[PATCH RFC md-6.16 v3 01/19] md/md-bitmap: add {start, end}_discard in bitmap_operations

[Yu Kuai]

From: Yu Kuai <yuku...@huawei.com>

Prepare to support discard in new md bitmap.

Signed-off-by: Yu Kuai <yuku...@huawei.com>
---
 drivers/md/md-bitmap.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/md/md-bitmap.h b/drivers/md/md-bitmap.h
index d3d50629af91..c3fc051c88e9 100644
--- a/drivers/md/md-bitmap.h
+++ b/drivers/md/md-bitmap.h
@@ -94,6 +94,11 @@ struct bitmap_operations {
                          unsigned long sectors);
        void (*endwrite)(struct mddev *mddev, sector_t offset,
                         unsigned long sectors);
+       int (*start_discard)(struct mddev *mddev, sector_t offset,
+                            unsigned long sectors);
+       void (*end_discard)(struct mddev *mddev, sector_t offset,
+                           unsigned long sectors);
+
        bool (*start_sync)(struct mddev *mddev, sector_t offset,
                           sector_t *blocks, bool degraded);
        void (*end_sync)(struct mddev *mddev, sector_t offset, sector_t 
*blocks);
-- 
2.39.2