From 3685ad3dfd70b5a4e33e7aff2603f1b125327388 Mon Sep 17 00:00:00 2001 From: Yu Kuai Date: Tue, 5 Mar 2024 15:23:01 +0800 Subject: [PATCH] md: add a new helper reshape_interrupted() [ Upstream commit 503f9d43790fdd0c6e6ae2f4dd3f70b146ac4159 ] 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: Yu Kuai Signed-off-by: Xiao Ni Acked-by: Mike Snitzer Signed-off-by: Song Liu Link: https://lore.kernel.org/r/20240305072306.2562024-5-yukuai1@huaweicloud.com Signed-off-by: Sasha Levin --- drivers/md/md.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/drivers/md/md.h b/drivers/md/md.h index db0cb00e4c9a..ea0fd76c17e7 100644 --- a/drivers/md/md.h +++ b/drivers/md/md.h @@ -571,6 +571,25 @@ 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);