On Tue, Jan 05, 2021 at 04:50:05PM +0000, Al Viro wrote:
> struct dentry *d_find_alias_rcu(struct inode *inode)
> {
> struct hlist_head *l = &inode->i_dentry;
> struct dentry *de = NULL;
>
> spin_lock(&inode->i_lock);
> // ->i_dentry and ->i_rcu are colocated, but the latter won't be
> // used without having I_FREEING set, which means no aliases left
> if (inode->i_state & I_FREEING) {
> spin_unlock(&inode->i_lock);
> return NULL;
> }
> // we can safely access inode->i_dentry
> if (hlist_empty(p)) {
if (hlist_empty(l)) {
obviously...
