[PATCH 11/11] xen-blkback: use bdev_discard_alignment

Christoph Hellwig
2022-04-18T04:54:23Z

Use bdev_discard_alignment to calculate the correct discard alignment
offset even for partitions instead of just looking at the queue limit.

Also switch to use bdev_discard_granularity to get rid of the last direct
queue reference in xen_blkbk_discard.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
drivers/block/xen-blkback/xenbus.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/block/xen-blkback/xenbus.c b/drivers/block/xen-blkback/xenbus.c
index b21bffc9c50bc..04c90cb8955f6 100644
--- a/drivers/block/xen-blkback/xenbus.c
+++ b/drivers/block/xen-blkback/xenbus.c
@@ -583,14 +583,14 @@ static void xen_blkbk_discard(struct xenbus_transaction xbt, struct backend_info
if (bdev_max_discard_sectors(bdev)) {
err = xenbus_printf(xbt, dev->nodename,
"discard-granularity", "%u",
- q->limits.discard_granularity);
+ bdev_discard_granularity(bdev));
if (err) {
dev_warn(&dev->dev, "writing discard-granularity (%d)", err);
return;
}
err = xenbus_printf(xbt, dev->nodename,
"discard-alignment", "%u",
- q->limits.discard_alignment);
+ bdev_discard_alignment(bdev));
if (err) {
dev_warn(&dev->dev, "writing discard-alignment (%d)", err);
return;
--
2.30.2