diff options
| -rw-r--r-- | drivers/md/dm-raid.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/md/dm-raid.c b/drivers/md/dm-raid.c index 9c1f7c4de65b..dc8568ab96f2 100644 --- a/drivers/md/dm-raid.c +++ b/drivers/md/dm-raid.c @@ -3728,6 +3728,17 @@ static void raid_io_hints(struct dm_target *ti, struct queue_limits *limits) blk_limits_io_min(limits, chunk_size_bytes); blk_limits_io_opt(limits, chunk_size_bytes * mddev_data_stripes(rs)); + + /* + * RAID10 personality requires bio splitting, + * RAID0/1/4/5/6 don't and process large discard bios properly. + */ + if (rs_is_raid10(rs)) { + limits->discard_granularity = max(chunk_size_bytes, + limits->discard_granularity); + limits->max_discard_sectors = min_not_zero(rs->md.chunk_sectors, + limits->max_discard_sectors); + } } static void raid_postsuspend(struct dm_target *ti) |