On Thu, 14 Apr 2022 09:38:14 +0200 Vlastimil Babka <vbabka@xxxxxxx> wrote: > > Returning ESRCH is better so that programs don't waste time reading and > > closing empty files and instantiating useless inodes. > > Hm, unfortunately I don't remember why I put return -ESRCH for this case in > addition to get_proc_task() failing. I doubt it was a conscious decision to > treat kthreads differently - I think I would have preferred consistency with > maps/smaps. > > Can the awk use case be fixed with some flag to make it ignore the errors? This is all too hard. I think I'll drop the patch for now.