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md: add a new helper reshape_interrupted()

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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
This commit is contained in:
Yu Kuai
2024-03-05 15:23:01 +08:00
committed by Song Liu
parent 314e9af065
commit 503f9d4379
1 changed files with 19 additions and 0 deletions
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drivers/md/md.h
+19
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@@ -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);