@@ -1570,7 +1570,8 @@ static void update_ovl_inode_times(struct dentry *dentry, struct inode *inode,
bool rcu)
{
if (!rcu) {
- struct inode *realinode = d_real_inode(dentry);
+ struct inode *realinode =
+ d_inode(d_real(dentry, NULL, 0, D_REAL_ALL));
if (unlikely(inode != realinode) &&
(!timespec_equal(&inode->i_mtime, &realinode->i_mtime) ||
@@ -75,6 +75,9 @@ static struct dentry *ovl_d_real(struct dentry *dentry,
struct dentry *real;
int err;
+ if (flags & D_REAL_ALL)
+ return ovl_dentry_real(dentry);
+
if (!d_is_reg(dentry)) {
if (!inode || inode == d_inode(dentry))
return dentry;
@@ -562,6 +562,9 @@ static inline struct dentry *d_backing_dentry(struct dentry *upper)
return upper;
}
+/* d_real() flags */
+#define D_REAL_ALL 0x1 /* return real dentry for all file types */
+
/**
* d_real - Return the real dentry
* @dentry: the dentry to query
Need to treat non-regular overlayfs files the same as regular files when checking for an atime update. Add a d_real() flag to make it return the real dentry for all file types. Reported-by: "zhangyi (F)" <yi.zhang@huawei.com> Signed-off-by: Miklos Szeredi <mszeredi@redhat.com> --- fs/inode.c | 3 ++- fs/overlayfs/super.c | 3 +++ include/linux/dcache.h | 3 +++ 3 files changed, 8 insertions(+), 1 deletion(-)