From 859644f0fa2141b5f7db0e3744999ec3bb5719d3 Mon Sep 17 00:00:00 2001 From: Heinz Mauelshagen Date: Tue, 3 May 2016 19:43:24 +0200 Subject: [PATCH] md: raid10: add prerequisite to run underneath dm-raid In case md runs underneath the dm-raid target, the mddev does not have a request queue or gendisk, thus avoid accesses to it. This patch adds two missing conditionals to the raid10 personality. Signed-of-by: Heinz Mauelshagen Signed-off-by: Shaohua Li --- drivers/md/raid10.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index e3fd725d5c4d..84e24e648165 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -3782,8 +3782,10 @@ static int raid10_resize(struct mddev *mddev, sector_t sectors) return ret; } md_set_array_sectors(mddev, size); - set_capacity(mddev->gendisk, mddev->array_sectors); - revalidate_disk(mddev->gendisk); + if (mddev->queue) { + set_capacity(mddev->gendisk, mddev->array_sectors); + revalidate_disk(mddev->gendisk); + } if (sectors > mddev->dev_sectors && mddev->recovery_cp > oldsize) { mddev->recovery_cp = oldsize; @@ -4593,8 +4595,10 @@ static void raid10_finish_reshape(struct mddev *mddev) set_bit(MD_RECOVERY_NEEDED, &mddev->recovery); } mddev->resync_max_sectors = size; - set_capacity(mddev->gendisk, mddev->array_sectors); - revalidate_disk(mddev->gendisk); + if (mddev->queue) { + set_capacity(mddev->gendisk, mddev->array_sectors); + revalidate_disk(mddev->gendisk); + } } else { int d; for (d = conf->geo.raid_disks ;