.max_discard_sectors = segment_size / SECTOR_SIZE;
+ blk_queue_max_discard_sectors(q, segment_size / SECTOR_SIZE);
q->limits.discard_zeroes_data = 1;
blk_queue_merge_bvec(q, rbd_merge_bvec);