From caf16f9b4aa66e5092f95e98cda54f2bb7482ed2 Mon Sep 17 00:00:00 2001 From: Christian Brauner Date: Fri, 2 Oct 2026 15:52:38 +0200 Subject: [PATCH] nullfs: don't update the access time There's no point in updating access times of the nullfs instance. Raise S_IMMUTABLE. Fixes: 9d4e752a24f7 ("namespace: allow creating empty mount namespaces") Cc: stable@vger.kernel.org # v7.1+ Link: https://patch.msgid.link/20261002-work-mount-fixes-4-v1-7-dd44b89d44ce@kernel.org Signed-off-by: Christian Brauner (Amutable) --- fs/nullfs.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/nullfs.c b/fs/nullfs.c index e06352c7b2cc..40aa228bd81a 100644 --- a/fs/nullfs.c +++ b/fs/nullfs.c @@ -32,8 +32,8 @@ static int nullfs_fs_fill_super(struct super_block *s, struct fs_context *fc) make_empty_dir_inode(inode); simple_inode_init_ts(inode); inode->i_ino = 1; - /* ... and immutable. */ - inode->i_flags |= S_IMMUTABLE; + /* ... and immutable, reading it leaves no trace either. */ + inode->i_flags |= S_IMMUTABLE | S_NOATIME; s->s_root = d_make_root(inode); if (!s->s_root)