Commit 503f9d43 authored by Yu Kuai's avatar Yu Kuai Committed by Song Liu
Browse files

md: add a new helper reshape_interrupted() 



The helper will be used for dm-raid456 later to detect the case that
reshape can't make progress.

Cc: stable@vger.kernel.org # v6.7+
Signed-off-by: default avatarYu Kuai <yukuai3@huawei.com>
Signed-off-by: default avatarXiao Ni <xni@redhat.com>
Acked-by: default avatarMike Snitzer <snitzer@kernel.org>
Signed-off-by: default avatarSong Liu <song@kernel.org>
Link: https://lore.kernel.org/r/20240305072306.2562024-5-yukuai1@huaweicloud.com
parent 314e9af0

drivers/md/md.h

+19 −0
Original line number Diff line number Diff line
@@ -581,6 +581,25 @@ 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);