md: Use new topology calls to indicate alignment and I/O sizes

[linux-2.6-block.git] / drivers / md / raid5.c

diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index f9f991e6e1389ffc90860571edf701ca13a6f292..92ef9b6abfc7a7bb327d959d3e00964694c1d706 100644 (file)
--- 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: