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authorHeinz Mauelshagen <heinzm@redhat.com>2016-05-03 22:15:31 +0200
committerShaohua Li <shli@fb.com>2016-05-09 09:24:02 -0700
commitfe67d19a2d7b31f1c29efbe1819c921d4a9bb012 (patch)
treebf491b1752b31fbce3f97fbf172dd600af667947 /drivers/md
parent859644f0fa2141b5f7db0e3744999ec3bb5719d3 (diff)
md: raid5: 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. This patch adds a missing conditional to the raid5 personality. Signed-of-by: Heinz Mauelshagen <heinzm@redhat.com> Signed-off-by: Shaohua Li <shli@fb.com>
Diffstat (limited to 'drivers/md')
-rw-r--r--drivers/md/raid5.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index e48c262ce032..4d31b235a888 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -7572,8 +7572,10 @@ 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);