From: lingfuyi <lingfuyi@kylinos.cn>

fix compile error like this:
fs/afs/dir.c:52:1: error: no return statement in function returning non-void
[-Werror=return-type]
Signed-off-by: lingfuyi <lingfuyi@kylinos.cn>
---
 fs/afs/dir.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/afs/dir.c b/fs/afs/dir.c
index 104df2964225..d4ea307dc312 100644
--- a/fs/afs/dir.c
+++ b/fs/afs/dir.c
@@ -49,6 +49,7 @@ static bool afs_dir_dirty_folio(struct address_space *mapping,
 		struct folio *folio)
 {
 	BUG(); /* This should never happen. */
+	return true;
 }
 
 const struct file_operations afs_dir_file_operations = {
-- 
2.20.1