Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx

[~andy/linux] / drivers / md / raid10.c

diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index d56cb2ae515f7bff6a2fa1782f4c9685abe2b5bb..e293d92641acc2b61c5767d3b343702fd65a509b 100644 (file)
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -2023,6 +2023,25 @@ static sector_t sync_request(mddev_t *mddev, sector_t sector_nr, int *skipped, i
        goto skipped;
 }
 
+static sector_t
+raid10_size(mddev_t *mddev, sector_t sectors, int raid_disks)
+{
+       sector_t size;
+       conf_t *conf = mddev_to_conf(mddev);
+
+       if (!raid_disks)
+               raid_disks = mddev->raid_disks;
+       if (!sectors)
+               sectors = mddev->dev_sectors;
+
+       size = sectors >> conf->chunk_shift;
+       sector_div(size, conf->far_copies);
+       size = size * raid_disks;
+       sector_div(size, conf->near_copies);
+
+       return size << conf->chunk_shift;
+}
+
 static int run(mddev_t *mddev)
 {
        conf_t *conf;
@@ -2174,8 +2193,8 @@ static int run(mddev_t *mddev)
        /*
         * Ok, everything is just fine now
         */
-       mddev->array_sectors = size << conf->chunk_shift;
-       mddev->resync_max_sectors = size << conf->chunk_shift;
+       md_set_array_sectors(mddev, raid10_size(mddev, 0, 0));
+       mddev->resync_max_sectors = raid10_size(mddev, 0, 0);
 
        mddev->queue->unplug_fn = raid10_unplug;
        mddev->queue->backing_dev_info.congested_fn = raid10_congested;
@@ -2211,6 +2230,9 @@ static int stop(mddev_t *mddev)
 {
        conf_t *conf = mddev_to_conf(mddev);
 
+       raise_barrier(conf, 0);
+       lower_barrier(conf);
+
        md_unregister_thread(mddev->thread);
        mddev->thread = NULL;
        blk_sync_queue(mddev->queue); /* the unplug fn references 'conf'*/
@@ -2258,6 +2280,7 @@ static struct mdk_personality raid10_personality =
        .spare_active   = raid10_spare_active,
        .sync_request   = sync_request,
        .quiesce        = raid10_quiesce,
+       .size           = raid10_size,
 };
 
 static int __init raid_init(void)