Patch "md/raid10: skip spare disk as 'first' disk" has been added to the 4.4-stable tree

Patch "md/raid10: skip spare disk as 'first' disk" 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: skip spare disk as 'first' disk

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-skip-spare-disk-as-first-disk.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 foo@baz Thu Mar 22 14:57:32 CET 2018
From: Shaohua Li <shli@fb.com>
Date: Mon, 1 May 2017 12:15:07 -0700
Subject: md/raid10: skip spare disk as 'first' disk

From: Shaohua Li <shli@fb.com>


[ Upstream commit b506335e5d2b4ec687dde392a3bdbf7601778f1d ]

Commit 6f287ca(md/raid10: reset the 'first' at the end of loop) ignores
a case in reshape, the first rdev could be a spare disk, which shouldn't
be accounted as the first disk since it doesn't include the offset info.

Fix: 6f287ca(md/raid10: reset the 'first' at the end of loop)
Cc: Guoqing Jiang <gqjiang@suse.com>
Cc: NeilBrown <neilb@suse.com>
Signed-off-by: Shaohua Li <shli@fb.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
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
@@ -4044,6 +4044,7 @@ static int raid10_start_reshape(struct m
 				diff = 0;
 			if (first || diff < min_offset_diff)
 				min_offset_diff = diff;
+			first = 0;
 		}
 	}
 


Patches currently in stable-queue which might be from shli@fb.com are

queue-4.4/md-raid10-wait-up-frozen-array-in-handle_write_completed.patch
queue-4.4/md-raid10-skip-spare-disk-as-first-disk.patch