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+What: /sys/fs/f2fs/<disk>/gc_max_sleep_time
+Date: July 2013
+Contact: "Namjae Jeon" <namjae.jeon@samsung.com>
+Description:
+ Controls the maximun sleep time for gc_thread. Time
+ is in milliseconds.
+
+What: /sys/fs/f2fs/<disk>/gc_min_sleep_time
+Date: July 2013
+Contact: "Namjae Jeon" <namjae.jeon@samsung.com>
+Description:
+ Controls the minimum sleep time for gc_thread. Time
+ is in milliseconds.
+
+What: /sys/fs/f2fs/<disk>/gc_no_gc_sleep_time
+Date: July 2013
+Contact: "Namjae Jeon" <namjae.jeon@samsung.com>
+Description:
+ Controls the default sleep time for gc_thread. Time
+ is in milliseconds.
+
+What: /sys/fs/f2fs/<disk>/gc_idle
+Date: July 2013
+Contact: "Namjae Jeon" <namjae.jeon@samsung.com>
+Description:
+ Controls the victim selection policy for garbage collection.