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-rw-r--r--drivers/md/md.c5
-rw-r--r--drivers/md/raid5.c3
2 files changed, 8 insertions, 0 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 8d11cd1a0d8b..6eb95451f161 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -4639,6 +4639,11 @@ static int update_size(mddev_t *mddev, sector_t num_sectors)
*/
if (mddev->sync_thread)
return -EBUSY;
+ if (mddev->bitmap)
+ /* Sorry, cannot grow a bitmap yet, just remove it,
+ * grow, and re-add.
+ */
+ return -EBUSY;
rdev_for_each(rdev, tmp, mddev) {
sector_t avail;
avail = rdev->size * 2;
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 40e939675657..17e0953c3c06 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -4446,6 +4446,9 @@ static int raid5_check_reshape(mddev_t *mddev)
return -EINVAL; /* Cannot shrink array or change level yet */
if (mddev->delta_disks == 0)
return 0; /* nothing to do */
+ if (mddev->bitmap)
+ /* Cannot grow a bitmap yet */
+ return -EBUSY;
/* Can only proceed if there are plenty of stripe_heads.
* We need a minimum of one full stripe,, and for sensible progress