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-rw-r--r--Documentation/filesystems/porting6
1 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/filesystems/porting b/Documentation/filesystems/porting
index f1b87d8aa2da..57bb3754a027 100644
--- a/Documentation/filesystems/porting
+++ b/Documentation/filesystems/porting
@@ -525,3 +525,9 @@ in your dentry operations instead.
set_delayed_call() where it used to set *cookie.
->put_link() is gone - just give the destructor to set_delayed_call()
in ->get_link().
+--
+[mandatory]
+ ->getxattr() and xattr_handler.get() get dentry and inode passed separately.
+ dentry might be yet to be attached to inode, so do _not_ use its ->d_inode
+ in the instances. Rationale: !@#!@# security_d_instantiate() needs to be
+ called before we attach dentry to inode.