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authorYu Kuai <yukuai3@huawei.com>2024-03-05 10:23:01 +0300
committerSong Liu <song@kernel.org>2024-03-05 23:53:32 +0300
commit503f9d43790fdd0c6e6ae2f4dd3f70b146ac4159 (patch)
treeeda82a1919b4218def8f042b6b2ec2463ecc503b
parent314e9af065513ff86ec9e32eaa96b9bd275cf51d (diff)
downloadlinux-503f9d43790fdd0c6e6ae2f4dd3f70b146ac4159.tar.xz
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: Yu Kuai <yukuai3@huawei.com> Signed-off-by: Xiao Ni <xni@redhat.com> Acked-by: Mike Snitzer <snitzer@kernel.org> Signed-off-by: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20240305072306.2562024-5-yukuai1@huaweicloud.com
-rw-r--r--drivers/md/md.h19
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/md/md.h b/drivers/md/md.h
index a40e898fe57e..d5721bd77f63 100644
--- a/drivers/md/md.h
+++ b/drivers/md/md.h
@@ -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);