Documentation/ABI/testing/sysfs-fs-f2fs

   1 What:           /sys/fs/f2fs/<disk>/gc_max_sleep_time
   2 Date:           July 2013
   3 Contact:        "Namjae Jeon" <namjae.jeon@samsung.com>
   4 Description:
   5                  Controls the maximun sleep time for gc_thread. Time
   6                  is in milliseconds.
   7
   8 What:           /sys/fs/f2fs/<disk>/gc_min_sleep_time
   9 Date:           July 2013
  10 Contact:        "Namjae Jeon" <namjae.jeon@samsung.com>
  11 Description:
  12                  Controls the minimum sleep time for gc_thread. Time
  13                  is in milliseconds.
  14
  15 What:           /sys/fs/f2fs/<disk>/gc_no_gc_sleep_time
  16 Date:           July 2013
  17 Contact:        "Namjae Jeon" <namjae.jeon@samsung.com>
  18 Description:
  19                  Controls the default sleep time for gc_thread. Time
  20                  is in milliseconds.
  21
  22 What:           /sys/fs/f2fs/<disk>/gc_idle
  23 Date:           July 2013
  24 Contact:        "Namjae Jeon" <namjae.jeon@samsung.com>
  25 Description:
  26                  Controls the victim selection policy for garbage collection.
  27
  28 What:           /sys/fs/f2fs/<disk>/reclaim_segments
  29 Date:           October 2013
  30 Contact:        "Jaegeuk Kim" <jaegeuk.kim@samsung.com>
  31 Description:
  32                  Controls the issue rate of segment discard commands.
  33
  34 What:           /sys/fs/f2fs/<disk>/ipu_policy
  35 Date:           November 2013
  36 Contact:        "Jaegeuk Kim" <jaegeuk.kim@samsung.com>
  37 Description:
  38                  Controls the in-place-update policy.
  39
  40 What:           /sys/fs/f2fs/<disk>/min_ipu_util
  41 Date:           November 2013
  42 Contact:        "Jaegeuk Kim" <jaegeuk.kim@samsung.com>
  43 Description:
  44                  Controls the FS utilization condition for the in-place-update
  45                  policies.
  46
  47 What:           /sys/fs/f2fs/<disk>/max_small_discards
  48 Date:           November 2013
  49 Contact:        "Jaegeuk Kim" <jaegeuk.kim@samsung.com>
  50 Description:
  51                  Controls the issue rate of small discard commands.
  52
  53 What:           /sys/fs/f2fs/<disk>/max_victim_search
  54 Date:           January 2014
  55 Contact:        "Jaegeuk Kim" <jaegeuk.kim@samsung.com>
  56 Description:
  57                  Controls the number of trials to find a victim segment.
  58
  59 What:           /sys/fs/f2fs/<disk>/dir_level
  60 Date:           March 2014
  61 Contact:        "Jaegeuk Kim" <jaegeuk.kim@samsung.com>
  62 Description:
  63                  Controls the directory level for large directory.
  64
  65 What:           /sys/fs/f2fs/<disk>/ram_thresh
  66 Date:           March 2014
  67 Contact:        "Jaegeuk Kim" <jaegeuk.kim@samsung.com>
  68 Description:
  69                  Controls the memory footprint used by f2fs.