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-rw-r--r--drivers/md/raid5.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index d72be4b89e6..a36a7435edf 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -4007,6 +4007,13 @@ static int run(mddev_t *mddev)
return -EIO;
}
+ if (mddev->chunk_size < PAGE_SIZE) {
+ printk(KERN_ERR "md/raid5: chunk_size must be at least "
+ "PAGE_SIZE but %d < %ld\n",
+ mddev->chunk_size, PAGE_SIZE);
+ return -EINVAL;
+ }
+
if (mddev->reshape_position != MaxSector) {
/* Check that we can continue the reshape.
* Currently only disks can change, it must