From mboxrd@z Thu Jan 1 00:00:00 1970 From: heinzm@redhat.com Subject: [PATCH] md: raid5: add prerequisite to run underneath dm-raid Date: Mon, 9 May 2016 17:50:09 +0200 Message-ID: <1462809009-2809-1-git-send-email-heinzm@redhat.com> Return-path: Sender: linux-raid-owner@vger.kernel.org To: linux-raid@vger.kernel.org Cc: Heinz Mauelshagen List-Id: linux-raid.ids From: Heinz Mauelshagen In case md runs underneath the dm-raid target, the mddev does not have a request queue or gendisk, thus avoid accesses. This patch adds a missing conditional to the raid5 personality. Signed-of-by: Heinz Mauelshagen --- drivers/md/raid5.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index 8ab8b65..ce79ce6 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -7574,8 +7574,10 @@ static void raid5_finish_reshape(struct mddev *mddev) if (mddev->delta_disks > 0) { md_set_array_sectors(mddev, raid5_size(mddev, 0, 0)); - 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; spin_lock_irq(&conf->device_lock); -- 2.5.5