GIT: unionfs2-2.6.27.y: documentation: expand comments to unionfs_lookup_backend

[Erez Zadok]

commit f678c3abc13fedd7c2cf30e3680162ff49a25717
Author: Erez_Zadok <ezk at cs.sunysb.edu>
Date:   Mon May 28 19:36:02 2007 -0400

    documentation: expand comments to unionfs_lookup_backend
    
    Signed-off-by: Erez Zadok <ezk at cs.sunysb.edu>

diff --git a/fs/unionfs/lookup.c b/fs/unionfs/lookup.c
index ffc0044..6409387 100644
--- a/fs/unionfs/lookup.c
+++ b/fs/unionfs/lookup.c
@@ -70,7 +70,12 @@ out:
 	return err;
 }
 
-/* main (and complex) driver function for Unionfs's lookup */
+/*
+ * Main (and complex) driver function for Unionfs's lookup
+ *
+ * Returns: NULL (ok), ERR_PTR if an error occurred, or a non-null non-error
+ * PTR if d_splice returned a different dentry.
+ */
 struct dentry *unionfs_lookup_backend(struct dentry *dentry,
 				      struct nameidata *nd, int lookupmode)
 {