synchronized(gdesc) { gdesc.setFreeBlocksCount( gdesc.getFreeBlocksCount()+diff ); }
gdesc.setFreeBlocksCount( gdesc.getFreeBlocksCount()+diff );
	protected void modifyFreeBlocksCount(int group, int diff) {		GroupDescriptor gdesc = groupDescriptors[group];		synchronized(gdesc) {			gdesc.setFreeBlocksCount( gdesc.getFreeBlocksCount()+diff );		}				synchronized(superblock) {			superblock.setFreeBlocksCount( superblock.getFreeBlocksCount()+diff );		}	}