get_fs_root(current->fs, &nd->root);
}
-static unsigned set_root_rcu(struct nameidata *nd)
+static void set_root_rcu(struct nameidata *nd)
{
struct fs_struct *fs = current->fs;
unsigned seq;
nd->root = fs->root;
nd->root_seq = __read_seqcount_begin(&nd->root.dentry->d_seq);
} while (read_seqcount_retry(&fs->seq, seq));
- return nd->root_seq;
}
static void path_put_conditional(struct path *path, struct nameidata *nd)
continue;
}
}
- if (unlikely(!d_can_lookup(nd->path.dentry)))
+ if (unlikely(!d_can_lookup(nd->path.dentry))) {
+ if (nd->flags & LOOKUP_RCU) {
+ if (unlazy_walk(nd, NULL, 0))
+ return -ECHILD;
+ }
return -ENOTDIR;
+ }
}
}
if (*s == '/') {
if (flags & LOOKUP_RCU) {
rcu_read_lock();
- nd->seq = set_root_rcu(nd);
+ set_root_rcu(nd);
+ nd->seq = nd->root_seq;
} else {
set_root(nd);
path_get(&nd->root);