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+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.