Patch "md/raid10: reset the 'first' at the end of loop" has been added to the 4.4-stable tree

Patch "md/raid10: reset the 'first' at the end of loop" has been added to the 4.4-stable tree

[gregkh]

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

    md/raid10: reset the 'first' at the end of loop

to the 4.4-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-raid10-reset-the-first-at-the-end-of-loop.patch
and it can be found in the queue-4.4 subdirectory.

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


>From 6f287ca6046edd34ed83aafb7f9033c9c2e809e2 Mon Sep 17 00:00:00 2001
From: Guoqing Jiang <gqjiang@suse.com>
Date: Thu, 6 Apr 2017 09:12:18 +0800
Subject: md/raid10: reset the 'first' at the end of loop

From: Guoqing Jiang <gqjiang@suse.com>

commit 6f287ca6046edd34ed83aafb7f9033c9c2e809e2 upstream.

We need to set "first = 0' at the end of rdev_for_each
loop, so we can get the array's min_offset_diff correctly
otherwise min_offset_diff just means the last rdev's
offset diff.

[only the first chunk, due to b506335e5d2b ("md/raid10: skip spare disk as
'first' disk") being already applied - gregkh]

Suggested-by: NeilBrown <neilb@suse.com>
Signed-off-by: Guoqing Jiang <gqjiang@suse.com>
Reviewed-by: NeilBrown <neilb@suse.com>
Signed-off-by: Shaohua Li <shli@fb.com>
Cc: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/md/raid10.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -3638,6 +3638,7 @@ static int run(struct mddev *mddev)
 
 		if (blk_queue_discard(bdev_get_queue(rdev->bdev)))
 			discard_supported = true;
+		first = 0;
 	}
 
 	if (mddev->queue) {


Patches currently in stable-queue which might be from gqjiang@suse.com are

queue-4.4/md-raid10-reset-the-first-at-the-end-of-loop.patch