58     fn write_disksize(contents: &str) -> io::Result<()>;  in write_disksize()
63     fn write_comp_algorithm(contents: &str) -> io::Result<()>;  in write_comp_algorithm()
66     fn set_idle(contents: &str) -> io::Result<()>;  in set_idle()
71     fn write_backing_dev(contents: &str) -> io::Result<()>;  in write_backing_dev()
73     fn writeback(contents: &str) -> io::Result<()>;  in writeback()
75     fn write_writeback_limit_enable(contents: &str) -> io::Result<()>;  in write_writeback_limit_enable()
77     fn write_writeback_limit(contents: &str) -> io::Result<()>;  in write_writeback_limit()
86     fn write_recomp_algorithm(contents: &str) -> io::Result<()>;  in write_recomp_algorithm()
88     fn recompress(contents: &str) -> io::Result<()>;  in recompress()
99     fn write_disksize(contents: &str) -> io::Result<()> {  in write_disksize()
107     fn set_idle(contents: &str) -> io::Result<()> {  in set_idle()
115     fn write_backing_dev(contents: &str) -> io::Result<()> {  in write_backing_dev()
119     fn writeback(contents: &str) -> io::Result<()> {  in writeback()
123     fn write_writeback_limit(contents: &str) -> io::Result<()> {  in write_writeback_limit()
127     fn write_writeback_limit_enable(contents: &str) -> io::Result<()> {  in write_writeback_limit_enable()
143     fn write_recomp_algorithm(contents: &str) -> io::Result<()> {  in write_recomp_algorithm()
147     fn recompress(contents: &str) -> io::Result<()> {  in recompress()
151     fn write_comp_algorithm(contents: &str) -> io::Result<()> {  in write_comp_algorithm()