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-rw-r--r--Documentation/filesystems/porting4
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/filesystems/porting b/Documentation/filesystems/porting
index bdd025ceb763..95280079c0b3 100644
--- a/Documentation/filesystems/porting
+++ b/Documentation/filesystems/porting
@@ -596,3 +596,7 @@ in your dentry operations instead.
[mandatory]
->rename() has an added flags argument. Any flags not handled by the
filesystem should result in EINVAL being returned.
+--
+[recommended]
+ ->readlink is optional for symlinks. Don't set, unless filesystem needs
+ to fake something for readlink(2).