What: /sys/fs/f2fs/<disk>/gc_urgent
Date: August 2017
Contact: "Jaegeuk Kim" <jaegeuk@kernel.org>
-Description: Do background GC agressively when set. When gc_urgent = 1,
+Description: Do background GC aggressively when set. When gc_urgent = 1,
background thread starts to do GC by given gc_urgent_sleep_time
interval. When gc_urgent = 2, F2FS will lower the bar of
checking idle in order to process outstanding discard commands