diff options
Diffstat (limited to 'drivers/md/raid5.c')
| -rw-r--r-- | drivers/md/raid5.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index c5439dce0295..baea94f0670a 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -5529,6 +5529,10 @@ static int run(struct mddev *mddev) * discard data disk but write parity disk */ stripe = stripe * PAGE_SIZE; + /* Round up to power of 2, as discard handling + * currently assumes that */ + while ((stripe-1) & stripe) + stripe = (stripe | (stripe-1)) + 1; mddev->queue->limits.discard_alignment = stripe; mddev->queue->limits.discard_granularity = stripe; /* |