btrfs: use common variable for fs_devices in btrfs_destroy_dev_replace_tgtdev

Use a local btrfs_fs_devices variable to access the structure.

Signed-off-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 28715e4..8ed9010 100644 (file)
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -2152,21 +2152,23 @@ void btrfs_rm_dev_replace_free_srcdev(struct btrfs_fs_info *fs_info,
 void btrfs_destroy_dev_replace_tgtdev(struct btrfs_fs_info *fs_info,
                                      struct btrfs_device *tgtdev)
 {
+       struct btrfs_fs_devices *fs_devices = fs_info->fs_devices;
+
        WARN_ON(!tgtdev);
-       mutex_lock(&fs_info->fs_devices->device_list_mutex);
+       mutex_lock(&fs_devices->device_list_mutex);
 
-       btrfs_sysfs_rm_device_link(fs_info->fs_devices, tgtdev);
+       btrfs_sysfs_rm_device_link(fs_devices, tgtdev);
 
        if (tgtdev->bdev)
-               fs_info->fs_devices->open_devices--;
+               fs_devices->open_devices--;
 
-       fs_info->fs_devices->num_devices--;
+       fs_devices->num_devices--;
 
        btrfs_assign_next_active_device(fs_info, tgtdev, NULL);
 
        list_del_rcu(&tgtdev->dev_list);
 
-       mutex_unlock(&fs_info->fs_devices->device_list_mutex);
+       mutex_unlock(&fs_devices->device_list_mutex);
 
        /*
         * The update_dev_time() with in btrfs_scratch_superblocks()