From: Yu Kuai <yukuai3@xxxxxxxxxx>
The helper will be used for dm-raid456 later to detect the case that
reshape can't make progress.
Signed-off-by: Yu Kuai <yukuai3@xxxxxxxxxx>
---
drivers/md/md.h | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/drivers/md/md.h b/drivers/md/md.h
index 09368517cc6c..b961c1b4ead7 100644
--- a/drivers/md/md.h
+++ b/drivers/md/md.h
@@ -570,6 +570,25 @@ static inline bool md_is_rdwr(struct mddev *mddev)
return (mddev->ro == MD_RDWR);
}
+static inline bool reshape_interrupted(struct mddev *mddev)
+{
+ /* reshape never start */
+ if (mddev->reshape_position == MaxSector)
+ return false;
+
+ /* interrupted */
+ if (!test_bit(MD_RECOVERY_RUNNING, &mddev->recovery))
+ return true;
+
+ /* running reshape will be interrupted soon. */
+ if (test_bit(MD_RECOVERY_WAIT, &mddev->recovery) ||
+ test_bit(MD_RECOVERY_INTR, &mddev->recovery) ||
+ test_bit(MD_RECOVERY_FROZEN, &mddev->recovery))
+ return true;
+
+ return false;
+}
+
static inline int __must_check mddev_lock(struct mddev *mddev)
{
return mutex_lock_interruptible(&mddev->reconfig_mutex);
--
2.39.2
