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-rw-r--r--Documentation/ABI/testing/sysfs-fs-f2fs6
1 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-fs-f2fs b/Documentation/ABI/testing/sysfs-fs-f2fs
index c8620ea7022a..427f5b45c67f 100644
--- a/Documentation/ABI/testing/sysfs-fs-f2fs
+++ b/Documentation/ABI/testing/sysfs-fs-f2fs
@@ -332,3 +332,9 @@ Description: Give a way to attach REQ_META|FUA to data writes
* REQ_META | REQ_FUA |
* 5 | 4 | 3 | 2 | 1 | 0 |
* Cold | Warm | Hot | Cold | Warm | Hot |
+
+What: /sys/fs/f2fs/<disk>/iostat_period_ms
+Date: April 2020
+Contact: "Daeho Jeong" <daehojeong@google.com>
+Description: Give a way to change iostat_period time. 3secs by default.
+ The new iostat trace gives stats gap given the period.