md: centralize ->array_sectors modifications

Get personalities out of the business of directly modifying
->array_sectors.  Lays groundwork to introduce policy on when
->array_sectors can be modified.

Reviewed-by: Andre Noll <maan@systemlinux.org>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

1 files changed, 5 insertions, 3 deletions

diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 2cd619ff0761..2930fc26a852 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -4474,7 +4474,7 @@ static int run(mddev_t *mddev)
         mddev->queue->backing_dev_info.congested_data = mddev;
         mddev->queue->backing_dev_info.congested_fn = raid5_congested;
 
-        mddev->array_sectors = raid5_size(mddev, 0, 0);
+        md_set_array_sectors(mddev, raid5_size(mddev, 0, 0));
 
         blk_queue_merge_bvec(mddev->queue, raid5_mergeable_bvec);
 
@@ -4698,7 +4698,8 @@ static int raid5_resize(mddev_t *mddev, sector_t sectors)
          * worth it.
          */
         sectors &= ~((sector_t)mddev->chunk_size/512 - 1);
-        mddev->array_sectors = raid5_size(mddev, sectors, mddev->raid_disks);
+        md_set_array_sectors(mddev, raid5_size(mddev, sectors,
+                                               mddev->raid_disks));
         set_capacity(mddev->gendisk, mddev->array_sectors);
         mddev->changed = 1;
         if (sectors > mddev->dev_sectors && mddev->recovery_cp == MaxSector) {
@@ -4836,7 +4837,8 @@ static void end_reshape(raid5_conf_t *conf)
         if (!test_bit(MD_RECOVERY_INTR, &conf->mddev->recovery)) {
                 mddev_t *mddev = conf->mddev;
 
-                mddev->array_sectors = raid5_size(mddev, 0, conf->raid_disks);
+                md_set_array_sectors(mddev, raid5_size(mddev, 0,
+                                                       conf->raid_disks));
                 set_capacity(mddev->gendisk, mddev->array_sectors);
                 mddev->changed = 1;
                 conf->previous_raid_disks = conf->raid_disks;