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-rw-r--r--drivers/md/raid5.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index f9f991e..92ef9b6 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -4452,7 +4452,7 @@ static raid5_conf_t *setup_conf(mddev_t *mddev)
static int run(mddev_t *mddev)
{
raid5_conf_t *conf;
- int working_disks = 0;
+ int working_disks = 0, chunk_size;
mdk_rdev_t *rdev;
if (mddev->recovery_cp != MaxSector)
@@ -4607,6 +4607,14 @@ static int run(mddev_t *mddev)
md_set_array_sectors(mddev, raid5_size(mddev, 0, 0));
blk_queue_merge_bvec(mddev->queue, raid5_mergeable_bvec);
+ chunk_size = mddev->chunk_sectors << 9;
+ blk_queue_io_min(mddev->queue, chunk_size);
+ blk_queue_io_opt(mddev->queue, chunk_size *
+ (conf->raid_disks - conf->max_degraded));
+
+ list_for_each_entry(rdev, &mddev->disks, same_set)
+ disk_stack_limits(mddev->gendisk, rdev->bdev,
+ rdev->data_offset << 9);
return 0;
abort:
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