| What:		/sys/class/zram-control/ | 
 | Date:		August 2015 | 
 | KernelVersion:	4.2 | 
 | Contact:	Sergey Senozhatsky <sergey.senozhatsky@gmail.com> | 
 | Description: | 
 | 		The zram-control/ class sub-directory belongs to zram | 
 | 		device class | 
 |  | 
 | What:		/sys/class/zram-control/hot_add | 
 | Date:		August 2015 | 
 | KernelVersion:	4.2 | 
 | Contact:	Sergey Senozhatsky <sergey.senozhatsky@gmail.com> | 
 | Description: | 
 | 		RO attribute. Read operation will cause zram to add a new | 
 | 		device and return its device id back to user (so one can | 
 | 		use /dev/zram<id>), or error code. | 
 |  | 
 | What:		/sys/class/zram-control/hot_remove | 
 | Date:		August 2015 | 
 | KernelVersion:	4.2 | 
 | Contact:	Sergey Senozhatsky <sergey.senozhatsky@gmail.com> | 
 | Description: | 
 | 		WO attribute. Remove a specific /dev/zramX device, where X | 
 | 		is a device_id provided by user. |