vfs: default to generic_readlink()
If i_op->readlink is NULL, but i_op->get_link is set then vfs_readlink()
defaults to calling generic_readlink().
The IOP_DEFAULT_READLINK flag indicates that the above conditions are met
and the default action can be taken.
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
diff --git a/include/linux/fs.h b/include/linux/fs.h
index eba20d1..f6c206e 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -595,6 +595,7 @@ is_uncached_acl(struct posix_acl *acl)
#define IOP_LOOKUP 0x0002
#define IOP_NOFOLLOW 0x0004
#define IOP_XATTR 0x0008
+#define IOP_DEFAULT_READLINK 0x0010
/*
* Keep mostly read-only and often accessed (especially for