btrfs: set the total_devices in device_list_add()

There is no other parent for device_list_add() except for
btrfs_scan_one_device(), which would set btrfs_fs_devices::total_devices
if device_list_add is successful and this can be done with in
device_list_add() itself.

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

diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 46228e9..4224a73 100644 (file)
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -841,6 +841,8 @@ static noinline int device_list_add(const char *path,
        if (!fs_devices->opened)
                device->generation = found_transid;
 
+       fs_devices->total_devices = btrfs_super_num_devices(disk_super);
+
        *fs_devices_ret = fs_devices;
 
        return 0;
@@ -1182,7 +1184,6 @@ int btrfs_scan_one_device(const char *path, fmode_t flags, void *holder,
        struct page *page;
        int ret;
        u64 devid;
-       u64 total_devices;
        u64 bytenr;
 
        /*
@@ -1207,11 +1208,8 @@ int btrfs_scan_one_device(const char *path, fmode_t flags, void *holder,
        }
 
        devid = btrfs_stack_device_id(&disk_super->dev_item);
-       total_devices = btrfs_super_num_devices(disk_super);
 
        ret = device_list_add(path, disk_super, devid, fs_devices_ret);
-       if (!ret && fs_devices_ret)
-               (*fs_devices_ret)->total_devices = total_devices;
 
        btrfs_release_disk_super(page);