On 22.09.2013 01:01:31, Samuel Thibault wrote: > You have missed an important thing here: it's userland which provides > the value we are supposed to check for. The idea is that there is a > window between when userland sees the futex as seeming locked, and > here. In the meanwhile some other thread might have unlocked the > futex. And we don't want to hardcode in the kernel what a "locked > futex" means. That's why it's userland which provides the value the > kernel should check for. > > You can read "futexes are tricky" from Ulrich Drepper, for more > details. > > > +/* Check if there is an existing futex at the address given. */ > > Better use a hash table :) > > Samuel
Samuel, thank you for the comments. I will continue the work in that direction.
