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-rw-r--r--Documentation/ABI/testing/sysfs-fs-f2fs8
1 files changed, 8 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-fs-f2fs b/Documentation/ABI/testing/sysfs-fs-f2fs
index 91822ce25831..dca326e0ee3e 100644
--- a/Documentation/ABI/testing/sysfs-fs-f2fs
+++ b/Documentation/ABI/testing/sysfs-fs-f2fs
@@ -243,3 +243,11 @@ Description:
- Del: echo '[h/c]!extension' > /sys/fs/f2fs/<disk>/extension_list
- [h] means add/del hot file extension
- [c] means add/del cold file extension
+
+What: /sys/fs/f2fs/<disk>/unusable
+Date April 2019
+Contact: "Daniel Rosenberg" <drosen@google.com>
+Description:
+ If checkpoint=disable, it displays the number of blocks that are unusable.
+ If checkpoint=enable it displays the enumber of blocks that would be unusable
+ if checkpoint=disable were to be set.