md: split out md_rdev_init

This functionality will be needed separately in a subsequent patch, so
split it into it's own exported function.

Signed-off-by: NeilBrown <neilb@suse.de>

1 files changed, 19 insertions, 15 deletions

diff --git a/drivers/md/md.c b/drivers/md/md.c
index d636b0a40fac..3de623aceed0 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -2691,6 +2691,24 @@ static struct kobj_type rdev_ktype = {
         .default_attrs  = rdev_default_attrs,
 };
 
+void md_rdev_init(mdk_rdev_t *rdev)
+{
+        rdev->desc_nr = -1;
+        rdev->saved_raid_disk = -1;
+        rdev->raid_disk = -1;
+        rdev->flags = 0;
+        rdev->data_offset = 0;
+        rdev->sb_events = 0;
+        rdev->last_read_error.tv_sec  = 0;
+        rdev->last_read_error.tv_nsec = 0;
+        atomic_set(&rdev->nr_pending, 0);
+        atomic_set(&rdev->read_errors, 0);
+        atomic_set(&rdev->corrected_errors, 0);
+
+        INIT_LIST_HEAD(&rdev->same_set);
+        init_waitqueue_head(&rdev->blocked_wait);
+}
+EXPORT_SYMBOL_GPL(md_rdev_init);
 /*
  * Import a device. If 'super_format' >= 0, then sanity check the superblock
  *
@@ -2714,6 +2732,7 @@ static mdk_rdev_t *md_import_device(dev_t newdev, int super_format, int super_mi
                 return ERR_PTR(-ENOMEM);
         }
 
+        md_rdev_init(rdev);
         if ((err = alloc_disk_sb(rdev)))
                 goto abort_free;
 
@@ -2723,18 +2742,6 @@ static mdk_rdev_t *md_import_device(dev_t newdev, int super_format, int super_mi
 
         kobject_init(&rdev->kobj, &rdev_ktype);
 
-        rdev->desc_nr = -1;
-        rdev->saved_raid_disk = -1;
-        rdev->raid_disk = -1;
-        rdev->flags = 0;
-        rdev->data_offset = 0;
-        rdev->sb_events = 0;
-        rdev->last_read_error.tv_sec  = 0;
-        rdev->last_read_error.tv_nsec = 0;
-        atomic_set(&rdev->nr_pending, 0);
-        atomic_set(&rdev->read_errors, 0);
-        atomic_set(&rdev->corrected_errors, 0);
-
         size = rdev->bdev->bd_inode->i_size >> BLOCK_SIZE_BITS;
         if (!size) {
                 printk(KERN_WARNING 
@@ -2763,9 +2770,6 @@ static mdk_rdev_t *md_import_device(dev_t newdev, int super_format, int super_mi
                 }
         }
 
-        INIT_LIST_HEAD(&rdev->same_set);
-        init_waitqueue_head(&rdev->blocked_wait);
-
         return rdev;
 
 abort_free: