From 64202a21a449837aa155764029216d69019cfb15 Mon Sep 17 00:00:00 2001 From: Salvatore Mesoraca Date: Thu, 7 Jun 2018 17:04:55 -0700 Subject: [PATCH] ocfs2: drop a VLA in ocfs2_orphan_del() Avoid a VLA by using a real constant expression instead of a variable. The compiler should be able to optimize the original code and avoid using an actual VLA. Anyway this change is useful because it will avoid a false positive with -Wvla, it might also help the compiler generating better code. Link: http://lkml.kernel.org/r/1520970710-19732-1-git-send-email-s.mesoraca16@gmail.com Signed-off-by: Salvatore Mesoraca Reviewed-by: Kees Cook Reviewed-by: Andrew Morton Cc: Mark Fasheh Cc: Joel Becker Cc: Junxiao Bi Cc: Joseph Qi Cc: Changwei Ge Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/ocfs2/namei.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c index 8dd6f703c819..b7ca84bc3df7 100644 --- a/fs/ocfs2/namei.c +++ b/fs/ocfs2/namei.c @@ -2332,8 +2332,7 @@ int ocfs2_orphan_del(struct ocfs2_super *osb, struct buffer_head *orphan_dir_bh, bool dio) { - const int namelen = OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN; - char name[namelen + 1]; + char name[OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN + 1]; struct ocfs2_dinode *orphan_fe; int status = 0; struct ocfs2_dir_lookup_result lookup = { NULL, };