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authorShaohua Li <shli@fb.com>2018-10-14 17:05:07 -0700
committerShaohua Li <shli@fb.com>2018-10-14 17:05:07 -0700
commit9e753ba9b9b405e3902d9f08aec5f2ea58a0c317 (patch)
treee13775c41d767d74ea43520db9d064829f7a133b /drivers/md/raid10.c
parentf8f83d8ffeb47041ff0937ecac6d10bcb388cd9f (diff)
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MD: fix invalid stored role for a disk - try2
Commit d595567dc4f0 (MD: fix invalid stored role for a disk) broke linear hotadd. Let's only fix the role for disks in raid1/10. Based on Guoqing's original patch. Reported-by: kernel test robot <rong.a.chen@intel.com> Cc: Gioh Kim <gi-oh.kim@profitbricks.com> Cc: Guoqing Jiang <gqjiang@suse.com> Signed-off-by: Shaohua Li <shli@fb.com>
Diffstat (limited to 'drivers/md/raid10.c')
-rw-r--r--drivers/md/raid10.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index 749848b2c477..a52f43b151b5 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -1808,6 +1808,7 @@ static int raid10_add_disk(struct mddev *mddev, struct md_rdev *rdev)
first = last = rdev->raid_disk;
if (rdev->saved_raid_disk >= first &&
+ rdev->saved_raid_disk < conf->geo.raid_disks &&
conf->mirrors[rdev->saved_raid_disk].rdev == NULL)
mirror = rdev->saved_raid_disk;
else