From: Chengguang Xu <cgxu519@mykernel.net>
Date: Wed, 10 Mar 2021 02:09:25 +0000 (+0800)
Subject: ovl: update ctime when changing fileattr
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=d8991e8622e758b718e2e4291d31dd0bea4e14a4;p=linux.git

ovl: update ctime when changing fileattr

Currently we keep size, mode and times of overlay inode
as the same as upper inode, so should update ctime when
changing file attribution as well.

Signed-off-by: Chengguang Xu <cgxu519@mykernel.net>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
---

diff --git a/fs/overlayfs/inode.c b/fs/overlayfs/inode.c
index 8aa370e8143a7..7d52e5ef2ac74 100644
--- a/fs/overlayfs/inode.c
+++ b/fs/overlayfs/inode.c
@@ -573,6 +573,9 @@ int ovl_fileattr_set(struct user_namespace *mnt_userns,
 		BUILD_BUG_ON(OVL_PROT_I_FLAGS_MASK & ~OVL_COPY_I_FLAGS_MASK);
 		flags |= inode->i_flags & OVL_PROT_I_FLAGS_MASK;
 		inode_set_flags(inode, flags, OVL_COPY_I_FLAGS_MASK);
+
+		/* Update ctime */
+		ovl_copyattr(ovl_inode_real(inode), inode);
 	}
 	ovl_drop_write(dentry);
 out: