ChangeLog:

cbc67e01e f2fs/sysfs: Apply RO macro on gc_urgent_sleep_time
f8238ea14 f2fs/sysfs: Introduce a Read-Only attribute macro
9b8d15938 f2fs/gc: Reduce GC thread urgent sleep time to 50ms
9a5b599a4 Merge branch 'linux-4.14.y' of https://github.com/jaegeuk/f2fs-stable into S
5addba95d f2fs: attach inline_data after setting compression
