[PATCH v2 2/4] f2fs: fix to document fault injection option and sysfs file

[Chao Yu]

Commit 73faec4d9935 ("f2fs: add mount option to select fault injection
ratio") and Commit 087968974fcd ("f2fs: add fault injection to sysfs")
forget to document mount option and sysfs file.

This patch fixes to document them.

Signed-off-by: Chao Yu <yuchao0@xxxxxxxxxx>
---
v2: fix to correct injection_{rate,type} to inject_{rate,type}.
 Documentation/ABI/testing/sysfs-fs-f2fs | 12 ++++++++++++
 Documentation/filesystems/f2fs.txt      |  2 ++
 2 files changed, 14 insertions(+)

diff --git a/Documentation/ABI/testing/sysfs-fs-f2fs b/Documentation/ABI/testing/sysfs-fs-f2fs
index a809f6005f14..3b7692cf3050 100644
--- a/Documentation/ABI/testing/sysfs-fs-f2fs
+++ b/Documentation/ABI/testing/sysfs-fs-f2fs
@@ -112,3 +112,15 @@ Date:		January 2016
 Contact:	"Shuoran Liu" <liushuoran@xxxxxxxxxx>
 Description:
 		 Shows total written kbytes issued to disk.
+
+What:		/sys/fs/f2fs/<disk>/inject_rate
+Date:		May 2016
+Contact:	"Sheng Yong" <shengyong1@xxxxxxxxxx>
+Description:
+		 Contrils the injection rate.
+
+What:		/sys/fs/f2fs/<disk>/inject_type
+Date:		May 2016
+Contact:	"Sheng Yong" <shengyong1@xxxxxxxxxx>
+Description:
+		 Contrils the injection type.
diff --git a/Documentation/filesystems/f2fs.txt b/Documentation/filesystems/f2fs.txt
index 4f6531a4701b..8b04a6359530 100644
--- a/Documentation/filesystems/f2fs.txt
+++ b/Documentation/filesystems/f2fs.txt
@@ -155,6 +155,8 @@ noinline_data          Disable the inline data feature, inline data feature is
                        enabled by default.
 data_flush             Enable data flushing before checkpoint in order to
                        persist data of regular and symlink.
+fault_injection=%d     Enable fault injection in all supported types with
+                       specified injection rate.
 mode=%s                Control block allocation mode which supports "adaptive"
                        and "lfs". In "lfs" mode, there should be no random
                        writes towards main area.
-- 
2.13.1.388.g69e6b9b4f4a9