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-rw-r--r--Documentation/ABI/testing/sysfs-fs-f2fs6
1 files changed, 4 insertions, 2 deletions
diff --git a/Documentation/ABI/testing/sysfs-fs-f2fs b/Documentation/ABI/testing/sysfs-fs-f2fs
index 7fa84e349ad9..540553c933b6 100644
--- a/Documentation/ABI/testing/sysfs-fs-f2fs
+++ b/Documentation/ABI/testing/sysfs-fs-f2fs
@@ -199,5 +199,7 @@ Contact: "Chao Yu" <yuchao0@huawei.com>
Description:
Used to control configure extension list:
- Query: cat /sys/fs/f2fs/<disk>/extension_list
- - Add: echo 'extension' > /sys/fs/f2fs/<disk>/extension_list
- - Del: echo '!extension' > /sys/fs/f2fs/<disk>/extension_list
+ - Add: echo '[h/c]extension' > /sys/fs/f2fs/<disk>/extension_list
+ - 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