On Sat, Jul 27, 2019 at 05:49:32PM +0100, Al Viro wrote: > On Sat, Jul 27, 2019 at 09:28:40AM -0700, Linus Torvalds wrote: > > > is the stupid and straightforward thing, but if you want to be > > *clever* you can actually avoid getting a reference to the 'struct > > file *" entirely, and do the fd->pid lookup under rcu_read_lock() > > instead. It's slightly more complex, but it avoids the fdget/fdput > > reference count games entirely. > > Yecchhh... Please, don't do the last part - at least not unless > we really see that in profiles.
Yeah, I will leave this out for now. Christian
