On Thu, Apr 19, 2018 at 02:41:04PM +0200, Christoph Hellwig wrote: > Variant of proc_create_data that directly take a struct seq_operations > --- a/fs/proc/internal.h > +++ b/fs/proc/internal.h > @@ -45,6 +45,7 @@ struct proc_dir_entry { > const struct inode_operations *proc_iops; > const struct file_operations *proc_fops; > const struct seq_operations *seq_ops; > + size_t state_size; "unsigned int" please. Where have you seen 4GB priv states?