Patch "md: add a new helper reshape_interrupted()" has been added to the 6.7-stable tree

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This is a note to let you know that I've just added the patch titled

    md: add a new helper reshape_interrupted()

to the 6.7-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     md-add-a-new-helper-reshape_interrupted.patch
and it can be found in the queue-6.7 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 93eea3476818fa2330767ddb72ecef859681c747
Author: Yu Kuai <yukuai3@xxxxxxxxxx>
Date:   Tue Mar 5 15:23:01 2024 +0800

    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@xxxxxxxxxxxxxxx # v6.7+
    Signed-off-by: Yu Kuai <yukuai3@xxxxxxxxxx>
    Signed-off-by: Xiao Ni <xni@xxxxxxxxxx>
    Acked-by: Mike Snitzer <snitzer@xxxxxxxxxx>
    Signed-off-by: Song Liu <song@xxxxxxxxxx>
    Link: https://lore.kernel.org/r/20240305072306.2562024-5-yukuai1@xxxxxxxxxxxxxxx
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/md/md.h b/drivers/md/md.h
index db0cb00e4c9ac..ea0fd76c17e75 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);




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