On Thu, 27 Jun 2024 at 09:57, Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote: > > .dput.terminate_walk.path_openat.do_filp_open Hmm. This may be due to the benchmark being in /proc/net, and retain_dentry() returning false. Then the fastpath in fast_dput() won't trigger, and we'll always end up doing the dentry lock if we're the last user (which presumably we will be, there's probably not anybody else there?) Linus