md: Fix - again - partition detection when array becomes active

[mv-sheeva.git] / drivers / md / md.c

diff --git a/drivers/md/md.c b/drivers/md/md.c
index 330addfe9b77efccd779bd9f0261b1f6897fe389..818313e277e7c663c9273419bd3929890fec4611 100644 (file)
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -4627,6 +4627,7 @@ static int do_md_run(mddev_t *mddev)
        }
        set_capacity(mddev->gendisk, mddev->array_sectors);
        revalidate_disk(mddev->gendisk);
+       mddev->changed = 1;
        kobject_uevent(&disk_to_dev(mddev->gendisk)->kobj, KOBJ_CHANGE);
 out:
        return err;
@@ -4715,6 +4716,7 @@ static void md_clean(mddev_t *mddev)
        mddev->sync_speed_min = mddev->sync_speed_max = 0;
        mddev->recovery = 0;
        mddev->in_sync = 0;
+       mddev->changed = 0;
        mddev->degraded = 0;
        mddev->safemode = 0;
        mddev->bitmap_info.offset = 0;
@@ -4830,6 +4832,7 @@ static int do_md_stop(mddev_t * mddev, int mode, int is_open)
 
                set_capacity(disk, 0);
                mutex_unlock(&mddev->open_mutex);
+               mddev->changed = 1;
                revalidate_disk(disk);
 
                if (mddev->ro)
@@ -6014,7 +6017,7 @@ static int md_open(struct block_device *bdev, fmode_t mode)
        atomic_inc(&mddev->openers);
        mutex_unlock(&mddev->open_mutex);
 
-       check_disk_size_change(mddev->gendisk, bdev);
+       check_disk_change(bdev);
  out:
        return err;
 }
@@ -6029,6 +6032,21 @@ static int md_release(struct gendisk *disk, fmode_t mode)
 
        return 0;
 }
+
+static int md_media_changed(struct gendisk *disk)
+{
+       mddev_t *mddev = disk->private_data;
+
+       return mddev->changed;
+}
+
+static int md_revalidate(struct gendisk *disk)
+{
+       mddev_t *mddev = disk->private_data;
+
+       mddev->changed = 0;
+       return 0;
+}
 static const struct block_device_operations md_fops =
 {
        .owner          = THIS_MODULE,
@@ -6039,6 +6057,8 @@ static const struct block_device_operations md_fops =
        .compat_ioctl   = md_compat_ioctl,
 #endif
        .getgeo         = md_getgeo,
+       .media_changed  = md_media_changed,
+       .revalidate_disk= md_revalidate,
 };
 
 static int md_thread(void * arg)