autofs: add WARN_ON(1) for non dir/link inode case

It's invalid if the given mode is neither dir nor link, so warn on else
case.

Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Tomohiro Kusumi <[email protected]>
Signed-off-by: Ian Kent <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

diff --git a/fs/autofs4/inode.c b/fs/autofs4/inode.c
index 3f486c1f5f43a1c6e600fa5a84cf837f50823a41..a61521eaf11396c1a6500ed5e11b0a12517823ef 100644 (file)
--- a/fs/autofs4/inode.c
+++ b/fs/autofs4/inode.c
@@ -368,7 +368,8 @@ struct inode *autofs4_get_inode(struct super_block *sb, umode_t mode)
                inode->i_fop = &autofs4_dir_operations;
        } else if (S_ISLNK(mode)) {
                inode->i_op = &autofs4_symlink_inode_operations;
-       }
+       } else
+               WARN_ON(1);
 
        return inode;
 }