diff options
Diffstat (limited to 'drivers/md/dm-raid.c')
| -rw-r--r-- | drivers/md/dm-raid.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/md/dm-raid.c b/drivers/md/dm-raid.c index 9c1f7c4de65b..56b723d012ac 100644 --- a/drivers/md/dm-raid.c +++ b/drivers/md/dm-raid.c @@ -3728,6 +3728,15 @@ 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)); + + /* + * RAID1 and RAID10 personalities require bio splitting, + * RAID0/4/5/6 don't and process large discard bios properly. + */ + if (rs_is_raid1(rs) || rs_is_raid10(rs)) { + limits->discard_granularity = chunk_size_bytes; + limits->max_discard_sectors = rs->md.chunk_sectors; + } } static void raid_postsuspend(struct dm_target *ti) |