Commit e91909aa authored by Christoph Hellwig's avatar Christoph Hellwig Committed by David Sterba
Browse files

btrfs: convert btrfs_get_global_root to use a switch statement 



Use a switch statement instead of an endless chain of if statements
to make the code a little cleaner.

Reviewed-by: default avatarJohannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Reviewed-by: default avatarDavid Sterba <dsterba@suse.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent 85724171

fs/btrfs/disk-io.c

+13 −10
Original line number Diff line number Diff line
@@ -1172,26 +1172,29 @@ static struct btrfs_root *btrfs_get_global_root(struct btrfs_fs_info *fs_info, 
		.offset = 0,

	};



	if (objectid == BTRFS_ROOT_TREE_OBJECTID)

	switch (objectid) {

	case BTRFS_ROOT_TREE_OBJECTID:

		return btrfs_grab_root(fs_info->tree_root);

	if (objectid == BTRFS_EXTENT_TREE_OBJECTID)

	case BTRFS_EXTENT_TREE_OBJECTID:

		return btrfs_grab_root(btrfs_global_root(fs_info, &key));

	if (objectid == BTRFS_CHUNK_TREE_OBJECTID)

	case BTRFS_CHUNK_TREE_OBJECTID:

		return btrfs_grab_root(fs_info->chunk_root);

	if (objectid == BTRFS_DEV_TREE_OBJECTID)

	case BTRFS_DEV_TREE_OBJECTID:

		return btrfs_grab_root(fs_info->dev_root);

	if (objectid == BTRFS_CSUM_TREE_OBJECTID)

	case BTRFS_CSUM_TREE_OBJECTID:

		return btrfs_grab_root(btrfs_global_root(fs_info, &key));

	if (objectid == BTRFS_QUOTA_TREE_OBJECTID)

	case BTRFS_QUOTA_TREE_OBJECTID:

		return btrfs_grab_root(fs_info->quota_root);

	if (objectid == BTRFS_UUID_TREE_OBJECTID)

	case BTRFS_UUID_TREE_OBJECTID:

		return btrfs_grab_root(fs_info->uuid_root);

	if (objectid == BTRFS_BLOCK_GROUP_TREE_OBJECTID)

	case BTRFS_BLOCK_GROUP_TREE_OBJECTID:

		return btrfs_grab_root(fs_info->block_group_root);

	if (objectid == BTRFS_FREE_SPACE_TREE_OBJECTID)

	case BTRFS_FREE_SPACE_TREE_OBJECTID:

		return btrfs_grab_root(btrfs_global_root(fs_info, &key));

	default:

		return NULL;

	}

}



int btrfs_insert_fs_root(struct btrfs_fs_info *fs_info,

			 struct btrfs_root *root)