On Mon, 24 Jul 2023 at 09:59, Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote: > > Maybe it doesn't matter. Obviously it can't have contention, and your > patch in that sense is pretty benign. > > But locking is just fundamentally expensive in the first place, and it > annoys me that I never realized that pidfd_getfd() did that thing that > I knew was broken for /proc. I've applied the patch, with a much pruned commit message, and just a link to your original email instead. Linus